Commit | Line | Data |
---|---|---|
a3da1d95 GE |
1 | /*************************************************************************** |
2 | ftdi.c - description | |
3 | ------------------- | |
4 | begin : Fri Apr 4 2003 | |
b25d9165 | 5 | copyright : (C) 2003-2013 by Intra2net AG and the libftdi developers |
5fdb1cb1 | 6 | email : opensource@intra2net.com |
a3da1d95 GE |
7 | ***************************************************************************/ |
8 | ||
9 | /*************************************************************************** | |
10 | * * | |
11 | * This program is free software; you can redistribute it and/or modify * | |
12 | * it under the terms of the GNU Lesser General Public License * | |
13 | * version 2.1 as published by the Free Software Foundation; * | |
14 | * * | |
15 | ***************************************************************************/ | |
d9f0cce7 | 16 | |
b5ec1820 TJ |
17 | /** |
18 | \mainpage libftdi API documentation | |
19 | ||
ad397a4b | 20 | Library to talk to FTDI chips. You find the latest versions of libftdi at |
1bfc403c | 21 | http://www.intra2net.com/en/developer/libftdi/ |
b5ec1820 | 22 | |
ad397a4b TJ |
23 | The library is easy to use. Have a look at this short example: |
24 | \include simple.c | |
25 | ||
26 | More examples can be found in the "examples" directory. | |
b5ec1820 TJ |
27 | */ |
28 | /** \addtogroup libftdi */ | |
29 | /* @{ */ | |
30 | ||
579b006f | 31 | #include <libusb.h> |
a8f46ddc | 32 | #include <string.h> |
d2f10023 | 33 | #include <errno.h> |
b56d5a64 | 34 | #include <stdio.h> |
579b006f | 35 | #include <stdlib.h> |
0e302db6 | 36 | |
b790d38e | 37 | #include "ftdi_i.h" |
98452d97 | 38 | #include "ftdi.h" |
0220adfa | 39 | #include "ftdi_version_i.h" |
a3da1d95 | 40 | |
21abaf2e | 41 | #define ftdi_error_return(code, str) do { \ |
b0a50459 PS |
42 | if ( ftdi ) \ |
43 | ftdi->error_str = str; \ | |
44 | else \ | |
45 | fprintf(stderr, str); \ | |
21abaf2e | 46 | return code; \ |
d2f10023 | 47 | } while(0); |
c3d95b87 | 48 | |
99650502 UB |
49 | #define ftdi_error_return_free_device_list(code, str, devs) do { \ |
50 | libusb_free_device_list(devs,1); \ | |
51 | ftdi->error_str = str; \ | |
52 | return code; \ | |
53 | } while(0); | |
54 | ||
418aaa72 | 55 | |
f3f81007 TJ |
56 | /** |
57 | Internal function to close usb device pointer. | |
58 | Sets ftdi->usb_dev to NULL. | |
59 | \internal | |
60 | ||
61 | \param ftdi pointer to ftdi_context | |
62 | ||
579b006f | 63 | \retval none |
f3f81007 | 64 | */ |
579b006f | 65 | static void ftdi_usb_close_internal (struct ftdi_context *ftdi) |
dff4fdb0 | 66 | { |
22a1b5c1 | 67 | if (ftdi && ftdi->usb_dev) |
dff4fdb0 | 68 | { |
56ac0383 TJ |
69 | libusb_close (ftdi->usb_dev); |
70 | ftdi->usb_dev = NULL; | |
44f41f11 UB |
71 | if(ftdi->eeprom) |
72 | ftdi->eeprom->initialized_for_connected_device = 0; | |
dff4fdb0 | 73 | } |
dff4fdb0 | 74 | } |
c3d95b87 | 75 | |
1941414d TJ |
76 | /** |
77 | Initializes a ftdi_context. | |
4837f98a | 78 | |
1941414d | 79 | \param ftdi pointer to ftdi_context |
4837f98a | 80 | |
1941414d TJ |
81 | \retval 0: all fine |
82 | \retval -1: couldn't allocate read buffer | |
a35aa9bd | 83 | \retval -2: couldn't allocate struct buffer |
3a284749 | 84 | \retval -3: libusb_init() failed |
1941414d TJ |
85 | |
86 | \remark This should be called before all functions | |
948f9ada | 87 | */ |
a8f46ddc TJ |
88 | int ftdi_init(struct ftdi_context *ftdi) |
89 | { | |
a35aa9bd | 90 | struct ftdi_eeprom* eeprom = (struct ftdi_eeprom *)malloc(sizeof(struct ftdi_eeprom)); |
02212d8e | 91 | ftdi->usb_ctx = NULL; |
98452d97 | 92 | ftdi->usb_dev = NULL; |
545820ce TJ |
93 | ftdi->usb_read_timeout = 5000; |
94 | ftdi->usb_write_timeout = 5000; | |
a3da1d95 | 95 | |
53ad271d | 96 | ftdi->type = TYPE_BM; /* chip type */ |
a3da1d95 | 97 | ftdi->baudrate = -1; |
418aaa72 | 98 | ftdi->bitbang_enabled = 0; /* 0: normal mode 1: any of the bitbang modes enabled */ |
a3da1d95 | 99 | |
948f9ada TJ |
100 | ftdi->readbuffer = NULL; |
101 | ftdi->readbuffer_offset = 0; | |
102 | ftdi->readbuffer_remaining = 0; | |
103 | ftdi->writebuffer_chunksize = 4096; | |
e2f12a4f | 104 | ftdi->max_packet_size = 0; |
3a284749 TJ |
105 | ftdi->error_str = NULL; |
106 | ftdi->module_detach_mode = AUTO_DETACH_SIO_MODULE; | |
107 | ||
108 | if (libusb_init(&ftdi->usb_ctx) < 0) | |
109 | ftdi_error_return(-3, "libusb_init() failed"); | |
948f9ada | 110 | |
ac0af8ec | 111 | ftdi_set_interface(ftdi, INTERFACE_ANY); |
418aaa72 | 112 | ftdi->bitbang_mode = 1; /* when bitbang is enabled this holds the number of the mode */ |
53ad271d | 113 | |
a35aa9bd UB |
114 | if (eeprom == 0) |
115 | ftdi_error_return(-2, "Can't malloc struct ftdi_eeprom"); | |
b4d19dea | 116 | memset(eeprom, 0, sizeof(struct ftdi_eeprom)); |
a35aa9bd | 117 | ftdi->eeprom = eeprom; |
c201f80f | 118 | |
1c733d33 TJ |
119 | /* All fine. Now allocate the readbuffer */ |
120 | return ftdi_read_data_set_chunksize(ftdi, 4096); | |
948f9ada | 121 | } |
4837f98a | 122 | |
1941414d | 123 | /** |
cef378aa TJ |
124 | Allocate and initialize a new ftdi_context |
125 | ||
126 | \return a pointer to a new ftdi_context, or NULL on failure | |
127 | */ | |
672ac008 | 128 | struct ftdi_context *ftdi_new(void) |
cef378aa TJ |
129 | { |
130 | struct ftdi_context * ftdi = (struct ftdi_context *)malloc(sizeof(struct ftdi_context)); | |
131 | ||
22d12cda TJ |
132 | if (ftdi == NULL) |
133 | { | |
cef378aa TJ |
134 | return NULL; |
135 | } | |
136 | ||
22d12cda TJ |
137 | if (ftdi_init(ftdi) != 0) |
138 | { | |
cef378aa | 139 | free(ftdi); |
cdf448f6 | 140 | return NULL; |
cef378aa TJ |
141 | } |
142 | ||
143 | return ftdi; | |
144 | } | |
145 | ||
146 | /** | |
1941414d TJ |
147 | Open selected channels on a chip, otherwise use first channel. |
148 | ||
149 | \param ftdi pointer to ftdi_context | |
f9d69895 | 150 | \param interface Interface to use for FT2232C/2232H/4232H chips. |
1941414d TJ |
151 | |
152 | \retval 0: all fine | |
153 | \retval -1: unknown interface | |
22a1b5c1 | 154 | \retval -2: USB device unavailable |
1c5fa36b | 155 | \retval -3: Device already open, interface can't be set in that state |
c4446c36 | 156 | */ |
0ce2f5fa | 157 | int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface) |
c4446c36 | 158 | { |
1971c26d | 159 | if (ftdi == NULL) |
22a1b5c1 TJ |
160 | ftdi_error_return(-2, "USB device unavailable"); |
161 | ||
1c5fa36b TJ |
162 | if (ftdi->usb_dev != NULL) |
163 | { | |
164 | int check_interface = interface; | |
165 | if (check_interface == INTERFACE_ANY) | |
166 | check_interface = INTERFACE_A; | |
167 | ||
168 | if (ftdi->index != check_interface) | |
169 | ftdi_error_return(-3, "Interface can not be changed on an already open device"); | |
170 | } | |
171 | ||
22d12cda TJ |
172 | switch (interface) |
173 | { | |
174 | case INTERFACE_ANY: | |
175 | case INTERFACE_A: | |
ac0af8ec VY |
176 | ftdi->interface = 0; |
177 | ftdi->index = INTERFACE_A; | |
178 | ftdi->in_ep = 0x02; | |
179 | ftdi->out_ep = 0x81; | |
22d12cda TJ |
180 | break; |
181 | case INTERFACE_B: | |
182 | ftdi->interface = 1; | |
183 | ftdi->index = INTERFACE_B; | |
184 | ftdi->in_ep = 0x04; | |
185 | ftdi->out_ep = 0x83; | |
186 | break; | |
f9d69895 AH |
187 | case INTERFACE_C: |
188 | ftdi->interface = 2; | |
189 | ftdi->index = INTERFACE_C; | |
190 | ftdi->in_ep = 0x06; | |
191 | ftdi->out_ep = 0x85; | |
192 | break; | |
193 | case INTERFACE_D: | |
194 | ftdi->interface = 3; | |
195 | ftdi->index = INTERFACE_D; | |
196 | ftdi->in_ep = 0x08; | |
197 | ftdi->out_ep = 0x87; | |
198 | break; | |
22d12cda TJ |
199 | default: |
200 | ftdi_error_return(-1, "Unknown interface"); | |
c4446c36 TJ |
201 | } |
202 | return 0; | |
203 | } | |
948f9ada | 204 | |
1941414d TJ |
205 | /** |
206 | Deinitializes a ftdi_context. | |
4837f98a | 207 | |
1941414d | 208 | \param ftdi pointer to ftdi_context |
4837f98a | 209 | */ |
a8f46ddc TJ |
210 | void ftdi_deinit(struct ftdi_context *ftdi) |
211 | { | |
22a1b5c1 TJ |
212 | if (ftdi == NULL) |
213 | return; | |
214 | ||
f3f81007 | 215 | ftdi_usb_close_internal (ftdi); |
dff4fdb0 | 216 | |
22d12cda TJ |
217 | if (ftdi->readbuffer != NULL) |
218 | { | |
d9f0cce7 TJ |
219 | free(ftdi->readbuffer); |
220 | ftdi->readbuffer = NULL; | |
948f9ada | 221 | } |
a35aa9bd UB |
222 | |
223 | if (ftdi->eeprom != NULL) | |
224 | { | |
74e8e79d UB |
225 | if (ftdi->eeprom->manufacturer != 0) |
226 | { | |
227 | free(ftdi->eeprom->manufacturer); | |
228 | ftdi->eeprom->manufacturer = 0; | |
229 | } | |
230 | if (ftdi->eeprom->product != 0) | |
231 | { | |
232 | free(ftdi->eeprom->product); | |
233 | ftdi->eeprom->product = 0; | |
234 | } | |
235 | if (ftdi->eeprom->serial != 0) | |
236 | { | |
237 | free(ftdi->eeprom->serial); | |
238 | ftdi->eeprom->serial = 0; | |
239 | } | |
a35aa9bd UB |
240 | free(ftdi->eeprom); |
241 | ftdi->eeprom = NULL; | |
242 | } | |
3a284749 TJ |
243 | |
244 | if (ftdi->usb_ctx) | |
245 | { | |
246 | libusb_exit(ftdi->usb_ctx); | |
247 | ftdi->usb_ctx = NULL; | |
248 | } | |
a3da1d95 GE |
249 | } |
250 | ||
1941414d | 251 | /** |
cef378aa TJ |
252 | Deinitialize and free an ftdi_context. |
253 | ||
254 | \param ftdi pointer to ftdi_context | |
255 | */ | |
256 | void ftdi_free(struct ftdi_context *ftdi) | |
257 | { | |
258 | ftdi_deinit(ftdi); | |
259 | free(ftdi); | |
260 | } | |
261 | ||
262 | /** | |
1941414d TJ |
263 | Use an already open libusb device. |
264 | ||
265 | \param ftdi pointer to ftdi_context | |
579b006f | 266 | \param usb libusb libusb_device_handle to use |
4837f98a | 267 | */ |
579b006f | 268 | void ftdi_set_usbdev (struct ftdi_context *ftdi, libusb_device_handle *usb) |
a8f46ddc | 269 | { |
22a1b5c1 TJ |
270 | if (ftdi == NULL) |
271 | return; | |
272 | ||
98452d97 TJ |
273 | ftdi->usb_dev = usb; |
274 | } | |
275 | ||
0220adfa TJ |
276 | /** |
277 | * @brief Get libftdi library version | |
278 | * | |
279 | * @return ftdi_version_info Library version information | |
280 | **/ | |
281 | struct ftdi_version_info ftdi_get_library_version() | |
282 | { | |
283 | struct ftdi_version_info ver; | |
284 | ||
285 | ver.major = FTDI_MAJOR_VERSION; | |
286 | ver.minor = FTDI_MINOR_VERSION; | |
287 | ver.micro = FTDI_MICRO_VERSION; | |
288 | ver.version_str = FTDI_VERSION_STRING; | |
289 | ver.snapshot_str = FTDI_SNAPSHOT_VERSION; | |
290 | ||
291 | return ver; | |
292 | } | |
98452d97 | 293 | |
1941414d | 294 | /** |
7879216a UB |
295 | Finds all ftdi devices with given VID:PID on the usb bus. Creates a new |
296 | ftdi_device_list which needs to be deallocated by ftdi_list_free() after | |
297 | use. With VID:PID 0:0, search for the default devices | |
298 | (0x403:0x6001, 0x403:0x6010, 0x403:0x6011, 0x403:0x6014) | |
1941414d TJ |
299 | |
300 | \param ftdi pointer to ftdi_context | |
301 | \param devlist Pointer where to store list of found devices | |
302 | \param vendor Vendor ID to search for | |
303 | \param product Product ID to search for | |
edb82cbf | 304 | |
1941414d | 305 | \retval >0: number of devices found |
1941414d | 306 | \retval -3: out of memory |
579b006f JZ |
307 | \retval -5: libusb_get_device_list() failed |
308 | \retval -6: libusb_get_device_descriptor() failed | |
edb82cbf | 309 | */ |
d2f10023 | 310 | int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist, int vendor, int product) |
edb82cbf TJ |
311 | { |
312 | struct ftdi_device_list **curdev; | |
579b006f JZ |
313 | libusb_device *dev; |
314 | libusb_device **devs; | |
edb82cbf | 315 | int count = 0; |
579b006f JZ |
316 | int i = 0; |
317 | ||
02212d8e | 318 | if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) |
579b006f | 319 | ftdi_error_return(-5, "libusb_get_device_list() failed"); |
edb82cbf TJ |
320 | |
321 | curdev = devlist; | |
6db32169 | 322 | *curdev = NULL; |
579b006f JZ |
323 | |
324 | while ((dev = devs[i++]) != NULL) | |
22d12cda | 325 | { |
579b006f | 326 | struct libusb_device_descriptor desc; |
d2f10023 | 327 | |
579b006f | 328 | if (libusb_get_device_descriptor(dev, &desc) < 0) |
77377af7 | 329 | ftdi_error_return_free_device_list(-6, "libusb_get_device_descriptor() failed", devs); |
edb82cbf | 330 | |
56631bed UB |
331 | if (((vendor != 0 && product != 0) && |
332 | desc.idVendor == vendor && desc.idProduct == product) || | |
333 | ((vendor == 0 && product == 0) && | |
334 | (desc.idVendor == 0x403) && (desc.idProduct == 0x6001 || desc.idProduct == 0x6010 | |
7879216a | 335 | || desc.idProduct == 0x6011 || desc.idProduct == 0x6014))) |
579b006f JZ |
336 | { |
337 | *curdev = (struct ftdi_device_list*)malloc(sizeof(struct ftdi_device_list)); | |
338 | if (!*curdev) | |
77377af7 | 339 | ftdi_error_return_free_device_list(-3, "out of memory", devs); |
56ac0383 | 340 | |
579b006f JZ |
341 | (*curdev)->next = NULL; |
342 | (*curdev)->dev = dev; | |
0c33162c | 343 | libusb_ref_device(dev); |
579b006f JZ |
344 | curdev = &(*curdev)->next; |
345 | count++; | |
edb82cbf TJ |
346 | } |
347 | } | |
77377af7 | 348 | libusb_free_device_list(devs,1); |
edb82cbf TJ |
349 | return count; |
350 | } | |
351 | ||
1941414d TJ |
352 | /** |
353 | Frees a usb device list. | |
edb82cbf | 354 | |
1941414d | 355 | \param devlist USB device list created by ftdi_usb_find_all() |
edb82cbf | 356 | */ |
d2f10023 | 357 | void ftdi_list_free(struct ftdi_device_list **devlist) |
edb82cbf | 358 | { |
6db32169 TJ |
359 | struct ftdi_device_list *curdev, *next; |
360 | ||
22d12cda TJ |
361 | for (curdev = *devlist; curdev != NULL;) |
362 | { | |
6db32169 | 363 | next = curdev->next; |
0c33162c | 364 | libusb_unref_device(curdev->dev); |
6db32169 TJ |
365 | free(curdev); |
366 | curdev = next; | |
edb82cbf TJ |
367 | } |
368 | ||
6db32169 | 369 | *devlist = NULL; |
edb82cbf TJ |
370 | } |
371 | ||
1941414d | 372 | /** |
cef378aa TJ |
373 | Frees a usb device list. |
374 | ||
375 | \param devlist USB device list created by ftdi_usb_find_all() | |
376 | */ | |
377 | void ftdi_list_free2(struct ftdi_device_list *devlist) | |
378 | { | |
379 | ftdi_list_free(&devlist); | |
380 | } | |
381 | ||
382 | /** | |
474786c0 TJ |
383 | Return device ID strings from the usb device. |
384 | ||
385 | The parameters manufacturer, description and serial may be NULL | |
386 | or pointer to buffers to store the fetched strings. | |
387 | ||
898c34dd TJ |
388 | \note Use this function only in combination with ftdi_usb_find_all() |
389 | as it closes the internal "usb_dev" after use. | |
390 | ||
474786c0 TJ |
391 | \param ftdi pointer to ftdi_context |
392 | \param dev libusb usb_dev to use | |
393 | \param manufacturer Store manufacturer string here if not NULL | |
394 | \param mnf_len Buffer size of manufacturer string | |
395 | \param description Store product description string here if not NULL | |
396 | \param desc_len Buffer size of product description string | |
397 | \param serial Store serial string here if not NULL | |
398 | \param serial_len Buffer size of serial string | |
399 | ||
400 | \retval 0: all fine | |
401 | \retval -1: wrong arguments | |
402 | \retval -4: unable to open device | |
403 | \retval -7: get product manufacturer failed | |
404 | \retval -8: get product description failed | |
405 | \retval -9: get serial number failed | |
579b006f | 406 | \retval -11: libusb_get_device_descriptor() failed |
474786c0 | 407 | */ |
579b006f | 408 | int ftdi_usb_get_strings(struct ftdi_context * ftdi, struct libusb_device * dev, |
22d12cda | 409 | char * manufacturer, int mnf_len, char * description, int desc_len, char * serial, int serial_len) |
474786c0 | 410 | { |
579b006f JZ |
411 | struct libusb_device_descriptor desc; |
412 | ||
474786c0 TJ |
413 | if ((ftdi==NULL) || (dev==NULL)) |
414 | return -1; | |
415 | ||
579b006f JZ |
416 | if (libusb_open(dev, &ftdi->usb_dev) < 0) |
417 | ftdi_error_return(-4, "libusb_open() failed"); | |
418 | ||
419 | if (libusb_get_device_descriptor(dev, &desc) < 0) | |
420 | ftdi_error_return(-11, "libusb_get_device_descriptor() failed"); | |
474786c0 | 421 | |
22d12cda TJ |
422 | if (manufacturer != NULL) |
423 | { | |
579b006f | 424 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iManufacturer, (unsigned char *)manufacturer, mnf_len) < 0) |
22d12cda | 425 | { |
f3f81007 | 426 | ftdi_usb_close_internal (ftdi); |
579b006f | 427 | ftdi_error_return(-7, "libusb_get_string_descriptor_ascii() failed"); |
474786c0 TJ |
428 | } |
429 | } | |
430 | ||
22d12cda TJ |
431 | if (description != NULL) |
432 | { | |
579b006f | 433 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)description, desc_len) < 0) |
22d12cda | 434 | { |
f3f81007 | 435 | ftdi_usb_close_internal (ftdi); |
579b006f | 436 | ftdi_error_return(-8, "libusb_get_string_descriptor_ascii() failed"); |
474786c0 TJ |
437 | } |
438 | } | |
439 | ||
22d12cda TJ |
440 | if (serial != NULL) |
441 | { | |
579b006f | 442 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)serial, serial_len) < 0) |
22d12cda | 443 | { |
f3f81007 | 444 | ftdi_usb_close_internal (ftdi); |
579b006f | 445 | ftdi_error_return(-9, "libusb_get_string_descriptor_ascii() failed"); |
474786c0 TJ |
446 | } |
447 | } | |
448 | ||
579b006f | 449 | ftdi_usb_close_internal (ftdi); |
474786c0 TJ |
450 | |
451 | return 0; | |
452 | } | |
453 | ||
454 | /** | |
e2f12a4f TJ |
455 | * Internal function to determine the maximum packet size. |
456 | * \param ftdi pointer to ftdi_context | |
457 | * \param dev libusb usb_dev to use | |
458 | * \retval Maximum packet size for this device | |
459 | */ | |
579b006f | 460 | static unsigned int _ftdi_determine_max_packet_size(struct ftdi_context *ftdi, libusb_device *dev) |
e2f12a4f | 461 | { |
579b006f JZ |
462 | struct libusb_device_descriptor desc; |
463 | struct libusb_config_descriptor *config0; | |
e2f12a4f TJ |
464 | unsigned int packet_size; |
465 | ||
22a1b5c1 TJ |
466 | // Sanity check |
467 | if (ftdi == NULL || dev == NULL) | |
468 | return 64; | |
469 | ||
e2f12a4f TJ |
470 | // Determine maximum packet size. Init with default value. |
471 | // New hi-speed devices from FTDI use a packet size of 512 bytes | |
472 | // but could be connected to a normal speed USB hub -> 64 bytes packet size. | |
c7e4c09e | 473 | if (ftdi->type == TYPE_2232H || ftdi->type == TYPE_4232H || ftdi->type == TYPE_232H ) |
e2f12a4f TJ |
474 | packet_size = 512; |
475 | else | |
476 | packet_size = 64; | |
477 | ||
579b006f JZ |
478 | if (libusb_get_device_descriptor(dev, &desc) < 0) |
479 | return packet_size; | |
480 | ||
481 | if (libusb_get_config_descriptor(dev, 0, &config0) < 0) | |
482 | return packet_size; | |
e2f12a4f | 483 | |
579b006f JZ |
484 | if (desc.bNumConfigurations > 0) |
485 | { | |
486 | if (ftdi->interface < config0->bNumInterfaces) | |
e2f12a4f | 487 | { |
579b006f | 488 | struct libusb_interface interface = config0->interface[ftdi->interface]; |
e2f12a4f TJ |
489 | if (interface.num_altsetting > 0) |
490 | { | |
579b006f | 491 | struct libusb_interface_descriptor descriptor = interface.altsetting[0]; |
e2f12a4f TJ |
492 | if (descriptor.bNumEndpoints > 0) |
493 | { | |
494 | packet_size = descriptor.endpoint[0].wMaxPacketSize; | |
495 | } | |
496 | } | |
497 | } | |
498 | } | |
499 | ||
579b006f | 500 | libusb_free_config_descriptor (config0); |
e2f12a4f TJ |
501 | return packet_size; |
502 | } | |
503 | ||
504 | /** | |
418aaa72 | 505 | Opens a ftdi device given by an usb_device. |
7b18bef6 | 506 | |
1941414d TJ |
507 | \param ftdi pointer to ftdi_context |
508 | \param dev libusb usb_dev to use | |
509 | ||
510 | \retval 0: all fine | |
23b1798d | 511 | \retval -3: unable to config device |
1941414d TJ |
512 | \retval -4: unable to open device |
513 | \retval -5: unable to claim device | |
514 | \retval -6: reset failed | |
515 | \retval -7: set baudrate failed | |
22a1b5c1 | 516 | \retval -8: ftdi context invalid |
579b006f JZ |
517 | \retval -9: libusb_get_device_descriptor() failed |
518 | \retval -10: libusb_get_config_descriptor() failed | |
e375e6cb | 519 | \retval -11: libusb_detach_kernel_driver() failed |
579b006f | 520 | \retval -12: libusb_get_configuration() failed |
7b18bef6 | 521 | */ |
579b006f | 522 | int ftdi_usb_open_dev(struct ftdi_context *ftdi, libusb_device *dev) |
7b18bef6 | 523 | { |
579b006f JZ |
524 | struct libusb_device_descriptor desc; |
525 | struct libusb_config_descriptor *config0; | |
43aee24f | 526 | int cfg, cfg0, detach_errno = 0; |
579b006f | 527 | |
22a1b5c1 TJ |
528 | if (ftdi == NULL) |
529 | ftdi_error_return(-8, "ftdi context invalid"); | |
530 | ||
579b006f JZ |
531 | if (libusb_open(dev, &ftdi->usb_dev) < 0) |
532 | ftdi_error_return(-4, "libusb_open() failed"); | |
533 | ||
534 | if (libusb_get_device_descriptor(dev, &desc) < 0) | |
535 | ftdi_error_return(-9, "libusb_get_device_descriptor() failed"); | |
536 | ||
537 | if (libusb_get_config_descriptor(dev, 0, &config0) < 0) | |
538 | ftdi_error_return(-10, "libusb_get_config_descriptor() failed"); | |
539 | cfg0 = config0->bConfigurationValue; | |
540 | libusb_free_config_descriptor (config0); | |
d2f10023 | 541 | |
22592e17 | 542 | // Try to detach ftdi_sio kernel module. |
22592e17 TJ |
543 | // |
544 | // The return code is kept in a separate variable and only parsed | |
545 | // if usb_set_configuration() or usb_claim_interface() fails as the | |
546 | // detach operation might be denied and everything still works fine. | |
547 | // Likely scenario is a static ftdi_sio kernel module. | |
a3d86bdb TJ |
548 | if (ftdi->module_detach_mode == AUTO_DETACH_SIO_MODULE) |
549 | { | |
550 | if (libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface) !=0) | |
551 | detach_errno = errno; | |
552 | } | |
d2f10023 | 553 | |
579b006f JZ |
554 | if (libusb_get_configuration (ftdi->usb_dev, &cfg) < 0) |
555 | ftdi_error_return(-12, "libusb_get_configuration () failed"); | |
b57aedfd GE |
556 | // set configuration (needed especially for windows) |
557 | // tolerate EBUSY: one device with one configuration, but two interfaces | |
558 | // and libftdi sessions to both interfaces (e.g. FT2232) | |
579b006f | 559 | if (desc.bNumConfigurations > 0 && cfg != cfg0) |
b57aedfd | 560 | { |
579b006f | 561 | if (libusb_set_configuration(ftdi->usb_dev, cfg0) < 0) |
22d12cda | 562 | { |
a56ba2bd | 563 | ftdi_usb_close_internal (ftdi); |
56ac0383 | 564 | if (detach_errno == EPERM) |
43aee24f UB |
565 | { |
566 | ftdi_error_return(-8, "inappropriate permissions on device!"); | |
567 | } | |
568 | else | |
569 | { | |
c16b162d | 570 | ftdi_error_return(-3, "unable to set usb configuration. Make sure the default FTDI driver is not in use"); |
43aee24f | 571 | } |
23b1798d TJ |
572 | } |
573 | } | |
574 | ||
579b006f | 575 | if (libusb_claim_interface(ftdi->usb_dev, ftdi->interface) < 0) |
22d12cda | 576 | { |
f3f81007 | 577 | ftdi_usb_close_internal (ftdi); |
56ac0383 | 578 | if (detach_errno == EPERM) |
43aee24f UB |
579 | { |
580 | ftdi_error_return(-8, "inappropriate permissions on device!"); | |
581 | } | |
582 | else | |
583 | { | |
c16b162d | 584 | ftdi_error_return(-5, "unable to claim usb device. Make sure the default FTDI driver is not in use"); |
43aee24f | 585 | } |
7b18bef6 TJ |
586 | } |
587 | ||
22d12cda TJ |
588 | if (ftdi_usb_reset (ftdi) != 0) |
589 | { | |
f3f81007 | 590 | ftdi_usb_close_internal (ftdi); |
7b18bef6 TJ |
591 | ftdi_error_return(-6, "ftdi_usb_reset failed"); |
592 | } | |
593 | ||
7b18bef6 TJ |
594 | // Try to guess chip type |
595 | // Bug in the BM type chips: bcdDevice is 0x200 for serial == 0 | |
579b006f | 596 | if (desc.bcdDevice == 0x400 || (desc.bcdDevice == 0x200 |
56ac0383 | 597 | && desc.iSerialNumber == 0)) |
7b18bef6 | 598 | ftdi->type = TYPE_BM; |
579b006f | 599 | else if (desc.bcdDevice == 0x200) |
7b18bef6 | 600 | ftdi->type = TYPE_AM; |
579b006f | 601 | else if (desc.bcdDevice == 0x500) |
7b18bef6 | 602 | ftdi->type = TYPE_2232C; |
579b006f | 603 | else if (desc.bcdDevice == 0x600) |
cb6250fa | 604 | ftdi->type = TYPE_R; |
579b006f | 605 | else if (desc.bcdDevice == 0x700) |
0beb9686 | 606 | ftdi->type = TYPE_2232H; |
579b006f | 607 | else if (desc.bcdDevice == 0x800) |
0beb9686 | 608 | ftdi->type = TYPE_4232H; |
c7e4c09e UB |
609 | else if (desc.bcdDevice == 0x900) |
610 | ftdi->type = TYPE_232H; | |
7b18bef6 | 611 | |
e2f12a4f TJ |
612 | // Determine maximum packet size |
613 | ftdi->max_packet_size = _ftdi_determine_max_packet_size(ftdi, dev); | |
614 | ||
ef6f4838 TE |
615 | if (ftdi_set_baudrate (ftdi, 9600) != 0) |
616 | { | |
617 | ftdi_usb_close_internal (ftdi); | |
618 | ftdi_error_return(-7, "set baudrate failed"); | |
619 | } | |
620 | ||
7b18bef6 TJ |
621 | ftdi_error_return(0, "all fine"); |
622 | } | |
623 | ||
1941414d TJ |
624 | /** |
625 | Opens the first device with a given vendor and product ids. | |
626 | ||
627 | \param ftdi pointer to ftdi_context | |
628 | \param vendor Vendor ID | |
629 | \param product Product ID | |
630 | ||
9bec2387 | 631 | \retval same as ftdi_usb_open_desc() |
1941414d | 632 | */ |
edb82cbf TJ |
633 | int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product) |
634 | { | |
635 | return ftdi_usb_open_desc(ftdi, vendor, product, NULL, NULL); | |
636 | } | |
637 | ||
1941414d TJ |
638 | /** |
639 | Opens the first device with a given, vendor id, product id, | |
640 | description and serial. | |
641 | ||
642 | \param ftdi pointer to ftdi_context | |
643 | \param vendor Vendor ID | |
644 | \param product Product ID | |
645 | \param description Description to search for. Use NULL if not needed. | |
646 | \param serial Serial to search for. Use NULL if not needed. | |
647 | ||
648 | \retval 0: all fine | |
1941414d TJ |
649 | \retval -3: usb device not found |
650 | \retval -4: unable to open device | |
651 | \retval -5: unable to claim device | |
652 | \retval -6: reset failed | |
653 | \retval -7: set baudrate failed | |
654 | \retval -8: get product description failed | |
655 | \retval -9: get serial number failed | |
579b006f JZ |
656 | \retval -12: libusb_get_device_list() failed |
657 | \retval -13: libusb_get_device_descriptor() failed | |
a3da1d95 | 658 | */ |
04e1ea0a | 659 | int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product, |
a8f46ddc TJ |
660 | const char* description, const char* serial) |
661 | { | |
5ebbdab9 GE |
662 | return ftdi_usb_open_desc_index(ftdi,vendor,product,description,serial,0); |
663 | } | |
664 | ||
665 | /** | |
666 | Opens the index-th device with a given, vendor id, product id, | |
667 | description and serial. | |
668 | ||
669 | \param ftdi pointer to ftdi_context | |
670 | \param vendor Vendor ID | |
671 | \param product Product ID | |
672 | \param description Description to search for. Use NULL if not needed. | |
673 | \param serial Serial to search for. Use NULL if not needed. | |
674 | \param index Number of matching device to open if there are more than one, starts with 0. | |
675 | ||
676 | \retval 0: all fine | |
677 | \retval -1: usb_find_busses() failed | |
678 | \retval -2: usb_find_devices() failed | |
679 | \retval -3: usb device not found | |
680 | \retval -4: unable to open device | |
681 | \retval -5: unable to claim device | |
682 | \retval -6: reset failed | |
683 | \retval -7: set baudrate failed | |
684 | \retval -8: get product description failed | |
685 | \retval -9: get serial number failed | |
686 | \retval -10: unable to close device | |
22a1b5c1 | 687 | \retval -11: ftdi context invalid |
5ebbdab9 GE |
688 | */ |
689 | int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product, | |
56ac0383 | 690 | const char* description, const char* serial, unsigned int index) |
5ebbdab9 | 691 | { |
579b006f JZ |
692 | libusb_device *dev; |
693 | libusb_device **devs; | |
c3d95b87 | 694 | char string[256]; |
579b006f | 695 | int i = 0; |
98452d97 | 696 | |
22a1b5c1 TJ |
697 | if (ftdi == NULL) |
698 | ftdi_error_return(-11, "ftdi context invalid"); | |
699 | ||
02212d8e | 700 | if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) |
99650502 UB |
701 | ftdi_error_return(-12, "libusb_get_device_list() failed"); |
702 | ||
579b006f | 703 | while ((dev = devs[i++]) != NULL) |
22d12cda | 704 | { |
579b006f | 705 | struct libusb_device_descriptor desc; |
99650502 | 706 | int res; |
579b006f JZ |
707 | |
708 | if (libusb_get_device_descriptor(dev, &desc) < 0) | |
99650502 | 709 | ftdi_error_return_free_device_list(-13, "libusb_get_device_descriptor() failed", devs); |
579b006f JZ |
710 | |
711 | if (desc.idVendor == vendor && desc.idProduct == product) | |
22d12cda | 712 | { |
579b006f | 713 | if (libusb_open(dev, &ftdi->usb_dev) < 0) |
99650502 | 714 | ftdi_error_return_free_device_list(-4, "usb_open() failed", devs); |
c3d95b87 | 715 | |
579b006f JZ |
716 | if (description != NULL) |
717 | { | |
718 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)string, sizeof(string)) < 0) | |
22d12cda | 719 | { |
d4afae5f | 720 | ftdi_usb_close_internal (ftdi); |
99650502 | 721 | ftdi_error_return_free_device_list(-8, "unable to fetch product description", devs); |
a8f46ddc | 722 | } |
579b006f | 723 | if (strncmp(string, description, sizeof(string)) != 0) |
22d12cda | 724 | { |
d4afae5f | 725 | ftdi_usb_close_internal (ftdi); |
579b006f | 726 | continue; |
a8f46ddc | 727 | } |
579b006f JZ |
728 | } |
729 | if (serial != NULL) | |
730 | { | |
731 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)string, sizeof(string)) < 0) | |
732 | { | |
733 | ftdi_usb_close_internal (ftdi); | |
99650502 | 734 | ftdi_error_return_free_device_list(-9, "unable to fetch serial number", devs); |
579b006f JZ |
735 | } |
736 | if (strncmp(string, serial, sizeof(string)) != 0) | |
737 | { | |
738 | ftdi_usb_close_internal (ftdi); | |
739 | continue; | |
740 | } | |
741 | } | |
98452d97 | 742 | |
579b006f | 743 | ftdi_usb_close_internal (ftdi); |
d2f10023 | 744 | |
56ac0383 TJ |
745 | if (index > 0) |
746 | { | |
747 | index--; | |
748 | continue; | |
749 | } | |
5ebbdab9 | 750 | |
99650502 UB |
751 | res = ftdi_usb_open_dev(ftdi, dev); |
752 | libusb_free_device_list(devs,1); | |
753 | return res; | |
98452d97 | 754 | } |
98452d97 | 755 | } |
a3da1d95 | 756 | |
98452d97 | 757 | // device not found |
99650502 | 758 | ftdi_error_return_free_device_list(-3, "device not found", devs); |
a3da1d95 GE |
759 | } |
760 | ||
1941414d | 761 | /** |
5ebbdab9 GE |
762 | Opens the ftdi-device described by a description-string. |
763 | Intended to be used for parsing a device-description given as commandline argument. | |
764 | ||
765 | \param ftdi pointer to ftdi_context | |
766 | \param description NULL-terminated description-string, using this format: | |
767 | \li <tt>d:\<devicenode></tt> path of bus and device-node (e.g. "003/001") within usb device tree (usually at /proc/bus/usb/) | |
768 | \li <tt>i:\<vendor>:\<product></tt> first device with given vendor and product id, ids can be decimal, octal (preceded by "0") or hex (preceded by "0x") | |
769 | \li <tt>i:\<vendor>:\<product>:\<index></tt> as above with index being the number of the device (starting with 0) if there are more than one | |
770 | \li <tt>s:\<vendor>:\<product>:\<serial></tt> first device with given vendor id, product id and serial string | |
771 | ||
772 | \note The description format may be extended in later versions. | |
773 | ||
774 | \retval 0: all fine | |
579b006f | 775 | \retval -2: libusb_get_device_list() failed |
5ebbdab9 GE |
776 | \retval -3: usb device not found |
777 | \retval -4: unable to open device | |
778 | \retval -5: unable to claim device | |
779 | \retval -6: reset failed | |
780 | \retval -7: set baudrate failed | |
781 | \retval -8: get product description failed | |
782 | \retval -9: get serial number failed | |
783 | \retval -10: unable to close device | |
784 | \retval -11: illegal description format | |
22a1b5c1 | 785 | \retval -12: ftdi context invalid |
5ebbdab9 GE |
786 | */ |
787 | int ftdi_usb_open_string(struct ftdi_context *ftdi, const char* description) | |
788 | { | |
22a1b5c1 TJ |
789 | if (ftdi == NULL) |
790 | ftdi_error_return(-12, "ftdi context invalid"); | |
791 | ||
5ebbdab9 GE |
792 | if (description[0] == 0 || description[1] != ':') |
793 | ftdi_error_return(-11, "illegal description format"); | |
794 | ||
795 | if (description[0] == 'd') | |
796 | { | |
579b006f JZ |
797 | libusb_device *dev; |
798 | libusb_device **devs; | |
56ac0383 TJ |
799 | unsigned int bus_number, device_address; |
800 | int i = 0; | |
579b006f | 801 | |
56ac0383 TJ |
802 | if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) |
803 | ftdi_error_return(-2, "libusb_get_device_list() failed"); | |
5ebbdab9 | 804 | |
579b006f JZ |
805 | /* XXX: This doesn't handle symlinks/odd paths/etc... */ |
806 | if (sscanf (description + 2, "%u/%u", &bus_number, &device_address) != 2) | |
56ac0383 | 807 | ftdi_error_return_free_device_list(-11, "illegal description format", devs); |
5ebbdab9 | 808 | |
56ac0383 | 809 | while ((dev = devs[i++]) != NULL) |
5ebbdab9 | 810 | { |
99650502 | 811 | int ret; |
56ac0383 TJ |
812 | if (bus_number == libusb_get_bus_number (dev) |
813 | && device_address == libusb_get_device_address (dev)) | |
99650502 UB |
814 | { |
815 | ret = ftdi_usb_open_dev(ftdi, dev); | |
816 | libusb_free_device_list(devs,1); | |
817 | return ret; | |
818 | } | |
5ebbdab9 GE |
819 | } |
820 | ||
821 | // device not found | |
99650502 | 822 | ftdi_error_return_free_device_list(-3, "device not found", devs); |
5ebbdab9 GE |
823 | } |
824 | else if (description[0] == 'i' || description[0] == 's') | |
825 | { | |
826 | unsigned int vendor; | |
827 | unsigned int product; | |
828 | unsigned int index=0; | |
0e6cf62b | 829 | const char *serial=NULL; |
5ebbdab9 GE |
830 | const char *startp, *endp; |
831 | ||
832 | errno=0; | |
833 | startp=description+2; | |
834 | vendor=strtoul((char*)startp,(char**)&endp,0); | |
835 | if (*endp != ':' || endp == startp || errno != 0) | |
836 | ftdi_error_return(-11, "illegal description format"); | |
837 | ||
838 | startp=endp+1; | |
839 | product=strtoul((char*)startp,(char**)&endp,0); | |
840 | if (endp == startp || errno != 0) | |
841 | ftdi_error_return(-11, "illegal description format"); | |
842 | ||
843 | if (description[0] == 'i' && *endp != 0) | |
844 | { | |
845 | /* optional index field in i-mode */ | |
846 | if (*endp != ':') | |
847 | ftdi_error_return(-11, "illegal description format"); | |
848 | ||
849 | startp=endp+1; | |
850 | index=strtoul((char*)startp,(char**)&endp,0); | |
851 | if (*endp != 0 || endp == startp || errno != 0) | |
852 | ftdi_error_return(-11, "illegal description format"); | |
853 | } | |
854 | if (description[0] == 's') | |
855 | { | |
856 | if (*endp != ':') | |
857 | ftdi_error_return(-11, "illegal description format"); | |
858 | ||
859 | /* rest of the description is the serial */ | |
860 | serial=endp+1; | |
861 | } | |
862 | ||
863 | return ftdi_usb_open_desc_index(ftdi, vendor, product, NULL, serial, index); | |
864 | } | |
865 | else | |
866 | { | |
867 | ftdi_error_return(-11, "illegal description format"); | |
868 | } | |
869 | } | |
870 | ||
871 | /** | |
1941414d | 872 | Resets the ftdi device. |
a3da1d95 | 873 | |
1941414d TJ |
874 | \param ftdi pointer to ftdi_context |
875 | ||
876 | \retval 0: all fine | |
877 | \retval -1: FTDI reset failed | |
22a1b5c1 | 878 | \retval -2: USB device unavailable |
4837f98a | 879 | */ |
edb82cbf | 880 | int ftdi_usb_reset(struct ftdi_context *ftdi) |
a8f46ddc | 881 | { |
22a1b5c1 TJ |
882 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
883 | ftdi_error_return(-2, "USB device unavailable"); | |
884 | ||
579b006f JZ |
885 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
886 | SIO_RESET_REQUEST, SIO_RESET_SIO, | |
887 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
22d12cda | 888 | ftdi_error_return(-1,"FTDI reset failed"); |
c3d95b87 | 889 | |
545820ce | 890 | // Invalidate data in the readbuffer |
bfcee05b TJ |
891 | ftdi->readbuffer_offset = 0; |
892 | ftdi->readbuffer_remaining = 0; | |
893 | ||
a3da1d95 GE |
894 | return 0; |
895 | } | |
896 | ||
1941414d | 897 | /** |
1189b11a | 898 | Clears the read buffer on the chip and the internal read buffer. |
1941414d TJ |
899 | |
900 | \param ftdi pointer to ftdi_context | |
4837f98a | 901 | |
1941414d | 902 | \retval 0: all fine |
1189b11a | 903 | \retval -1: read buffer purge failed |
22a1b5c1 | 904 | \retval -2: USB device unavailable |
4837f98a | 905 | */ |
1189b11a | 906 | int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi) |
a8f46ddc | 907 | { |
22a1b5c1 TJ |
908 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
909 | ftdi_error_return(-2, "USB device unavailable"); | |
910 | ||
579b006f JZ |
911 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
912 | SIO_RESET_REQUEST, SIO_RESET_PURGE_RX, | |
913 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 TJ |
914 | ftdi_error_return(-1, "FTDI purge of RX buffer failed"); |
915 | ||
545820ce | 916 | // Invalidate data in the readbuffer |
bfcee05b TJ |
917 | ftdi->readbuffer_offset = 0; |
918 | ftdi->readbuffer_remaining = 0; | |
a60be878 | 919 | |
1189b11a TJ |
920 | return 0; |
921 | } | |
922 | ||
923 | /** | |
924 | Clears the write buffer on the chip. | |
925 | ||
926 | \param ftdi pointer to ftdi_context | |
927 | ||
928 | \retval 0: all fine | |
929 | \retval -1: write buffer purge failed | |
22a1b5c1 | 930 | \retval -2: USB device unavailable |
1189b11a TJ |
931 | */ |
932 | int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi) | |
933 | { | |
22a1b5c1 TJ |
934 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
935 | ftdi_error_return(-2, "USB device unavailable"); | |
936 | ||
579b006f JZ |
937 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
938 | SIO_RESET_REQUEST, SIO_RESET_PURGE_TX, | |
939 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
1189b11a TJ |
940 | ftdi_error_return(-1, "FTDI purge of TX buffer failed"); |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
945 | /** | |
946 | Clears the buffers on the chip and the internal read buffer. | |
947 | ||
948 | \param ftdi pointer to ftdi_context | |
949 | ||
950 | \retval 0: all fine | |
951 | \retval -1: read buffer purge failed | |
952 | \retval -2: write buffer purge failed | |
22a1b5c1 | 953 | \retval -3: USB device unavailable |
1189b11a TJ |
954 | */ |
955 | int ftdi_usb_purge_buffers(struct ftdi_context *ftdi) | |
956 | { | |
957 | int result; | |
958 | ||
22a1b5c1 TJ |
959 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
960 | ftdi_error_return(-3, "USB device unavailable"); | |
961 | ||
1189b11a | 962 | result = ftdi_usb_purge_rx_buffer(ftdi); |
5a2b51cb | 963 | if (result < 0) |
1189b11a TJ |
964 | return -1; |
965 | ||
966 | result = ftdi_usb_purge_tx_buffer(ftdi); | |
5a2b51cb | 967 | if (result < 0) |
1189b11a | 968 | return -2; |
545820ce | 969 | |
a60be878 TJ |
970 | return 0; |
971 | } | |
a3da1d95 | 972 | |
f3f81007 TJ |
973 | |
974 | ||
1941414d TJ |
975 | /** |
976 | Closes the ftdi device. Call ftdi_deinit() if you're cleaning up. | |
977 | ||
978 | \param ftdi pointer to ftdi_context | |
979 | ||
980 | \retval 0: all fine | |
981 | \retval -1: usb_release failed | |
22a1b5c1 | 982 | \retval -3: ftdi context invalid |
a3da1d95 | 983 | */ |
a8f46ddc TJ |
984 | int ftdi_usb_close(struct ftdi_context *ftdi) |
985 | { | |
a3da1d95 GE |
986 | int rtn = 0; |
987 | ||
22a1b5c1 TJ |
988 | if (ftdi == NULL) |
989 | ftdi_error_return(-3, "ftdi context invalid"); | |
990 | ||
dff4fdb0 | 991 | if (ftdi->usb_dev != NULL) |
579b006f | 992 | if (libusb_release_interface(ftdi->usb_dev, ftdi->interface) < 0) |
dff4fdb0 | 993 | rtn = -1; |
98452d97 | 994 | |
579b006f | 995 | ftdi_usb_close_internal (ftdi); |
98452d97 | 996 | |
a3da1d95 GE |
997 | return rtn; |
998 | } | |
999 | ||
f15786e4 UB |
1000 | /* ftdi_to_clkbits_AM For the AM device, convert a requested baudrate |
1001 | to encoded divisor and the achievable baudrate | |
53ad271d | 1002 | Function is only used internally |
b5ec1820 | 1003 | \internal |
f15786e4 UB |
1004 | |
1005 | See AN120 | |
1006 | clk/1 -> 0 | |
1007 | clk/1.5 -> 1 | |
1008 | clk/2 -> 2 | |
1009 | From /2, 0.125/ 0.25 and 0.5 steps may be taken | |
1010 | The fractional part has frac_code encoding | |
53ad271d | 1011 | */ |
f15786e4 UB |
1012 | static int ftdi_to_clkbits_AM(int baudrate, unsigned long *encoded_divisor) |
1013 | ||
a8f46ddc | 1014 | { |
f15786e4 | 1015 | static const char frac_code[8] = {0, 3, 2, 4, 1, 5, 6, 7}; |
53ad271d TJ |
1016 | static const char am_adjust_up[8] = {0, 0, 0, 1, 0, 3, 2, 1}; |
1017 | static const char am_adjust_dn[8] = {0, 0, 0, 1, 0, 1, 2, 3}; | |
53ad271d | 1018 | int divisor, best_divisor, best_baud, best_baud_diff; |
53ad271d | 1019 | divisor = 24000000 / baudrate; |
f15786e4 | 1020 | int i; |
53ad271d | 1021 | |
f15786e4 UB |
1022 | // Round down to supported fraction (AM only) |
1023 | divisor -= am_adjust_dn[divisor & 7]; | |
53ad271d TJ |
1024 | |
1025 | // Try this divisor and the one above it (because division rounds down) | |
1026 | best_divisor = 0; | |
1027 | best_baud = 0; | |
1028 | best_baud_diff = 0; | |
22d12cda TJ |
1029 | for (i = 0; i < 2; i++) |
1030 | { | |
53ad271d TJ |
1031 | int try_divisor = divisor + i; |
1032 | int baud_estimate; | |
1033 | int baud_diff; | |
1034 | ||
1035 | // Round up to supported divisor value | |
22d12cda TJ |
1036 | if (try_divisor <= 8) |
1037 | { | |
53ad271d TJ |
1038 | // Round up to minimum supported divisor |
1039 | try_divisor = 8; | |
22d12cda | 1040 | } |
22d12cda TJ |
1041 | else if (divisor < 16) |
1042 | { | |
53ad271d TJ |
1043 | // AM doesn't support divisors 9 through 15 inclusive |
1044 | try_divisor = 16; | |
22d12cda TJ |
1045 | } |
1046 | else | |
1047 | { | |
f15786e4 UB |
1048 | // Round up to supported fraction (AM only) |
1049 | try_divisor += am_adjust_up[try_divisor & 7]; | |
1050 | if (try_divisor > 0x1FFF8) | |
22d12cda | 1051 | { |
f15786e4 UB |
1052 | // Round down to maximum supported divisor value (for AM) |
1053 | try_divisor = 0x1FFF8; | |
53ad271d TJ |
1054 | } |
1055 | } | |
1056 | // Get estimated baud rate (to nearest integer) | |
1057 | baud_estimate = (24000000 + (try_divisor / 2)) / try_divisor; | |
1058 | // Get absolute difference from requested baud rate | |
22d12cda TJ |
1059 | if (baud_estimate < baudrate) |
1060 | { | |
53ad271d | 1061 | baud_diff = baudrate - baud_estimate; |
22d12cda TJ |
1062 | } |
1063 | else | |
1064 | { | |
53ad271d TJ |
1065 | baud_diff = baud_estimate - baudrate; |
1066 | } | |
22d12cda TJ |
1067 | if (i == 0 || baud_diff < best_baud_diff) |
1068 | { | |
53ad271d TJ |
1069 | // Closest to requested baud rate so far |
1070 | best_divisor = try_divisor; | |
1071 | best_baud = baud_estimate; | |
1072 | best_baud_diff = baud_diff; | |
22d12cda TJ |
1073 | if (baud_diff == 0) |
1074 | { | |
53ad271d TJ |
1075 | // Spot on! No point trying |
1076 | break; | |
1077 | } | |
1078 | } | |
1079 | } | |
1080 | // Encode the best divisor value | |
f15786e4 | 1081 | *encoded_divisor = (best_divisor >> 3) | (frac_code[best_divisor & 7] << 14); |
53ad271d | 1082 | // Deal with special cases for encoded value |
f15786e4 | 1083 | if (*encoded_divisor == 1) |
22d12cda | 1084 | { |
f15786e4 | 1085 | *encoded_divisor = 0; // 3000000 baud |
22d12cda | 1086 | } |
f15786e4 UB |
1087 | else if (*encoded_divisor == 0x4001) |
1088 | { | |
1089 | *encoded_divisor = 1; // 2000000 baud (BM only) | |
1090 | } | |
1091 | return best_baud; | |
1092 | } | |
1093 | ||
1094 | /* ftdi_to_clkbits Convert a requested baudrate for a given system clock and predivisor | |
1095 | to encoded divisor and the achievable baudrate | |
1096 | Function is only used internally | |
1097 | \internal | |
1098 | ||
1099 | See AN120 | |
1100 | clk/1 -> 0 | |
1101 | clk/1.5 -> 1 | |
1102 | clk/2 -> 2 | |
1103 | From /2, 0.125 steps may be taken. | |
1104 | The fractional part has frac_code encoding | |
9956d428 UB |
1105 | |
1106 | value[13:0] of value is the divisor | |
1107 | index[9] mean 12 MHz Base(120 MHz/10) rate versus 3 MHz (48 MHz/16) else | |
1108 | ||
1109 | H Type have all features above with | |
1110 | {index[8],value[15:14]} is the encoded subdivisor | |
1111 | ||
1112 | FT232R, FT2232 and FT232BM have no option for 12 MHz and with | |
1113 | {index[0],value[15:14]} is the encoded subdivisor | |
1114 | ||
1115 | AM Type chips have only four fractional subdivisors at value[15:14] | |
1116 | for subdivisors 0, 0.5, 0.25, 0.125 | |
f15786e4 UB |
1117 | */ |
1118 | static int ftdi_to_clkbits(int baudrate, unsigned int clk, int clk_div, unsigned long *encoded_divisor) | |
1119 | { | |
1120 | static const char frac_code[8] = {0, 3, 2, 4, 1, 5, 6, 7}; | |
1121 | int best_baud = 0; | |
1122 | int divisor, best_divisor; | |
1123 | if (baudrate >= clk/clk_div) | |
1124 | { | |
1125 | *encoded_divisor = 0; | |
1126 | best_baud = clk/clk_div; | |
1127 | } | |
1128 | else if (baudrate >= clk/(clk_div + clk_div/2)) | |
1129 | { | |
1130 | *encoded_divisor = 1; | |
1131 | best_baud = clk/(clk_div + clk_div/2); | |
1132 | } | |
1133 | else if (baudrate >= clk/(2*clk_div)) | |
1134 | { | |
1135 | *encoded_divisor = 2; | |
1136 | best_baud = clk/(2*clk_div); | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | /* We divide by 16 to have 3 fractional bits and one bit for rounding */ | |
1141 | divisor = clk*16/clk_div / baudrate; | |
1142 | if (divisor & 1) /* Decide if to round up or down*/ | |
1143 | best_divisor = divisor /2 +1; | |
1144 | else | |
1145 | best_divisor = divisor/2; | |
1146 | if(best_divisor > 0x20000) | |
1147 | best_divisor = 0x1ffff; | |
aae08071 UB |
1148 | best_baud = clk*16/clk_div/best_divisor; |
1149 | if (best_baud & 1) /* Decide if to round up or down*/ | |
1150 | best_baud = best_baud /2 +1; | |
1151 | else | |
1152 | best_baud = best_baud /2; | |
f15786e4 UB |
1153 | *encoded_divisor = (best_divisor >> 3) | (frac_code[best_divisor & 0x7] << 14); |
1154 | } | |
1155 | return best_baud; | |
1156 | } | |
1157 | /** | |
1158 | ftdi_convert_baudrate returns nearest supported baud rate to that requested. | |
1159 | Function is only used internally | |
1160 | \internal | |
1161 | */ | |
1162 | static int ftdi_convert_baudrate(int baudrate, struct ftdi_context *ftdi, | |
1163 | unsigned short *value, unsigned short *index) | |
1164 | { | |
1165 | int best_baud; | |
1166 | unsigned long encoded_divisor; | |
1167 | ||
1168 | if (baudrate <= 0) | |
1169 | { | |
1170 | // Return error | |
1171 | return -1; | |
1172 | } | |
1173 | ||
1174 | #define H_CLK 120000000 | |
1175 | #define C_CLK 48000000 | |
1176 | if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H) || (ftdi->type == TYPE_232H )) | |
1177 | { | |
1178 | if(baudrate*10 > H_CLK /0x3fff) | |
1179 | { | |
1180 | /* On H Devices, use 12 000 000 Baudrate when possible | |
1181 | We have a 14 bit divisor, a 1 bit divisor switch (10 or 16) | |
1182 | three fractional bits and a 120 MHz clock | |
1183 | Assume AN_120 "Sub-integer divisors between 0 and 2 are not allowed" holds for | |
1184 | DIV/10 CLK too, so /1, /1.5 and /2 can be handled the same*/ | |
1185 | best_baud = ftdi_to_clkbits(baudrate, H_CLK, 10, &encoded_divisor); | |
1186 | encoded_divisor |= 0x20000; /* switch on CLK/10*/ | |
1187 | } | |
1188 | else | |
1189 | best_baud = ftdi_to_clkbits(baudrate, C_CLK, 16, &encoded_divisor); | |
1190 | } | |
1191 | else if ((ftdi->type == TYPE_BM) || (ftdi->type == TYPE_2232C) || (ftdi->type == TYPE_R )) | |
1192 | { | |
1193 | best_baud = ftdi_to_clkbits(baudrate, C_CLK, 16, &encoded_divisor); | |
1194 | } | |
1195 | else | |
22d12cda | 1196 | { |
f15786e4 | 1197 | best_baud = ftdi_to_clkbits_AM(baudrate, &encoded_divisor); |
53ad271d TJ |
1198 | } |
1199 | // Split into "value" and "index" values | |
1200 | *value = (unsigned short)(encoded_divisor & 0xFFFF); | |
e03f60a1 | 1201 | if (ftdi->type == TYPE_2232H || |
f15786e4 | 1202 | ftdi->type == TYPE_4232H || ftdi->type == TYPE_232H ) |
22d12cda | 1203 | { |
0126d22e TJ |
1204 | *index = (unsigned short)(encoded_divisor >> 8); |
1205 | *index &= 0xFF00; | |
a9c57c05 | 1206 | *index |= ftdi->index; |
0126d22e TJ |
1207 | } |
1208 | else | |
1209 | *index = (unsigned short)(encoded_divisor >> 16); | |
c3d95b87 | 1210 | |
53ad271d TJ |
1211 | // Return the nearest baud rate |
1212 | return best_baud; | |
1213 | } | |
1214 | ||
1941414d | 1215 | /** |
ac6944cc TJ |
1216 | * @brief Wrapper function to export ftdi_convert_baudrate() to the unit test |
1217 | * Do not use, it's only for the unit test framework | |
1218 | **/ | |
1219 | int convert_baudrate_UT_export(int baudrate, struct ftdi_context *ftdi, | |
1220 | unsigned short *value, unsigned short *index) | |
1221 | { | |
1222 | return ftdi_convert_baudrate(baudrate, ftdi, value, index); | |
1223 | } | |
1224 | ||
1225 | /** | |
9bec2387 | 1226 | Sets the chip baud rate |
1941414d TJ |
1227 | |
1228 | \param ftdi pointer to ftdi_context | |
9bec2387 | 1229 | \param baudrate baud rate to set |
1941414d TJ |
1230 | |
1231 | \retval 0: all fine | |
1232 | \retval -1: invalid baudrate | |
1233 | \retval -2: setting baudrate failed | |
22a1b5c1 | 1234 | \retval -3: USB device unavailable |
a3da1d95 | 1235 | */ |
a8f46ddc TJ |
1236 | int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate) |
1237 | { | |
53ad271d TJ |
1238 | unsigned short value, index; |
1239 | int actual_baudrate; | |
a3da1d95 | 1240 | |
22a1b5c1 TJ |
1241 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1242 | ftdi_error_return(-3, "USB device unavailable"); | |
1243 | ||
22d12cda TJ |
1244 | if (ftdi->bitbang_enabled) |
1245 | { | |
a3da1d95 GE |
1246 | baudrate = baudrate*4; |
1247 | } | |
1248 | ||
25707904 | 1249 | actual_baudrate = ftdi_convert_baudrate(baudrate, ftdi, &value, &index); |
c3d95b87 TJ |
1250 | if (actual_baudrate <= 0) |
1251 | ftdi_error_return (-1, "Silly baudrate <= 0."); | |
a3da1d95 | 1252 | |
53ad271d TJ |
1253 | // Check within tolerance (about 5%) |
1254 | if ((actual_baudrate * 2 < baudrate /* Catch overflows */ ) | |
1255 | || ((actual_baudrate < baudrate) | |
1256 | ? (actual_baudrate * 21 < baudrate * 20) | |
c3d95b87 TJ |
1257 | : (baudrate * 21 < actual_baudrate * 20))) |
1258 | ftdi_error_return (-1, "Unsupported baudrate. Note: bitbang baudrates are automatically multiplied by 4"); | |
545820ce | 1259 | |
579b006f JZ |
1260 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
1261 | SIO_SET_BAUDRATE_REQUEST, value, | |
1262 | index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 | 1263 | ftdi_error_return (-2, "Setting new baudrate failed"); |
a3da1d95 GE |
1264 | |
1265 | ftdi->baudrate = baudrate; | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1941414d | 1269 | /** |
6c32e222 TJ |
1270 | Set (RS232) line characteristics. |
1271 | The break type can only be set via ftdi_set_line_property2() | |
1272 | and defaults to "off". | |
4837f98a | 1273 | |
1941414d TJ |
1274 | \param ftdi pointer to ftdi_context |
1275 | \param bits Number of bits | |
1276 | \param sbit Number of stop bits | |
1277 | \param parity Parity mode | |
1278 | ||
1279 | \retval 0: all fine | |
1280 | \retval -1: Setting line property failed | |
2f73e59f TJ |
1281 | */ |
1282 | int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits, | |
d2f10023 | 1283 | enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity) |
2f73e59f | 1284 | { |
6c32e222 TJ |
1285 | return ftdi_set_line_property2(ftdi, bits, sbit, parity, BREAK_OFF); |
1286 | } | |
1287 | ||
1288 | /** | |
1289 | Set (RS232) line characteristics | |
1290 | ||
1291 | \param ftdi pointer to ftdi_context | |
1292 | \param bits Number of bits | |
1293 | \param sbit Number of stop bits | |
1294 | \param parity Parity mode | |
1295 | \param break_type Break type | |
1296 | ||
1297 | \retval 0: all fine | |
1298 | \retval -1: Setting line property failed | |
22a1b5c1 | 1299 | \retval -2: USB device unavailable |
6c32e222 TJ |
1300 | */ |
1301 | int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits, | |
22d12cda TJ |
1302 | enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity, |
1303 | enum ftdi_break_type break_type) | |
6c32e222 | 1304 | { |
2f73e59f TJ |
1305 | unsigned short value = bits; |
1306 | ||
22a1b5c1 TJ |
1307 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1308 | ftdi_error_return(-2, "USB device unavailable"); | |
1309 | ||
22d12cda TJ |
1310 | switch (parity) |
1311 | { | |
1312 | case NONE: | |
1313 | value |= (0x00 << 8); | |
1314 | break; | |
1315 | case ODD: | |
1316 | value |= (0x01 << 8); | |
1317 | break; | |
1318 | case EVEN: | |
1319 | value |= (0x02 << 8); | |
1320 | break; | |
1321 | case MARK: | |
1322 | value |= (0x03 << 8); | |
1323 | break; | |
1324 | case SPACE: | |
1325 | value |= (0x04 << 8); | |
1326 | break; | |
2f73e59f | 1327 | } |
d2f10023 | 1328 | |
22d12cda TJ |
1329 | switch (sbit) |
1330 | { | |
1331 | case STOP_BIT_1: | |
1332 | value |= (0x00 << 11); | |
1333 | break; | |
1334 | case STOP_BIT_15: | |
1335 | value |= (0x01 << 11); | |
1336 | break; | |
1337 | case STOP_BIT_2: | |
1338 | value |= (0x02 << 11); | |
1339 | break; | |
2f73e59f | 1340 | } |
d2f10023 | 1341 | |
22d12cda TJ |
1342 | switch (break_type) |
1343 | { | |
1344 | case BREAK_OFF: | |
1345 | value |= (0x00 << 14); | |
1346 | break; | |
1347 | case BREAK_ON: | |
1348 | value |= (0x01 << 14); | |
1349 | break; | |
6c32e222 TJ |
1350 | } |
1351 | ||
579b006f JZ |
1352 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
1353 | SIO_SET_DATA_REQUEST, value, | |
1354 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
2f73e59f | 1355 | ftdi_error_return (-1, "Setting new line property failed"); |
d2f10023 | 1356 | |
2f73e59f TJ |
1357 | return 0; |
1358 | } | |
a3da1d95 | 1359 | |
1941414d TJ |
1360 | /** |
1361 | Writes data in chunks (see ftdi_write_data_set_chunksize()) to the chip | |
1362 | ||
1363 | \param ftdi pointer to ftdi_context | |
1364 | \param buf Buffer with the data | |
1365 | \param size Size of the buffer | |
1366 | ||
22a1b5c1 | 1367 | \retval -666: USB device unavailable |
1941414d TJ |
1368 | \retval <0: error code from usb_bulk_write() |
1369 | \retval >0: number of bytes written | |
1370 | */ | |
a8f46ddc TJ |
1371 | int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size) |
1372 | { | |
a3da1d95 | 1373 | int offset = 0; |
579b006f | 1374 | int actual_length; |
c3d95b87 | 1375 | |
22a1b5c1 TJ |
1376 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1377 | ftdi_error_return(-666, "USB device unavailable"); | |
1378 | ||
22d12cda TJ |
1379 | while (offset < size) |
1380 | { | |
948f9ada | 1381 | int write_size = ftdi->writebuffer_chunksize; |
a3da1d95 GE |
1382 | |
1383 | if (offset+write_size > size) | |
1384 | write_size = size-offset; | |
1385 | ||
579b006f JZ |
1386 | if (libusb_bulk_transfer(ftdi->usb_dev, ftdi->in_ep, buf+offset, write_size, &actual_length, ftdi->usb_write_timeout) < 0) |
1387 | ftdi_error_return(-1, "usb bulk write failed"); | |
a3da1d95 | 1388 | |
579b006f | 1389 | offset += actual_length; |
a3da1d95 GE |
1390 | } |
1391 | ||
579b006f | 1392 | return offset; |
a3da1d95 GE |
1393 | } |
1394 | ||
579b006f | 1395 | static void ftdi_read_data_cb(struct libusb_transfer *transfer) |
22d12cda | 1396 | { |
579b006f JZ |
1397 | struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data; |
1398 | struct ftdi_context *ftdi = tc->ftdi; | |
1399 | int packet_size, actual_length, num_of_chunks, chunk_remains, i, ret; | |
4c9e3812 | 1400 | |
b1139150 | 1401 | packet_size = ftdi->max_packet_size; |
579b006f JZ |
1402 | |
1403 | actual_length = transfer->actual_length; | |
1404 | ||
1405 | if (actual_length > 2) | |
1406 | { | |
1407 | // skip FTDI status bytes. | |
1408 | // Maybe stored in the future to enable modem use | |
1409 | num_of_chunks = actual_length / packet_size; | |
1410 | chunk_remains = actual_length % packet_size; | |
1411 | //printf("actual_length = %X, num_of_chunks = %X, chunk_remains = %X, readbuffer_offset = %X\n", actual_length, num_of_chunks, chunk_remains, ftdi->readbuffer_offset); | |
1412 | ||
1413 | ftdi->readbuffer_offset += 2; | |
1414 | actual_length -= 2; | |
1415 | ||
1416 | if (actual_length > packet_size - 2) | |
1417 | { | |
1418 | for (i = 1; i < num_of_chunks; i++) | |
56ac0383 TJ |
1419 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, |
1420 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1421 | packet_size - 2); | |
579b006f JZ |
1422 | if (chunk_remains > 2) |
1423 | { | |
1424 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, | |
1425 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1426 | chunk_remains-2); | |
1427 | actual_length -= 2*num_of_chunks; | |
1428 | } | |
1429 | else | |
56ac0383 | 1430 | actual_length -= 2*(num_of_chunks-1)+chunk_remains; |
579b006f JZ |
1431 | } |
1432 | ||
1433 | if (actual_length > 0) | |
1434 | { | |
1435 | // data still fits in buf? | |
1436 | if (tc->offset + actual_length <= tc->size) | |
1437 | { | |
1438 | memcpy (tc->buf + tc->offset, ftdi->readbuffer + ftdi->readbuffer_offset, actual_length); | |
1439 | //printf("buf[0] = %X, buf[1] = %X\n", buf[0], buf[1]); | |
1440 | tc->offset += actual_length; | |
1441 | ||
1442 | ftdi->readbuffer_offset = 0; | |
1443 | ftdi->readbuffer_remaining = 0; | |
1444 | ||
1445 | /* Did we read exactly the right amount of bytes? */ | |
1446 | if (tc->offset == tc->size) | |
1447 | { | |
1448 | //printf("read_data exact rem %d offset %d\n", | |
1449 | //ftdi->readbuffer_remaining, offset); | |
1450 | tc->completed = 1; | |
1451 | return; | |
1452 | } | |
1453 | } | |
1454 | else | |
1455 | { | |
1456 | // only copy part of the data or size <= readbuffer_chunksize | |
1457 | int part_size = tc->size - tc->offset; | |
1458 | memcpy (tc->buf + tc->offset, ftdi->readbuffer + ftdi->readbuffer_offset, part_size); | |
1459 | tc->offset += part_size; | |
1460 | ||
1461 | ftdi->readbuffer_offset += part_size; | |
1462 | ftdi->readbuffer_remaining = actual_length - part_size; | |
1463 | ||
1464 | /* printf("Returning part: %d - size: %d - offset: %d - actual_length: %d - remaining: %d\n", | |
1465 | part_size, size, offset, actual_length, ftdi->readbuffer_remaining); */ | |
1466 | tc->completed = 1; | |
1467 | return; | |
1468 | } | |
1469 | } | |
1470 | } | |
1471 | ret = libusb_submit_transfer (transfer); | |
1472 | if (ret < 0) | |
1473 | tc->completed = 1; | |
1474 | } | |
1475 | ||
1476 | ||
1477 | static void ftdi_write_data_cb(struct libusb_transfer *transfer) | |
7cc9950e | 1478 | { |
579b006f JZ |
1479 | struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data; |
1480 | struct ftdi_context *ftdi = tc->ftdi; | |
56ac0383 | 1481 | |
90ef163e | 1482 | tc->offset += transfer->actual_length; |
56ac0383 | 1483 | |
579b006f | 1484 | if (tc->offset == tc->size) |
22d12cda | 1485 | { |
579b006f | 1486 | tc->completed = 1; |
7cc9950e | 1487 | } |
579b006f JZ |
1488 | else |
1489 | { | |
1490 | int write_size = ftdi->writebuffer_chunksize; | |
1491 | int ret; | |
7cc9950e | 1492 | |
579b006f JZ |
1493 | if (tc->offset + write_size > tc->size) |
1494 | write_size = tc->size - tc->offset; | |
1495 | ||
1496 | transfer->length = write_size; | |
1497 | transfer->buffer = tc->buf + tc->offset; | |
1498 | ret = libusb_submit_transfer (transfer); | |
1499 | if (ret < 0) | |
1500 | tc->completed = 1; | |
1501 | } | |
7cc9950e GE |
1502 | } |
1503 | ||
579b006f | 1504 | |
84f85aaa | 1505 | /** |
579b006f JZ |
1506 | Writes data to the chip. Does not wait for completion of the transfer |
1507 | nor does it make sure that the transfer was successful. | |
1508 | ||
249888c8 | 1509 | Use libusb 1.0 asynchronous API. |
84f85aaa GE |
1510 | |
1511 | \param ftdi pointer to ftdi_context | |
579b006f JZ |
1512 | \param buf Buffer with the data |
1513 | \param size Size of the buffer | |
84f85aaa | 1514 | |
579b006f JZ |
1515 | \retval NULL: Some error happens when submit transfer |
1516 | \retval !NULL: Pointer to a ftdi_transfer_control | |
c201f80f | 1517 | */ |
579b006f JZ |
1518 | |
1519 | struct ftdi_transfer_control *ftdi_write_data_submit(struct ftdi_context *ftdi, unsigned char *buf, int size) | |
7cc9950e | 1520 | { |
579b006f | 1521 | struct ftdi_transfer_control *tc; |
5e77e870 | 1522 | struct libusb_transfer *transfer; |
579b006f | 1523 | int write_size, ret; |
22d12cda | 1524 | |
22a1b5c1 | 1525 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
22a1b5c1 | 1526 | return NULL; |
22a1b5c1 | 1527 | |
579b006f | 1528 | tc = (struct ftdi_transfer_control *) malloc (sizeof (*tc)); |
5e77e870 TJ |
1529 | if (!tc) |
1530 | return NULL; | |
22d12cda | 1531 | |
5e77e870 TJ |
1532 | transfer = libusb_alloc_transfer(0); |
1533 | if (!transfer) | |
1534 | { | |
1535 | free(tc); | |
579b006f | 1536 | return NULL; |
5e77e870 | 1537 | } |
22d12cda | 1538 | |
579b006f JZ |
1539 | tc->ftdi = ftdi; |
1540 | tc->completed = 0; | |
1541 | tc->buf = buf; | |
1542 | tc->size = size; | |
1543 | tc->offset = 0; | |
7cc9950e | 1544 | |
579b006f | 1545 | if (size < ftdi->writebuffer_chunksize) |
56ac0383 | 1546 | write_size = size; |
579b006f | 1547 | else |
56ac0383 | 1548 | write_size = ftdi->writebuffer_chunksize; |
22d12cda | 1549 | |
90ef163e YSL |
1550 | libusb_fill_bulk_transfer(transfer, ftdi->usb_dev, ftdi->in_ep, buf, |
1551 | write_size, ftdi_write_data_cb, tc, | |
1552 | ftdi->usb_write_timeout); | |
579b006f | 1553 | transfer->type = LIBUSB_TRANSFER_TYPE_BULK; |
7cc9950e | 1554 | |
579b006f JZ |
1555 | ret = libusb_submit_transfer(transfer); |
1556 | if (ret < 0) | |
1557 | { | |
1558 | libusb_free_transfer(transfer); | |
5e77e870 | 1559 | free(tc); |
579b006f | 1560 | return NULL; |
7cc9950e | 1561 | } |
579b006f JZ |
1562 | tc->transfer = transfer; |
1563 | ||
1564 | return tc; | |
7cc9950e GE |
1565 | } |
1566 | ||
1567 | /** | |
579b006f JZ |
1568 | Reads data from the chip. Does not wait for completion of the transfer |
1569 | nor does it make sure that the transfer was successful. | |
1570 | ||
249888c8 | 1571 | Use libusb 1.0 asynchronous API. |
7cc9950e GE |
1572 | |
1573 | \param ftdi pointer to ftdi_context | |
579b006f JZ |
1574 | \param buf Buffer with the data |
1575 | \param size Size of the buffer | |
4c9e3812 | 1576 | |
579b006f JZ |
1577 | \retval NULL: Some error happens when submit transfer |
1578 | \retval !NULL: Pointer to a ftdi_transfer_control | |
4c9e3812 | 1579 | */ |
579b006f JZ |
1580 | |
1581 | struct ftdi_transfer_control *ftdi_read_data_submit(struct ftdi_context *ftdi, unsigned char *buf, int size) | |
4c9e3812 | 1582 | { |
579b006f JZ |
1583 | struct ftdi_transfer_control *tc; |
1584 | struct libusb_transfer *transfer; | |
1585 | int ret; | |
22d12cda | 1586 | |
22a1b5c1 TJ |
1587 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1588 | return NULL; | |
1589 | ||
579b006f JZ |
1590 | tc = (struct ftdi_transfer_control *) malloc (sizeof (*tc)); |
1591 | if (!tc) | |
1592 | return NULL; | |
1593 | ||
1594 | tc->ftdi = ftdi; | |
1595 | tc->buf = buf; | |
1596 | tc->size = size; | |
1597 | ||
1598 | if (size <= ftdi->readbuffer_remaining) | |
7cc9950e | 1599 | { |
579b006f | 1600 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, size); |
7cc9950e | 1601 | |
579b006f JZ |
1602 | // Fix offsets |
1603 | ftdi->readbuffer_remaining -= size; | |
1604 | ftdi->readbuffer_offset += size; | |
7cc9950e | 1605 | |
579b006f | 1606 | /* printf("Returning bytes from buffer: %d - remaining: %d\n", size, ftdi->readbuffer_remaining); */ |
22d12cda | 1607 | |
579b006f JZ |
1608 | tc->completed = 1; |
1609 | tc->offset = size; | |
1610 | tc->transfer = NULL; | |
1611 | return tc; | |
1612 | } | |
4c9e3812 | 1613 | |
579b006f JZ |
1614 | tc->completed = 0; |
1615 | if (ftdi->readbuffer_remaining != 0) | |
1616 | { | |
1617 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, ftdi->readbuffer_remaining); | |
22d12cda | 1618 | |
579b006f JZ |
1619 | tc->offset = ftdi->readbuffer_remaining; |
1620 | } | |
1621 | else | |
1622 | tc->offset = 0; | |
22d12cda | 1623 | |
579b006f JZ |
1624 | transfer = libusb_alloc_transfer(0); |
1625 | if (!transfer) | |
1626 | { | |
1627 | free (tc); | |
1628 | return NULL; | |
1629 | } | |
22d12cda | 1630 | |
579b006f JZ |
1631 | ftdi->readbuffer_remaining = 0; |
1632 | ftdi->readbuffer_offset = 0; | |
1633 | ||
1634 | libusb_fill_bulk_transfer(transfer, ftdi->usb_dev, ftdi->out_ep, ftdi->readbuffer, ftdi->readbuffer_chunksize, ftdi_read_data_cb, tc, ftdi->usb_read_timeout); | |
1635 | transfer->type = LIBUSB_TRANSFER_TYPE_BULK; | |
1636 | ||
1637 | ret = libusb_submit_transfer(transfer); | |
1638 | if (ret < 0) | |
1639 | { | |
1640 | libusb_free_transfer(transfer); | |
1641 | free (tc); | |
1642 | return NULL; | |
22d12cda | 1643 | } |
579b006f JZ |
1644 | tc->transfer = transfer; |
1645 | ||
1646 | return tc; | |
4c9e3812 GE |
1647 | } |
1648 | ||
1649 | /** | |
579b006f | 1650 | Wait for completion of the transfer. |
4c9e3812 | 1651 | |
249888c8 | 1652 | Use libusb 1.0 asynchronous API. |
4c9e3812 | 1653 | |
579b006f | 1654 | \param tc pointer to ftdi_transfer_control |
4c9e3812 | 1655 | |
579b006f JZ |
1656 | \retval < 0: Some error happens |
1657 | \retval >= 0: Data size transferred | |
4c9e3812 | 1658 | */ |
579b006f JZ |
1659 | |
1660 | int ftdi_transfer_data_done(struct ftdi_transfer_control *tc) | |
4c9e3812 GE |
1661 | { |
1662 | int ret; | |
4c9e3812 | 1663 | |
579b006f | 1664 | while (!tc->completed) |
22d12cda | 1665 | { |
29b1dfd9 | 1666 | ret = libusb_handle_events(tc->ftdi->usb_ctx); |
4c9e3812 | 1667 | if (ret < 0) |
579b006f JZ |
1668 | { |
1669 | if (ret == LIBUSB_ERROR_INTERRUPTED) | |
1670 | continue; | |
1671 | libusb_cancel_transfer(tc->transfer); | |
1672 | while (!tc->completed) | |
29b1dfd9 | 1673 | if (libusb_handle_events(tc->ftdi->usb_ctx) < 0) |
579b006f JZ |
1674 | break; |
1675 | libusb_free_transfer(tc->transfer); | |
1676 | free (tc); | |
579b006f JZ |
1677 | return ret; |
1678 | } | |
4c9e3812 GE |
1679 | } |
1680 | ||
90ef163e YSL |
1681 | ret = tc->offset; |
1682 | /** | |
1683 | * tc->transfer could be NULL if "(size <= ftdi->readbuffer_remaining)" | |
ef15fab5 | 1684 | * at ftdi_read_data_submit(). Therefore, we need to check it here. |
90ef163e | 1685 | **/ |
ef15fab5 TJ |
1686 | if (tc->transfer) |
1687 | { | |
1688 | if (tc->transfer->status != LIBUSB_TRANSFER_COMPLETED) | |
1689 | ret = -1; | |
1690 | libusb_free_transfer(tc->transfer); | |
90ef163e | 1691 | } |
579b006f JZ |
1692 | free(tc); |
1693 | return ret; | |
4c9e3812 | 1694 | } |
579b006f | 1695 | |
1941414d TJ |
1696 | /** |
1697 | Configure write buffer chunk size. | |
1698 | Default is 4096. | |
1699 | ||
1700 | \param ftdi pointer to ftdi_context | |
1701 | \param chunksize Chunk size | |
a3da1d95 | 1702 | |
1941414d | 1703 | \retval 0: all fine |
22a1b5c1 | 1704 | \retval -1: ftdi context invalid |
1941414d | 1705 | */ |
a8f46ddc TJ |
1706 | int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize) |
1707 | { | |
22a1b5c1 TJ |
1708 | if (ftdi == NULL) |
1709 | ftdi_error_return(-1, "ftdi context invalid"); | |
1710 | ||
948f9ada TJ |
1711 | ftdi->writebuffer_chunksize = chunksize; |
1712 | return 0; | |
1713 | } | |
1714 | ||
1941414d TJ |
1715 | /** |
1716 | Get write buffer chunk size. | |
1717 | ||
1718 | \param ftdi pointer to ftdi_context | |
1719 | \param chunksize Pointer to store chunk size in | |
948f9ada | 1720 | |
1941414d | 1721 | \retval 0: all fine |
22a1b5c1 | 1722 | \retval -1: ftdi context invalid |
1941414d | 1723 | */ |
a8f46ddc TJ |
1724 | int ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize) |
1725 | { | |
22a1b5c1 TJ |
1726 | if (ftdi == NULL) |
1727 | ftdi_error_return(-1, "ftdi context invalid"); | |
1728 | ||
948f9ada TJ |
1729 | *chunksize = ftdi->writebuffer_chunksize; |
1730 | return 0; | |
1731 | } | |
cbabb7d3 | 1732 | |
1941414d TJ |
1733 | /** |
1734 | Reads data in chunks (see ftdi_read_data_set_chunksize()) from the chip. | |
1735 | ||
1736 | Automatically strips the two modem status bytes transfered during every read. | |
948f9ada | 1737 | |
1941414d TJ |
1738 | \param ftdi pointer to ftdi_context |
1739 | \param buf Buffer to store data in | |
1740 | \param size Size of the buffer | |
1741 | ||
22a1b5c1 | 1742 | \retval -666: USB device unavailable |
579b006f | 1743 | \retval <0: error code from libusb_bulk_transfer() |
d77b0e94 | 1744 | \retval 0: no data was available |
1941414d TJ |
1745 | \retval >0: number of bytes read |
1746 | ||
1941414d | 1747 | */ |
a8f46ddc TJ |
1748 | int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size) |
1749 | { | |
579b006f | 1750 | int offset = 0, ret, i, num_of_chunks, chunk_remains; |
e2f12a4f | 1751 | int packet_size = ftdi->max_packet_size; |
579b006f | 1752 | int actual_length = 1; |
f2f00cb5 | 1753 | |
22a1b5c1 TJ |
1754 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1755 | ftdi_error_return(-666, "USB device unavailable"); | |
1756 | ||
e2f12a4f TJ |
1757 | // Packet size sanity check (avoid division by zero) |
1758 | if (packet_size == 0) | |
1759 | ftdi_error_return(-1, "max_packet_size is bogus (zero)"); | |
d9f0cce7 | 1760 | |
948f9ada | 1761 | // everything we want is still in the readbuffer? |
22d12cda TJ |
1762 | if (size <= ftdi->readbuffer_remaining) |
1763 | { | |
d9f0cce7 TJ |
1764 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, size); |
1765 | ||
1766 | // Fix offsets | |
1767 | ftdi->readbuffer_remaining -= size; | |
1768 | ftdi->readbuffer_offset += size; | |
1769 | ||
545820ce | 1770 | /* printf("Returning bytes from buffer: %d - remaining: %d\n", size, ftdi->readbuffer_remaining); */ |
d9f0cce7 TJ |
1771 | |
1772 | return size; | |
979a145c | 1773 | } |
948f9ada | 1774 | // something still in the readbuffer, but not enough to satisfy 'size'? |
22d12cda TJ |
1775 | if (ftdi->readbuffer_remaining != 0) |
1776 | { | |
d9f0cce7 | 1777 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, ftdi->readbuffer_remaining); |
979a145c | 1778 | |
d9f0cce7 TJ |
1779 | // Fix offset |
1780 | offset += ftdi->readbuffer_remaining; | |
948f9ada | 1781 | } |
948f9ada | 1782 | // do the actual USB read |
579b006f | 1783 | while (offset < size && actual_length > 0) |
22d12cda | 1784 | { |
d9f0cce7 TJ |
1785 | ftdi->readbuffer_remaining = 0; |
1786 | ftdi->readbuffer_offset = 0; | |
98452d97 | 1787 | /* returns how much received */ |
579b006f | 1788 | ret = libusb_bulk_transfer (ftdi->usb_dev, ftdi->out_ep, ftdi->readbuffer, ftdi->readbuffer_chunksize, &actual_length, ftdi->usb_read_timeout); |
c3d95b87 TJ |
1789 | if (ret < 0) |
1790 | ftdi_error_return(ret, "usb bulk read failed"); | |
98452d97 | 1791 | |
579b006f | 1792 | if (actual_length > 2) |
22d12cda | 1793 | { |
d9f0cce7 TJ |
1794 | // skip FTDI status bytes. |
1795 | // Maybe stored in the future to enable modem use | |
579b006f JZ |
1796 | num_of_chunks = actual_length / packet_size; |
1797 | chunk_remains = actual_length % packet_size; | |
1798 | //printf("actual_length = %X, num_of_chunks = %X, chunk_remains = %X, readbuffer_offset = %X\n", actual_length, num_of_chunks, chunk_remains, ftdi->readbuffer_offset); | |
1c733d33 | 1799 | |
d9f0cce7 | 1800 | ftdi->readbuffer_offset += 2; |
579b006f | 1801 | actual_length -= 2; |
1c733d33 | 1802 | |
579b006f | 1803 | if (actual_length > packet_size - 2) |
22d12cda | 1804 | { |
1c733d33 | 1805 | for (i = 1; i < num_of_chunks; i++) |
f2f00cb5 DC |
1806 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, |
1807 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1808 | packet_size - 2); | |
22d12cda TJ |
1809 | if (chunk_remains > 2) |
1810 | { | |
f2f00cb5 DC |
1811 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, |
1812 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1c733d33 | 1813 | chunk_remains-2); |
579b006f | 1814 | actual_length -= 2*num_of_chunks; |
22d12cda TJ |
1815 | } |
1816 | else | |
579b006f | 1817 | actual_length -= 2*(num_of_chunks-1)+chunk_remains; |
1c733d33 | 1818 | } |
22d12cda | 1819 | } |
579b006f | 1820 | else if (actual_length <= 2) |
22d12cda | 1821 | { |
d9f0cce7 TJ |
1822 | // no more data to read? |
1823 | return offset; | |
1824 | } | |
579b006f | 1825 | if (actual_length > 0) |
22d12cda | 1826 | { |
d9f0cce7 | 1827 | // data still fits in buf? |
579b006f | 1828 | if (offset+actual_length <= size) |
22d12cda | 1829 | { |
579b006f | 1830 | memcpy (buf+offset, ftdi->readbuffer+ftdi->readbuffer_offset, actual_length); |
545820ce | 1831 | //printf("buf[0] = %X, buf[1] = %X\n", buf[0], buf[1]); |
579b006f | 1832 | offset += actual_length; |
d9f0cce7 | 1833 | |
53ad271d | 1834 | /* Did we read exactly the right amount of bytes? */ |
d9f0cce7 | 1835 | if (offset == size) |
c4446c36 TJ |
1836 | //printf("read_data exact rem %d offset %d\n", |
1837 | //ftdi->readbuffer_remaining, offset); | |
d9f0cce7 | 1838 | return offset; |
22d12cda TJ |
1839 | } |
1840 | else | |
1841 | { | |
d9f0cce7 TJ |
1842 | // only copy part of the data or size <= readbuffer_chunksize |
1843 | int part_size = size-offset; | |
1844 | memcpy (buf+offset, ftdi->readbuffer+ftdi->readbuffer_offset, part_size); | |
98452d97 | 1845 | |
d9f0cce7 | 1846 | ftdi->readbuffer_offset += part_size; |
579b006f | 1847 | ftdi->readbuffer_remaining = actual_length-part_size; |
d9f0cce7 TJ |
1848 | offset += part_size; |
1849 | ||
579b006f JZ |
1850 | /* printf("Returning part: %d - size: %d - offset: %d - actual_length: %d - remaining: %d\n", |
1851 | part_size, size, offset, actual_length, ftdi->readbuffer_remaining); */ | |
d9f0cce7 TJ |
1852 | |
1853 | return offset; | |
1854 | } | |
1855 | } | |
cbabb7d3 | 1856 | } |
948f9ada | 1857 | // never reached |
29c4af7f | 1858 | return -127; |
a3da1d95 GE |
1859 | } |
1860 | ||
1941414d TJ |
1861 | /** |
1862 | Configure read buffer chunk size. | |
1863 | Default is 4096. | |
1864 | ||
1865 | Automatically reallocates the buffer. | |
a3da1d95 | 1866 | |
1941414d TJ |
1867 | \param ftdi pointer to ftdi_context |
1868 | \param chunksize Chunk size | |
1869 | ||
1870 | \retval 0: all fine | |
22a1b5c1 | 1871 | \retval -1: ftdi context invalid |
1941414d | 1872 | */ |
a8f46ddc TJ |
1873 | int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize) |
1874 | { | |
29c4af7f TJ |
1875 | unsigned char *new_buf; |
1876 | ||
22a1b5c1 TJ |
1877 | if (ftdi == NULL) |
1878 | ftdi_error_return(-1, "ftdi context invalid"); | |
1879 | ||
948f9ada TJ |
1880 | // Invalidate all remaining data |
1881 | ftdi->readbuffer_offset = 0; | |
1882 | ftdi->readbuffer_remaining = 0; | |
8de6eea4 JZ |
1883 | #ifdef __linux__ |
1884 | /* We can't set readbuffer_chunksize larger than MAX_BULK_BUFFER_LENGTH, | |
1885 | which is defined in libusb-1.0. Otherwise, each USB read request will | |
2e685a1f | 1886 | be divided into multiple URBs. This will cause issues on Linux kernel |
8de6eea4 JZ |
1887 | older than 2.6.32. */ |
1888 | if (chunksize > 16384) | |
1889 | chunksize = 16384; | |
1890 | #endif | |
948f9ada | 1891 | |
c3d95b87 TJ |
1892 | if ((new_buf = (unsigned char *)realloc(ftdi->readbuffer, chunksize)) == NULL) |
1893 | ftdi_error_return(-1, "out of memory for readbuffer"); | |
d9f0cce7 | 1894 | |
948f9ada TJ |
1895 | ftdi->readbuffer = new_buf; |
1896 | ftdi->readbuffer_chunksize = chunksize; | |
1897 | ||
1898 | return 0; | |
1899 | } | |
1900 | ||
1941414d TJ |
1901 | /** |
1902 | Get read buffer chunk size. | |
948f9ada | 1903 | |
1941414d TJ |
1904 | \param ftdi pointer to ftdi_context |
1905 | \param chunksize Pointer to store chunk size in | |
1906 | ||
1907 | \retval 0: all fine | |
22a1b5c1 | 1908 | \retval -1: FTDI context invalid |
1941414d | 1909 | */ |
a8f46ddc TJ |
1910 | int ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize) |
1911 | { | |
22a1b5c1 TJ |
1912 | if (ftdi == NULL) |
1913 | ftdi_error_return(-1, "FTDI context invalid"); | |
1914 | ||
948f9ada TJ |
1915 | *chunksize = ftdi->readbuffer_chunksize; |
1916 | return 0; | |
1917 | } | |
1918 | ||
1941414d | 1919 | /** |
2d790e37 | 1920 | Enable/disable bitbang modes. |
1941414d TJ |
1921 | |
1922 | \param ftdi pointer to ftdi_context | |
1923 | \param bitmask Bitmask to configure lines. | |
1924 | HIGH/ON value configures a line as output. | |
2d790e37 | 1925 | \param mode Bitbang mode: use the values defined in \ref ftdi_mpsse_mode |
1941414d TJ |
1926 | |
1927 | \retval 0: all fine | |
1928 | \retval -1: can't enable bitbang mode | |
22a1b5c1 | 1929 | \retval -2: USB device unavailable |
1941414d | 1930 | */ |
2d790e37 | 1931 | int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode) |
a8f46ddc | 1932 | { |
a3da1d95 GE |
1933 | unsigned short usb_val; |
1934 | ||
22a1b5c1 TJ |
1935 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1936 | ftdi_error_return(-2, "USB device unavailable"); | |
1937 | ||
d9f0cce7 | 1938 | usb_val = bitmask; // low byte: bitmask |
2d790e37 TJ |
1939 | usb_val |= (mode << 8); |
1940 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_SET_BITMODE_REQUEST, usb_val, ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
1941 | ftdi_error_return(-1, "unable to configure bitbang mode. Perhaps not a BM/2232C type chip?"); | |
c3d95b87 | 1942 | |
2d790e37 TJ |
1943 | ftdi->bitbang_mode = mode; |
1944 | ftdi->bitbang_enabled = (mode == BITMODE_RESET) ? 0 : 1; | |
a3da1d95 GE |
1945 | return 0; |
1946 | } | |
1947 | ||
1941414d TJ |
1948 | /** |
1949 | Disable bitbang mode. | |
a3da1d95 | 1950 | |
1941414d TJ |
1951 | \param ftdi pointer to ftdi_context |
1952 | ||
1953 | \retval 0: all fine | |
1954 | \retval -1: can't disable bitbang mode | |
22a1b5c1 | 1955 | \retval -2: USB device unavailable |
1941414d | 1956 | */ |
a8f46ddc TJ |
1957 | int ftdi_disable_bitbang(struct ftdi_context *ftdi) |
1958 | { | |
22a1b5c1 TJ |
1959 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1960 | ftdi_error_return(-2, "USB device unavailable"); | |
1961 | ||
579b006f | 1962 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_SET_BITMODE_REQUEST, 0, ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) |
c3d95b87 | 1963 | ftdi_error_return(-1, "unable to leave bitbang mode. Perhaps not a BM type chip?"); |
a3da1d95 GE |
1964 | |
1965 | ftdi->bitbang_enabled = 0; | |
1966 | return 0; | |
1967 | } | |
1968 | ||
c4446c36 | 1969 | |
1941414d | 1970 | /** |
418aaa72 | 1971 | Directly read pin state, circumventing the read buffer. Useful for bitbang mode. |
1941414d TJ |
1972 | |
1973 | \param ftdi pointer to ftdi_context | |
1974 | \param pins Pointer to store pins into | |
1975 | ||
1976 | \retval 0: all fine | |
1977 | \retval -1: read pins failed | |
22a1b5c1 | 1978 | \retval -2: USB device unavailable |
1941414d | 1979 | */ |
a8f46ddc TJ |
1980 | int ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins) |
1981 | { | |
22a1b5c1 TJ |
1982 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1983 | ftdi_error_return(-2, "USB device unavailable"); | |
1984 | ||
579b006f | 1985 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_PINS_REQUEST, 0, ftdi->index, (unsigned char *)pins, 1, ftdi->usb_read_timeout) != 1) |
c3d95b87 | 1986 | ftdi_error_return(-1, "read pins failed"); |
a3da1d95 | 1987 | |
a3da1d95 GE |
1988 | return 0; |
1989 | } | |
1990 | ||
1941414d TJ |
1991 | /** |
1992 | Set latency timer | |
1993 | ||
1994 | The FTDI chip keeps data in the internal buffer for a specific | |
1995 | amount of time if the buffer is not full yet to decrease | |
1996 | load on the usb bus. | |
a3da1d95 | 1997 | |
1941414d TJ |
1998 | \param ftdi pointer to ftdi_context |
1999 | \param latency Value between 1 and 255 | |
2000 | ||
2001 | \retval 0: all fine | |
2002 | \retval -1: latency out of range | |
2003 | \retval -2: unable to set latency timer | |
22a1b5c1 | 2004 | \retval -3: USB device unavailable |
1941414d | 2005 | */ |
a8f46ddc TJ |
2006 | int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency) |
2007 | { | |
a3da1d95 GE |
2008 | unsigned short usb_val; |
2009 | ||
c3d95b87 TJ |
2010 | if (latency < 1) |
2011 | ftdi_error_return(-1, "latency out of range. Only valid for 1-255"); | |
a3da1d95 | 2012 | |
22a1b5c1 TJ |
2013 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2014 | ftdi_error_return(-3, "USB device unavailable"); | |
2015 | ||
d79d2e68 | 2016 | usb_val = latency; |
579b006f | 2017 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_SET_LATENCY_TIMER_REQUEST, usb_val, ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) |
c3d95b87 TJ |
2018 | ftdi_error_return(-2, "unable to set latency timer"); |
2019 | ||
a3da1d95 GE |
2020 | return 0; |
2021 | } | |
2022 | ||
1941414d TJ |
2023 | /** |
2024 | Get latency timer | |
a3da1d95 | 2025 | |
1941414d TJ |
2026 | \param ftdi pointer to ftdi_context |
2027 | \param latency Pointer to store latency value in | |
2028 | ||
2029 | \retval 0: all fine | |
2030 | \retval -1: unable to get latency timer | |
22a1b5c1 | 2031 | \retval -2: USB device unavailable |
1941414d | 2032 | */ |
a8f46ddc TJ |
2033 | int ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency) |
2034 | { | |
a3da1d95 | 2035 | unsigned short usb_val; |
22a1b5c1 TJ |
2036 | |
2037 | if (ftdi == NULL || ftdi->usb_dev == NULL) | |
2038 | ftdi_error_return(-2, "USB device unavailable"); | |
2039 | ||
579b006f | 2040 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_GET_LATENCY_TIMER_REQUEST, 0, ftdi->index, (unsigned char *)&usb_val, 1, ftdi->usb_read_timeout) != 1) |
c3d95b87 | 2041 | ftdi_error_return(-1, "reading latency timer failed"); |
a3da1d95 GE |
2042 | |
2043 | *latency = (unsigned char)usb_val; | |
2044 | return 0; | |
2045 | } | |
2046 | ||
1941414d | 2047 | /** |
1189b11a TJ |
2048 | Poll modem status information |
2049 | ||
2050 | This function allows the retrieve the two status bytes of the device. | |
2051 | The device sends these bytes also as a header for each read access | |
2052 | where they are discarded by ftdi_read_data(). The chip generates | |
2053 | the two stripped status bytes in the absence of data every 40 ms. | |
2054 | ||
2055 | Layout of the first byte: | |
2056 | - B0..B3 - must be 0 | |
2057 | - B4 Clear to send (CTS) | |
2058 | 0 = inactive | |
2059 | 1 = active | |
2060 | - B5 Data set ready (DTS) | |
2061 | 0 = inactive | |
2062 | 1 = active | |
2063 | - B6 Ring indicator (RI) | |
2064 | 0 = inactive | |
2065 | 1 = active | |
2066 | - B7 Receive line signal detect (RLSD) | |
2067 | 0 = inactive | |
2068 | 1 = active | |
2069 | ||
2070 | Layout of the second byte: | |
2071 | - B0 Data ready (DR) | |
2072 | - B1 Overrun error (OE) | |
2073 | - B2 Parity error (PE) | |
2074 | - B3 Framing error (FE) | |
2075 | - B4 Break interrupt (BI) | |
2076 | - B5 Transmitter holding register (THRE) | |
2077 | - B6 Transmitter empty (TEMT) | |
2078 | - B7 Error in RCVR FIFO | |
2079 | ||
2080 | \param ftdi pointer to ftdi_context | |
2081 | \param status Pointer to store status information in. Must be two bytes. | |
2082 | ||
2083 | \retval 0: all fine | |
2084 | \retval -1: unable to retrieve status information | |
22a1b5c1 | 2085 | \retval -2: USB device unavailable |
1189b11a TJ |
2086 | */ |
2087 | int ftdi_poll_modem_status(struct ftdi_context *ftdi, unsigned short *status) | |
2088 | { | |
2089 | char usb_val[2]; | |
2090 | ||
22a1b5c1 TJ |
2091 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2092 | ftdi_error_return(-2, "USB device unavailable"); | |
2093 | ||
579b006f | 2094 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_POLL_MODEM_STATUS_REQUEST, 0, ftdi->index, (unsigned char *)usb_val, 2, ftdi->usb_read_timeout) != 2) |
1189b11a TJ |
2095 | ftdi_error_return(-1, "getting modem status failed"); |
2096 | ||
dc09eaa8 | 2097 | *status = (usb_val[1] << 8) | (usb_val[0] & 0xFF); |
1189b11a TJ |
2098 | |
2099 | return 0; | |
2100 | } | |
2101 | ||
a7fb8440 TJ |
2102 | /** |
2103 | Set flowcontrol for ftdi chip | |
2104 | ||
2105 | \param ftdi pointer to ftdi_context | |
22d12cda TJ |
2106 | \param flowctrl flow control to use. should be |
2107 | SIO_DISABLE_FLOW_CTRL, SIO_RTS_CTS_HS, SIO_DTR_DSR_HS or SIO_XON_XOFF_HS | |
a7fb8440 TJ |
2108 | |
2109 | \retval 0: all fine | |
2110 | \retval -1: set flow control failed | |
22a1b5c1 | 2111 | \retval -2: USB device unavailable |
a7fb8440 TJ |
2112 | */ |
2113 | int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl) | |
2114 | { | |
22a1b5c1 TJ |
2115 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2116 | ftdi_error_return(-2, "USB device unavailable"); | |
2117 | ||
579b006f JZ |
2118 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2119 | SIO_SET_FLOW_CTRL_REQUEST, 0, (flowctrl | ftdi->index), | |
2120 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
a7fb8440 TJ |
2121 | ftdi_error_return(-1, "set flow control failed"); |
2122 | ||
2123 | return 0; | |
2124 | } | |
2125 | ||
2126 | /** | |
2127 | Set dtr line | |
2128 | ||
2129 | \param ftdi pointer to ftdi_context | |
2130 | \param state state to set line to (1 or 0) | |
2131 | ||
2132 | \retval 0: all fine | |
2133 | \retval -1: set dtr failed | |
22a1b5c1 | 2134 | \retval -2: USB device unavailable |
a7fb8440 TJ |
2135 | */ |
2136 | int ftdi_setdtr(struct ftdi_context *ftdi, int state) | |
2137 | { | |
2138 | unsigned short usb_val; | |
2139 | ||
22a1b5c1 TJ |
2140 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2141 | ftdi_error_return(-2, "USB device unavailable"); | |
2142 | ||
a7fb8440 TJ |
2143 | if (state) |
2144 | usb_val = SIO_SET_DTR_HIGH; | |
2145 | else | |
2146 | usb_val = SIO_SET_DTR_LOW; | |
2147 | ||
579b006f JZ |
2148 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2149 | SIO_SET_MODEM_CTRL_REQUEST, usb_val, ftdi->index, | |
2150 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
a7fb8440 TJ |
2151 | ftdi_error_return(-1, "set dtr failed"); |
2152 | ||
2153 | return 0; | |
2154 | } | |
2155 | ||
2156 | /** | |
2157 | Set rts line | |
2158 | ||
2159 | \param ftdi pointer to ftdi_context | |
2160 | \param state state to set line to (1 or 0) | |
2161 | ||
2162 | \retval 0: all fine | |
22a1b5c1 TJ |
2163 | \retval -1: set rts failed |
2164 | \retval -2: USB device unavailable | |
a7fb8440 TJ |
2165 | */ |
2166 | int ftdi_setrts(struct ftdi_context *ftdi, int state) | |
2167 | { | |
2168 | unsigned short usb_val; | |
2169 | ||
22a1b5c1 TJ |
2170 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2171 | ftdi_error_return(-2, "USB device unavailable"); | |
2172 | ||
a7fb8440 TJ |
2173 | if (state) |
2174 | usb_val = SIO_SET_RTS_HIGH; | |
2175 | else | |
2176 | usb_val = SIO_SET_RTS_LOW; | |
2177 | ||
579b006f JZ |
2178 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2179 | SIO_SET_MODEM_CTRL_REQUEST, usb_val, ftdi->index, | |
2180 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
a7fb8440 TJ |
2181 | ftdi_error_return(-1, "set of rts failed"); |
2182 | ||
2183 | return 0; | |
2184 | } | |
2185 | ||
1189b11a | 2186 | /** |
22a1b5c1 | 2187 | Set dtr and rts line in one pass |
9ecfef2a | 2188 | |
22a1b5c1 TJ |
2189 | \param ftdi pointer to ftdi_context |
2190 | \param dtr DTR state to set line to (1 or 0) | |
2191 | \param rts RTS state to set line to (1 or 0) | |
9ecfef2a | 2192 | |
22a1b5c1 TJ |
2193 | \retval 0: all fine |
2194 | \retval -1: set dtr/rts failed | |
2195 | \retval -2: USB device unavailable | |
9ecfef2a TJ |
2196 | */ |
2197 | int ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts) | |
2198 | { | |
2199 | unsigned short usb_val; | |
2200 | ||
22a1b5c1 TJ |
2201 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2202 | ftdi_error_return(-2, "USB device unavailable"); | |
2203 | ||
9ecfef2a | 2204 | if (dtr) |
22d12cda | 2205 | usb_val = SIO_SET_DTR_HIGH; |
9ecfef2a | 2206 | else |
22d12cda | 2207 | usb_val = SIO_SET_DTR_LOW; |
9ecfef2a TJ |
2208 | |
2209 | if (rts) | |
22d12cda | 2210 | usb_val |= SIO_SET_RTS_HIGH; |
9ecfef2a | 2211 | else |
22d12cda | 2212 | usb_val |= SIO_SET_RTS_LOW; |
9ecfef2a | 2213 | |
579b006f JZ |
2214 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2215 | SIO_SET_MODEM_CTRL_REQUEST, usb_val, ftdi->index, | |
2216 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
22d12cda | 2217 | ftdi_error_return(-1, "set of rts/dtr failed"); |
9ecfef2a TJ |
2218 | |
2219 | return 0; | |
2220 | } | |
2221 | ||
2222 | /** | |
1189b11a TJ |
2223 | Set the special event character |
2224 | ||
2225 | \param ftdi pointer to ftdi_context | |
2226 | \param eventch Event character | |
2227 | \param enable 0 to disable the event character, non-zero otherwise | |
2228 | ||
2229 | \retval 0: all fine | |
2230 | \retval -1: unable to set event character | |
22a1b5c1 | 2231 | \retval -2: USB device unavailable |
1189b11a TJ |
2232 | */ |
2233 | int ftdi_set_event_char(struct ftdi_context *ftdi, | |
22d12cda | 2234 | unsigned char eventch, unsigned char enable) |
1189b11a TJ |
2235 | { |
2236 | unsigned short usb_val; | |
2237 | ||
22a1b5c1 TJ |
2238 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2239 | ftdi_error_return(-2, "USB device unavailable"); | |
2240 | ||
1189b11a TJ |
2241 | usb_val = eventch; |
2242 | if (enable) | |
2243 | usb_val |= 1 << 8; | |
2244 | ||
579b006f | 2245 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_SET_EVENT_CHAR_REQUEST, usb_val, ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) |
1189b11a TJ |
2246 | ftdi_error_return(-1, "setting event character failed"); |
2247 | ||
2248 | return 0; | |
2249 | } | |
2250 | ||
2251 | /** | |
2252 | Set error character | |
2253 | ||
2254 | \param ftdi pointer to ftdi_context | |
2255 | \param errorch Error character | |
2256 | \param enable 0 to disable the error character, non-zero otherwise | |
2257 | ||
2258 | \retval 0: all fine | |
2259 | \retval -1: unable to set error character | |
22a1b5c1 | 2260 | \retval -2: USB device unavailable |
1189b11a TJ |
2261 | */ |
2262 | int ftdi_set_error_char(struct ftdi_context *ftdi, | |
22d12cda | 2263 | unsigned char errorch, unsigned char enable) |
1189b11a TJ |
2264 | { |
2265 | unsigned short usb_val; | |
2266 | ||
22a1b5c1 TJ |
2267 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2268 | ftdi_error_return(-2, "USB device unavailable"); | |
2269 | ||
1189b11a TJ |
2270 | usb_val = errorch; |
2271 | if (enable) | |
2272 | usb_val |= 1 << 8; | |
2273 | ||
579b006f | 2274 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_SET_ERROR_CHAR_REQUEST, usb_val, ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) |
1189b11a TJ |
2275 | ftdi_error_return(-1, "setting error character failed"); |
2276 | ||
2277 | return 0; | |
2278 | } | |
2279 | ||
2280 | /** | |
44f41f11 | 2281 | Init eeprom with default values for the connected device |
a35aa9bd | 2282 | \param ftdi pointer to ftdi_context |
f14f84d3 UB |
2283 | \param manufacturer String to use as Manufacturer |
2284 | \param product String to use as Product description | |
2285 | \param serial String to use as Serial number description | |
4e74064b | 2286 | |
f14f84d3 UB |
2287 | \retval 0: all fine |
2288 | \retval -1: No struct ftdi_context | |
2289 | \retval -2: No struct ftdi_eeprom | |
44f41f11 | 2290 | \retval -3: No connected device or device not yet opened |
1941414d | 2291 | */ |
f14f84d3 | 2292 | int ftdi_eeprom_initdefaults(struct ftdi_context *ftdi, char * manufacturer, |
56ac0383 | 2293 | char * product, char * serial) |
a8f46ddc | 2294 | { |
c0a96aed | 2295 | struct ftdi_eeprom *eeprom; |
f505134f | 2296 | |
c0a96aed | 2297 | if (ftdi == NULL) |
f14f84d3 | 2298 | ftdi_error_return(-1, "No struct ftdi_context"); |
c0a96aed UB |
2299 | |
2300 | if (ftdi->eeprom == NULL) | |
56ac0383 | 2301 | ftdi_error_return(-2,"No struct ftdi_eeprom"); |
22a1b5c1 | 2302 | |
c0a96aed | 2303 | eeprom = ftdi->eeprom; |
a02587d5 | 2304 | memset(eeprom, 0, sizeof(struct ftdi_eeprom)); |
c0a96aed | 2305 | |
44f41f11 UB |
2306 | if (ftdi->usb_dev == NULL) |
2307 | ftdi_error_return(-3, "No connected device or device not yet opened"); | |
2308 | ||
f396dbad | 2309 | eeprom->vendor_id = 0x0403; |
d4b5af27 | 2310 | eeprom->use_serial = 1; |
56ac0383 TJ |
2311 | if ((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM) || |
2312 | (ftdi->type == TYPE_R)) | |
a02587d5 | 2313 | eeprom->product_id = 0x6001; |
c7e4c09e UB |
2314 | else if (ftdi->type == TYPE_4232H) |
2315 | eeprom->product_id = 0x6011; | |
2316 | else if (ftdi->type == TYPE_232H) | |
2317 | eeprom->product_id = 0x6014; | |
a02587d5 UB |
2318 | else |
2319 | eeprom->product_id = 0x6010; | |
b1859923 UB |
2320 | if (ftdi->type == TYPE_AM) |
2321 | eeprom->usb_version = 0x0101; | |
2322 | else | |
2323 | eeprom->usb_version = 0x0200; | |
a886436a | 2324 | eeprom->max_power = 100; |
d9f0cce7 | 2325 | |
74e8e79d UB |
2326 | if (eeprom->manufacturer) |
2327 | free (eeprom->manufacturer); | |
b8aa7b35 | 2328 | eeprom->manufacturer = NULL; |
74e8e79d UB |
2329 | if (manufacturer) |
2330 | { | |
2331 | eeprom->manufacturer = malloc(strlen(manufacturer)+1); | |
2332 | if (eeprom->manufacturer) | |
2333 | strcpy(eeprom->manufacturer, manufacturer); | |
2334 | } | |
2335 | ||
2336 | if (eeprom->product) | |
2337 | free (eeprom->product); | |
b8aa7b35 | 2338 | eeprom->product = NULL; |
10771971 | 2339 | if(product) |
74e8e79d UB |
2340 | { |
2341 | eeprom->product = malloc(strlen(product)+1); | |
2342 | if (eeprom->product) | |
2343 | strcpy(eeprom->product, product); | |
2344 | } | |
6a6fcd89 UB |
2345 | else |
2346 | { | |
2347 | const char* default_product; | |
2348 | switch(ftdi->type) | |
2349 | { | |
2350 | case TYPE_AM: default_product = "AM"; break; | |
2351 | case TYPE_BM: default_product = "BM"; break; | |
2352 | case TYPE_2232C: default_product = "Dual RS232"; break; | |
2353 | case TYPE_R: default_product = "FT232R USB UART"; break; | |
2354 | case TYPE_2232H: default_product = "Dual RS232-HS"; break; | |
2355 | case TYPE_4232H: default_product = "FT4232H"; break; | |
2356 | case TYPE_232H: default_product = "Single-RS232-HS"; break; | |
2357 | default: | |
2358 | ftdi_error_return(-3, "Unknown chip type"); | |
2359 | } | |
2360 | eeprom->product = malloc(strlen(default_product) +1); | |
2361 | if (eeprom->product) | |
2362 | strcpy(eeprom->product, default_product); | |
2363 | } | |
74e8e79d UB |
2364 | |
2365 | if (eeprom->serial) | |
2366 | free (eeprom->serial); | |
b8aa7b35 | 2367 | eeprom->serial = NULL; |
74e8e79d UB |
2368 | if (serial) |
2369 | { | |
2370 | eeprom->serial = malloc(strlen(serial)+1); | |
2371 | if (eeprom->serial) | |
2372 | strcpy(eeprom->serial, serial); | |
2373 | } | |
2374 | ||
56ac0383 | 2375 | if (ftdi->type == TYPE_R) |
a4980043 | 2376 | { |
a886436a | 2377 | eeprom->max_power = 90; |
a02587d5 | 2378 | eeprom->size = 0x80; |
a4980043 UB |
2379 | eeprom->cbus_function[0] = CBUS_TXLED; |
2380 | eeprom->cbus_function[1] = CBUS_RXLED; | |
2381 | eeprom->cbus_function[2] = CBUS_TXDEN; | |
2382 | eeprom->cbus_function[3] = CBUS_PWREN; | |
2383 | eeprom->cbus_function[4] = CBUS_SLEEP; | |
2384 | } | |
a02587d5 | 2385 | else |
263d3ba0 UB |
2386 | { |
2387 | if(ftdi->type == TYPE_232H) | |
2388 | { | |
2389 | int i; | |
2390 | for (i=0; i<10; i++) | |
2391 | eeprom->cbus_function[i] = CBUSH_TRISTATE; | |
2392 | } | |
a02587d5 | 2393 | eeprom->size = -1; |
263d3ba0 | 2394 | } |
44f41f11 | 2395 | eeprom->initialized_for_connected_device = 1; |
f14f84d3 | 2396 | return 0; |
b8aa7b35 | 2397 | } |
263d3ba0 UB |
2398 | /*FTD2XX doesn't check for values not fitting in the ACBUS Signal oprtions*/ |
2399 | void set_ft232h_cbus(struct ftdi_eeprom *eeprom, unsigned char * output) | |
2400 | { | |
2401 | int i; | |
2402 | for(i=0; i<5;i++) | |
2403 | { | |
2404 | int mode_low, mode_high; | |
2405 | if (eeprom->cbus_function[2*i]> CBUSH_CLK7_5) | |
2406 | mode_low = CBUSH_TRISTATE; | |
2407 | else | |
2408 | mode_low = eeprom->cbus_function[2*i]; | |
2409 | if (eeprom->cbus_function[2*i+1]> CBUSH_CLK7_5) | |
2410 | mode_high = CBUSH_TRISTATE; | |
2411 | else | |
f37a1524 | 2412 | mode_high = eeprom->cbus_function[2*i+1]; |
b8aa7b35 | 2413 | |
f37a1524 | 2414 | output[0x18+i] = (mode_high <<4) | mode_low; |
263d3ba0 UB |
2415 | } |
2416 | } | |
c8f69686 UB |
2417 | /* Return the bits for the encoded EEPROM Structure of a requested Mode |
2418 | * | |
2419 | */ | |
2420 | static unsigned char type2bit(unsigned char type, enum ftdi_chip_type chip) | |
2421 | { | |
2422 | switch (chip) | |
2423 | { | |
2424 | case TYPE_2232H: | |
2425 | case TYPE_2232C: | |
2426 | { | |
2427 | switch (type) | |
2428 | { | |
2429 | case CHANNEL_IS_UART: return 0; | |
2430 | case CHANNEL_IS_FIFO: return 0x01; | |
2431 | case CHANNEL_IS_OPTO: return 0x02; | |
2432 | case CHANNEL_IS_CPU : return 0x04; | |
2433 | default: return 0; | |
2434 | } | |
2435 | } | |
2436 | case TYPE_232H: | |
2437 | { | |
2438 | switch (type) | |
2439 | { | |
2440 | case CHANNEL_IS_UART : return 0; | |
2441 | case CHANNEL_IS_FIFO : return 0x01; | |
2442 | case CHANNEL_IS_OPTO : return 0x02; | |
2443 | case CHANNEL_IS_CPU : return 0x04; | |
2444 | case CHANNEL_IS_FT1284 : return 0x08; | |
2445 | default: return 0; | |
2446 | } | |
2447 | } | |
2448 | default: return 0; | |
2449 | } | |
2450 | return 0; | |
2451 | } | |
2452 | ||
1941414d | 2453 | /** |
a35aa9bd | 2454 | Build binary buffer from ftdi_eeprom structure. |
22a1b5c1 | 2455 | Output is suitable for ftdi_write_eeprom(). |
b8aa7b35 | 2456 | |
a35aa9bd | 2457 | \param ftdi pointer to ftdi_context |
1941414d | 2458 | |
516ebfb1 | 2459 | \retval >=0: size of eeprom user area in bytes |
22a1b5c1 | 2460 | \retval -1: eeprom size (128 bytes) exceeded by custom strings |
2c1e2bde TJ |
2461 | \retval -2: Invalid eeprom or ftdi pointer |
2462 | \retval -3: Invalid cbus function setting (FIXME: Not in the code?) | |
2463 | \retval -4: Chip doesn't support invert (FIXME: Not in the code?) | |
2464 | \retval -5: Chip doesn't support high current drive (FIXME: Not in the code?) | |
2b9a3c82 | 2465 | \retval -6: No connected EEPROM or EEPROM Type unknown |
b8aa7b35 | 2466 | */ |
a35aa9bd | 2467 | int ftdi_eeprom_build(struct ftdi_context *ftdi) |
a8f46ddc | 2468 | { |
e2bbd9af | 2469 | unsigned char i, j, eeprom_size_mask; |
b8aa7b35 TJ |
2470 | unsigned short checksum, value; |
2471 | unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0; | |
516ebfb1 | 2472 | int user_area_size; |
c0a96aed | 2473 | struct ftdi_eeprom *eeprom; |
a35aa9bd | 2474 | unsigned char * output; |
b8aa7b35 | 2475 | |
c0a96aed | 2476 | if (ftdi == NULL) |
cc9c9d58 | 2477 | ftdi_error_return(-2,"No context"); |
c0a96aed | 2478 | if (ftdi->eeprom == NULL) |
cc9c9d58 | 2479 | ftdi_error_return(-2,"No eeprom structure"); |
c0a96aed UB |
2480 | |
2481 | eeprom= ftdi->eeprom; | |
a35aa9bd | 2482 | output = eeprom->buf; |
22a1b5c1 | 2483 | |
56ac0383 | 2484 | if (eeprom->chip == -1) |
2c1e2bde | 2485 | ftdi_error_return(-6,"No connected EEPROM or EEPROM type unknown"); |
2b9a3c82 | 2486 | |
f75bf139 UB |
2487 | if ((eeprom->chip == 0x56) || (eeprom->chip == 0x66)) |
2488 | eeprom->size = 0x100; | |
2489 | else | |
2490 | eeprom->size = 0x80; | |
2491 | ||
b8aa7b35 | 2492 | if (eeprom->manufacturer != NULL) |
d9f0cce7 | 2493 | manufacturer_size = strlen(eeprom->manufacturer); |
b8aa7b35 | 2494 | if (eeprom->product != NULL) |
d9f0cce7 | 2495 | product_size = strlen(eeprom->product); |
b8aa7b35 | 2496 | if (eeprom->serial != NULL) |
d9f0cce7 | 2497 | serial_size = strlen(eeprom->serial); |
b8aa7b35 | 2498 | |
814710ba TJ |
2499 | // eeprom size check |
2500 | switch (ftdi->type) | |
2501 | { | |
2502 | case TYPE_AM: | |
2503 | case TYPE_BM: | |
2504 | user_area_size = 96; // base size for strings (total of 48 characters) | |
2505 | break; | |
2506 | case TYPE_2232C: | |
56ac0383 TJ |
2507 | user_area_size = 90; // two extra config bytes and 4 bytes PnP stuff |
2508 | break; | |
814710ba | 2509 | case TYPE_R: |
56ac0383 TJ |
2510 | user_area_size = 88; // four extra config bytes + 4 bytes PnP stuff |
2511 | break; | |
814710ba TJ |
2512 | case TYPE_2232H: // six extra config bytes + 4 bytes PnP stuff |
2513 | case TYPE_4232H: | |
56ac0383 | 2514 | user_area_size = 86; |
118c4561 | 2515 | break; |
c1c3d564 UB |
2516 | case TYPE_232H: |
2517 | user_area_size = 80; | |
2518 | break; | |
2c1e2bde TJ |
2519 | default: |
2520 | user_area_size = 0; | |
56ac0383 | 2521 | break; |
665cda04 UB |
2522 | } |
2523 | user_area_size -= (manufacturer_size + product_size + serial_size) * 2; | |
814710ba | 2524 | |
516ebfb1 TJ |
2525 | if (user_area_size < 0) |
2526 | ftdi_error_return(-1,"eeprom size exceeded"); | |
b8aa7b35 TJ |
2527 | |
2528 | // empty eeprom | |
a35aa9bd | 2529 | memset (ftdi->eeprom->buf, 0, FTDI_MAX_EEPROM_SIZE); |
b8aa7b35 | 2530 | |
93738c79 UB |
2531 | // Bytes and Bits set for all Types |
2532 | ||
b8aa7b35 TJ |
2533 | // Addr 02: Vendor ID |
2534 | output[0x02] = eeprom->vendor_id; | |
2535 | output[0x03] = eeprom->vendor_id >> 8; | |
2536 | ||
2537 | // Addr 04: Product ID | |
2538 | output[0x04] = eeprom->product_id; | |
2539 | output[0x05] = eeprom->product_id >> 8; | |
2540 | ||
2541 | // Addr 06: Device release number (0400h for BM features) | |
2542 | output[0x06] = 0x00; | |
814710ba TJ |
2543 | switch (ftdi->type) |
2544 | { | |
f505134f HK |
2545 | case TYPE_AM: |
2546 | output[0x07] = 0x02; | |
2547 | break; | |
2548 | case TYPE_BM: | |
2549 | output[0x07] = 0x04; | |
2550 | break; | |
2551 | case TYPE_2232C: | |
2552 | output[0x07] = 0x05; | |
2553 | break; | |
2554 | case TYPE_R: | |
2555 | output[0x07] = 0x06; | |
2556 | break; | |
56ac0383 | 2557 | case TYPE_2232H: |
6123f7ab UB |
2558 | output[0x07] = 0x07; |
2559 | break; | |
56ac0383 | 2560 | case TYPE_4232H: |
6123f7ab UB |
2561 | output[0x07] = 0x08; |
2562 | break; | |
c7e4c09e UB |
2563 | case TYPE_232H: |
2564 | output[0x07] = 0x09; | |
2565 | break; | |
f505134f HK |
2566 | default: |
2567 | output[0x07] = 0x00; | |
2568 | } | |
b8aa7b35 TJ |
2569 | |
2570 | // Addr 08: Config descriptor | |
8fae3e8e TJ |
2571 | // Bit 7: always 1 |
2572 | // Bit 6: 1 if this device is self powered, 0 if bus powered | |
2573 | // Bit 5: 1 if this device uses remote wakeup | |
37186e34 | 2574 | // Bit 4-0: reserved - 0 |
5a1dcd55 | 2575 | j = 0x80; |
b8aa7b35 | 2576 | if (eeprom->self_powered == 1) |
5a1dcd55 | 2577 | j |= 0x40; |
b8aa7b35 | 2578 | if (eeprom->remote_wakeup == 1) |
5a1dcd55 | 2579 | j |= 0x20; |
b8aa7b35 TJ |
2580 | output[0x08] = j; |
2581 | ||
2582 | // Addr 09: Max power consumption: max power = value * 2 mA | |
a7c32c59 | 2583 | output[0x09] = eeprom->max_power / MAX_POWER_MILLIAMP_PER_UNIT; |
d9f0cce7 | 2584 | |
56ac0383 | 2585 | if (ftdi->type != TYPE_AM) |
93738c79 UB |
2586 | { |
2587 | // Addr 0A: Chip configuration | |
2588 | // Bit 7: 0 - reserved | |
2589 | // Bit 6: 0 - reserved | |
2590 | // Bit 5: 0 - reserved | |
56ac0383 | 2591 | // Bit 4: 1 - Change USB version |
93738c79 UB |
2592 | // Bit 3: 1 - Use the serial number string |
2593 | // Bit 2: 1 - Enable suspend pull downs for lower power | |
2594 | // Bit 1: 1 - Out EndPoint is Isochronous | |
2595 | // Bit 0: 1 - In EndPoint is Isochronous | |
2596 | // | |
2597 | j = 0; | |
2598 | if (eeprom->in_is_isochronous == 1) | |
2599 | j = j | 1; | |
2600 | if (eeprom->out_is_isochronous == 1) | |
2601 | j = j | 2; | |
2602 | output[0x0A] = j; | |
2603 | } | |
f505134f | 2604 | |
b8aa7b35 | 2605 | // Dynamic content |
93738c79 UB |
2606 | // Strings start at 0x94 (TYPE_AM, TYPE_BM) |
2607 | // 0x96 (TYPE_2232C), 0x98 (TYPE_R) and 0x9a (TYPE_x232H) | |
c7e4c09e | 2608 | // 0xa0 (TYPE_232H) |
93738c79 | 2609 | i = 0; |
56ac0383 TJ |
2610 | switch (ftdi->type) |
2611 | { | |
c7e4c09e UB |
2612 | case TYPE_232H: |
2613 | i += 2; | |
56ac0383 TJ |
2614 | case TYPE_2232H: |
2615 | case TYPE_4232H: | |
2616 | i += 2; | |
2617 | case TYPE_R: | |
2618 | i += 2; | |
2619 | case TYPE_2232C: | |
2620 | i += 2; | |
2621 | case TYPE_AM: | |
2622 | case TYPE_BM: | |
2623 | i += 0x94; | |
f505134f | 2624 | } |
93738c79 | 2625 | /* Wrap around 0x80 for 128 byte EEPROMS (Internale and 93x46) */ |
e2bbd9af | 2626 | eeprom_size_mask = eeprom->size -1; |
c201f80f | 2627 | |
93738c79 UB |
2628 | // Addr 0E: Offset of the manufacturer string + 0x80, calculated later |
2629 | // Addr 0F: Length of manufacturer string | |
22d12cda | 2630 | // Output manufacturer |
93738c79 | 2631 | output[0x0E] = i; // calculate offset |
e2bbd9af TJ |
2632 | output[i & eeprom_size_mask] = manufacturer_size*2 + 2, i++; |
2633 | output[i & eeprom_size_mask] = 0x03, i++; // type: string | |
22d12cda TJ |
2634 | for (j = 0; j < manufacturer_size; j++) |
2635 | { | |
e2bbd9af TJ |
2636 | output[i & eeprom_size_mask] = eeprom->manufacturer[j], i++; |
2637 | output[i & eeprom_size_mask] = 0x00, i++; | |
b8aa7b35 | 2638 | } |
93738c79 | 2639 | output[0x0F] = manufacturer_size*2 + 2; |
b8aa7b35 | 2640 | |
93738c79 UB |
2641 | // Addr 10: Offset of the product string + 0x80, calculated later |
2642 | // Addr 11: Length of product string | |
c201f80f | 2643 | output[0x10] = i | 0x80; // calculate offset |
e2bbd9af TJ |
2644 | output[i & eeprom_size_mask] = product_size*2 + 2, i++; |
2645 | output[i & eeprom_size_mask] = 0x03, i++; | |
22d12cda TJ |
2646 | for (j = 0; j < product_size; j++) |
2647 | { | |
e2bbd9af TJ |
2648 | output[i & eeprom_size_mask] = eeprom->product[j], i++; |
2649 | output[i & eeprom_size_mask] = 0x00, i++; | |
b8aa7b35 | 2650 | } |
93738c79 | 2651 | output[0x11] = product_size*2 + 2; |
37186e34 | 2652 | |
93738c79 UB |
2653 | // Addr 12: Offset of the serial string + 0x80, calculated later |
2654 | // Addr 13: Length of serial string | |
c201f80f | 2655 | output[0x12] = i | 0x80; // calculate offset |
e2bbd9af TJ |
2656 | output[i & eeprom_size_mask] = serial_size*2 + 2, i++; |
2657 | output[i & eeprom_size_mask] = 0x03, i++; | |
22d12cda TJ |
2658 | for (j = 0; j < serial_size; j++) |
2659 | { | |
e2bbd9af TJ |
2660 | output[i & eeprom_size_mask] = eeprom->serial[j], i++; |
2661 | output[i & eeprom_size_mask] = 0x00, i++; | |
b8aa7b35 | 2662 | } |
c2700d6d TJ |
2663 | |
2664 | // Legacy port name and PnP fields for FT2232 and newer chips | |
2665 | if (ftdi->type > TYPE_BM) | |
2666 | { | |
2667 | output[i & eeprom_size_mask] = 0x02; /* as seen when written with FTD2XX */ | |
2668 | i++; | |
2669 | output[i & eeprom_size_mask] = 0x03; /* as seen when written with FTD2XX */ | |
2670 | i++; | |
2671 | output[i & eeprom_size_mask] = eeprom->is_not_pnp; /* as seen when written with FTD2XX */ | |
2672 | i++; | |
2673 | } | |
802a949e | 2674 | |
93738c79 | 2675 | output[0x13] = serial_size*2 + 2; |
b8aa7b35 | 2676 | |
56ac0383 | 2677 | if (ftdi->type > TYPE_AM) /* use_serial not used in AM devices */ |
bf2f6ef7 | 2678 | { |
d4b5af27 | 2679 | if (eeprom->use_serial) |
bf2f6ef7 UB |
2680 | output[0x0A] |= USE_SERIAL_NUM; |
2681 | else | |
2682 | output[0x0A] &= ~USE_SERIAL_NUM; | |
2683 | } | |
3802140c UB |
2684 | |
2685 | /* Bytes and Bits specific to (some) types | |
2686 | Write linear, as this allows easier fixing*/ | |
56ac0383 TJ |
2687 | switch (ftdi->type) |
2688 | { | |
2689 | case TYPE_AM: | |
2690 | break; | |
2691 | case TYPE_BM: | |
2692 | output[0x0C] = eeprom->usb_version & 0xff; | |
2693 | output[0x0D] = (eeprom->usb_version>>8) & 0xff; | |
2694 | if (eeprom->use_usb_version == USE_USB_VERSION_BIT) | |
2695 | output[0x0A] |= USE_USB_VERSION_BIT; | |
2696 | else | |
2697 | output[0x0A] &= ~USE_USB_VERSION_BIT; | |
caec1294 | 2698 | |
56ac0383 TJ |
2699 | break; |
2700 | case TYPE_2232C: | |
3802140c | 2701 | |
c8f69686 | 2702 | output[0x00] = type2bit(eeprom->channel_a_type, TYPE_2232C); |
56ac0383 TJ |
2703 | if ( eeprom->channel_a_driver == DRIVER_VCP) |
2704 | output[0x00] |= DRIVER_VCP; | |
2705 | else | |
2706 | output[0x00] &= ~DRIVER_VCP; | |
4e74064b | 2707 | |
56ac0383 TJ |
2708 | if ( eeprom->high_current_a == HIGH_CURRENT_DRIVE) |
2709 | output[0x00] |= HIGH_CURRENT_DRIVE; | |
2710 | else | |
2711 | output[0x00] &= ~HIGH_CURRENT_DRIVE; | |
3802140c | 2712 | |
c8f69686 | 2713 | output[0x01] = type2bit(eeprom->channel_b_type, TYPE_2232C); |
56ac0383 TJ |
2714 | if ( eeprom->channel_b_driver == DRIVER_VCP) |
2715 | output[0x01] |= DRIVER_VCP; | |
2716 | else | |
2717 | output[0x01] &= ~DRIVER_VCP; | |
4e74064b | 2718 | |
56ac0383 TJ |
2719 | if ( eeprom->high_current_b == HIGH_CURRENT_DRIVE) |
2720 | output[0x01] |= HIGH_CURRENT_DRIVE; | |
2721 | else | |
2722 | output[0x01] &= ~HIGH_CURRENT_DRIVE; | |
3802140c | 2723 | |
56ac0383 TJ |
2724 | if (eeprom->in_is_isochronous == 1) |
2725 | output[0x0A] |= 0x1; | |
2726 | else | |
2727 | output[0x0A] &= ~0x1; | |
2728 | if (eeprom->out_is_isochronous == 1) | |
2729 | output[0x0A] |= 0x2; | |
2730 | else | |
2731 | output[0x0A] &= ~0x2; | |
2732 | if (eeprom->suspend_pull_downs == 1) | |
2733 | output[0x0A] |= 0x4; | |
2734 | else | |
2735 | output[0x0A] &= ~0x4; | |
2736 | if (eeprom->use_usb_version == USE_USB_VERSION_BIT) | |
2737 | output[0x0A] |= USE_USB_VERSION_BIT; | |
2738 | else | |
2739 | output[0x0A] &= ~USE_USB_VERSION_BIT; | |
4e74064b | 2740 | |
56ac0383 TJ |
2741 | output[0x0C] = eeprom->usb_version & 0xff; |
2742 | output[0x0D] = (eeprom->usb_version>>8) & 0xff; | |
2743 | output[0x14] = eeprom->chip; | |
2744 | break; | |
2745 | case TYPE_R: | |
2746 | if (eeprom->high_current == HIGH_CURRENT_DRIVE_R) | |
2747 | output[0x00] |= HIGH_CURRENT_DRIVE_R; | |
2748 | output[0x01] = 0x40; /* Hard coded Endpoint Size*/ | |
4e74064b | 2749 | |
56ac0383 TJ |
2750 | if (eeprom->suspend_pull_downs == 1) |
2751 | output[0x0A] |= 0x4; | |
2752 | else | |
2753 | output[0x0A] &= ~0x4; | |
2754 | output[0x0B] = eeprom->invert; | |
2755 | output[0x0C] = eeprom->usb_version & 0xff; | |
2756 | output[0x0D] = (eeprom->usb_version>>8) & 0xff; | |
4e74064b | 2757 | |
56ac0383 TJ |
2758 | if (eeprom->cbus_function[0] > CBUS_BB) |
2759 | output[0x14] = CBUS_TXLED; | |
2760 | else | |
2761 | output[0x14] = eeprom->cbus_function[0]; | |
4e74064b | 2762 | |
56ac0383 TJ |
2763 | if (eeprom->cbus_function[1] > CBUS_BB) |
2764 | output[0x14] |= CBUS_RXLED<<4; | |
2765 | else | |
2766 | output[0x14] |= eeprom->cbus_function[1]<<4; | |
4e74064b | 2767 | |
56ac0383 TJ |
2768 | if (eeprom->cbus_function[2] > CBUS_BB) |
2769 | output[0x15] = CBUS_TXDEN; | |
2770 | else | |
2771 | output[0x15] = eeprom->cbus_function[2]; | |
4e74064b | 2772 | |
56ac0383 TJ |
2773 | if (eeprom->cbus_function[3] > CBUS_BB) |
2774 | output[0x15] |= CBUS_PWREN<<4; | |
2775 | else | |
2776 | output[0x15] |= eeprom->cbus_function[3]<<4; | |
4e74064b | 2777 | |
56ac0383 TJ |
2778 | if (eeprom->cbus_function[4] > CBUS_CLK6) |
2779 | output[0x16] = CBUS_SLEEP; | |
2780 | else | |
2781 | output[0x16] = eeprom->cbus_function[4]; | |
2782 | break; | |
2783 | case TYPE_2232H: | |
c8f69686 | 2784 | output[0x00] = type2bit(eeprom->channel_a_type, TYPE_2232H); |
56ac0383 TJ |
2785 | if ( eeprom->channel_a_driver == DRIVER_VCP) |
2786 | output[0x00] |= DRIVER_VCP; | |
2787 | else | |
2788 | output[0x00] &= ~DRIVER_VCP; | |
6e6a1c3f | 2789 | |
c8f69686 | 2790 | output[0x01] = type2bit(eeprom->channel_b_type, TYPE_2232H); |
56ac0383 TJ |
2791 | if ( eeprom->channel_b_driver == DRIVER_VCP) |
2792 | output[0x01] |= DRIVER_VCP; | |
2793 | else | |
2794 | output[0x01] &= ~DRIVER_VCP; | |
2795 | if (eeprom->suspend_dbus7 == SUSPEND_DBUS7_BIT) | |
2796 | output[0x01] |= SUSPEND_DBUS7_BIT; | |
2797 | else | |
2798 | output[0x01] &= ~SUSPEND_DBUS7_BIT; | |
2799 | ||
2800 | if (eeprom->suspend_pull_downs == 1) | |
2801 | output[0x0A] |= 0x4; | |
2802 | else | |
2803 | output[0x0A] &= ~0x4; | |
2804 | ||
2805 | if (eeprom->group0_drive > DRIVE_16MA) | |
2806 | output[0x0c] |= DRIVE_16MA; | |
2807 | else | |
2808 | output[0x0c] |= eeprom->group0_drive; | |
2809 | if (eeprom->group0_schmitt == IS_SCHMITT) | |
2810 | output[0x0c] |= IS_SCHMITT; | |
2811 | if (eeprom->group0_slew == SLOW_SLEW) | |
2812 | output[0x0c] |= SLOW_SLEW; | |
2813 | ||
2814 | if (eeprom->group1_drive > DRIVE_16MA) | |
2815 | output[0x0c] |= DRIVE_16MA<<4; | |
2816 | else | |
2817 | output[0x0c] |= eeprom->group1_drive<<4; | |
2818 | if (eeprom->group1_schmitt == IS_SCHMITT) | |
2819 | output[0x0c] |= IS_SCHMITT<<4; | |
2820 | if (eeprom->group1_slew == SLOW_SLEW) | |
2821 | output[0x0c] |= SLOW_SLEW<<4; | |
2822 | ||
2823 | if (eeprom->group2_drive > DRIVE_16MA) | |
2824 | output[0x0d] |= DRIVE_16MA; | |
2825 | else | |
2826 | output[0x0d] |= eeprom->group2_drive; | |
2827 | if (eeprom->group2_schmitt == IS_SCHMITT) | |
2828 | output[0x0d] |= IS_SCHMITT; | |
2829 | if (eeprom->group2_slew == SLOW_SLEW) | |
2830 | output[0x0d] |= SLOW_SLEW; | |
2831 | ||
2832 | if (eeprom->group3_drive > DRIVE_16MA) | |
2833 | output[0x0d] |= DRIVE_16MA<<4; | |
2834 | else | |
2835 | output[0x0d] |= eeprom->group3_drive<<4; | |
2836 | if (eeprom->group3_schmitt == IS_SCHMITT) | |
2837 | output[0x0d] |= IS_SCHMITT<<4; | |
2838 | if (eeprom->group3_slew == SLOW_SLEW) | |
2839 | output[0x0d] |= SLOW_SLEW<<4; | |
3802140c | 2840 | |
56ac0383 | 2841 | output[0x18] = eeprom->chip; |
3802140c | 2842 | |
56ac0383 TJ |
2843 | break; |
2844 | case TYPE_4232H: | |
be4bae37 AL |
2845 | if (eeprom->channel_a_driver == DRIVER_VCP) |
2846 | output[0x00] |= DRIVER_VCP; | |
2847 | else | |
2848 | output[0x00] &= ~DRIVER_VCP; | |
2849 | if (eeprom->channel_b_driver == DRIVER_VCP) | |
2850 | output[0x01] |= DRIVER_VCP; | |
2851 | else | |
2852 | output[0x01] &= ~DRIVER_VCP; | |
2853 | if (eeprom->channel_c_driver == DRIVER_VCP) | |
2854 | output[0x00] |= (DRIVER_VCP << 4); | |
2855 | else | |
2856 | output[0x00] &= ~(DRIVER_VCP << 4); | |
2857 | if (eeprom->channel_d_driver == DRIVER_VCP) | |
2858 | output[0x01] |= (DRIVER_VCP << 4); | |
2859 | else | |
2860 | output[0x01] &= ~(DRIVER_VCP << 4); | |
2861 | ||
2862 | if (eeprom->suspend_pull_downs == 1) | |
2863 | output[0x0a] |= 0x4; | |
2864 | else | |
2865 | output[0x0a] &= ~0x4; | |
2866 | ||
2867 | if (eeprom->channel_a_rs485enable) | |
2868 | output[0x0b] |= CHANNEL_IS_RS485 << 0; | |
2869 | else | |
2870 | output[0x0b] &= ~(CHANNEL_IS_RS485 << 0); | |
2871 | if (eeprom->channel_b_rs485enable) | |
2872 | output[0x0b] |= CHANNEL_IS_RS485 << 1; | |
2873 | else | |
2874 | output[0x0b] &= ~(CHANNEL_IS_RS485 << 1); | |
2875 | if (eeprom->channel_c_rs485enable) | |
2876 | output[0x0b] |= CHANNEL_IS_RS485 << 2; | |
2877 | else | |
2878 | output[0x0b] &= ~(CHANNEL_IS_RS485 << 2); | |
2879 | if (eeprom->channel_d_rs485enable) | |
2880 | output[0x0b] |= CHANNEL_IS_RS485 << 3; | |
2881 | else | |
2882 | output[0x0b] &= ~(CHANNEL_IS_RS485 << 3); | |
2883 | ||
2884 | if (eeprom->group0_drive > DRIVE_16MA) | |
2885 | output[0x0c] |= DRIVE_16MA; | |
2886 | else | |
2887 | output[0x0c] |= eeprom->group0_drive; | |
2888 | if (eeprom->group0_schmitt == IS_SCHMITT) | |
2889 | output[0x0c] |= IS_SCHMITT; | |
2890 | if (eeprom->group0_slew == SLOW_SLEW) | |
2891 | output[0x0c] |= SLOW_SLEW; | |
2892 | ||
2893 | if (eeprom->group1_drive > DRIVE_16MA) | |
2894 | output[0x0c] |= DRIVE_16MA<<4; | |
2895 | else | |
2896 | output[0x0c] |= eeprom->group1_drive<<4; | |
2897 | if (eeprom->group1_schmitt == IS_SCHMITT) | |
2898 | output[0x0c] |= IS_SCHMITT<<4; | |
2899 | if (eeprom->group1_slew == SLOW_SLEW) | |
2900 | output[0x0c] |= SLOW_SLEW<<4; | |
2901 | ||
2902 | if (eeprom->group2_drive > DRIVE_16MA) | |
2903 | output[0x0d] |= DRIVE_16MA; | |
2904 | else | |
2905 | output[0x0d] |= eeprom->group2_drive; | |
2906 | if (eeprom->group2_schmitt == IS_SCHMITT) | |
2907 | output[0x0d] |= IS_SCHMITT; | |
2908 | if (eeprom->group2_slew == SLOW_SLEW) | |
2909 | output[0x0d] |= SLOW_SLEW; | |
2910 | ||
2911 | if (eeprom->group3_drive > DRIVE_16MA) | |
2912 | output[0x0d] |= DRIVE_16MA<<4; | |
2913 | else | |
2914 | output[0x0d] |= eeprom->group3_drive<<4; | |
2915 | if (eeprom->group3_schmitt == IS_SCHMITT) | |
2916 | output[0x0d] |= IS_SCHMITT<<4; | |
2917 | if (eeprom->group3_slew == SLOW_SLEW) | |
2918 | output[0x0d] |= SLOW_SLEW<<4; | |
2919 | ||
c7e4c09e | 2920 | output[0x18] = eeprom->chip; |
be4bae37 | 2921 | |
c7e4c09e UB |
2922 | break; |
2923 | case TYPE_232H: | |
c8f69686 | 2924 | output[0x00] = type2bit(eeprom->channel_a_type, TYPE_232H); |
ac4a82a5 UB |
2925 | if ( eeprom->channel_a_driver == DRIVER_VCP) |
2926 | output[0x00] |= DRIVER_VCPH; | |
2927 | else | |
2928 | output[0x00] &= ~DRIVER_VCPH; | |
837a71d6 UB |
2929 | if (eeprom->powersave) |
2930 | output[0x01] |= POWER_SAVE_DISABLE_H; | |
2931 | else | |
2932 | output[0x01] &= ~POWER_SAVE_DISABLE_H; | |
18199b76 UB |
2933 | if (eeprom->clock_polarity) |
2934 | output[0x01] |= FT1284_CLK_IDLE_STATE; | |
2935 | else | |
2936 | output[0x01] &= ~FT1284_CLK_IDLE_STATE; | |
2937 | if (eeprom->data_order) | |
2938 | output[0x01] |= FT1284_DATA_LSB; | |
2939 | else | |
2940 | output[0x01] &= ~FT1284_DATA_LSB; | |
2941 | if (eeprom->flow_control) | |
2942 | output[0x01] |= FT1284_FLOW_CONTROL; | |
2943 | else | |
2944 | output[0x01] &= ~FT1284_FLOW_CONTROL; | |
91d7a201 UB |
2945 | if (eeprom->group0_drive > DRIVE_16MA) |
2946 | output[0x0c] |= DRIVE_16MA; | |
2947 | else | |
2948 | output[0x0c] |= eeprom->group0_drive; | |
2949 | if (eeprom->group0_schmitt == IS_SCHMITT) | |
2950 | output[0x0c] |= IS_SCHMITT; | |
2951 | if (eeprom->group0_slew == SLOW_SLEW) | |
2952 | output[0x0c] |= SLOW_SLEW; | |
2953 | ||
2954 | if (eeprom->group1_drive > DRIVE_16MA) | |
2955 | output[0x0d] |= DRIVE_16MA; | |
2956 | else | |
2957 | output[0x0d] |= eeprom->group1_drive; | |
2958 | if (eeprom->group1_schmitt == IS_SCHMITT) | |
2959 | output[0x0d] |= IS_SCHMITT; | |
2960 | if (eeprom->group1_slew == SLOW_SLEW) | |
2961 | output[0x0d] |= SLOW_SLEW; | |
2962 | ||
263d3ba0 UB |
2963 | set_ft232h_cbus(eeprom, output); |
2964 | ||
c7e4c09e UB |
2965 | output[0x1e] = eeprom->chip; |
2966 | fprintf(stderr,"FIXME: Build FT232H specific EEPROM settings\n"); | |
2967 | break; | |
2968 | ||
3802140c UB |
2969 | } |
2970 | ||
cbf65673 | 2971 | // calculate checksum |
b8aa7b35 | 2972 | checksum = 0xAAAA; |
d9f0cce7 | 2973 | |
22d12cda TJ |
2974 | for (i = 0; i < eeprom->size/2-1; i++) |
2975 | { | |
d9f0cce7 TJ |
2976 | value = output[i*2]; |
2977 | value += output[(i*2)+1] << 8; | |
b8aa7b35 | 2978 | |
d9f0cce7 TJ |
2979 | checksum = value^checksum; |
2980 | checksum = (checksum << 1) | (checksum >> 15); | |
b8aa7b35 TJ |
2981 | } |
2982 | ||
c201f80f TJ |
2983 | output[eeprom->size-2] = checksum; |
2984 | output[eeprom->size-1] = checksum >> 8; | |
b8aa7b35 | 2985 | |
516ebfb1 | 2986 | return user_area_size; |
b8aa7b35 | 2987 | } |
c8f69686 UB |
2988 | /* Decode the encoded EEPROM field for the FTDI Mode into a value for the abstracted |
2989 | * EEPROM structure | |
2990 | * | |
2991 | * FTD2XX doesn't allow to set multiple bits in the interface mode bitfield, and so do we | |
2992 | */ | |
2993 | static unsigned char bit2type(unsigned char bits) | |
0fc2170c UB |
2994 | { |
2995 | switch (bits) | |
2996 | { | |
c8f69686 UB |
2997 | case 0: return CHANNEL_IS_UART; |
2998 | case 1: return CHANNEL_IS_FIFO; | |
2999 | case 2: return CHANNEL_IS_OPTO; | |
3000 | case 4: return CHANNEL_IS_CPU; | |
3001 | case 8: return CHANNEL_IS_FT1284; | |
0fc2170c UB |
3002 | default: |
3003 | fprintf(stderr," Unexpected value %d for Hardware Interface type\n", | |
3004 | bits); | |
3005 | } | |
3006 | return 0; | |
3007 | } | |
4af1d1bb MK |
3008 | /** |
3009 | Decode binary EEPROM image into an ftdi_eeprom structure. | |
3010 | ||
a35aa9bd UB |
3011 | \param ftdi pointer to ftdi_context |
3012 | \param verbose Decode EEPROM on stdout | |
56ac0383 | 3013 | |
4af1d1bb MK |
3014 | \retval 0: all fine |
3015 | \retval -1: something went wrong | |
3016 | ||
3017 | FIXME: How to pass size? How to handle size field in ftdi_eeprom? | |
3018 | FIXME: Strings are malloc'ed here and should be freed somewhere | |
3019 | */ | |
a35aa9bd | 3020 | int ftdi_eeprom_decode(struct ftdi_context *ftdi, int verbose) |
b56d5a64 MK |
3021 | { |
3022 | unsigned char i, j; | |
3023 | unsigned short checksum, eeprom_checksum, value; | |
3024 | unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0; | |
f2cd9fd5 | 3025 | int eeprom_size; |
c0a96aed | 3026 | struct ftdi_eeprom *eeprom; |
a35aa9bd | 3027 | unsigned char *buf = ftdi->eeprom->buf; |
38801bf8 | 3028 | int release; |
22a1b5c1 | 3029 | |
c0a96aed | 3030 | if (ftdi == NULL) |
cc9c9d58 | 3031 | ftdi_error_return(-1,"No context"); |
c0a96aed | 3032 | if (ftdi->eeprom == NULL) |
6cd4f922 | 3033 | ftdi_error_return(-1,"No eeprom structure"); |
56ac0383 | 3034 | |
c0a96aed | 3035 | eeprom = ftdi->eeprom; |
a35aa9bd | 3036 | eeprom_size = eeprom->size; |
b56d5a64 | 3037 | |
b56d5a64 MK |
3038 | // Addr 02: Vendor ID |
3039 | eeprom->vendor_id = buf[0x02] + (buf[0x03] << 8); | |
3040 | ||
3041 | // Addr 04: Product ID | |
3042 | eeprom->product_id = buf[0x04] + (buf[0x05] << 8); | |
22d12cda | 3043 | |
38801bf8 | 3044 | release = buf[0x06] + (buf[0x07]<<8); |
b56d5a64 MK |
3045 | |
3046 | // Addr 08: Config descriptor | |
3047 | // Bit 7: always 1 | |
3048 | // Bit 6: 1 if this device is self powered, 0 if bus powered | |
3049 | // Bit 5: 1 if this device uses remote wakeup | |
f6ef2983 | 3050 | eeprom->self_powered = buf[0x08] & 0x40; |
814710ba | 3051 | eeprom->remote_wakeup = buf[0x08] & 0x20; |
b56d5a64 MK |
3052 | |
3053 | // Addr 09: Max power consumption: max power = value * 2 mA | |
a7c32c59 | 3054 | eeprom->max_power = MAX_POWER_MILLIAMP_PER_UNIT * buf[0x09]; |
b56d5a64 MK |
3055 | |
3056 | // Addr 0A: Chip configuration | |
3057 | // Bit 7: 0 - reserved | |
3058 | // Bit 6: 0 - reserved | |
3059 | // Bit 5: 0 - reserved | |
caec1294 | 3060 | // Bit 4: 1 - Change USB version on BM and 2232C |
b56d5a64 MK |
3061 | // Bit 3: 1 - Use the serial number string |
3062 | // Bit 2: 1 - Enable suspend pull downs for lower power | |
3063 | // Bit 1: 1 - Out EndPoint is Isochronous | |
3064 | // Bit 0: 1 - In EndPoint is Isochronous | |
3065 | // | |
8d3fe5c9 UB |
3066 | eeprom->in_is_isochronous = buf[0x0A]&0x01; |
3067 | eeprom->out_is_isochronous = buf[0x0A]&0x02; | |
3068 | eeprom->suspend_pull_downs = buf[0x0A]&0x04; | |
d4b5af27 | 3069 | eeprom->use_serial = (buf[0x0A] & USE_SERIAL_NUM)?1:0; |
caec1294 | 3070 | eeprom->use_usb_version = buf[0x0A] & USE_USB_VERSION_BIT; |
b56d5a64 | 3071 | |
b1859923 | 3072 | // Addr 0C: USB version low byte when 0x0A |
56ac0383 | 3073 | // Addr 0D: USB version high byte when 0x0A |
b1859923 | 3074 | eeprom->usb_version = buf[0x0C] + (buf[0x0D] << 8); |
b56d5a64 MK |
3075 | |
3076 | // Addr 0E: Offset of the manufacturer string + 0x80, calculated later | |
3077 | // Addr 0F: Length of manufacturer string | |
3078 | manufacturer_size = buf[0x0F]/2; | |
56ac0383 | 3079 | if (eeprom->manufacturer) |
74e8e79d | 3080 | free(eeprom->manufacturer); |
56ac0383 | 3081 | if (manufacturer_size > 0) |
acc1fa05 UB |
3082 | { |
3083 | eeprom->manufacturer = malloc(manufacturer_size); | |
3084 | if (eeprom->manufacturer) | |
3085 | { | |
3086 | // Decode manufacturer | |
84ec032f | 3087 | i = buf[0x0E] & (eeprom_size -1); // offset |
acc1fa05 UB |
3088 | for (j=0;j<manufacturer_size-1;j++) |
3089 | { | |
3090 | eeprom->manufacturer[j] = buf[2*j+i+2]; | |
3091 | } | |
3092 | eeprom->manufacturer[j] = '\0'; | |
3093 | } | |
3094 | } | |
b56d5a64 MK |
3095 | else eeprom->manufacturer = NULL; |
3096 | ||
3097 | // Addr 10: Offset of the product string + 0x80, calculated later | |
3098 | // Addr 11: Length of product string | |
56ac0383 | 3099 | if (eeprom->product) |
74e8e79d | 3100 | free(eeprom->product); |
b56d5a64 | 3101 | product_size = buf[0x11]/2; |
acc1fa05 UB |
3102 | if (product_size > 0) |
3103 | { | |
3104 | eeprom->product = malloc(product_size); | |
56ac0383 | 3105 | if (eeprom->product) |
acc1fa05 UB |
3106 | { |
3107 | // Decode product name | |
84ec032f | 3108 | i = buf[0x10] & (eeprom_size -1); // offset |
acc1fa05 UB |
3109 | for (j=0;j<product_size-1;j++) |
3110 | { | |
3111 | eeprom->product[j] = buf[2*j+i+2]; | |
3112 | } | |
3113 | eeprom->product[j] = '\0'; | |
3114 | } | |
3115 | } | |
b56d5a64 MK |
3116 | else eeprom->product = NULL; |
3117 | ||
3118 | // Addr 12: Offset of the serial string + 0x80, calculated later | |
3119 | // Addr 13: Length of serial string | |
56ac0383 | 3120 | if (eeprom->serial) |
74e8e79d | 3121 | free(eeprom->serial); |
b56d5a64 | 3122 | serial_size = buf[0x13]/2; |
acc1fa05 UB |
3123 | if (serial_size > 0) |
3124 | { | |
3125 | eeprom->serial = malloc(serial_size); | |
56ac0383 | 3126 | if (eeprom->serial) |
acc1fa05 UB |
3127 | { |
3128 | // Decode serial | |
84ec032f | 3129 | i = buf[0x12] & (eeprom_size -1); // offset |
acc1fa05 UB |
3130 | for (j=0;j<serial_size-1;j++) |
3131 | { | |
3132 | eeprom->serial[j] = buf[2*j+i+2]; | |
3133 | } | |
3134 | eeprom->serial[j] = '\0'; | |
3135 | } | |
3136 | } | |
b56d5a64 MK |
3137 | else eeprom->serial = NULL; |
3138 | ||
b56d5a64 MK |
3139 | // verify checksum |
3140 | checksum = 0xAAAA; | |
3141 | ||
22d12cda TJ |
3142 | for (i = 0; i < eeprom_size/2-1; i++) |
3143 | { | |
b56d5a64 MK |
3144 | value = buf[i*2]; |
3145 | value += buf[(i*2)+1] << 8; | |
3146 | ||
3147 | checksum = value^checksum; | |
3148 | checksum = (checksum << 1) | (checksum >> 15); | |
3149 | } | |
3150 | ||
3151 | eeprom_checksum = buf[eeprom_size-2] + (buf[eeprom_size-1] << 8); | |
3152 | ||
22d12cda TJ |
3153 | if (eeprom_checksum != checksum) |
3154 | { | |
3155 | fprintf(stderr, "Checksum Error: %04x %04x\n", checksum, eeprom_checksum); | |
cc9c9d58 | 3156 | ftdi_error_return(-1,"EEPROM checksum error"); |
4af1d1bb MK |
3157 | } |
3158 | ||
eb498cff | 3159 | eeprom->channel_a_type = 0; |
aa099f46 | 3160 | if ((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM)) |
f6ef2983 | 3161 | { |
6cd4f922 | 3162 | eeprom->chip = -1; |
f6ef2983 | 3163 | } |
56ac0383 | 3164 | else if (ftdi->type == TYPE_2232C) |
f6ef2983 | 3165 | { |
0fc2170c | 3166 | eeprom->channel_a_type = bit2type(buf[0x00] & 0x7); |
2cde7c52 UB |
3167 | eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP; |
3168 | eeprom->high_current_a = buf[0x00] & HIGH_CURRENT_DRIVE; | |
3169 | eeprom->channel_b_type = buf[0x01] & 0x7; | |
3170 | eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP; | |
3171 | eeprom->high_current_b = buf[0x01] & HIGH_CURRENT_DRIVE; | |
6cd4f922 | 3172 | eeprom->chip = buf[0x14]; |
065edc58 | 3173 | } |
56ac0383 | 3174 | else if (ftdi->type == TYPE_R) |
564b2716 | 3175 | { |
2cde7c52 | 3176 | /* TYPE_R flags D2XX, not VCP as all others*/ |
be4bae37 | 3177 | eeprom->channel_a_driver = ~buf[0x00] & DRIVER_VCP; |
2cde7c52 | 3178 | eeprom->high_current = buf[0x00] & HIGH_CURRENT_DRIVE_R; |
56ac0383 TJ |
3179 | if ( (buf[0x01]&0x40) != 0x40) |
3180 | fprintf(stderr, | |
3181 | "TYPE_R EEPROM byte[0x01] Bit 6 unexpected Endpoint size." | |
3182 | " If this happened with the\n" | |
3183 | " EEPROM programmed by FTDI tools, please report " | |
3184 | "to libftdi@developer.intra2net.com\n"); | |
2cde7c52 | 3185 | |
6cd4f922 | 3186 | eeprom->chip = buf[0x16]; |
cecb9cb2 UB |
3187 | // Addr 0B: Invert data lines |
3188 | // Works only on FT232R, not FT245R, but no way to distinguish | |
07851949 UB |
3189 | eeprom->invert = buf[0x0B]; |
3190 | // Addr 14: CBUS function: CBUS0, CBUS1 | |
3191 | // Addr 15: CBUS function: CBUS2, CBUS3 | |
3192 | // Addr 16: CBUS function: CBUS5 | |
3193 | eeprom->cbus_function[0] = buf[0x14] & 0x0f; | |
3194 | eeprom->cbus_function[1] = (buf[0x14] >> 4) & 0x0f; | |
3195 | eeprom->cbus_function[2] = buf[0x15] & 0x0f; | |
3196 | eeprom->cbus_function[3] = (buf[0x15] >> 4) & 0x0f; | |
3197 | eeprom->cbus_function[4] = buf[0x16] & 0x0f; | |
564b2716 | 3198 | } |
be4bae37 | 3199 | else if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H)) |
db099ec5 | 3200 | { |
2cde7c52 | 3201 | eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP; |
2cde7c52 UB |
3202 | eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP; |
3203 | ||
56ac0383 | 3204 | if (ftdi->type == TYPE_2232H) |
be4bae37 AL |
3205 | { |
3206 | eeprom->channel_a_type = bit2type(buf[0x00] & 0x7); | |
3207 | eeprom->channel_b_type = bit2type(buf[0x01] & 0x7); | |
ec0dcd3f | 3208 | eeprom->suspend_dbus7 = buf[0x01] & SUSPEND_DBUS7_BIT; |
be4bae37 AL |
3209 | } |
3210 | else | |
3211 | { | |
3212 | eeprom->channel_c_driver = (buf[0x00] >> 4) & DRIVER_VCP; | |
3213 | eeprom->channel_d_driver = (buf[0x01] >> 4) & DRIVER_VCP; | |
3214 | eeprom->channel_a_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 0); | |
3215 | eeprom->channel_b_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 1); | |
3216 | eeprom->channel_c_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 2); | |
3217 | eeprom->channel_d_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 3); | |
3218 | } | |
2cde7c52 | 3219 | |
6cd4f922 | 3220 | eeprom->chip = buf[0x18]; |
db099ec5 UB |
3221 | eeprom->group0_drive = buf[0x0c] & DRIVE_16MA; |
3222 | eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT; | |
3223 | eeprom->group0_slew = buf[0x0c] & SLOW_SLEW; | |
3224 | eeprom->group1_drive = (buf[0x0c] >> 4) & 0x3; | |
3225 | eeprom->group1_schmitt = (buf[0x0c] >> 4) & IS_SCHMITT; | |
3226 | eeprom->group1_slew = (buf[0x0c] >> 4) & SLOW_SLEW; | |
3227 | eeprom->group2_drive = buf[0x0d] & DRIVE_16MA; | |
3228 | eeprom->group2_schmitt = buf[0x0d] & IS_SCHMITT; | |
3229 | eeprom->group2_slew = buf[0x0d] & SLOW_SLEW; | |
3230 | eeprom->group3_drive = (buf[0x0d] >> 4) & DRIVE_16MA; | |
3231 | eeprom->group3_schmitt = (buf[0x0d] >> 4) & IS_SCHMITT; | |
3232 | eeprom->group3_slew = (buf[0x0d] >> 4) & SLOW_SLEW; | |
947d9552 | 3233 | } |
c7e4c09e UB |
3234 | else if (ftdi->type == TYPE_232H) |
3235 | { | |
263d3ba0 UB |
3236 | int i; |
3237 | ||
ac4a82a5 UB |
3238 | eeprom->channel_a_type = buf[0x00] & 0xf; |
3239 | eeprom->channel_a_driver = (buf[0x00] & DRIVER_VCPH)?DRIVER_VCP:0; | |
18199b76 UB |
3240 | eeprom->clock_polarity = buf[0x01] & FT1284_CLK_IDLE_STATE; |
3241 | eeprom->data_order = buf[0x01] & FT1284_DATA_LSB; | |
3242 | eeprom->flow_control = buf[0x01] & FT1284_FLOW_CONTROL; | |
837a71d6 | 3243 | eeprom->powersave = buf[0x01] & POWER_SAVE_DISABLE_H; |
91d7a201 UB |
3244 | eeprom->group0_drive = buf[0x0c] & DRIVE_16MA; |
3245 | eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT; | |
3246 | eeprom->group0_slew = buf[0x0c] & SLOW_SLEW; | |
3247 | eeprom->group1_drive = buf[0x0d] & DRIVE_16MA; | |
3248 | eeprom->group1_schmitt = buf[0x0d] & IS_SCHMITT; | |
3249 | eeprom->group1_slew = buf[0x0d] & SLOW_SLEW; | |
3250 | ||
263d3ba0 UB |
3251 | for(i=0; i<5; i++) |
3252 | { | |
3253 | eeprom->cbus_function[2*i ] = buf[0x18+i] & 0x0f; | |
3254 | eeprom->cbus_function[2*i+1] = (buf[0x18+i] >> 4) & 0x0f; | |
3255 | } | |
c7e4c09e UB |
3256 | eeprom->chip = buf[0x1e]; |
3257 | /*FIXME: Decipher more values*/ | |
3258 | } | |
56ac0383 TJ |
3259 | |
3260 | if (verbose) | |
f6ef2983 | 3261 | { |
c8f69686 | 3262 | char *channel_mode[] = {"UART", "FIFO", "CPU", "OPTO", "FT1284"}; |
f6ef2983 UB |
3263 | fprintf(stdout, "VID: 0x%04x\n",eeprom->vendor_id); |
3264 | fprintf(stdout, "PID: 0x%04x\n",eeprom->product_id); | |
38801bf8 | 3265 | fprintf(stdout, "Release: 0x%04x\n",release); |
f6ef2983 | 3266 | |
56ac0383 | 3267 | if (eeprom->self_powered) |
f6ef2983 UB |
3268 | fprintf(stdout, "Self-Powered%s", (eeprom->remote_wakeup)?", USB Remote Wake Up\n":"\n"); |
3269 | else | |
a7c32c59 | 3270 | fprintf(stdout, "Bus Powered: %3d mA%s", eeprom->max_power, |
f6ef2983 | 3271 | (eeprom->remote_wakeup)?" USB Remote Wake Up\n":"\n"); |
56ac0383 | 3272 | if (eeprom->manufacturer) |
f6ef2983 | 3273 | fprintf(stdout, "Manufacturer: %s\n",eeprom->manufacturer); |
56ac0383 | 3274 | if (eeprom->product) |
f6ef2983 | 3275 | fprintf(stdout, "Product: %s\n",eeprom->product); |
56ac0383 | 3276 | if (eeprom->serial) |
f6ef2983 | 3277 | fprintf(stdout, "Serial: %s\n",eeprom->serial); |
e107f509 | 3278 | fprintf(stdout, "Checksum : %04x\n", checksum); |
6cd4f922 UB |
3279 | if (ftdi->type == TYPE_R) |
3280 | fprintf(stdout, "Internal EEPROM\n"); | |
3281 | else if (eeprom->chip >= 0x46) | |
3282 | fprintf(stdout, "Attached EEPROM: 93x%02x\n", eeprom->chip); | |
56ac0383 TJ |
3283 | if (eeprom->suspend_dbus7) |
3284 | fprintf(stdout, "Suspend on DBUS7\n"); | |
3285 | if (eeprom->suspend_pull_downs) | |
fb9bfdd1 | 3286 | fprintf(stdout, "Pull IO pins low during suspend\n"); |
837a71d6 UB |
3287 | if(eeprom->powersave) |
3288 | { | |
3289 | if(ftdi->type >= TYPE_232H) | |
3290 | fprintf(stdout,"Enter low power state on ACBUS7\n"); | |
3291 | } | |
56ac0383 | 3292 | if (eeprom->remote_wakeup) |
fb9bfdd1 | 3293 | fprintf(stdout, "Enable Remote Wake Up\n"); |
802a949e | 3294 | fprintf(stdout, "PNP: %d\n",(eeprom->is_not_pnp)?0:1); |
db099ec5 | 3295 | if (ftdi->type >= TYPE_2232C) |
56ac0383 | 3296 | fprintf(stdout,"Channel A has Mode %s%s%s\n", |
e107f509 | 3297 | channel_mode[eeprom->channel_a_type], |
2cde7c52 UB |
3298 | (eeprom->channel_a_driver)?" VCP":"", |
3299 | (eeprom->high_current_a)?" High Current IO":""); | |
18199b76 UB |
3300 | if (ftdi->type >= TYPE_232H) |
3301 | { | |
3302 | fprintf(stdout,"FT1284 Mode Clock is idle %s, %s first, %sFlow Control\n", | |
3303 | (eeprom->clock_polarity)?"HIGH":"LOW", | |
3304 | (eeprom->data_order)?"LSB":"MSB", | |
3305 | (eeprom->flow_control)?"":"No "); | |
3306 | } | |
c7e4c09e | 3307 | if ((ftdi->type >= TYPE_2232C) && (ftdi->type != TYPE_R) && (ftdi->type != TYPE_232H)) |
56ac0383 | 3308 | fprintf(stdout,"Channel B has Mode %s%s%s\n", |
e107f509 | 3309 | channel_mode[eeprom->channel_b_type], |
2cde7c52 UB |
3310 | (eeprom->channel_b_driver)?" VCP":"", |
3311 | (eeprom->high_current_b)?" High Current IO":""); | |
caec1294 | 3312 | if (((ftdi->type == TYPE_BM) || (ftdi->type == TYPE_2232C)) && |
56ac0383 | 3313 | eeprom->use_usb_version == USE_USB_VERSION_BIT) |
caec1294 UB |
3314 | fprintf(stdout,"Use explicit USB Version %04x\n",eeprom->usb_version); |
3315 | ||
56ac0383 | 3316 | if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H)) |
db099ec5 UB |
3317 | { |
3318 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
3319 | (ftdi->type == TYPE_2232H)?"AL":"A", | |
3320 | (eeprom->group0_drive+1) *4, | |
3321 | (eeprom->group0_schmitt)?" Schmitt Input":"", | |
3322 | (eeprom->group0_slew)?" Slow Slew":""); | |
3323 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
3324 | (ftdi->type == TYPE_2232H)?"AH":"B", | |
3325 | (eeprom->group1_drive+1) *4, | |
3326 | (eeprom->group1_schmitt)?" Schmitt Input":"", | |
3327 | (eeprom->group1_slew)?" Slow Slew":""); | |
3328 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
3329 | (ftdi->type == TYPE_2232H)?"BL":"C", | |
3330 | (eeprom->group2_drive+1) *4, | |
3331 | (eeprom->group2_schmitt)?" Schmitt Input":"", | |
3332 | (eeprom->group2_slew)?" Slow Slew":""); | |
3333 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
3334 | (ftdi->type == TYPE_2232H)?"BH":"D", | |
3335 | (eeprom->group3_drive+1) *4, | |
3336 | (eeprom->group3_schmitt)?" Schmitt Input":"", | |
3337 | (eeprom->group3_slew)?" Slow Slew":""); | |
3338 | } | |
91d7a201 UB |
3339 | else if (ftdi->type == TYPE_232H) |
3340 | { | |
263d3ba0 UB |
3341 | int i; |
3342 | char *cbush_mux[] = {"TRISTATE","RXLED","TXLED", "TXRXLED","PWREN", | |
3343 | "SLEEP","DRIVE_0","DRIVE_1","IOMODE","TXDEN", | |
3344 | "CLK30","CLK15","CLK7_5" | |
3345 | }; | |
91d7a201 UB |
3346 | fprintf(stdout,"ACBUS has %d mA drive%s%s\n", |
3347 | (eeprom->group0_drive+1) *4, | |
3348 | (eeprom->group0_schmitt)?" Schmitt Input":"", | |
3349 | (eeprom->group0_slew)?" Slow Slew":""); | |
3350 | fprintf(stdout,"ADBUS has %d mA drive%s%s\n", | |
3351 | (eeprom->group1_drive+1) *4, | |
3352 | (eeprom->group1_schmitt)?" Schmitt Input":"", | |
3353 | (eeprom->group1_slew)?" Slow Slew":""); | |
263d3ba0 UB |
3354 | for (i=0; i<10; i++) |
3355 | { | |
3356 | if (eeprom->cbus_function[i]<= CBUSH_CLK7_5 ) | |
3357 | fprintf(stdout,"C%d Function: %s\n", i, | |
3358 | cbush_mux[eeprom->cbus_function[i]]); | |
3359 | } | |
91d7a201 UB |
3360 | } |
3361 | ||
a4980043 UB |
3362 | if (ftdi->type == TYPE_R) |
3363 | { | |
3364 | char *cbus_mux[] = {"TXDEN","PWREN","RXLED", "TXLED","TX+RXLED", | |
13f00d3c | 3365 | "SLEEP","CLK48","CLK24","CLK12","CLK6", |
56ac0383 TJ |
3366 | "IOMODE","BB_WR","BB_RD" |
3367 | }; | |
13f00d3c | 3368 | char *cbus_BB[] = {"RXF","TXE","RD", "WR"}; |
56ac0383 TJ |
3369 | |
3370 | if (eeprom->invert) | |
3371 | { | |
a4980043 UB |
3372 | char *r_bits[] = {"TXD","RXD","RTS", "CTS","DTR","DSR","DCD","RI"}; |
3373 | fprintf(stdout,"Inverted bits:"); | |
3374 | for (i=0; i<8; i++) | |
56ac0383 | 3375 | if ((eeprom->invert & (1<<i)) == (1<<i)) |
a4980043 UB |
3376 | fprintf(stdout," %s",r_bits[i]); |
3377 | fprintf(stdout,"\n"); | |
3378 | } | |
56ac0383 | 3379 | for (i=0; i<5; i++) |
a4980043 | 3380 | { |
56ac0383 | 3381 | if (eeprom->cbus_function[i]<CBUS_BB) |
a4980043 UB |
3382 | fprintf(stdout,"C%d Function: %s\n", i, |
3383 | cbus_mux[eeprom->cbus_function[i]]); | |
3384 | else | |
17431287 | 3385 | { |
598b2334 UB |
3386 | if (i < 4) |
3387 | /* Running MPROG show that C0..3 have fixed function Synchronous | |
3388 | Bit Bang mode */ | |
3389 | fprintf(stdout,"C%d BB Function: %s\n", i, | |
3390 | cbus_BB[i]); | |
3391 | else | |
3392 | fprintf(stdout, "Unknown CBUS mode. Might be special mode?\n"); | |
17431287 | 3393 | } |
a4980043 UB |
3394 | } |
3395 | } | |
f6ef2983 | 3396 | } |
4af1d1bb | 3397 | return 0; |
b56d5a64 MK |
3398 | } |
3399 | ||
1941414d | 3400 | /** |
44ef02bd UB |
3401 | Get a value from the decoded EEPROM structure |
3402 | ||
735e81ea TJ |
3403 | \param ftdi pointer to ftdi_context |
3404 | \param value_name Enum of the value to query | |
3405 | \param value Pointer to store read value | |
44ef02bd | 3406 | |
735e81ea TJ |
3407 | \retval 0: all fine |
3408 | \retval -1: Value doesn't exist | |
44ef02bd UB |
3409 | */ |
3410 | int ftdi_get_eeprom_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int* value) | |
3411 | { | |
3412 | switch (value_name) | |
3413 | { | |
56ac0383 TJ |
3414 | case VENDOR_ID: |
3415 | *value = ftdi->eeprom->vendor_id; | |
3416 | break; | |
3417 | case PRODUCT_ID: | |
3418 | *value = ftdi->eeprom->product_id; | |
3419 | break; | |
3420 | case SELF_POWERED: | |
3421 | *value = ftdi->eeprom->self_powered; | |
3422 | break; | |
3423 | case REMOTE_WAKEUP: | |
3424 | *value = ftdi->eeprom->remote_wakeup; | |
3425 | break; | |
3426 | case IS_NOT_PNP: | |
3427 | *value = ftdi->eeprom->is_not_pnp; | |
3428 | break; | |
3429 | case SUSPEND_DBUS7: | |
3430 | *value = ftdi->eeprom->suspend_dbus7; | |
3431 | break; | |
3432 | case IN_IS_ISOCHRONOUS: | |
3433 | *value = ftdi->eeprom->in_is_isochronous; | |
3434 | break; | |
cffed9f5 UB |
3435 | case OUT_IS_ISOCHRONOUS: |
3436 | *value = ftdi->eeprom->out_is_isochronous; | |
3437 | break; | |
56ac0383 TJ |
3438 | case SUSPEND_PULL_DOWNS: |
3439 | *value = ftdi->eeprom->suspend_pull_downs; | |
3440 | break; | |
3441 | case USE_SERIAL: | |
3442 | *value = ftdi->eeprom->use_serial; | |
3443 | break; | |
3444 | case USB_VERSION: | |
3445 | *value = ftdi->eeprom->usb_version; | |
3446 | break; | |
cffed9f5 UB |
3447 | case USE_USB_VERSION: |
3448 | *value = ftdi->eeprom->use_usb_version; | |
3449 | break; | |
56ac0383 TJ |
3450 | case MAX_POWER: |
3451 | *value = ftdi->eeprom->max_power; | |
3452 | break; | |
3453 | case CHANNEL_A_TYPE: | |
3454 | *value = ftdi->eeprom->channel_a_type; | |
3455 | break; | |
3456 | case CHANNEL_B_TYPE: | |
3457 | *value = ftdi->eeprom->channel_b_type; | |
3458 | break; | |
3459 | case CHANNEL_A_DRIVER: | |
3460 | *value = ftdi->eeprom->channel_a_driver; | |
3461 | break; | |
3462 | case CHANNEL_B_DRIVER: | |
3463 | *value = ftdi->eeprom->channel_b_driver; | |
3464 | break; | |
be4bae37 AL |
3465 | case CHANNEL_C_DRIVER: |
3466 | *value = ftdi->eeprom->channel_c_driver; | |
3467 | break; | |
3468 | case CHANNEL_D_DRIVER: | |
3469 | *value = ftdi->eeprom->channel_d_driver; | |
3470 | break; | |
3471 | case CHANNEL_A_RS485: | |
3472 | *value = ftdi->eeprom->channel_a_rs485enable; | |
3473 | break; | |
3474 | case CHANNEL_B_RS485: | |
3475 | *value = ftdi->eeprom->channel_b_rs485enable; | |
3476 | break; | |
3477 | case CHANNEL_C_RS485: | |
3478 | *value = ftdi->eeprom->channel_c_rs485enable; | |
3479 | break; | |
3480 | case CHANNEL_D_RS485: | |
3481 | *value = ftdi->eeprom->channel_d_rs485enable; | |
3482 | break; | |
56ac0383 TJ |
3483 | case CBUS_FUNCTION_0: |
3484 | *value = ftdi->eeprom->cbus_function[0]; | |
3485 | break; | |
3486 | case CBUS_FUNCTION_1: | |
3487 | *value = ftdi->eeprom->cbus_function[1]; | |
3488 | break; | |
3489 | case CBUS_FUNCTION_2: | |
3490 | *value = ftdi->eeprom->cbus_function[2]; | |
3491 | break; | |
3492 | case CBUS_FUNCTION_3: | |
3493 | *value = ftdi->eeprom->cbus_function[3]; | |
3494 | break; | |
3495 | case CBUS_FUNCTION_4: | |
3496 | *value = ftdi->eeprom->cbus_function[4]; | |
3497 | break; | |
263d3ba0 UB |
3498 | case CBUS_FUNCTION_5: |
3499 | *value = ftdi->eeprom->cbus_function[5]; | |
3500 | break; | |
3501 | case CBUS_FUNCTION_6: | |
3502 | *value = ftdi->eeprom->cbus_function[6]; | |
3503 | break; | |
3504 | case CBUS_FUNCTION_7: | |
3505 | *value = ftdi->eeprom->cbus_function[7]; | |
3506 | break; | |
3507 | case CBUS_FUNCTION_8: | |
3508 | *value = ftdi->eeprom->cbus_function[8]; | |
3509 | break; | |
3510 | case CBUS_FUNCTION_9: | |
3511 | *value = ftdi->eeprom->cbus_function[8]; | |
3512 | break; | |
56ac0383 TJ |
3513 | case HIGH_CURRENT: |
3514 | *value = ftdi->eeprom->high_current; | |
3515 | break; | |
3516 | case HIGH_CURRENT_A: | |
3517 | *value = ftdi->eeprom->high_current_a; | |
3518 | break; | |
3519 | case HIGH_CURRENT_B: | |
3520 | *value = ftdi->eeprom->high_current_b; | |
3521 | break; | |
3522 | case INVERT: | |
3523 | *value = ftdi->eeprom->invert; | |
3524 | break; | |
3525 | case GROUP0_DRIVE: | |
3526 | *value = ftdi->eeprom->group0_drive; | |
3527 | break; | |
3528 | case GROUP0_SCHMITT: | |
3529 | *value = ftdi->eeprom->group0_schmitt; | |
3530 | break; | |
3531 | case GROUP0_SLEW: | |
3532 | *value = ftdi->eeprom->group0_slew; | |
3533 | break; | |
3534 | case GROUP1_DRIVE: | |
3535 | *value = ftdi->eeprom->group1_drive; | |
3536 | break; | |
3537 | case GROUP1_SCHMITT: | |
3538 | *value = ftdi->eeprom->group1_schmitt; | |
3539 | break; | |
3540 | case GROUP1_SLEW: | |
3541 | *value = ftdi->eeprom->group1_slew; | |
3542 | break; | |
3543 | case GROUP2_DRIVE: | |
3544 | *value = ftdi->eeprom->group2_drive; | |
3545 | break; | |
3546 | case GROUP2_SCHMITT: | |
3547 | *value = ftdi->eeprom->group2_schmitt; | |
3548 | break; | |
3549 | case GROUP2_SLEW: | |
3550 | *value = ftdi->eeprom->group2_slew; | |
3551 | break; | |
3552 | case GROUP3_DRIVE: | |
3553 | *value = ftdi->eeprom->group3_drive; | |
3554 | break; | |
3555 | case GROUP3_SCHMITT: | |
3556 | *value = ftdi->eeprom->group3_schmitt; | |
3557 | break; | |
3558 | case GROUP3_SLEW: | |
3559 | *value = ftdi->eeprom->group3_slew; | |
3560 | break; | |
837a71d6 UB |
3561 | case POWER_SAVE: |
3562 | *value = ftdi->eeprom->powersave; | |
3563 | break; | |
18199b76 UB |
3564 | case CLOCK_POLARITY: |
3565 | *value = ftdi->eeprom->clock_polarity; | |
3566 | break; | |
3567 | case DATA_ORDER: | |
3568 | *value = ftdi->eeprom->data_order; | |
3569 | break; | |
3570 | case FLOW_CONTROL: | |
3571 | *value = ftdi->eeprom->flow_control; | |
3572 | break; | |
3573 | case CHIP_TYPE: | |
56ac0383 TJ |
3574 | *value = ftdi->eeprom->chip; |
3575 | break; | |
3576 | case CHIP_SIZE: | |
3577 | *value = ftdi->eeprom->size; | |
3578 | break; | |
3579 | default: | |
3580 | ftdi_error_return(-1, "Request for unknown EEPROM value"); | |
44ef02bd UB |
3581 | } |
3582 | return 0; | |
3583 | } | |
3584 | ||
3585 | /** | |
3586 | Set a value in the decoded EEPROM Structure | |
3587 | No parameter checking is performed | |
3588 | ||
735e81ea | 3589 | \param ftdi pointer to ftdi_context |
545f9df9 | 3590 | \param value_name Enum of the value to set |
735e81ea | 3591 | \param value to set |
44ef02bd | 3592 | |
735e81ea TJ |
3593 | \retval 0: all fine |
3594 | \retval -1: Value doesn't exist | |
3595 | \retval -2: Value not user settable | |
44ef02bd UB |
3596 | */ |
3597 | int ftdi_set_eeprom_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int value) | |
3598 | { | |
3599 | switch (value_name) | |
3600 | { | |
56ac0383 TJ |
3601 | case VENDOR_ID: |
3602 | ftdi->eeprom->vendor_id = value; | |
3603 | break; | |
3604 | case PRODUCT_ID: | |
3605 | ftdi->eeprom->product_id = value; | |
3606 | break; | |
3607 | case SELF_POWERED: | |
3608 | ftdi->eeprom->self_powered = value; | |
3609 | break; | |
3610 | case REMOTE_WAKEUP: | |
3611 | ftdi->eeprom->remote_wakeup = value; | |
3612 | break; | |
3613 | case IS_NOT_PNP: | |
3614 | ftdi->eeprom->is_not_pnp = value; | |
3615 | break; | |
3616 | case SUSPEND_DBUS7: | |
3617 | ftdi->eeprom->suspend_dbus7 = value; | |
3618 | break; | |
3619 | case IN_IS_ISOCHRONOUS: | |
3620 | ftdi->eeprom->in_is_isochronous = value; | |
3621 | break; | |
cffed9f5 UB |
3622 | case OUT_IS_ISOCHRONOUS: |
3623 | ftdi->eeprom->out_is_isochronous = value; | |
3624 | break; | |
56ac0383 TJ |
3625 | case SUSPEND_PULL_DOWNS: |
3626 | ftdi->eeprom->suspend_pull_downs = value; | |
3627 | break; | |
3628 | case USE_SERIAL: | |
3629 | ftdi->eeprom->use_serial = value; | |
3630 | break; | |
3631 | case USB_VERSION: | |
3632 | ftdi->eeprom->usb_version = value; | |
3633 | break; | |
cffed9f5 UB |
3634 | case USE_USB_VERSION: |
3635 | ftdi->eeprom->use_usb_version = value; | |
3636 | break; | |
56ac0383 TJ |
3637 | case MAX_POWER: |
3638 | ftdi->eeprom->max_power = value; | |
3639 | break; | |
3640 | case CHANNEL_A_TYPE: | |
3641 | ftdi->eeprom->channel_a_type = value; | |
3642 | break; | |
3643 | case CHANNEL_B_TYPE: | |
3644 | ftdi->eeprom->channel_b_type = value; | |
3645 | break; | |
3646 | case CHANNEL_A_DRIVER: | |
3647 | ftdi->eeprom->channel_a_driver = value; | |
3648 | break; | |
3649 | case CHANNEL_B_DRIVER: | |
3650 | ftdi->eeprom->channel_b_driver = value; | |
3651 | break; | |
be4bae37 AL |
3652 | case CHANNEL_C_DRIVER: |
3653 | ftdi->eeprom->channel_c_driver = value; | |
3654 | break; | |
3655 | case CHANNEL_D_DRIVER: | |
3656 | ftdi->eeprom->channel_d_driver = value; | |
3657 | break; | |
3658 | case CHANNEL_A_RS485: | |
3659 | ftdi->eeprom->channel_a_rs485enable = value; | |
3660 | break; | |
3661 | case CHANNEL_B_RS485: | |
3662 | ftdi->eeprom->channel_b_rs485enable = value; | |
3663 | break; | |
3664 | case CHANNEL_C_RS485: | |
3665 | ftdi->eeprom->channel_c_rs485enable = value; | |
3666 | break; | |
3667 | case CHANNEL_D_RS485: | |
3668 | ftdi->eeprom->channel_d_rs485enable = value; | |
3669 | break; | |
56ac0383 TJ |
3670 | case CBUS_FUNCTION_0: |
3671 | ftdi->eeprom->cbus_function[0] = value; | |
3672 | break; | |
3673 | case CBUS_FUNCTION_1: | |
3674 | ftdi->eeprom->cbus_function[1] = value; | |
3675 | break; | |
3676 | case CBUS_FUNCTION_2: | |
3677 | ftdi->eeprom->cbus_function[2] = value; | |
3678 | break; | |
3679 | case CBUS_FUNCTION_3: | |
3680 | ftdi->eeprom->cbus_function[3] = value; | |
3681 | break; | |
3682 | case CBUS_FUNCTION_4: | |
3683 | ftdi->eeprom->cbus_function[4] = value; | |
3684 | break; | |
263d3ba0 UB |
3685 | case CBUS_FUNCTION_5: |
3686 | ftdi->eeprom->cbus_function[5] = value; | |
3687 | break; | |
3688 | case CBUS_FUNCTION_6: | |
3689 | ftdi->eeprom->cbus_function[6] = value; | |
3690 | break; | |
3691 | case CBUS_FUNCTION_7: | |
3692 | ftdi->eeprom->cbus_function[7] = value; | |
3693 | break; | |
3694 | case CBUS_FUNCTION_8: | |
3695 | ftdi->eeprom->cbus_function[8] = value; | |
3696 | break; | |
3697 | case CBUS_FUNCTION_9: | |
3698 | ftdi->eeprom->cbus_function[9] = value; | |
3699 | break; | |
56ac0383 TJ |
3700 | case HIGH_CURRENT: |
3701 | ftdi->eeprom->high_current = value; | |
3702 | break; | |
3703 | case HIGH_CURRENT_A: | |
3704 | ftdi->eeprom->high_current_a = value; | |
3705 | break; | |
3706 | case HIGH_CURRENT_B: | |
3707 | ftdi->eeprom->high_current_b = value; | |
3708 | break; | |
3709 | case INVERT: | |
3710 | ftdi->eeprom->invert = value; | |
3711 | break; | |
3712 | case GROUP0_DRIVE: | |
3713 | ftdi->eeprom->group0_drive = value; | |
3714 | break; | |
3715 | case GROUP0_SCHMITT: | |
3716 | ftdi->eeprom->group0_schmitt = value; | |
3717 | break; | |
3718 | case GROUP0_SLEW: | |
3719 | ftdi->eeprom->group0_slew = value; | |
3720 | break; | |
3721 | case GROUP1_DRIVE: | |
3722 | ftdi->eeprom->group1_drive = value; | |
3723 | break; | |
3724 | case GROUP1_SCHMITT: | |
3725 | ftdi->eeprom->group1_schmitt = value; | |
3726 | break; | |
3727 | case GROUP1_SLEW: | |
3728 | ftdi->eeprom->group1_slew = value; | |
3729 | break; | |
3730 | case GROUP2_DRIVE: | |
3731 | ftdi->eeprom->group2_drive = value; | |
3732 | break; | |
3733 | case GROUP2_SCHMITT: | |
3734 | ftdi->eeprom->group2_schmitt = value; | |
3735 | break; | |
3736 | case GROUP2_SLEW: | |
3737 | ftdi->eeprom->group2_slew = value; | |
3738 | break; | |
3739 | case GROUP3_DRIVE: | |
3740 | ftdi->eeprom->group3_drive = value; | |
3741 | break; | |
3742 | case GROUP3_SCHMITT: | |
3743 | ftdi->eeprom->group3_schmitt = value; | |
3744 | break; | |
3745 | case GROUP3_SLEW: | |
3746 | ftdi->eeprom->group3_slew = value; | |
3747 | break; | |
3748 | case CHIP_TYPE: | |
3749 | ftdi->eeprom->chip = value; | |
3750 | break; | |
837a71d6 UB |
3751 | case POWER_SAVE: |
3752 | ftdi->eeprom->powersave = value; | |
3753 | break; | |
18199b76 UB |
3754 | case CLOCK_POLARITY: |
3755 | ftdi->eeprom->clock_polarity = value; | |
3756 | break; | |
3757 | case DATA_ORDER: | |
3758 | ftdi->eeprom->data_order = value; | |
3759 | break; | |
3760 | case FLOW_CONTROL: | |
3761 | ftdi->eeprom->flow_control = value; | |
3762 | break; | |
56ac0383 TJ |
3763 | case CHIP_SIZE: |
3764 | ftdi_error_return(-2, "EEPROM Value can't be changed"); | |
3765 | default : | |
3766 | ftdi_error_return(-1, "Request to unknown EEPROM value"); | |
44ef02bd UB |
3767 | } |
3768 | return 0; | |
3769 | } | |
3770 | ||
3771 | /** Get the read-only buffer to the binary EEPROM content | |
3772 | ||
3773 | \param ftdi pointer to ftdi_context | |
735e81ea | 3774 | \param buf buffer to receive EEPROM content |
44ef02bd UB |
3775 | \param size Size of receiving buffer |
3776 | ||
3777 | \retval 0: All fine | |
3778 | \retval -1: struct ftdi_contxt or ftdi_eeprom missing | |
200bd3ed | 3779 | \retval -2: Not enough room to store eeprom |
44ef02bd | 3780 | */ |
56ac0383 TJ |
3781 | int ftdi_get_eeprom_buf(struct ftdi_context *ftdi, unsigned char * buf, int size) |
3782 | { | |
3783 | if (!ftdi || !(ftdi->eeprom)) | |
3784 | ftdi_error_return(-1, "No appropriate structure"); | |
b95e4654 | 3785 | |
200bd3ed TJ |
3786 | if (!buf || size < ftdi->eeprom->size) |
3787 | ftdi_error_return(-1, "Not enough room to store eeprom"); | |
3788 | ||
b95e4654 TJ |
3789 | // Only copy up to FTDI_MAX_EEPROM_SIZE bytes |
3790 | if (size > FTDI_MAX_EEPROM_SIZE) | |
3791 | size = FTDI_MAX_EEPROM_SIZE; | |
3792 | ||
56ac0383 | 3793 | memcpy(buf, ftdi->eeprom->buf, size); |
b95e4654 | 3794 | |
56ac0383 TJ |
3795 | return 0; |
3796 | } | |
44ef02bd | 3797 | |
672fd368 UB |
3798 | /** Set the EEPROM content from the user-supplied prefilled buffer |
3799 | ||
3800 | \param ftdi pointer to ftdi_context | |
3801 | \param buf buffer to read EEPROM content | |
3802 | \param size Size of buffer | |
3803 | ||
3804 | \retval 0: All fine | |
3805 | \retval -1: struct ftdi_contxt or ftdi_eeprom of buf missing | |
3806 | */ | |
3807 | int ftdi_set_eeprom_buf(struct ftdi_context *ftdi, const unsigned char * buf, int size) | |
3808 | { | |
3809 | if (!ftdi || !(ftdi->eeprom) || !buf) | |
3810 | ftdi_error_return(-1, "No appropriate structure"); | |
3811 | ||
3812 | // Only copy up to FTDI_MAX_EEPROM_SIZE bytes | |
3813 | if (size > FTDI_MAX_EEPROM_SIZE) | |
3814 | size = FTDI_MAX_EEPROM_SIZE; | |
3815 | ||
3816 | memcpy(ftdi->eeprom->buf, buf, size); | |
3817 | ||
3818 | return 0; | |
3819 | } | |
3820 | ||
44ef02bd | 3821 | /** |
c1c70e13 OS |
3822 | Read eeprom location |
3823 | ||
3824 | \param ftdi pointer to ftdi_context | |
3825 | \param eeprom_addr Address of eeprom location to be read | |
3826 | \param eeprom_val Pointer to store read eeprom location | |
3827 | ||
3828 | \retval 0: all fine | |
3829 | \retval -1: read failed | |
22a1b5c1 | 3830 | \retval -2: USB device unavailable |
c1c70e13 OS |
3831 | */ |
3832 | int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short *eeprom_val) | |
3833 | { | |
22a1b5c1 TJ |
3834 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3835 | ftdi_error_return(-2, "USB device unavailable"); | |
3836 | ||
97c6b5f6 | 3837 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (unsigned char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2) |
c1c70e13 OS |
3838 | ftdi_error_return(-1, "reading eeprom failed"); |
3839 | ||
3840 | return 0; | |
3841 | } | |
3842 | ||
3843 | /** | |
1941414d TJ |
3844 | Read eeprom |
3845 | ||
3846 | \param ftdi pointer to ftdi_context | |
b8aa7b35 | 3847 | |
1941414d TJ |
3848 | \retval 0: all fine |
3849 | \retval -1: read failed | |
22a1b5c1 | 3850 | \retval -2: USB device unavailable |
1941414d | 3851 | */ |
a35aa9bd | 3852 | int ftdi_read_eeprom(struct ftdi_context *ftdi) |
a8f46ddc | 3853 | { |
a3da1d95 | 3854 | int i; |
a35aa9bd | 3855 | unsigned char *buf; |
a3da1d95 | 3856 | |
22a1b5c1 TJ |
3857 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3858 | ftdi_error_return(-2, "USB device unavailable"); | |
a35aa9bd | 3859 | buf = ftdi->eeprom->buf; |
22a1b5c1 | 3860 | |
2d543486 | 3861 | for (i = 0; i < FTDI_MAX_EEPROM_SIZE/2; i++) |
22d12cda | 3862 | { |
a35aa9bd | 3863 | if (libusb_control_transfer( |
56ac0383 TJ |
3864 | ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE,SIO_READ_EEPROM_REQUEST, 0, i, |
3865 | buf+(i*2), 2, ftdi->usb_read_timeout) != 2) | |
c3d95b87 | 3866 | ftdi_error_return(-1, "reading eeprom failed"); |
a3da1d95 GE |
3867 | } |
3868 | ||
2d543486 | 3869 | if (ftdi->type == TYPE_R) |
a35aa9bd | 3870 | ftdi->eeprom->size = 0x80; |
56ac0383 | 3871 | /* Guesses size of eeprom by comparing halves |
2d543486 | 3872 | - will not work with blank eeprom */ |
a35aa9bd | 3873 | else if (strrchr((const char *)buf, 0xff) == ((const char *)buf +FTDI_MAX_EEPROM_SIZE -1)) |
2d543486 | 3874 | ftdi->eeprom->size = -1; |
56ac0383 | 3875 | else if (memcmp(buf,&buf[0x80],0x80) == 0) |
2d543486 | 3876 | ftdi->eeprom->size = 0x80; |
56ac0383 | 3877 | else if (memcmp(buf,&buf[0x40],0x40) == 0) |
2d543486 UB |
3878 | ftdi->eeprom->size = 0x40; |
3879 | else | |
3880 | ftdi->eeprom->size = 0x100; | |
a3da1d95 GE |
3881 | return 0; |
3882 | } | |
3883 | ||
cb6250fa TJ |
3884 | /* |
3885 | ftdi_read_chipid_shift does the bitshift operation needed for the FTDIChip-ID | |
3886 | Function is only used internally | |
3887 | \internal | |
3888 | */ | |
3889 | static unsigned char ftdi_read_chipid_shift(unsigned char value) | |
3890 | { | |
3891 | return ((value & 1) << 1) | | |
22d12cda TJ |
3892 | ((value & 2) << 5) | |
3893 | ((value & 4) >> 2) | | |
3894 | ((value & 8) << 4) | | |
3895 | ((value & 16) >> 1) | | |
3896 | ((value & 32) >> 1) | | |
3897 | ((value & 64) >> 4) | | |
3898 | ((value & 128) >> 2); | |
cb6250fa TJ |
3899 | } |
3900 | ||
3901 | /** | |
3902 | Read the FTDIChip-ID from R-type devices | |
3903 | ||
3904 | \param ftdi pointer to ftdi_context | |
3905 | \param chipid Pointer to store FTDIChip-ID | |
3906 | ||
3907 | \retval 0: all fine | |
3908 | \retval -1: read failed | |
22a1b5c1 | 3909 | \retval -2: USB device unavailable |
cb6250fa TJ |
3910 | */ |
3911 | int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid) | |
3912 | { | |
c7eb3112 | 3913 | unsigned int a = 0, b = 0; |
cb6250fa | 3914 | |
22a1b5c1 TJ |
3915 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3916 | ftdi_error_return(-2, "USB device unavailable"); | |
3917 | ||
579b006f | 3918 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, 0x43, (unsigned char *)&a, 2, ftdi->usb_read_timeout) == 2) |
cb6250fa TJ |
3919 | { |
3920 | a = a << 8 | a >> 8; | |
579b006f | 3921 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, 0x44, (unsigned char *)&b, 2, ftdi->usb_read_timeout) == 2) |
cb6250fa TJ |
3922 | { |
3923 | b = b << 8 | b >> 8; | |
5230676f | 3924 | a = (a << 16) | (b & 0xFFFF); |
912d50ca TJ |
3925 | a = ftdi_read_chipid_shift(a) | ftdi_read_chipid_shift(a>>8)<<8 |
3926 | | ftdi_read_chipid_shift(a>>16)<<16 | ftdi_read_chipid_shift(a>>24)<<24; | |
cb6250fa | 3927 | *chipid = a ^ 0xa5f0f7d1; |
c7eb3112 | 3928 | return 0; |
cb6250fa TJ |
3929 | } |
3930 | } | |
3931 | ||
c7eb3112 | 3932 | ftdi_error_return(-1, "read of FTDIChip-ID failed"); |
cb6250fa TJ |
3933 | } |
3934 | ||
1941414d | 3935 | /** |
c1c70e13 OS |
3936 | Write eeprom location |
3937 | ||
3938 | \param ftdi pointer to ftdi_context | |
3939 | \param eeprom_addr Address of eeprom location to be written | |
3940 | \param eeprom_val Value to be written | |
3941 | ||
3942 | \retval 0: all fine | |
a661e3e4 | 3943 | \retval -1: write failed |
22a1b5c1 | 3944 | \retval -2: USB device unavailable |
a661e3e4 UB |
3945 | \retval -3: Invalid access to checksum protected area below 0x80 |
3946 | \retval -4: Device can't access unprotected area | |
3947 | \retval -5: Reading chip type failed | |
c1c70e13 | 3948 | */ |
56ac0383 | 3949 | int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, |
a661e3e4 | 3950 | unsigned short eeprom_val) |
c1c70e13 | 3951 | { |
a661e3e4 UB |
3952 | int chip_type_location; |
3953 | unsigned short chip_type; | |
3954 | ||
22a1b5c1 TJ |
3955 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3956 | ftdi_error_return(-2, "USB device unavailable"); | |
3957 | ||
56ac0383 | 3958 | if (eeprom_addr <0x80) |
a661e3e4 UB |
3959 | ftdi_error_return(-2, "Invalid access to checksum protected area below 0x80"); |
3960 | ||
3961 | ||
3962 | switch (ftdi->type) | |
3963 | { | |
56ac0383 TJ |
3964 | case TYPE_BM: |
3965 | case TYPE_2232C: | |
3966 | chip_type_location = 0x14; | |
3967 | break; | |
3968 | case TYPE_2232H: | |
3969 | case TYPE_4232H: | |
3970 | chip_type_location = 0x18; | |
3971 | break; | |
c7e4c09e UB |
3972 | case TYPE_232H: |
3973 | chip_type_location = 0x1e; | |
3974 | break; | |
56ac0383 TJ |
3975 | default: |
3976 | ftdi_error_return(-4, "Device can't access unprotected area"); | |
a661e3e4 UB |
3977 | } |
3978 | ||
56ac0383 | 3979 | if (ftdi_read_eeprom_location( ftdi, chip_type_location>>1, &chip_type)) |
a661e3e4 | 3980 | ftdi_error_return(-5, "Reading failed failed"); |
56ac0383 TJ |
3981 | fprintf(stderr," loc 0x%04x val 0x%04x\n", chip_type_location,chip_type); |
3982 | if ((chip_type & 0xff) != 0x66) | |
a661e3e4 UB |
3983 | { |
3984 | ftdi_error_return(-6, "EEPROM is not of 93x66"); | |
3985 | } | |
3986 | ||
579b006f | 3987 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
56ac0383 TJ |
3988 | SIO_WRITE_EEPROM_REQUEST, eeprom_val, eeprom_addr, |
3989 | NULL, 0, ftdi->usb_write_timeout) != 0) | |
c1c70e13 OS |
3990 | ftdi_error_return(-1, "unable to write eeprom"); |
3991 | ||
3992 | return 0; | |
3993 | } | |
3994 | ||
3995 | /** | |
1941414d | 3996 | Write eeprom |
a3da1d95 | 3997 | |
1941414d | 3998 | \param ftdi pointer to ftdi_context |
56ac0383 | 3999 | |
1941414d TJ |
4000 | \retval 0: all fine |
4001 | \retval -1: read failed | |
22a1b5c1 | 4002 | \retval -2: USB device unavailable |
44f41f11 | 4003 | \retval -3: EEPROM not initialized for the connected device; |
1941414d | 4004 | */ |
a35aa9bd | 4005 | int ftdi_write_eeprom(struct ftdi_context *ftdi) |
a8f46ddc | 4006 | { |
ba5329be | 4007 | unsigned short usb_val, status; |
e30da501 | 4008 | int i, ret; |
a35aa9bd | 4009 | unsigned char *eeprom; |
a3da1d95 | 4010 | |
22a1b5c1 TJ |
4011 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
4012 | ftdi_error_return(-2, "USB device unavailable"); | |
44f41f11 UB |
4013 | |
4014 | if(ftdi->eeprom->initialized_for_connected_device == 0) | |
4015 | ftdi_error_return(-3, "EEPROM not initialized for the connected device"); | |
4016 | ||
a35aa9bd | 4017 | eeprom = ftdi->eeprom->buf; |
22a1b5c1 | 4018 | |
ba5329be | 4019 | /* These commands were traced while running MProg */ |
e30da501 TJ |
4020 | if ((ret = ftdi_usb_reset(ftdi)) != 0) |
4021 | return ret; | |
4022 | if ((ret = ftdi_poll_modem_status(ftdi, &status)) != 0) | |
4023 | return ret; | |
4024 | if ((ret = ftdi_set_latency_timer(ftdi, 0x77)) != 0) | |
4025 | return ret; | |
ba5329be | 4026 | |
c0a96aed | 4027 | for (i = 0; i < ftdi->eeprom->size/2; i++) |
22d12cda | 4028 | { |
d9f0cce7 TJ |
4029 | usb_val = eeprom[i*2]; |
4030 | usb_val += eeprom[(i*2)+1] << 8; | |
579b006f JZ |
4031 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
4032 | SIO_WRITE_EEPROM_REQUEST, usb_val, i, | |
4033 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 | 4034 | ftdi_error_return(-1, "unable to write eeprom"); |
a3da1d95 GE |
4035 | } |
4036 | ||
4037 | return 0; | |
4038 | } | |
4039 | ||
1941414d TJ |
4040 | /** |
4041 | Erase eeprom | |
a3da1d95 | 4042 | |
a5e1bd8c MK |
4043 | This is not supported on FT232R/FT245R according to the MProg manual from FTDI. |
4044 | ||
1941414d TJ |
4045 | \param ftdi pointer to ftdi_context |
4046 | ||
4047 | \retval 0: all fine | |
4048 | \retval -1: erase failed | |
22a1b5c1 | 4049 | \retval -2: USB device unavailable |
99404ad5 UB |
4050 | \retval -3: Writing magic failed |
4051 | \retval -4: Read EEPROM failed | |
4052 | \retval -5: Unexpected EEPROM value | |
1941414d | 4053 | */ |
99404ad5 | 4054 | #define MAGIC 0x55aa |
a8f46ddc TJ |
4055 | int ftdi_erase_eeprom(struct ftdi_context *ftdi) |
4056 | { | |
99404ad5 | 4057 | unsigned short eeprom_value; |
22a1b5c1 TJ |
4058 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
4059 | ftdi_error_return(-2, "USB device unavailable"); | |
4060 | ||
56ac0383 | 4061 | if (ftdi->type == TYPE_R) |
99404ad5 UB |
4062 | { |
4063 | ftdi->eeprom->chip = 0; | |
4064 | return 0; | |
4065 | } | |
4066 | ||
56ac0383 | 4067 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, |
99404ad5 | 4068 | 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0) |
c3d95b87 | 4069 | ftdi_error_return(-1, "unable to erase eeprom"); |
a3da1d95 | 4070 | |
56ac0383 | 4071 | |
99404ad5 UB |
4072 | /* detect chip type by writing 0x55AA as magic at word position 0xc0 |
4073 | Chip is 93x46 if magic is read at word position 0x00, as wraparound happens around 0x40 | |
4074 | Chip is 93x56 if magic is read at word position 0x40, as wraparound happens around 0x80 | |
4075 | Chip is 93x66 if magic is only read at word position 0xc0*/ | |
10186c1f | 4076 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
56ac0383 TJ |
4077 | SIO_WRITE_EEPROM_REQUEST, MAGIC, 0xc0, |
4078 | NULL, 0, ftdi->usb_write_timeout) != 0) | |
99404ad5 | 4079 | ftdi_error_return(-3, "Writing magic failed"); |
56ac0383 | 4080 | if (ftdi_read_eeprom_location( ftdi, 0x00, &eeprom_value)) |
99404ad5 | 4081 | ftdi_error_return(-4, "Reading failed failed"); |
56ac0383 | 4082 | if (eeprom_value == MAGIC) |
99404ad5 UB |
4083 | { |
4084 | ftdi->eeprom->chip = 0x46; | |
4085 | } | |
56ac0383 | 4086 | else |
99404ad5 | 4087 | { |
56ac0383 | 4088 | if (ftdi_read_eeprom_location( ftdi, 0x40, &eeprom_value)) |
99404ad5 | 4089 | ftdi_error_return(-4, "Reading failed failed"); |
56ac0383 | 4090 | if (eeprom_value == MAGIC) |
99404ad5 | 4091 | ftdi->eeprom->chip = 0x56; |
56ac0383 | 4092 | else |
99404ad5 | 4093 | { |
56ac0383 | 4094 | if (ftdi_read_eeprom_location( ftdi, 0xc0, &eeprom_value)) |
99404ad5 | 4095 | ftdi_error_return(-4, "Reading failed failed"); |
56ac0383 | 4096 | if (eeprom_value == MAGIC) |
99404ad5 UB |
4097 | ftdi->eeprom->chip = 0x66; |
4098 | else | |
4099 | { | |
4100 | ftdi->eeprom->chip = -1; | |
4101 | } | |
4102 | } | |
4103 | } | |
56ac0383 | 4104 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, |
99404ad5 UB |
4105 | 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0) |
4106 | ftdi_error_return(-1, "unable to erase eeprom"); | |
a3da1d95 GE |
4107 | return 0; |
4108 | } | |
c3d95b87 | 4109 | |
1941414d TJ |
4110 | /** |
4111 | Get string representation for last error code | |
c3d95b87 | 4112 | |
1941414d TJ |
4113 | \param ftdi pointer to ftdi_context |
4114 | ||
4115 | \retval Pointer to error string | |
4116 | */ | |
c3d95b87 TJ |
4117 | char *ftdi_get_error_string (struct ftdi_context *ftdi) |
4118 | { | |
22a1b5c1 TJ |
4119 | if (ftdi == NULL) |
4120 | return ""; | |
4121 | ||
c3d95b87 TJ |
4122 | return ftdi->error_str; |
4123 | } | |
a01d31e2 | 4124 | |
b5ec1820 | 4125 | /* @} end of doxygen libftdi group */ |