Commit | Line | Data |
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a3da1d95 GE |
1 | /*************************************************************************** |
2 | ftdi.c - description | |
3 | ------------------- | |
4 | begin : Fri Apr 4 2003 | |
22a1b5c1 | 5 | copyright : (C) 2003-2010 by Intra2net AG |
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 | |
98452d97 | 37 | #include "ftdi.h" |
a3da1d95 | 38 | |
21abaf2e | 39 | #define ftdi_error_return(code, str) do { \ |
2f73e59f | 40 | ftdi->error_str = str; \ |
21abaf2e | 41 | return code; \ |
d2f10023 | 42 | } while(0); |
c3d95b87 | 43 | |
99650502 UB |
44 | #define ftdi_error_return_free_device_list(code, str, devs) do { \ |
45 | libusb_free_device_list(devs,1); \ | |
46 | ftdi->error_str = str; \ | |
47 | return code; \ | |
48 | } while(0); | |
49 | ||
418aaa72 | 50 | |
f3f81007 TJ |
51 | /** |
52 | Internal function to close usb device pointer. | |
53 | Sets ftdi->usb_dev to NULL. | |
54 | \internal | |
55 | ||
56 | \param ftdi pointer to ftdi_context | |
57 | ||
579b006f | 58 | \retval none |
f3f81007 | 59 | */ |
579b006f | 60 | static void ftdi_usb_close_internal (struct ftdi_context *ftdi) |
dff4fdb0 | 61 | { |
22a1b5c1 | 62 | if (ftdi && ftdi->usb_dev) |
dff4fdb0 | 63 | { |
579b006f | 64 | libusb_close (ftdi->usb_dev); |
dff4fdb0 NF |
65 | ftdi->usb_dev = NULL; |
66 | } | |
dff4fdb0 | 67 | } |
c3d95b87 | 68 | |
1941414d TJ |
69 | /** |
70 | Initializes a ftdi_context. | |
4837f98a | 71 | |
1941414d | 72 | \param ftdi pointer to ftdi_context |
4837f98a | 73 | |
1941414d TJ |
74 | \retval 0: all fine |
75 | \retval -1: couldn't allocate read buffer | |
a35aa9bd | 76 | \retval -2: couldn't allocate struct buffer |
1941414d TJ |
77 | |
78 | \remark This should be called before all functions | |
948f9ada | 79 | */ |
a8f46ddc TJ |
80 | int ftdi_init(struct ftdi_context *ftdi) |
81 | { | |
a35aa9bd | 82 | struct ftdi_eeprom* eeprom = (struct ftdi_eeprom *)malloc(sizeof(struct ftdi_eeprom)); |
02212d8e | 83 | ftdi->usb_ctx = NULL; |
98452d97 | 84 | ftdi->usb_dev = NULL; |
545820ce TJ |
85 | ftdi->usb_read_timeout = 5000; |
86 | ftdi->usb_write_timeout = 5000; | |
a3da1d95 | 87 | |
53ad271d | 88 | ftdi->type = TYPE_BM; /* chip type */ |
a3da1d95 | 89 | ftdi->baudrate = -1; |
418aaa72 | 90 | ftdi->bitbang_enabled = 0; /* 0: normal mode 1: any of the bitbang modes enabled */ |
a3da1d95 | 91 | |
948f9ada TJ |
92 | ftdi->readbuffer = NULL; |
93 | ftdi->readbuffer_offset = 0; | |
94 | ftdi->readbuffer_remaining = 0; | |
95 | ftdi->writebuffer_chunksize = 4096; | |
e2f12a4f | 96 | ftdi->max_packet_size = 0; |
948f9ada | 97 | |
545820ce TJ |
98 | ftdi->interface = 0; |
99 | ftdi->index = 0; | |
100 | ftdi->in_ep = 0x02; | |
101 | ftdi->out_ep = 0x81; | |
418aaa72 | 102 | ftdi->bitbang_mode = 1; /* when bitbang is enabled this holds the number of the mode */ |
53ad271d | 103 | |
a3da1d95 GE |
104 | ftdi->error_str = NULL; |
105 | ||
a35aa9bd UB |
106 | if (eeprom == 0) |
107 | ftdi_error_return(-2, "Can't malloc struct ftdi_eeprom"); | |
b4d19dea | 108 | memset(eeprom, 0, sizeof(struct ftdi_eeprom)); |
a35aa9bd | 109 | ftdi->eeprom = eeprom; |
c201f80f | 110 | |
1c733d33 TJ |
111 | /* All fine. Now allocate the readbuffer */ |
112 | return ftdi_read_data_set_chunksize(ftdi, 4096); | |
948f9ada | 113 | } |
4837f98a | 114 | |
1941414d | 115 | /** |
cef378aa TJ |
116 | Allocate and initialize a new ftdi_context |
117 | ||
118 | \return a pointer to a new ftdi_context, or NULL on failure | |
119 | */ | |
672ac008 | 120 | struct ftdi_context *ftdi_new(void) |
cef378aa TJ |
121 | { |
122 | struct ftdi_context * ftdi = (struct ftdi_context *)malloc(sizeof(struct ftdi_context)); | |
123 | ||
22d12cda TJ |
124 | if (ftdi == NULL) |
125 | { | |
cef378aa TJ |
126 | return NULL; |
127 | } | |
128 | ||
22d12cda TJ |
129 | if (ftdi_init(ftdi) != 0) |
130 | { | |
cef378aa | 131 | free(ftdi); |
cdf448f6 | 132 | return NULL; |
cef378aa TJ |
133 | } |
134 | ||
135 | return ftdi; | |
136 | } | |
137 | ||
138 | /** | |
1941414d TJ |
139 | Open selected channels on a chip, otherwise use first channel. |
140 | ||
141 | \param ftdi pointer to ftdi_context | |
f9d69895 | 142 | \param interface Interface to use for FT2232C/2232H/4232H chips. |
1941414d TJ |
143 | |
144 | \retval 0: all fine | |
145 | \retval -1: unknown interface | |
22a1b5c1 | 146 | \retval -2: USB device unavailable |
c4446c36 | 147 | */ |
0ce2f5fa | 148 | int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface) |
c4446c36 | 149 | { |
1971c26d | 150 | if (ftdi == NULL) |
22a1b5c1 TJ |
151 | ftdi_error_return(-2, "USB device unavailable"); |
152 | ||
22d12cda TJ |
153 | switch (interface) |
154 | { | |
155 | case INTERFACE_ANY: | |
156 | case INTERFACE_A: | |
157 | /* ftdi_usb_open_desc cares to set the right index, depending on the found chip */ | |
158 | break; | |
159 | case INTERFACE_B: | |
160 | ftdi->interface = 1; | |
161 | ftdi->index = INTERFACE_B; | |
162 | ftdi->in_ep = 0x04; | |
163 | ftdi->out_ep = 0x83; | |
164 | break; | |
f9d69895 AH |
165 | case INTERFACE_C: |
166 | ftdi->interface = 2; | |
167 | ftdi->index = INTERFACE_C; | |
168 | ftdi->in_ep = 0x06; | |
169 | ftdi->out_ep = 0x85; | |
170 | break; | |
171 | case INTERFACE_D: | |
172 | ftdi->interface = 3; | |
173 | ftdi->index = INTERFACE_D; | |
174 | ftdi->in_ep = 0x08; | |
175 | ftdi->out_ep = 0x87; | |
176 | break; | |
22d12cda TJ |
177 | default: |
178 | ftdi_error_return(-1, "Unknown interface"); | |
c4446c36 TJ |
179 | } |
180 | return 0; | |
181 | } | |
948f9ada | 182 | |
1941414d TJ |
183 | /** |
184 | Deinitializes a ftdi_context. | |
4837f98a | 185 | |
1941414d | 186 | \param ftdi pointer to ftdi_context |
4837f98a | 187 | */ |
a8f46ddc TJ |
188 | void ftdi_deinit(struct ftdi_context *ftdi) |
189 | { | |
22a1b5c1 TJ |
190 | if (ftdi == NULL) |
191 | return; | |
192 | ||
f3f81007 | 193 | ftdi_usb_close_internal (ftdi); |
dff4fdb0 | 194 | |
22d12cda TJ |
195 | if (ftdi->readbuffer != NULL) |
196 | { | |
d9f0cce7 TJ |
197 | free(ftdi->readbuffer); |
198 | ftdi->readbuffer = NULL; | |
948f9ada | 199 | } |
a35aa9bd UB |
200 | |
201 | if (ftdi->eeprom != NULL) | |
202 | { | |
74e8e79d UB |
203 | if (ftdi->eeprom->manufacturer != 0) |
204 | { | |
205 | free(ftdi->eeprom->manufacturer); | |
206 | ftdi->eeprom->manufacturer = 0; | |
207 | } | |
208 | if (ftdi->eeprom->product != 0) | |
209 | { | |
210 | free(ftdi->eeprom->product); | |
211 | ftdi->eeprom->product = 0; | |
212 | } | |
213 | if (ftdi->eeprom->serial != 0) | |
214 | { | |
215 | free(ftdi->eeprom->serial); | |
216 | ftdi->eeprom->serial = 0; | |
217 | } | |
a35aa9bd UB |
218 | free(ftdi->eeprom); |
219 | ftdi->eeprom = NULL; | |
220 | } | |
02212d8e | 221 | libusb_exit(ftdi->usb_ctx); |
a3da1d95 GE |
222 | } |
223 | ||
1941414d | 224 | /** |
cef378aa TJ |
225 | Deinitialize and free an ftdi_context. |
226 | ||
227 | \param ftdi pointer to ftdi_context | |
228 | */ | |
229 | void ftdi_free(struct ftdi_context *ftdi) | |
230 | { | |
231 | ftdi_deinit(ftdi); | |
232 | free(ftdi); | |
233 | } | |
234 | ||
235 | /** | |
1941414d TJ |
236 | Use an already open libusb device. |
237 | ||
238 | \param ftdi pointer to ftdi_context | |
579b006f | 239 | \param usb libusb libusb_device_handle to use |
4837f98a | 240 | */ |
579b006f | 241 | void ftdi_set_usbdev (struct ftdi_context *ftdi, libusb_device_handle *usb) |
a8f46ddc | 242 | { |
22a1b5c1 TJ |
243 | if (ftdi == NULL) |
244 | return; | |
245 | ||
98452d97 TJ |
246 | ftdi->usb_dev = usb; |
247 | } | |
248 | ||
249 | ||
1941414d TJ |
250 | /** |
251 | Finds all ftdi devices on the usb bus. Creates a new ftdi_device_list which | |
252 | needs to be deallocated by ftdi_list_free() after use. | |
253 | ||
254 | \param ftdi pointer to ftdi_context | |
255 | \param devlist Pointer where to store list of found devices | |
256 | \param vendor Vendor ID to search for | |
257 | \param product Product ID to search for | |
edb82cbf | 258 | |
1941414d | 259 | \retval >0: number of devices found |
1941414d | 260 | \retval -3: out of memory |
579b006f JZ |
261 | \retval -4: libusb_init() failed |
262 | \retval -5: libusb_get_device_list() failed | |
263 | \retval -6: libusb_get_device_descriptor() failed | |
edb82cbf | 264 | */ |
d2f10023 | 265 | int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist, int vendor, int product) |
edb82cbf TJ |
266 | { |
267 | struct ftdi_device_list **curdev; | |
579b006f JZ |
268 | libusb_device *dev; |
269 | libusb_device **devs; | |
edb82cbf | 270 | int count = 0; |
579b006f JZ |
271 | int i = 0; |
272 | ||
02212d8e | 273 | if (libusb_init(&ftdi->usb_ctx) < 0) |
579b006f | 274 | ftdi_error_return(-4, "libusb_init() failed"); |
d2f10023 | 275 | |
02212d8e | 276 | if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) |
579b006f | 277 | ftdi_error_return(-5, "libusb_get_device_list() failed"); |
edb82cbf TJ |
278 | |
279 | curdev = devlist; | |
6db32169 | 280 | *curdev = NULL; |
579b006f JZ |
281 | |
282 | while ((dev = devs[i++]) != NULL) | |
22d12cda | 283 | { |
579b006f | 284 | struct libusb_device_descriptor desc; |
d2f10023 | 285 | |
579b006f JZ |
286 | if (libusb_get_device_descriptor(dev, &desc) < 0) |
287 | ftdi_error_return(-6, "libusb_get_device_descriptor() failed"); | |
edb82cbf | 288 | |
579b006f JZ |
289 | if (desc.idVendor == vendor && desc.idProduct == product) |
290 | { | |
291 | *curdev = (struct ftdi_device_list*)malloc(sizeof(struct ftdi_device_list)); | |
292 | if (!*curdev) | |
293 | ftdi_error_return(-3, "out of memory"); | |
294 | ||
295 | (*curdev)->next = NULL; | |
296 | (*curdev)->dev = dev; | |
297 | ||
298 | curdev = &(*curdev)->next; | |
299 | count++; | |
edb82cbf TJ |
300 | } |
301 | } | |
d2f10023 | 302 | |
edb82cbf TJ |
303 | return count; |
304 | } | |
305 | ||
1941414d TJ |
306 | /** |
307 | Frees a usb device list. | |
edb82cbf | 308 | |
1941414d | 309 | \param devlist USB device list created by ftdi_usb_find_all() |
edb82cbf | 310 | */ |
d2f10023 | 311 | void ftdi_list_free(struct ftdi_device_list **devlist) |
edb82cbf | 312 | { |
6db32169 TJ |
313 | struct ftdi_device_list *curdev, *next; |
314 | ||
22d12cda TJ |
315 | for (curdev = *devlist; curdev != NULL;) |
316 | { | |
6db32169 TJ |
317 | next = curdev->next; |
318 | free(curdev); | |
319 | curdev = next; | |
edb82cbf TJ |
320 | } |
321 | ||
6db32169 | 322 | *devlist = NULL; |
edb82cbf TJ |
323 | } |
324 | ||
1941414d | 325 | /** |
cef378aa TJ |
326 | Frees a usb device list. |
327 | ||
328 | \param devlist USB device list created by ftdi_usb_find_all() | |
329 | */ | |
330 | void ftdi_list_free2(struct ftdi_device_list *devlist) | |
331 | { | |
332 | ftdi_list_free(&devlist); | |
333 | } | |
334 | ||
335 | /** | |
474786c0 TJ |
336 | Return device ID strings from the usb device. |
337 | ||
338 | The parameters manufacturer, description and serial may be NULL | |
339 | or pointer to buffers to store the fetched strings. | |
340 | ||
898c34dd TJ |
341 | \note Use this function only in combination with ftdi_usb_find_all() |
342 | as it closes the internal "usb_dev" after use. | |
343 | ||
474786c0 TJ |
344 | \param ftdi pointer to ftdi_context |
345 | \param dev libusb usb_dev to use | |
346 | \param manufacturer Store manufacturer string here if not NULL | |
347 | \param mnf_len Buffer size of manufacturer string | |
348 | \param description Store product description string here if not NULL | |
349 | \param desc_len Buffer size of product description string | |
350 | \param serial Store serial string here if not NULL | |
351 | \param serial_len Buffer size of serial string | |
352 | ||
353 | \retval 0: all fine | |
354 | \retval -1: wrong arguments | |
355 | \retval -4: unable to open device | |
356 | \retval -7: get product manufacturer failed | |
357 | \retval -8: get product description failed | |
358 | \retval -9: get serial number failed | |
579b006f | 359 | \retval -11: libusb_get_device_descriptor() failed |
474786c0 | 360 | */ |
579b006f | 361 | int ftdi_usb_get_strings(struct ftdi_context * ftdi, struct libusb_device * dev, |
22d12cda | 362 | char * manufacturer, int mnf_len, char * description, int desc_len, char * serial, int serial_len) |
474786c0 | 363 | { |
579b006f JZ |
364 | struct libusb_device_descriptor desc; |
365 | ||
474786c0 TJ |
366 | if ((ftdi==NULL) || (dev==NULL)) |
367 | return -1; | |
368 | ||
579b006f JZ |
369 | if (libusb_open(dev, &ftdi->usb_dev) < 0) |
370 | ftdi_error_return(-4, "libusb_open() failed"); | |
371 | ||
372 | if (libusb_get_device_descriptor(dev, &desc) < 0) | |
373 | ftdi_error_return(-11, "libusb_get_device_descriptor() failed"); | |
474786c0 | 374 | |
22d12cda TJ |
375 | if (manufacturer != NULL) |
376 | { | |
579b006f | 377 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iManufacturer, (unsigned char *)manufacturer, mnf_len) < 0) |
22d12cda | 378 | { |
f3f81007 | 379 | ftdi_usb_close_internal (ftdi); |
579b006f | 380 | ftdi_error_return(-7, "libusb_get_string_descriptor_ascii() failed"); |
474786c0 TJ |
381 | } |
382 | } | |
383 | ||
22d12cda TJ |
384 | if (description != NULL) |
385 | { | |
579b006f | 386 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)description, desc_len) < 0) |
22d12cda | 387 | { |
f3f81007 | 388 | ftdi_usb_close_internal (ftdi); |
579b006f | 389 | ftdi_error_return(-8, "libusb_get_string_descriptor_ascii() failed"); |
474786c0 TJ |
390 | } |
391 | } | |
392 | ||
22d12cda TJ |
393 | if (serial != NULL) |
394 | { | |
579b006f | 395 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)serial, serial_len) < 0) |
22d12cda | 396 | { |
f3f81007 | 397 | ftdi_usb_close_internal (ftdi); |
579b006f | 398 | ftdi_error_return(-9, "libusb_get_string_descriptor_ascii() failed"); |
474786c0 TJ |
399 | } |
400 | } | |
401 | ||
579b006f | 402 | ftdi_usb_close_internal (ftdi); |
474786c0 TJ |
403 | |
404 | return 0; | |
405 | } | |
406 | ||
407 | /** | |
e2f12a4f TJ |
408 | * Internal function to determine the maximum packet size. |
409 | * \param ftdi pointer to ftdi_context | |
410 | * \param dev libusb usb_dev to use | |
411 | * \retval Maximum packet size for this device | |
412 | */ | |
579b006f | 413 | static unsigned int _ftdi_determine_max_packet_size(struct ftdi_context *ftdi, libusb_device *dev) |
e2f12a4f | 414 | { |
579b006f JZ |
415 | struct libusb_device_descriptor desc; |
416 | struct libusb_config_descriptor *config0; | |
e2f12a4f TJ |
417 | unsigned int packet_size; |
418 | ||
22a1b5c1 TJ |
419 | // Sanity check |
420 | if (ftdi == NULL || dev == NULL) | |
421 | return 64; | |
422 | ||
e2f12a4f TJ |
423 | // Determine maximum packet size. Init with default value. |
424 | // New hi-speed devices from FTDI use a packet size of 512 bytes | |
425 | // but could be connected to a normal speed USB hub -> 64 bytes packet size. | |
426 | if (ftdi->type == TYPE_2232H || ftdi->type == TYPE_4232H) | |
427 | packet_size = 512; | |
428 | else | |
429 | packet_size = 64; | |
430 | ||
579b006f JZ |
431 | if (libusb_get_device_descriptor(dev, &desc) < 0) |
432 | return packet_size; | |
433 | ||
434 | if (libusb_get_config_descriptor(dev, 0, &config0) < 0) | |
435 | return packet_size; | |
e2f12a4f | 436 | |
579b006f JZ |
437 | if (desc.bNumConfigurations > 0) |
438 | { | |
439 | if (ftdi->interface < config0->bNumInterfaces) | |
e2f12a4f | 440 | { |
579b006f | 441 | struct libusb_interface interface = config0->interface[ftdi->interface]; |
e2f12a4f TJ |
442 | if (interface.num_altsetting > 0) |
443 | { | |
579b006f | 444 | struct libusb_interface_descriptor descriptor = interface.altsetting[0]; |
e2f12a4f TJ |
445 | if (descriptor.bNumEndpoints > 0) |
446 | { | |
447 | packet_size = descriptor.endpoint[0].wMaxPacketSize; | |
448 | } | |
449 | } | |
450 | } | |
451 | } | |
452 | ||
579b006f | 453 | libusb_free_config_descriptor (config0); |
e2f12a4f TJ |
454 | return packet_size; |
455 | } | |
456 | ||
457 | /** | |
418aaa72 | 458 | Opens a ftdi device given by an usb_device. |
7b18bef6 | 459 | |
1941414d TJ |
460 | \param ftdi pointer to ftdi_context |
461 | \param dev libusb usb_dev to use | |
462 | ||
463 | \retval 0: all fine | |
23b1798d | 464 | \retval -3: unable to config device |
1941414d TJ |
465 | \retval -4: unable to open device |
466 | \retval -5: unable to claim device | |
467 | \retval -6: reset failed | |
468 | \retval -7: set baudrate failed | |
22a1b5c1 | 469 | \retval -8: ftdi context invalid |
579b006f JZ |
470 | \retval -9: libusb_get_device_descriptor() failed |
471 | \retval -10: libusb_get_config_descriptor() failed | |
472 | \retval -11: libusb_etach_kernel_driver() failed | |
473 | \retval -12: libusb_get_configuration() failed | |
7b18bef6 | 474 | */ |
579b006f | 475 | int ftdi_usb_open_dev(struct ftdi_context *ftdi, libusb_device *dev) |
7b18bef6 | 476 | { |
579b006f JZ |
477 | struct libusb_device_descriptor desc; |
478 | struct libusb_config_descriptor *config0; | |
43aee24f | 479 | int cfg, cfg0, detach_errno = 0; |
579b006f | 480 | |
22a1b5c1 TJ |
481 | if (ftdi == NULL) |
482 | ftdi_error_return(-8, "ftdi context invalid"); | |
483 | ||
579b006f JZ |
484 | if (libusb_open(dev, &ftdi->usb_dev) < 0) |
485 | ftdi_error_return(-4, "libusb_open() failed"); | |
486 | ||
487 | if (libusb_get_device_descriptor(dev, &desc) < 0) | |
488 | ftdi_error_return(-9, "libusb_get_device_descriptor() failed"); | |
489 | ||
490 | if (libusb_get_config_descriptor(dev, 0, &config0) < 0) | |
491 | ftdi_error_return(-10, "libusb_get_config_descriptor() failed"); | |
492 | cfg0 = config0->bConfigurationValue; | |
493 | libusb_free_config_descriptor (config0); | |
d2f10023 | 494 | |
22592e17 | 495 | // Try to detach ftdi_sio kernel module. |
22592e17 TJ |
496 | // |
497 | // The return code is kept in a separate variable and only parsed | |
498 | // if usb_set_configuration() or usb_claim_interface() fails as the | |
499 | // detach operation might be denied and everything still works fine. | |
500 | // Likely scenario is a static ftdi_sio kernel module. | |
43aee24f UB |
501 | if (libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface) !=0) |
502 | detach_errno = errno; | |
d2f10023 | 503 | |
579b006f JZ |
504 | if (libusb_get_configuration (ftdi->usb_dev, &cfg) < 0) |
505 | ftdi_error_return(-12, "libusb_get_configuration () failed"); | |
b57aedfd GE |
506 | // set configuration (needed especially for windows) |
507 | // tolerate EBUSY: one device with one configuration, but two interfaces | |
508 | // and libftdi sessions to both interfaces (e.g. FT2232) | |
579b006f | 509 | if (desc.bNumConfigurations > 0 && cfg != cfg0) |
b57aedfd | 510 | { |
579b006f | 511 | if (libusb_set_configuration(ftdi->usb_dev, cfg0) < 0) |
22d12cda | 512 | { |
a56ba2bd | 513 | ftdi_usb_close_internal (ftdi); |
43aee24f UB |
514 | if(detach_errno == EPERM) |
515 | { | |
516 | ftdi_error_return(-8, "inappropriate permissions on device!"); | |
517 | } | |
518 | else | |
519 | { | |
c16b162d | 520 | ftdi_error_return(-3, "unable to set usb configuration. Make sure the default FTDI driver is not in use"); |
43aee24f | 521 | } |
23b1798d TJ |
522 | } |
523 | } | |
524 | ||
579b006f | 525 | if (libusb_claim_interface(ftdi->usb_dev, ftdi->interface) < 0) |
22d12cda | 526 | { |
f3f81007 | 527 | ftdi_usb_close_internal (ftdi); |
43aee24f UB |
528 | if(detach_errno == EPERM) |
529 | { | |
530 | ftdi_error_return(-8, "inappropriate permissions on device!"); | |
531 | } | |
532 | else | |
533 | { | |
c16b162d | 534 | ftdi_error_return(-5, "unable to claim usb device. Make sure the default FTDI driver is not in use"); |
43aee24f | 535 | } |
7b18bef6 TJ |
536 | } |
537 | ||
22d12cda TJ |
538 | if (ftdi_usb_reset (ftdi) != 0) |
539 | { | |
f3f81007 | 540 | ftdi_usb_close_internal (ftdi); |
7b18bef6 TJ |
541 | ftdi_error_return(-6, "ftdi_usb_reset failed"); |
542 | } | |
543 | ||
7b18bef6 TJ |
544 | // Try to guess chip type |
545 | // Bug in the BM type chips: bcdDevice is 0x200 for serial == 0 | |
579b006f JZ |
546 | if (desc.bcdDevice == 0x400 || (desc.bcdDevice == 0x200 |
547 | && desc.iSerialNumber == 0)) | |
7b18bef6 | 548 | ftdi->type = TYPE_BM; |
579b006f | 549 | else if (desc.bcdDevice == 0x200) |
7b18bef6 | 550 | ftdi->type = TYPE_AM; |
579b006f | 551 | else if (desc.bcdDevice == 0x500) |
7b18bef6 | 552 | ftdi->type = TYPE_2232C; |
579b006f | 553 | else if (desc.bcdDevice == 0x600) |
cb6250fa | 554 | ftdi->type = TYPE_R; |
579b006f | 555 | else if (desc.bcdDevice == 0x700) |
0beb9686 | 556 | ftdi->type = TYPE_2232H; |
579b006f | 557 | else if (desc.bcdDevice == 0x800) |
0beb9686 | 558 | ftdi->type = TYPE_4232H; |
7b18bef6 | 559 | |
f9d69895 AH |
560 | // Set default interface on dual/quad type chips |
561 | switch(ftdi->type) | |
562 | { | |
563 | case TYPE_2232C: | |
564 | case TYPE_2232H: | |
565 | case TYPE_4232H: | |
566 | if (!ftdi->index) | |
567 | ftdi->index = INTERFACE_A; | |
568 | break; | |
569 | default: | |
570 | break; | |
571 | } | |
572 | ||
e2f12a4f TJ |
573 | // Determine maximum packet size |
574 | ftdi->max_packet_size = _ftdi_determine_max_packet_size(ftdi, dev); | |
575 | ||
ef6f4838 TE |
576 | if (ftdi_set_baudrate (ftdi, 9600) != 0) |
577 | { | |
578 | ftdi_usb_close_internal (ftdi); | |
579 | ftdi_error_return(-7, "set baudrate failed"); | |
580 | } | |
581 | ||
7b18bef6 TJ |
582 | ftdi_error_return(0, "all fine"); |
583 | } | |
584 | ||
1941414d TJ |
585 | /** |
586 | Opens the first device with a given vendor and product ids. | |
587 | ||
588 | \param ftdi pointer to ftdi_context | |
589 | \param vendor Vendor ID | |
590 | \param product Product ID | |
591 | ||
9bec2387 | 592 | \retval same as ftdi_usb_open_desc() |
1941414d | 593 | */ |
edb82cbf TJ |
594 | int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product) |
595 | { | |
596 | return ftdi_usb_open_desc(ftdi, vendor, product, NULL, NULL); | |
597 | } | |
598 | ||
1941414d TJ |
599 | /** |
600 | Opens the first device with a given, vendor id, product id, | |
601 | description and serial. | |
602 | ||
603 | \param ftdi pointer to ftdi_context | |
604 | \param vendor Vendor ID | |
605 | \param product Product ID | |
606 | \param description Description to search for. Use NULL if not needed. | |
607 | \param serial Serial to search for. Use NULL if not needed. | |
608 | ||
609 | \retval 0: all fine | |
1941414d TJ |
610 | \retval -3: usb device not found |
611 | \retval -4: unable to open device | |
612 | \retval -5: unable to claim device | |
613 | \retval -6: reset failed | |
614 | \retval -7: set baudrate failed | |
615 | \retval -8: get product description failed | |
616 | \retval -9: get serial number failed | |
579b006f JZ |
617 | \retval -11: libusb_init() failed |
618 | \retval -12: libusb_get_device_list() failed | |
619 | \retval -13: libusb_get_device_descriptor() failed | |
a3da1d95 | 620 | */ |
04e1ea0a | 621 | int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product, |
a8f46ddc TJ |
622 | const char* description, const char* serial) |
623 | { | |
5ebbdab9 GE |
624 | return ftdi_usb_open_desc_index(ftdi,vendor,product,description,serial,0); |
625 | } | |
626 | ||
627 | /** | |
628 | Opens the index-th device with a given, vendor id, product id, | |
629 | description and serial. | |
630 | ||
631 | \param ftdi pointer to ftdi_context | |
632 | \param vendor Vendor ID | |
633 | \param product Product ID | |
634 | \param description Description to search for. Use NULL if not needed. | |
635 | \param serial Serial to search for. Use NULL if not needed. | |
636 | \param index Number of matching device to open if there are more than one, starts with 0. | |
637 | ||
638 | \retval 0: all fine | |
639 | \retval -1: usb_find_busses() failed | |
640 | \retval -2: usb_find_devices() failed | |
641 | \retval -3: usb device not found | |
642 | \retval -4: unable to open device | |
643 | \retval -5: unable to claim device | |
644 | \retval -6: reset failed | |
645 | \retval -7: set baudrate failed | |
646 | \retval -8: get product description failed | |
647 | \retval -9: get serial number failed | |
648 | \retval -10: unable to close device | |
22a1b5c1 | 649 | \retval -11: ftdi context invalid |
5ebbdab9 GE |
650 | */ |
651 | int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product, | |
652 | const char* description, const char* serial, unsigned int index) | |
653 | { | |
579b006f JZ |
654 | libusb_device *dev; |
655 | libusb_device **devs; | |
c3d95b87 | 656 | char string[256]; |
579b006f | 657 | int i = 0; |
98452d97 | 658 | |
02212d8e | 659 | if (libusb_init(&ftdi->usb_ctx) < 0) |
579b006f | 660 | ftdi_error_return(-11, "libusb_init() failed"); |
98452d97 | 661 | |
22a1b5c1 TJ |
662 | if (ftdi == NULL) |
663 | ftdi_error_return(-11, "ftdi context invalid"); | |
664 | ||
02212d8e | 665 | if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) |
99650502 UB |
666 | ftdi_error_return(-12, "libusb_get_device_list() failed"); |
667 | ||
579b006f | 668 | while ((dev = devs[i++]) != NULL) |
22d12cda | 669 | { |
579b006f | 670 | struct libusb_device_descriptor desc; |
99650502 | 671 | int res; |
579b006f JZ |
672 | |
673 | if (libusb_get_device_descriptor(dev, &desc) < 0) | |
99650502 | 674 | ftdi_error_return_free_device_list(-13, "libusb_get_device_descriptor() failed", devs); |
579b006f JZ |
675 | |
676 | if (desc.idVendor == vendor && desc.idProduct == product) | |
22d12cda | 677 | { |
579b006f | 678 | if (libusb_open(dev, &ftdi->usb_dev) < 0) |
99650502 | 679 | ftdi_error_return_free_device_list(-4, "usb_open() failed", devs); |
c3d95b87 | 680 | |
579b006f JZ |
681 | if (description != NULL) |
682 | { | |
683 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)string, sizeof(string)) < 0) | |
22d12cda | 684 | { |
579b006f | 685 | libusb_close (ftdi->usb_dev); |
99650502 | 686 | ftdi_error_return_free_device_list(-8, "unable to fetch product description", devs); |
a8f46ddc | 687 | } |
579b006f | 688 | if (strncmp(string, description, sizeof(string)) != 0) |
22d12cda | 689 | { |
579b006f JZ |
690 | libusb_close (ftdi->usb_dev); |
691 | continue; | |
a8f46ddc | 692 | } |
579b006f JZ |
693 | } |
694 | if (serial != NULL) | |
695 | { | |
696 | if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)string, sizeof(string)) < 0) | |
697 | { | |
698 | ftdi_usb_close_internal (ftdi); | |
99650502 | 699 | ftdi_error_return_free_device_list(-9, "unable to fetch serial number", devs); |
579b006f JZ |
700 | } |
701 | if (strncmp(string, serial, sizeof(string)) != 0) | |
702 | { | |
703 | ftdi_usb_close_internal (ftdi); | |
704 | continue; | |
705 | } | |
706 | } | |
98452d97 | 707 | |
579b006f | 708 | ftdi_usb_close_internal (ftdi); |
d2f10023 | 709 | |
5ebbdab9 GE |
710 | if (index > 0) |
711 | { | |
712 | index--; | |
713 | continue; | |
714 | } | |
715 | ||
99650502 UB |
716 | res = ftdi_usb_open_dev(ftdi, dev); |
717 | libusb_free_device_list(devs,1); | |
718 | return res; | |
98452d97 | 719 | } |
98452d97 | 720 | } |
a3da1d95 | 721 | |
98452d97 | 722 | // device not found |
99650502 | 723 | ftdi_error_return_free_device_list(-3, "device not found", devs); |
a3da1d95 GE |
724 | } |
725 | ||
1941414d | 726 | /** |
5ebbdab9 GE |
727 | Opens the ftdi-device described by a description-string. |
728 | Intended to be used for parsing a device-description given as commandline argument. | |
729 | ||
730 | \param ftdi pointer to ftdi_context | |
731 | \param description NULL-terminated description-string, using this format: | |
732 | \li <tt>d:\<devicenode></tt> path of bus and device-node (e.g. "003/001") within usb device tree (usually at /proc/bus/usb/) | |
733 | \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") | |
734 | \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 | |
735 | \li <tt>s:\<vendor>:\<product>:\<serial></tt> first device with given vendor id, product id and serial string | |
736 | ||
737 | \note The description format may be extended in later versions. | |
738 | ||
739 | \retval 0: all fine | |
579b006f JZ |
740 | \retval -1: libusb_init() failed |
741 | \retval -2: libusb_get_device_list() failed | |
5ebbdab9 GE |
742 | \retval -3: usb device not found |
743 | \retval -4: unable to open device | |
744 | \retval -5: unable to claim device | |
745 | \retval -6: reset failed | |
746 | \retval -7: set baudrate failed | |
747 | \retval -8: get product description failed | |
748 | \retval -9: get serial number failed | |
749 | \retval -10: unable to close device | |
750 | \retval -11: illegal description format | |
22a1b5c1 | 751 | \retval -12: ftdi context invalid |
5ebbdab9 GE |
752 | */ |
753 | int ftdi_usb_open_string(struct ftdi_context *ftdi, const char* description) | |
754 | { | |
22a1b5c1 TJ |
755 | if (ftdi == NULL) |
756 | ftdi_error_return(-12, "ftdi context invalid"); | |
757 | ||
5ebbdab9 GE |
758 | if (description[0] == 0 || description[1] != ':') |
759 | ftdi_error_return(-11, "illegal description format"); | |
760 | ||
761 | if (description[0] == 'd') | |
762 | { | |
579b006f JZ |
763 | libusb_device *dev; |
764 | libusb_device **devs; | |
765 | unsigned int bus_number, device_address; | |
766 | int i = 0; | |
767 | ||
02212d8e | 768 | if (libusb_init (&ftdi->usb_ctx) < 0) |
579b006f | 769 | ftdi_error_return(-1, "libusb_init() failed"); |
5ebbdab9 | 770 | |
02212d8e | 771 | if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0) |
579b006f | 772 | ftdi_error_return(-2, "libusb_get_device_list() failed"); |
5ebbdab9 | 773 | |
579b006f JZ |
774 | /* XXX: This doesn't handle symlinks/odd paths/etc... */ |
775 | if (sscanf (description + 2, "%u/%u", &bus_number, &device_address) != 2) | |
99650502 | 776 | ftdi_error_return_free_device_list(-11, "illegal description format", devs); |
5ebbdab9 | 777 | |
579b006f | 778 | while ((dev = devs[i++]) != NULL) |
5ebbdab9 | 779 | { |
99650502 | 780 | int ret; |
579b006f JZ |
781 | if (bus_number == libusb_get_bus_number (dev) |
782 | && device_address == libusb_get_device_address (dev)) | |
99650502 UB |
783 | { |
784 | ret = ftdi_usb_open_dev(ftdi, dev); | |
785 | libusb_free_device_list(devs,1); | |
786 | return ret; | |
787 | } | |
5ebbdab9 GE |
788 | } |
789 | ||
790 | // device not found | |
99650502 | 791 | ftdi_error_return_free_device_list(-3, "device not found", devs); |
5ebbdab9 GE |
792 | } |
793 | else if (description[0] == 'i' || description[0] == 's') | |
794 | { | |
795 | unsigned int vendor; | |
796 | unsigned int product; | |
797 | unsigned int index=0; | |
0e6cf62b | 798 | const char *serial=NULL; |
5ebbdab9 GE |
799 | const char *startp, *endp; |
800 | ||
801 | errno=0; | |
802 | startp=description+2; | |
803 | vendor=strtoul((char*)startp,(char**)&endp,0); | |
804 | if (*endp != ':' || endp == startp || errno != 0) | |
805 | ftdi_error_return(-11, "illegal description format"); | |
806 | ||
807 | startp=endp+1; | |
808 | product=strtoul((char*)startp,(char**)&endp,0); | |
809 | if (endp == startp || errno != 0) | |
810 | ftdi_error_return(-11, "illegal description format"); | |
811 | ||
812 | if (description[0] == 'i' && *endp != 0) | |
813 | { | |
814 | /* optional index field in i-mode */ | |
815 | if (*endp != ':') | |
816 | ftdi_error_return(-11, "illegal description format"); | |
817 | ||
818 | startp=endp+1; | |
819 | index=strtoul((char*)startp,(char**)&endp,0); | |
820 | if (*endp != 0 || endp == startp || errno != 0) | |
821 | ftdi_error_return(-11, "illegal description format"); | |
822 | } | |
823 | if (description[0] == 's') | |
824 | { | |
825 | if (*endp != ':') | |
826 | ftdi_error_return(-11, "illegal description format"); | |
827 | ||
828 | /* rest of the description is the serial */ | |
829 | serial=endp+1; | |
830 | } | |
831 | ||
832 | return ftdi_usb_open_desc_index(ftdi, vendor, product, NULL, serial, index); | |
833 | } | |
834 | else | |
835 | { | |
836 | ftdi_error_return(-11, "illegal description format"); | |
837 | } | |
838 | } | |
839 | ||
840 | /** | |
1941414d | 841 | Resets the ftdi device. |
a3da1d95 | 842 | |
1941414d TJ |
843 | \param ftdi pointer to ftdi_context |
844 | ||
845 | \retval 0: all fine | |
846 | \retval -1: FTDI reset failed | |
22a1b5c1 | 847 | \retval -2: USB device unavailable |
4837f98a | 848 | */ |
edb82cbf | 849 | int ftdi_usb_reset(struct ftdi_context *ftdi) |
a8f46ddc | 850 | { |
22a1b5c1 TJ |
851 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
852 | ftdi_error_return(-2, "USB device unavailable"); | |
853 | ||
579b006f JZ |
854 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
855 | SIO_RESET_REQUEST, SIO_RESET_SIO, | |
856 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
22d12cda | 857 | ftdi_error_return(-1,"FTDI reset failed"); |
c3d95b87 | 858 | |
545820ce | 859 | // Invalidate data in the readbuffer |
bfcee05b TJ |
860 | ftdi->readbuffer_offset = 0; |
861 | ftdi->readbuffer_remaining = 0; | |
862 | ||
a3da1d95 GE |
863 | return 0; |
864 | } | |
865 | ||
1941414d | 866 | /** |
1189b11a | 867 | Clears the read buffer on the chip and the internal read buffer. |
1941414d TJ |
868 | |
869 | \param ftdi pointer to ftdi_context | |
4837f98a | 870 | |
1941414d | 871 | \retval 0: all fine |
1189b11a | 872 | \retval -1: read buffer purge failed |
22a1b5c1 | 873 | \retval -2: USB device unavailable |
4837f98a | 874 | */ |
1189b11a | 875 | int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi) |
a8f46ddc | 876 | { |
22a1b5c1 TJ |
877 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
878 | ftdi_error_return(-2, "USB device unavailable"); | |
879 | ||
579b006f JZ |
880 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
881 | SIO_RESET_REQUEST, SIO_RESET_PURGE_RX, | |
882 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 TJ |
883 | ftdi_error_return(-1, "FTDI purge of RX buffer failed"); |
884 | ||
545820ce | 885 | // Invalidate data in the readbuffer |
bfcee05b TJ |
886 | ftdi->readbuffer_offset = 0; |
887 | ftdi->readbuffer_remaining = 0; | |
a60be878 | 888 | |
1189b11a TJ |
889 | return 0; |
890 | } | |
891 | ||
892 | /** | |
893 | Clears the write buffer on the chip. | |
894 | ||
895 | \param ftdi pointer to ftdi_context | |
896 | ||
897 | \retval 0: all fine | |
898 | \retval -1: write buffer purge failed | |
22a1b5c1 | 899 | \retval -2: USB device unavailable |
1189b11a TJ |
900 | */ |
901 | int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi) | |
902 | { | |
22a1b5c1 TJ |
903 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
904 | ftdi_error_return(-2, "USB device unavailable"); | |
905 | ||
579b006f JZ |
906 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
907 | SIO_RESET_REQUEST, SIO_RESET_PURGE_TX, | |
908 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
1189b11a TJ |
909 | ftdi_error_return(-1, "FTDI purge of TX buffer failed"); |
910 | ||
911 | return 0; | |
912 | } | |
913 | ||
914 | /** | |
915 | Clears the buffers on the chip and the internal read buffer. | |
916 | ||
917 | \param ftdi pointer to ftdi_context | |
918 | ||
919 | \retval 0: all fine | |
920 | \retval -1: read buffer purge failed | |
921 | \retval -2: write buffer purge failed | |
22a1b5c1 | 922 | \retval -3: USB device unavailable |
1189b11a TJ |
923 | */ |
924 | int ftdi_usb_purge_buffers(struct ftdi_context *ftdi) | |
925 | { | |
926 | int result; | |
927 | ||
22a1b5c1 TJ |
928 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
929 | ftdi_error_return(-3, "USB device unavailable"); | |
930 | ||
1189b11a | 931 | result = ftdi_usb_purge_rx_buffer(ftdi); |
5a2b51cb | 932 | if (result < 0) |
1189b11a TJ |
933 | return -1; |
934 | ||
935 | result = ftdi_usb_purge_tx_buffer(ftdi); | |
5a2b51cb | 936 | if (result < 0) |
1189b11a | 937 | return -2; |
545820ce | 938 | |
a60be878 TJ |
939 | return 0; |
940 | } | |
a3da1d95 | 941 | |
f3f81007 TJ |
942 | |
943 | ||
1941414d TJ |
944 | /** |
945 | Closes the ftdi device. Call ftdi_deinit() if you're cleaning up. | |
946 | ||
947 | \param ftdi pointer to ftdi_context | |
948 | ||
949 | \retval 0: all fine | |
950 | \retval -1: usb_release failed | |
22a1b5c1 | 951 | \retval -3: ftdi context invalid |
a3da1d95 | 952 | */ |
a8f46ddc TJ |
953 | int ftdi_usb_close(struct ftdi_context *ftdi) |
954 | { | |
a3da1d95 GE |
955 | int rtn = 0; |
956 | ||
22a1b5c1 TJ |
957 | if (ftdi == NULL) |
958 | ftdi_error_return(-3, "ftdi context invalid"); | |
959 | ||
dff4fdb0 | 960 | if (ftdi->usb_dev != NULL) |
579b006f | 961 | if (libusb_release_interface(ftdi->usb_dev, ftdi->interface) < 0) |
dff4fdb0 | 962 | rtn = -1; |
98452d97 | 963 | |
579b006f | 964 | ftdi_usb_close_internal (ftdi); |
98452d97 | 965 | |
a3da1d95 GE |
966 | return rtn; |
967 | } | |
968 | ||
418aaa72 | 969 | /** |
53ad271d TJ |
970 | ftdi_convert_baudrate returns nearest supported baud rate to that requested. |
971 | Function is only used internally | |
b5ec1820 | 972 | \internal |
53ad271d | 973 | */ |
0126d22e | 974 | static int ftdi_convert_baudrate(int baudrate, struct ftdi_context *ftdi, |
a8f46ddc TJ |
975 | unsigned short *value, unsigned short *index) |
976 | { | |
53ad271d TJ |
977 | static const char am_adjust_up[8] = {0, 0, 0, 1, 0, 3, 2, 1}; |
978 | static const char am_adjust_dn[8] = {0, 0, 0, 1, 0, 1, 2, 3}; | |
979 | static const char frac_code[8] = {0, 3, 2, 4, 1, 5, 6, 7}; | |
980 | int divisor, best_divisor, best_baud, best_baud_diff; | |
981 | unsigned long encoded_divisor; | |
982 | int i; | |
983 | ||
22d12cda TJ |
984 | if (baudrate <= 0) |
985 | { | |
53ad271d TJ |
986 | // Return error |
987 | return -1; | |
988 | } | |
989 | ||
990 | divisor = 24000000 / baudrate; | |
991 | ||
22d12cda TJ |
992 | if (ftdi->type == TYPE_AM) |
993 | { | |
53ad271d TJ |
994 | // Round down to supported fraction (AM only) |
995 | divisor -= am_adjust_dn[divisor & 7]; | |
996 | } | |
997 | ||
998 | // Try this divisor and the one above it (because division rounds down) | |
999 | best_divisor = 0; | |
1000 | best_baud = 0; | |
1001 | best_baud_diff = 0; | |
22d12cda TJ |
1002 | for (i = 0; i < 2; i++) |
1003 | { | |
53ad271d TJ |
1004 | int try_divisor = divisor + i; |
1005 | int baud_estimate; | |
1006 | int baud_diff; | |
1007 | ||
1008 | // Round up to supported divisor value | |
22d12cda TJ |
1009 | if (try_divisor <= 8) |
1010 | { | |
53ad271d TJ |
1011 | // Round up to minimum supported divisor |
1012 | try_divisor = 8; | |
22d12cda TJ |
1013 | } |
1014 | else if (ftdi->type != TYPE_AM && try_divisor < 12) | |
1015 | { | |
53ad271d TJ |
1016 | // BM doesn't support divisors 9 through 11 inclusive |
1017 | try_divisor = 12; | |
22d12cda TJ |
1018 | } |
1019 | else if (divisor < 16) | |
1020 | { | |
53ad271d TJ |
1021 | // AM doesn't support divisors 9 through 15 inclusive |
1022 | try_divisor = 16; | |
22d12cda TJ |
1023 | } |
1024 | else | |
1025 | { | |
1026 | if (ftdi->type == TYPE_AM) | |
1027 | { | |
53ad271d TJ |
1028 | // Round up to supported fraction (AM only) |
1029 | try_divisor += am_adjust_up[try_divisor & 7]; | |
22d12cda TJ |
1030 | if (try_divisor > 0x1FFF8) |
1031 | { | |
53ad271d TJ |
1032 | // Round down to maximum supported divisor value (for AM) |
1033 | try_divisor = 0x1FFF8; | |
1034 | } | |
22d12cda TJ |
1035 | } |
1036 | else | |
1037 | { | |
1038 | if (try_divisor > 0x1FFFF) | |
1039 | { | |
53ad271d TJ |
1040 | // Round down to maximum supported divisor value (for BM) |
1041 | try_divisor = 0x1FFFF; | |
1042 | } | |
1043 | } | |
1044 | } | |
1045 | // Get estimated baud rate (to nearest integer) | |
1046 | baud_estimate = (24000000 + (try_divisor / 2)) / try_divisor; | |
1047 | // Get absolute difference from requested baud rate | |
22d12cda TJ |
1048 | if (baud_estimate < baudrate) |
1049 | { | |
53ad271d | 1050 | baud_diff = baudrate - baud_estimate; |
22d12cda TJ |
1051 | } |
1052 | else | |
1053 | { | |
53ad271d TJ |
1054 | baud_diff = baud_estimate - baudrate; |
1055 | } | |
22d12cda TJ |
1056 | if (i == 0 || baud_diff < best_baud_diff) |
1057 | { | |
53ad271d TJ |
1058 | // Closest to requested baud rate so far |
1059 | best_divisor = try_divisor; | |
1060 | best_baud = baud_estimate; | |
1061 | best_baud_diff = baud_diff; | |
22d12cda TJ |
1062 | if (baud_diff == 0) |
1063 | { | |
53ad271d TJ |
1064 | // Spot on! No point trying |
1065 | break; | |
1066 | } | |
1067 | } | |
1068 | } | |
1069 | // Encode the best divisor value | |
1070 | encoded_divisor = (best_divisor >> 3) | (frac_code[best_divisor & 7] << 14); | |
1071 | // Deal with special cases for encoded value | |
22d12cda TJ |
1072 | if (encoded_divisor == 1) |
1073 | { | |
4837f98a | 1074 | encoded_divisor = 0; // 3000000 baud |
22d12cda TJ |
1075 | } |
1076 | else if (encoded_divisor == 0x4001) | |
1077 | { | |
4837f98a | 1078 | encoded_divisor = 1; // 2000000 baud (BM only) |
53ad271d TJ |
1079 | } |
1080 | // Split into "value" and "index" values | |
1081 | *value = (unsigned short)(encoded_divisor & 0xFFFF); | |
1416eb14 | 1082 | if (ftdi->type == TYPE_2232C || ftdi->type == TYPE_2232H || ftdi->type == TYPE_4232H) |
22d12cda | 1083 | { |
0126d22e TJ |
1084 | *index = (unsigned short)(encoded_divisor >> 8); |
1085 | *index &= 0xFF00; | |
a9c57c05 | 1086 | *index |= ftdi->index; |
0126d22e TJ |
1087 | } |
1088 | else | |
1089 | *index = (unsigned short)(encoded_divisor >> 16); | |
c3d95b87 | 1090 | |
53ad271d TJ |
1091 | // Return the nearest baud rate |
1092 | return best_baud; | |
1093 | } | |
1094 | ||
1941414d | 1095 | /** |
9bec2387 | 1096 | Sets the chip baud rate |
1941414d TJ |
1097 | |
1098 | \param ftdi pointer to ftdi_context | |
9bec2387 | 1099 | \param baudrate baud rate to set |
1941414d TJ |
1100 | |
1101 | \retval 0: all fine | |
1102 | \retval -1: invalid baudrate | |
1103 | \retval -2: setting baudrate failed | |
22a1b5c1 | 1104 | \retval -3: USB device unavailable |
a3da1d95 | 1105 | */ |
a8f46ddc TJ |
1106 | int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate) |
1107 | { | |
53ad271d TJ |
1108 | unsigned short value, index; |
1109 | int actual_baudrate; | |
a3da1d95 | 1110 | |
22a1b5c1 TJ |
1111 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1112 | ftdi_error_return(-3, "USB device unavailable"); | |
1113 | ||
22d12cda TJ |
1114 | if (ftdi->bitbang_enabled) |
1115 | { | |
a3da1d95 GE |
1116 | baudrate = baudrate*4; |
1117 | } | |
1118 | ||
25707904 | 1119 | actual_baudrate = ftdi_convert_baudrate(baudrate, ftdi, &value, &index); |
c3d95b87 TJ |
1120 | if (actual_baudrate <= 0) |
1121 | ftdi_error_return (-1, "Silly baudrate <= 0."); | |
a3da1d95 | 1122 | |
53ad271d TJ |
1123 | // Check within tolerance (about 5%) |
1124 | if ((actual_baudrate * 2 < baudrate /* Catch overflows */ ) | |
1125 | || ((actual_baudrate < baudrate) | |
1126 | ? (actual_baudrate * 21 < baudrate * 20) | |
c3d95b87 TJ |
1127 | : (baudrate * 21 < actual_baudrate * 20))) |
1128 | ftdi_error_return (-1, "Unsupported baudrate. Note: bitbang baudrates are automatically multiplied by 4"); | |
545820ce | 1129 | |
579b006f JZ |
1130 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
1131 | SIO_SET_BAUDRATE_REQUEST, value, | |
1132 | index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 | 1133 | ftdi_error_return (-2, "Setting new baudrate failed"); |
a3da1d95 GE |
1134 | |
1135 | ftdi->baudrate = baudrate; | |
1136 | return 0; | |
1137 | } | |
1138 | ||
1941414d | 1139 | /** |
6c32e222 TJ |
1140 | Set (RS232) line characteristics. |
1141 | The break type can only be set via ftdi_set_line_property2() | |
1142 | and defaults to "off". | |
4837f98a | 1143 | |
1941414d TJ |
1144 | \param ftdi pointer to ftdi_context |
1145 | \param bits Number of bits | |
1146 | \param sbit Number of stop bits | |
1147 | \param parity Parity mode | |
1148 | ||
1149 | \retval 0: all fine | |
1150 | \retval -1: Setting line property failed | |
2f73e59f TJ |
1151 | */ |
1152 | int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits, | |
d2f10023 | 1153 | enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity) |
2f73e59f | 1154 | { |
6c32e222 TJ |
1155 | return ftdi_set_line_property2(ftdi, bits, sbit, parity, BREAK_OFF); |
1156 | } | |
1157 | ||
1158 | /** | |
1159 | Set (RS232) line characteristics | |
1160 | ||
1161 | \param ftdi pointer to ftdi_context | |
1162 | \param bits Number of bits | |
1163 | \param sbit Number of stop bits | |
1164 | \param parity Parity mode | |
1165 | \param break_type Break type | |
1166 | ||
1167 | \retval 0: all fine | |
1168 | \retval -1: Setting line property failed | |
22a1b5c1 | 1169 | \retval -2: USB device unavailable |
6c32e222 TJ |
1170 | */ |
1171 | int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits, | |
22d12cda TJ |
1172 | enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity, |
1173 | enum ftdi_break_type break_type) | |
6c32e222 | 1174 | { |
2f73e59f TJ |
1175 | unsigned short value = bits; |
1176 | ||
22a1b5c1 TJ |
1177 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1178 | ftdi_error_return(-2, "USB device unavailable"); | |
1179 | ||
22d12cda TJ |
1180 | switch (parity) |
1181 | { | |
1182 | case NONE: | |
1183 | value |= (0x00 << 8); | |
1184 | break; | |
1185 | case ODD: | |
1186 | value |= (0x01 << 8); | |
1187 | break; | |
1188 | case EVEN: | |
1189 | value |= (0x02 << 8); | |
1190 | break; | |
1191 | case MARK: | |
1192 | value |= (0x03 << 8); | |
1193 | break; | |
1194 | case SPACE: | |
1195 | value |= (0x04 << 8); | |
1196 | break; | |
2f73e59f | 1197 | } |
d2f10023 | 1198 | |
22d12cda TJ |
1199 | switch (sbit) |
1200 | { | |
1201 | case STOP_BIT_1: | |
1202 | value |= (0x00 << 11); | |
1203 | break; | |
1204 | case STOP_BIT_15: | |
1205 | value |= (0x01 << 11); | |
1206 | break; | |
1207 | case STOP_BIT_2: | |
1208 | value |= (0x02 << 11); | |
1209 | break; | |
2f73e59f | 1210 | } |
d2f10023 | 1211 | |
22d12cda TJ |
1212 | switch (break_type) |
1213 | { | |
1214 | case BREAK_OFF: | |
1215 | value |= (0x00 << 14); | |
1216 | break; | |
1217 | case BREAK_ON: | |
1218 | value |= (0x01 << 14); | |
1219 | break; | |
6c32e222 TJ |
1220 | } |
1221 | ||
579b006f JZ |
1222 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
1223 | SIO_SET_DATA_REQUEST, value, | |
1224 | ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0) | |
2f73e59f | 1225 | ftdi_error_return (-1, "Setting new line property failed"); |
d2f10023 | 1226 | |
2f73e59f TJ |
1227 | return 0; |
1228 | } | |
a3da1d95 | 1229 | |
1941414d TJ |
1230 | /** |
1231 | Writes data in chunks (see ftdi_write_data_set_chunksize()) to the chip | |
1232 | ||
1233 | \param ftdi pointer to ftdi_context | |
1234 | \param buf Buffer with the data | |
1235 | \param size Size of the buffer | |
1236 | ||
22a1b5c1 | 1237 | \retval -666: USB device unavailable |
1941414d TJ |
1238 | \retval <0: error code from usb_bulk_write() |
1239 | \retval >0: number of bytes written | |
1240 | */ | |
a8f46ddc TJ |
1241 | int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size) |
1242 | { | |
a3da1d95 | 1243 | int offset = 0; |
579b006f | 1244 | int actual_length; |
c3d95b87 | 1245 | |
22a1b5c1 TJ |
1246 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1247 | ftdi_error_return(-666, "USB device unavailable"); | |
1248 | ||
22d12cda TJ |
1249 | while (offset < size) |
1250 | { | |
948f9ada | 1251 | int write_size = ftdi->writebuffer_chunksize; |
a3da1d95 GE |
1252 | |
1253 | if (offset+write_size > size) | |
1254 | write_size = size-offset; | |
1255 | ||
579b006f JZ |
1256 | if (libusb_bulk_transfer(ftdi->usb_dev, ftdi->in_ep, buf+offset, write_size, &actual_length, ftdi->usb_write_timeout) < 0) |
1257 | ftdi_error_return(-1, "usb bulk write failed"); | |
a3da1d95 | 1258 | |
579b006f | 1259 | offset += actual_length; |
a3da1d95 GE |
1260 | } |
1261 | ||
579b006f | 1262 | return offset; |
a3da1d95 GE |
1263 | } |
1264 | ||
579b006f | 1265 | static void ftdi_read_data_cb(struct libusb_transfer *transfer) |
22d12cda | 1266 | { |
579b006f JZ |
1267 | struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data; |
1268 | struct ftdi_context *ftdi = tc->ftdi; | |
1269 | int packet_size, actual_length, num_of_chunks, chunk_remains, i, ret; | |
4c9e3812 | 1270 | |
b1139150 | 1271 | packet_size = ftdi->max_packet_size; |
579b006f JZ |
1272 | |
1273 | actual_length = transfer->actual_length; | |
1274 | ||
1275 | if (actual_length > 2) | |
1276 | { | |
1277 | // skip FTDI status bytes. | |
1278 | // Maybe stored in the future to enable modem use | |
1279 | num_of_chunks = actual_length / packet_size; | |
1280 | chunk_remains = actual_length % packet_size; | |
1281 | //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); | |
1282 | ||
1283 | ftdi->readbuffer_offset += 2; | |
1284 | actual_length -= 2; | |
1285 | ||
1286 | if (actual_length > packet_size - 2) | |
1287 | { | |
1288 | for (i = 1; i < num_of_chunks; i++) | |
1289 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, | |
1290 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1291 | packet_size - 2); | |
1292 | if (chunk_remains > 2) | |
1293 | { | |
1294 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, | |
1295 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1296 | chunk_remains-2); | |
1297 | actual_length -= 2*num_of_chunks; | |
1298 | } | |
1299 | else | |
1300 | actual_length -= 2*(num_of_chunks-1)+chunk_remains; | |
1301 | } | |
1302 | ||
1303 | if (actual_length > 0) | |
1304 | { | |
1305 | // data still fits in buf? | |
1306 | if (tc->offset + actual_length <= tc->size) | |
1307 | { | |
1308 | memcpy (tc->buf + tc->offset, ftdi->readbuffer + ftdi->readbuffer_offset, actual_length); | |
1309 | //printf("buf[0] = %X, buf[1] = %X\n", buf[0], buf[1]); | |
1310 | tc->offset += actual_length; | |
1311 | ||
1312 | ftdi->readbuffer_offset = 0; | |
1313 | ftdi->readbuffer_remaining = 0; | |
1314 | ||
1315 | /* Did we read exactly the right amount of bytes? */ | |
1316 | if (tc->offset == tc->size) | |
1317 | { | |
1318 | //printf("read_data exact rem %d offset %d\n", | |
1319 | //ftdi->readbuffer_remaining, offset); | |
1320 | tc->completed = 1; | |
1321 | return; | |
1322 | } | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | // only copy part of the data or size <= readbuffer_chunksize | |
1327 | int part_size = tc->size - tc->offset; | |
1328 | memcpy (tc->buf + tc->offset, ftdi->readbuffer + ftdi->readbuffer_offset, part_size); | |
1329 | tc->offset += part_size; | |
1330 | ||
1331 | ftdi->readbuffer_offset += part_size; | |
1332 | ftdi->readbuffer_remaining = actual_length - part_size; | |
1333 | ||
1334 | /* printf("Returning part: %d - size: %d - offset: %d - actual_length: %d - remaining: %d\n", | |
1335 | part_size, size, offset, actual_length, ftdi->readbuffer_remaining); */ | |
1336 | tc->completed = 1; | |
1337 | return; | |
1338 | } | |
1339 | } | |
1340 | } | |
1341 | ret = libusb_submit_transfer (transfer); | |
1342 | if (ret < 0) | |
1343 | tc->completed = 1; | |
1344 | } | |
1345 | ||
1346 | ||
1347 | static void ftdi_write_data_cb(struct libusb_transfer *transfer) | |
7cc9950e | 1348 | { |
579b006f JZ |
1349 | struct ftdi_transfer_control *tc = (struct ftdi_transfer_control *) transfer->user_data; |
1350 | struct ftdi_context *ftdi = tc->ftdi; | |
90ef163e YSL |
1351 | |
1352 | tc->offset += transfer->actual_length; | |
1353 | ||
579b006f | 1354 | if (tc->offset == tc->size) |
22d12cda | 1355 | { |
579b006f | 1356 | tc->completed = 1; |
7cc9950e | 1357 | } |
579b006f JZ |
1358 | else |
1359 | { | |
1360 | int write_size = ftdi->writebuffer_chunksize; | |
1361 | int ret; | |
7cc9950e | 1362 | |
579b006f JZ |
1363 | if (tc->offset + write_size > tc->size) |
1364 | write_size = tc->size - tc->offset; | |
1365 | ||
1366 | transfer->length = write_size; | |
1367 | transfer->buffer = tc->buf + tc->offset; | |
1368 | ret = libusb_submit_transfer (transfer); | |
1369 | if (ret < 0) | |
1370 | tc->completed = 1; | |
1371 | } | |
7cc9950e GE |
1372 | } |
1373 | ||
579b006f | 1374 | |
84f85aaa | 1375 | /** |
579b006f JZ |
1376 | Writes data to the chip. Does not wait for completion of the transfer |
1377 | nor does it make sure that the transfer was successful. | |
1378 | ||
249888c8 | 1379 | Use libusb 1.0 asynchronous API. |
84f85aaa GE |
1380 | |
1381 | \param ftdi pointer to ftdi_context | |
579b006f JZ |
1382 | \param buf Buffer with the data |
1383 | \param size Size of the buffer | |
84f85aaa | 1384 | |
579b006f JZ |
1385 | \retval NULL: Some error happens when submit transfer |
1386 | \retval !NULL: Pointer to a ftdi_transfer_control | |
c201f80f | 1387 | */ |
579b006f JZ |
1388 | |
1389 | struct ftdi_transfer_control *ftdi_write_data_submit(struct ftdi_context *ftdi, unsigned char *buf, int size) | |
7cc9950e | 1390 | { |
579b006f JZ |
1391 | struct ftdi_transfer_control *tc; |
1392 | struct libusb_transfer *transfer = libusb_alloc_transfer(0); | |
1393 | int write_size, ret; | |
22d12cda | 1394 | |
22a1b5c1 TJ |
1395 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1396 | { | |
1397 | libusb_free_transfer(transfer); | |
1398 | return NULL; | |
1399 | } | |
1400 | ||
579b006f | 1401 | tc = (struct ftdi_transfer_control *) malloc (sizeof (*tc)); |
22d12cda | 1402 | |
579b006f JZ |
1403 | if (!tc || !transfer) |
1404 | return NULL; | |
22d12cda | 1405 | |
579b006f JZ |
1406 | tc->ftdi = ftdi; |
1407 | tc->completed = 0; | |
1408 | tc->buf = buf; | |
1409 | tc->size = size; | |
1410 | tc->offset = 0; | |
7cc9950e | 1411 | |
579b006f JZ |
1412 | if (size < ftdi->writebuffer_chunksize) |
1413 | write_size = size; | |
1414 | else | |
1415 | write_size = ftdi->writebuffer_chunksize; | |
22d12cda | 1416 | |
90ef163e YSL |
1417 | libusb_fill_bulk_transfer(transfer, ftdi->usb_dev, ftdi->in_ep, buf, |
1418 | write_size, ftdi_write_data_cb, tc, | |
1419 | ftdi->usb_write_timeout); | |
579b006f | 1420 | transfer->type = LIBUSB_TRANSFER_TYPE_BULK; |
7cc9950e | 1421 | |
579b006f JZ |
1422 | ret = libusb_submit_transfer(transfer); |
1423 | if (ret < 0) | |
1424 | { | |
1425 | libusb_free_transfer(transfer); | |
1426 | tc->completed = 1; | |
1427 | tc->transfer = NULL; | |
1428 | return NULL; | |
7cc9950e | 1429 | } |
579b006f JZ |
1430 | tc->transfer = transfer; |
1431 | ||
1432 | return tc; | |
7cc9950e GE |
1433 | } |
1434 | ||
1435 | /** | |
579b006f JZ |
1436 | Reads data from the chip. Does not wait for completion of the transfer |
1437 | nor does it make sure that the transfer was successful. | |
1438 | ||
249888c8 | 1439 | Use libusb 1.0 asynchronous API. |
7cc9950e GE |
1440 | |
1441 | \param ftdi pointer to ftdi_context | |
579b006f JZ |
1442 | \param buf Buffer with the data |
1443 | \param size Size of the buffer | |
4c9e3812 | 1444 | |
579b006f JZ |
1445 | \retval NULL: Some error happens when submit transfer |
1446 | \retval !NULL: Pointer to a ftdi_transfer_control | |
4c9e3812 | 1447 | */ |
579b006f JZ |
1448 | |
1449 | struct ftdi_transfer_control *ftdi_read_data_submit(struct ftdi_context *ftdi, unsigned char *buf, int size) | |
4c9e3812 | 1450 | { |
579b006f JZ |
1451 | struct ftdi_transfer_control *tc; |
1452 | struct libusb_transfer *transfer; | |
1453 | int ret; | |
22d12cda | 1454 | |
22a1b5c1 TJ |
1455 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1456 | return NULL; | |
1457 | ||
579b006f JZ |
1458 | tc = (struct ftdi_transfer_control *) malloc (sizeof (*tc)); |
1459 | if (!tc) | |
1460 | return NULL; | |
1461 | ||
1462 | tc->ftdi = ftdi; | |
1463 | tc->buf = buf; | |
1464 | tc->size = size; | |
1465 | ||
1466 | if (size <= ftdi->readbuffer_remaining) | |
7cc9950e | 1467 | { |
579b006f | 1468 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, size); |
7cc9950e | 1469 | |
579b006f JZ |
1470 | // Fix offsets |
1471 | ftdi->readbuffer_remaining -= size; | |
1472 | ftdi->readbuffer_offset += size; | |
7cc9950e | 1473 | |
579b006f | 1474 | /* printf("Returning bytes from buffer: %d - remaining: %d\n", size, ftdi->readbuffer_remaining); */ |
22d12cda | 1475 | |
579b006f JZ |
1476 | tc->completed = 1; |
1477 | tc->offset = size; | |
1478 | tc->transfer = NULL; | |
1479 | return tc; | |
1480 | } | |
4c9e3812 | 1481 | |
579b006f JZ |
1482 | tc->completed = 0; |
1483 | if (ftdi->readbuffer_remaining != 0) | |
1484 | { | |
1485 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, ftdi->readbuffer_remaining); | |
22d12cda | 1486 | |
579b006f JZ |
1487 | tc->offset = ftdi->readbuffer_remaining; |
1488 | } | |
1489 | else | |
1490 | tc->offset = 0; | |
22d12cda | 1491 | |
579b006f JZ |
1492 | transfer = libusb_alloc_transfer(0); |
1493 | if (!transfer) | |
1494 | { | |
1495 | free (tc); | |
1496 | return NULL; | |
1497 | } | |
22d12cda | 1498 | |
579b006f JZ |
1499 | ftdi->readbuffer_remaining = 0; |
1500 | ftdi->readbuffer_offset = 0; | |
1501 | ||
1502 | 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); | |
1503 | transfer->type = LIBUSB_TRANSFER_TYPE_BULK; | |
1504 | ||
1505 | ret = libusb_submit_transfer(transfer); | |
1506 | if (ret < 0) | |
1507 | { | |
1508 | libusb_free_transfer(transfer); | |
1509 | free (tc); | |
1510 | return NULL; | |
22d12cda | 1511 | } |
579b006f JZ |
1512 | tc->transfer = transfer; |
1513 | ||
1514 | return tc; | |
4c9e3812 GE |
1515 | } |
1516 | ||
1517 | /** | |
579b006f | 1518 | Wait for completion of the transfer. |
4c9e3812 | 1519 | |
249888c8 | 1520 | Use libusb 1.0 asynchronous API. |
4c9e3812 | 1521 | |
579b006f | 1522 | \param tc pointer to ftdi_transfer_control |
4c9e3812 | 1523 | |
579b006f JZ |
1524 | \retval < 0: Some error happens |
1525 | \retval >= 0: Data size transferred | |
4c9e3812 | 1526 | */ |
579b006f JZ |
1527 | |
1528 | int ftdi_transfer_data_done(struct ftdi_transfer_control *tc) | |
4c9e3812 GE |
1529 | { |
1530 | int ret; | |
4c9e3812 | 1531 | |
579b006f | 1532 | while (!tc->completed) |
22d12cda | 1533 | { |
29b1dfd9 | 1534 | ret = libusb_handle_events(tc->ftdi->usb_ctx); |
4c9e3812 | 1535 | if (ret < 0) |
579b006f JZ |
1536 | { |
1537 | if (ret == LIBUSB_ERROR_INTERRUPTED) | |
1538 | continue; | |
1539 | libusb_cancel_transfer(tc->transfer); | |
1540 | while (!tc->completed) | |
29b1dfd9 | 1541 | if (libusb_handle_events(tc->ftdi->usb_ctx) < 0) |
579b006f JZ |
1542 | break; |
1543 | libusb_free_transfer(tc->transfer); | |
1544 | free (tc); | |
579b006f JZ |
1545 | return ret; |
1546 | } | |
4c9e3812 GE |
1547 | } |
1548 | ||
90ef163e YSL |
1549 | ret = tc->offset; |
1550 | /** | |
1551 | * tc->transfer could be NULL if "(size <= ftdi->readbuffer_remaining)" | |
ef15fab5 | 1552 | * at ftdi_read_data_submit(). Therefore, we need to check it here. |
90ef163e | 1553 | **/ |
ef15fab5 TJ |
1554 | if (tc->transfer) |
1555 | { | |
1556 | if (tc->transfer->status != LIBUSB_TRANSFER_COMPLETED) | |
1557 | ret = -1; | |
1558 | libusb_free_transfer(tc->transfer); | |
90ef163e | 1559 | } |
579b006f JZ |
1560 | free(tc); |
1561 | return ret; | |
4c9e3812 | 1562 | } |
579b006f | 1563 | |
1941414d TJ |
1564 | /** |
1565 | Configure write buffer chunk size. | |
1566 | Default is 4096. | |
1567 | ||
1568 | \param ftdi pointer to ftdi_context | |
1569 | \param chunksize Chunk size | |
a3da1d95 | 1570 | |
1941414d | 1571 | \retval 0: all fine |
22a1b5c1 | 1572 | \retval -1: ftdi context invalid |
1941414d | 1573 | */ |
a8f46ddc TJ |
1574 | int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize) |
1575 | { | |
22a1b5c1 TJ |
1576 | if (ftdi == NULL) |
1577 | ftdi_error_return(-1, "ftdi context invalid"); | |
1578 | ||
948f9ada TJ |
1579 | ftdi->writebuffer_chunksize = chunksize; |
1580 | return 0; | |
1581 | } | |
1582 | ||
1941414d TJ |
1583 | /** |
1584 | Get write buffer chunk size. | |
1585 | ||
1586 | \param ftdi pointer to ftdi_context | |
1587 | \param chunksize Pointer to store chunk size in | |
948f9ada | 1588 | |
1941414d | 1589 | \retval 0: all fine |
22a1b5c1 | 1590 | \retval -1: ftdi context invalid |
1941414d | 1591 | */ |
a8f46ddc TJ |
1592 | int ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize) |
1593 | { | |
22a1b5c1 TJ |
1594 | if (ftdi == NULL) |
1595 | ftdi_error_return(-1, "ftdi context invalid"); | |
1596 | ||
948f9ada TJ |
1597 | *chunksize = ftdi->writebuffer_chunksize; |
1598 | return 0; | |
1599 | } | |
cbabb7d3 | 1600 | |
1941414d TJ |
1601 | /** |
1602 | Reads data in chunks (see ftdi_read_data_set_chunksize()) from the chip. | |
1603 | ||
1604 | Automatically strips the two modem status bytes transfered during every read. | |
948f9ada | 1605 | |
1941414d TJ |
1606 | \param ftdi pointer to ftdi_context |
1607 | \param buf Buffer to store data in | |
1608 | \param size Size of the buffer | |
1609 | ||
22a1b5c1 | 1610 | \retval -666: USB device unavailable |
579b006f | 1611 | \retval <0: error code from libusb_bulk_transfer() |
d77b0e94 | 1612 | \retval 0: no data was available |
1941414d TJ |
1613 | \retval >0: number of bytes read |
1614 | ||
1941414d | 1615 | */ |
a8f46ddc TJ |
1616 | int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size) |
1617 | { | |
579b006f | 1618 | int offset = 0, ret, i, num_of_chunks, chunk_remains; |
e2f12a4f | 1619 | int packet_size = ftdi->max_packet_size; |
579b006f | 1620 | int actual_length = 1; |
f2f00cb5 | 1621 | |
22a1b5c1 TJ |
1622 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1623 | ftdi_error_return(-666, "USB device unavailable"); | |
1624 | ||
e2f12a4f TJ |
1625 | // Packet size sanity check (avoid division by zero) |
1626 | if (packet_size == 0) | |
1627 | ftdi_error_return(-1, "max_packet_size is bogus (zero)"); | |
d9f0cce7 | 1628 | |
948f9ada | 1629 | // everything we want is still in the readbuffer? |
22d12cda TJ |
1630 | if (size <= ftdi->readbuffer_remaining) |
1631 | { | |
d9f0cce7 TJ |
1632 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, size); |
1633 | ||
1634 | // Fix offsets | |
1635 | ftdi->readbuffer_remaining -= size; | |
1636 | ftdi->readbuffer_offset += size; | |
1637 | ||
545820ce | 1638 | /* printf("Returning bytes from buffer: %d - remaining: %d\n", size, ftdi->readbuffer_remaining); */ |
d9f0cce7 TJ |
1639 | |
1640 | return size; | |
979a145c | 1641 | } |
948f9ada | 1642 | // something still in the readbuffer, but not enough to satisfy 'size'? |
22d12cda TJ |
1643 | if (ftdi->readbuffer_remaining != 0) |
1644 | { | |
d9f0cce7 | 1645 | memcpy (buf, ftdi->readbuffer+ftdi->readbuffer_offset, ftdi->readbuffer_remaining); |
979a145c | 1646 | |
d9f0cce7 TJ |
1647 | // Fix offset |
1648 | offset += ftdi->readbuffer_remaining; | |
948f9ada | 1649 | } |
948f9ada | 1650 | // do the actual USB read |
579b006f | 1651 | while (offset < size && actual_length > 0) |
22d12cda | 1652 | { |
d9f0cce7 TJ |
1653 | ftdi->readbuffer_remaining = 0; |
1654 | ftdi->readbuffer_offset = 0; | |
98452d97 | 1655 | /* returns how much received */ |
579b006f | 1656 | ret = libusb_bulk_transfer (ftdi->usb_dev, ftdi->out_ep, ftdi->readbuffer, ftdi->readbuffer_chunksize, &actual_length, ftdi->usb_read_timeout); |
c3d95b87 TJ |
1657 | if (ret < 0) |
1658 | ftdi_error_return(ret, "usb bulk read failed"); | |
98452d97 | 1659 | |
579b006f | 1660 | if (actual_length > 2) |
22d12cda | 1661 | { |
d9f0cce7 TJ |
1662 | // skip FTDI status bytes. |
1663 | // Maybe stored in the future to enable modem use | |
579b006f JZ |
1664 | num_of_chunks = actual_length / packet_size; |
1665 | chunk_remains = actual_length % packet_size; | |
1666 | //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 | 1667 | |
d9f0cce7 | 1668 | ftdi->readbuffer_offset += 2; |
579b006f | 1669 | actual_length -= 2; |
1c733d33 | 1670 | |
579b006f | 1671 | if (actual_length > packet_size - 2) |
22d12cda | 1672 | { |
1c733d33 | 1673 | for (i = 1; i < num_of_chunks; i++) |
f2f00cb5 DC |
1674 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, |
1675 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1676 | packet_size - 2); | |
22d12cda TJ |
1677 | if (chunk_remains > 2) |
1678 | { | |
f2f00cb5 DC |
1679 | memmove (ftdi->readbuffer+ftdi->readbuffer_offset+(packet_size - 2)*i, |
1680 | ftdi->readbuffer+ftdi->readbuffer_offset+packet_size*i, | |
1c733d33 | 1681 | chunk_remains-2); |
579b006f | 1682 | actual_length -= 2*num_of_chunks; |
22d12cda TJ |
1683 | } |
1684 | else | |
579b006f | 1685 | actual_length -= 2*(num_of_chunks-1)+chunk_remains; |
1c733d33 | 1686 | } |
22d12cda | 1687 | } |
579b006f | 1688 | else if (actual_length <= 2) |
22d12cda | 1689 | { |
d9f0cce7 TJ |
1690 | // no more data to read? |
1691 | return offset; | |
1692 | } | |
579b006f | 1693 | if (actual_length > 0) |
22d12cda | 1694 | { |
d9f0cce7 | 1695 | // data still fits in buf? |
579b006f | 1696 | if (offset+actual_length <= size) |
22d12cda | 1697 | { |
579b006f | 1698 | memcpy (buf+offset, ftdi->readbuffer+ftdi->readbuffer_offset, actual_length); |
545820ce | 1699 | //printf("buf[0] = %X, buf[1] = %X\n", buf[0], buf[1]); |
579b006f | 1700 | offset += actual_length; |
d9f0cce7 | 1701 | |
53ad271d | 1702 | /* Did we read exactly the right amount of bytes? */ |
d9f0cce7 | 1703 | if (offset == size) |
c4446c36 TJ |
1704 | //printf("read_data exact rem %d offset %d\n", |
1705 | //ftdi->readbuffer_remaining, offset); | |
d9f0cce7 | 1706 | return offset; |
22d12cda TJ |
1707 | } |
1708 | else | |
1709 | { | |
d9f0cce7 TJ |
1710 | // only copy part of the data or size <= readbuffer_chunksize |
1711 | int part_size = size-offset; | |
1712 | memcpy (buf+offset, ftdi->readbuffer+ftdi->readbuffer_offset, part_size); | |
98452d97 | 1713 | |
d9f0cce7 | 1714 | ftdi->readbuffer_offset += part_size; |
579b006f | 1715 | ftdi->readbuffer_remaining = actual_length-part_size; |
d9f0cce7 TJ |
1716 | offset += part_size; |
1717 | ||
579b006f JZ |
1718 | /* printf("Returning part: %d - size: %d - offset: %d - actual_length: %d - remaining: %d\n", |
1719 | part_size, size, offset, actual_length, ftdi->readbuffer_remaining); */ | |
d9f0cce7 TJ |
1720 | |
1721 | return offset; | |
1722 | } | |
1723 | } | |
cbabb7d3 | 1724 | } |
948f9ada | 1725 | // never reached |
29c4af7f | 1726 | return -127; |
a3da1d95 GE |
1727 | } |
1728 | ||
1941414d TJ |
1729 | /** |
1730 | Configure read buffer chunk size. | |
1731 | Default is 4096. | |
1732 | ||
1733 | Automatically reallocates the buffer. | |
a3da1d95 | 1734 | |
1941414d TJ |
1735 | \param ftdi pointer to ftdi_context |
1736 | \param chunksize Chunk size | |
1737 | ||
1738 | \retval 0: all fine | |
22a1b5c1 | 1739 | \retval -1: ftdi context invalid |
1941414d | 1740 | */ |
a8f46ddc TJ |
1741 | int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize) |
1742 | { | |
29c4af7f TJ |
1743 | unsigned char *new_buf; |
1744 | ||
22a1b5c1 TJ |
1745 | if (ftdi == NULL) |
1746 | ftdi_error_return(-1, "ftdi context invalid"); | |
1747 | ||
948f9ada TJ |
1748 | // Invalidate all remaining data |
1749 | ftdi->readbuffer_offset = 0; | |
1750 | ftdi->readbuffer_remaining = 0; | |
8de6eea4 JZ |
1751 | #ifdef __linux__ |
1752 | /* We can't set readbuffer_chunksize larger than MAX_BULK_BUFFER_LENGTH, | |
1753 | which is defined in libusb-1.0. Otherwise, each USB read request will | |
2e685a1f | 1754 | be divided into multiple URBs. This will cause issues on Linux kernel |
8de6eea4 JZ |
1755 | older than 2.6.32. */ |
1756 | if (chunksize > 16384) | |
1757 | chunksize = 16384; | |
1758 | #endif | |
948f9ada | 1759 | |
c3d95b87 TJ |
1760 | if ((new_buf = (unsigned char *)realloc(ftdi->readbuffer, chunksize)) == NULL) |
1761 | ftdi_error_return(-1, "out of memory for readbuffer"); | |
d9f0cce7 | 1762 | |
948f9ada TJ |
1763 | ftdi->readbuffer = new_buf; |
1764 | ftdi->readbuffer_chunksize = chunksize; | |
1765 | ||
1766 | return 0; | |
1767 | } | |
1768 | ||
1941414d TJ |
1769 | /** |
1770 | Get read buffer chunk size. | |
948f9ada | 1771 | |
1941414d TJ |
1772 | \param ftdi pointer to ftdi_context |
1773 | \param chunksize Pointer to store chunk size in | |
1774 | ||
1775 | \retval 0: all fine | |
22a1b5c1 | 1776 | \retval -1: FTDI context invalid |
1941414d | 1777 | */ |
a8f46ddc TJ |
1778 | int ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize) |
1779 | { | |
22a1b5c1 TJ |
1780 | if (ftdi == NULL) |
1781 | ftdi_error_return(-1, "FTDI context invalid"); | |
1782 | ||
948f9ada TJ |
1783 | *chunksize = ftdi->readbuffer_chunksize; |
1784 | return 0; | |
1785 | } | |
1786 | ||
1787 | ||
1941414d TJ |
1788 | /** |
1789 | Enable bitbang mode. | |
948f9ada | 1790 | |
fd282db3 | 1791 | \deprecated use \ref ftdi_set_bitmode with mode BITMODE_BITBANG instead |
1941414d TJ |
1792 | |
1793 | \param ftdi pointer to ftdi_context | |
1794 | \param bitmask Bitmask to configure lines. | |
1795 | HIGH/ON value configures a line as output. | |
1796 | ||
1797 | \retval 0: all fine | |
1798 | \retval -1: can't enable bitbang mode | |
22a1b5c1 | 1799 | \retval -2: USB device unavailable |
1941414d | 1800 | */ |
a8f46ddc TJ |
1801 | int ftdi_enable_bitbang(struct ftdi_context *ftdi, unsigned char bitmask) |
1802 | { | |
a3da1d95 GE |
1803 | unsigned short usb_val; |
1804 | ||
22a1b5c1 TJ |
1805 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1806 | ftdi_error_return(-2, "USB device unavailable"); | |
1807 | ||
d9f0cce7 | 1808 | usb_val = bitmask; // low byte: bitmask |
3119537f TJ |
1809 | /* FT2232C: Set bitbang_mode to 2 to enable SPI */ |
1810 | usb_val |= (ftdi->bitbang_mode << 8); | |
1811 | ||
579b006f JZ |
1812 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
1813 | SIO_SET_BITMODE_REQUEST, usb_val, ftdi->index, | |
1814 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 TJ |
1815 | ftdi_error_return(-1, "unable to enter bitbang mode. Perhaps not a BM type chip?"); |
1816 | ||
a3da1d95 GE |
1817 | ftdi->bitbang_enabled = 1; |
1818 | return 0; | |
1819 | } | |
1820 | ||
1941414d TJ |
1821 | /** |
1822 | Disable bitbang mode. | |
a3da1d95 | 1823 | |
1941414d TJ |
1824 | \param ftdi pointer to ftdi_context |
1825 | ||
1826 | \retval 0: all fine | |
1827 | \retval -1: can't disable bitbang mode | |
22a1b5c1 | 1828 | \retval -2: USB device unavailable |
1941414d | 1829 | */ |
a8f46ddc TJ |
1830 | int ftdi_disable_bitbang(struct ftdi_context *ftdi) |
1831 | { | |
22a1b5c1 TJ |
1832 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1833 | ftdi_error_return(-2, "USB device unavailable"); | |
1834 | ||
579b006f | 1835 | 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 | 1836 | ftdi_error_return(-1, "unable to leave bitbang mode. Perhaps not a BM type chip?"); |
a3da1d95 GE |
1837 | |
1838 | ftdi->bitbang_enabled = 0; | |
1839 | return 0; | |
1840 | } | |
1841 | ||
1941414d | 1842 | /** |
418aaa72 | 1843 | Enable/disable bitbang modes. |
a3da1d95 | 1844 | |
1941414d TJ |
1845 | \param ftdi pointer to ftdi_context |
1846 | \param bitmask Bitmask to configure lines. | |
1847 | HIGH/ON value configures a line as output. | |
fd282db3 | 1848 | \param mode Bitbang mode: use the values defined in \ref ftdi_mpsse_mode |
1941414d TJ |
1849 | |
1850 | \retval 0: all fine | |
1851 | \retval -1: can't enable bitbang mode | |
22a1b5c1 | 1852 | \retval -2: USB device unavailable |
1941414d | 1853 | */ |
c4446c36 TJ |
1854 | int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode) |
1855 | { | |
1856 | unsigned short usb_val; | |
1857 | ||
22a1b5c1 TJ |
1858 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1859 | ftdi_error_return(-2, "USB device unavailable"); | |
1860 | ||
c4446c36 TJ |
1861 | usb_val = bitmask; // low byte: bitmask |
1862 | usb_val |= (mode << 8); | |
579b006f JZ |
1863 | 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) |
1864 | ftdi_error_return(-1, "unable to configure bitbang mode. Perhaps not a 2232C type chip?"); | |
c4446c36 TJ |
1865 | |
1866 | ftdi->bitbang_mode = mode; | |
418aaa72 | 1867 | ftdi->bitbang_enabled = (mode == BITMODE_RESET) ? 0 : 1; |
c4446c36 TJ |
1868 | return 0; |
1869 | } | |
1870 | ||
1941414d | 1871 | /** |
418aaa72 | 1872 | Directly read pin state, circumventing the read buffer. Useful for bitbang mode. |
1941414d TJ |
1873 | |
1874 | \param ftdi pointer to ftdi_context | |
1875 | \param pins Pointer to store pins into | |
1876 | ||
1877 | \retval 0: all fine | |
1878 | \retval -1: read pins failed | |
22a1b5c1 | 1879 | \retval -2: USB device unavailable |
1941414d | 1880 | */ |
a8f46ddc TJ |
1881 | int ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins) |
1882 | { | |
22a1b5c1 TJ |
1883 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1884 | ftdi_error_return(-2, "USB device unavailable"); | |
1885 | ||
579b006f | 1886 | 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 | 1887 | ftdi_error_return(-1, "read pins failed"); |
a3da1d95 | 1888 | |
a3da1d95 GE |
1889 | return 0; |
1890 | } | |
1891 | ||
1941414d TJ |
1892 | /** |
1893 | Set latency timer | |
1894 | ||
1895 | The FTDI chip keeps data in the internal buffer for a specific | |
1896 | amount of time if the buffer is not full yet to decrease | |
1897 | load on the usb bus. | |
a3da1d95 | 1898 | |
1941414d TJ |
1899 | \param ftdi pointer to ftdi_context |
1900 | \param latency Value between 1 and 255 | |
1901 | ||
1902 | \retval 0: all fine | |
1903 | \retval -1: latency out of range | |
1904 | \retval -2: unable to set latency timer | |
22a1b5c1 | 1905 | \retval -3: USB device unavailable |
1941414d | 1906 | */ |
a8f46ddc TJ |
1907 | int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency) |
1908 | { | |
a3da1d95 GE |
1909 | unsigned short usb_val; |
1910 | ||
c3d95b87 TJ |
1911 | if (latency < 1) |
1912 | ftdi_error_return(-1, "latency out of range. Only valid for 1-255"); | |
a3da1d95 | 1913 | |
22a1b5c1 TJ |
1914 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1915 | ftdi_error_return(-3, "USB device unavailable"); | |
1916 | ||
d79d2e68 | 1917 | usb_val = latency; |
579b006f | 1918 | 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 |
1919 | ftdi_error_return(-2, "unable to set latency timer"); |
1920 | ||
a3da1d95 GE |
1921 | return 0; |
1922 | } | |
1923 | ||
1941414d TJ |
1924 | /** |
1925 | Get latency timer | |
a3da1d95 | 1926 | |
1941414d TJ |
1927 | \param ftdi pointer to ftdi_context |
1928 | \param latency Pointer to store latency value in | |
1929 | ||
1930 | \retval 0: all fine | |
1931 | \retval -1: unable to get latency timer | |
22a1b5c1 | 1932 | \retval -2: USB device unavailable |
1941414d | 1933 | */ |
a8f46ddc TJ |
1934 | int ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency) |
1935 | { | |
a3da1d95 | 1936 | unsigned short usb_val; |
22a1b5c1 TJ |
1937 | |
1938 | if (ftdi == NULL || ftdi->usb_dev == NULL) | |
1939 | ftdi_error_return(-2, "USB device unavailable"); | |
1940 | ||
579b006f | 1941 | 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 | 1942 | ftdi_error_return(-1, "reading latency timer failed"); |
a3da1d95 GE |
1943 | |
1944 | *latency = (unsigned char)usb_val; | |
1945 | return 0; | |
1946 | } | |
1947 | ||
1941414d | 1948 | /** |
1189b11a TJ |
1949 | Poll modem status information |
1950 | ||
1951 | This function allows the retrieve the two status bytes of the device. | |
1952 | The device sends these bytes also as a header for each read access | |
1953 | where they are discarded by ftdi_read_data(). The chip generates | |
1954 | the two stripped status bytes in the absence of data every 40 ms. | |
1955 | ||
1956 | Layout of the first byte: | |
1957 | - B0..B3 - must be 0 | |
1958 | - B4 Clear to send (CTS) | |
1959 | 0 = inactive | |
1960 | 1 = active | |
1961 | - B5 Data set ready (DTS) | |
1962 | 0 = inactive | |
1963 | 1 = active | |
1964 | - B6 Ring indicator (RI) | |
1965 | 0 = inactive | |
1966 | 1 = active | |
1967 | - B7 Receive line signal detect (RLSD) | |
1968 | 0 = inactive | |
1969 | 1 = active | |
1970 | ||
1971 | Layout of the second byte: | |
1972 | - B0 Data ready (DR) | |
1973 | - B1 Overrun error (OE) | |
1974 | - B2 Parity error (PE) | |
1975 | - B3 Framing error (FE) | |
1976 | - B4 Break interrupt (BI) | |
1977 | - B5 Transmitter holding register (THRE) | |
1978 | - B6 Transmitter empty (TEMT) | |
1979 | - B7 Error in RCVR FIFO | |
1980 | ||
1981 | \param ftdi pointer to ftdi_context | |
1982 | \param status Pointer to store status information in. Must be two bytes. | |
1983 | ||
1984 | \retval 0: all fine | |
1985 | \retval -1: unable to retrieve status information | |
22a1b5c1 | 1986 | \retval -2: USB device unavailable |
1189b11a TJ |
1987 | */ |
1988 | int ftdi_poll_modem_status(struct ftdi_context *ftdi, unsigned short *status) | |
1989 | { | |
1990 | char usb_val[2]; | |
1991 | ||
22a1b5c1 TJ |
1992 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
1993 | ftdi_error_return(-2, "USB device unavailable"); | |
1994 | ||
579b006f | 1995 | 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 |
1996 | ftdi_error_return(-1, "getting modem status failed"); |
1997 | ||
1998 | *status = (usb_val[1] << 8) | usb_val[0]; | |
1999 | ||
2000 | return 0; | |
2001 | } | |
2002 | ||
a7fb8440 TJ |
2003 | /** |
2004 | Set flowcontrol for ftdi chip | |
2005 | ||
2006 | \param ftdi pointer to ftdi_context | |
22d12cda TJ |
2007 | \param flowctrl flow control to use. should be |
2008 | SIO_DISABLE_FLOW_CTRL, SIO_RTS_CTS_HS, SIO_DTR_DSR_HS or SIO_XON_XOFF_HS | |
a7fb8440 TJ |
2009 | |
2010 | \retval 0: all fine | |
2011 | \retval -1: set flow control failed | |
22a1b5c1 | 2012 | \retval -2: USB device unavailable |
a7fb8440 TJ |
2013 | */ |
2014 | int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl) | |
2015 | { | |
22a1b5c1 TJ |
2016 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2017 | ftdi_error_return(-2, "USB device unavailable"); | |
2018 | ||
579b006f JZ |
2019 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2020 | SIO_SET_FLOW_CTRL_REQUEST, 0, (flowctrl | ftdi->index), | |
2021 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
a7fb8440 TJ |
2022 | ftdi_error_return(-1, "set flow control failed"); |
2023 | ||
2024 | return 0; | |
2025 | } | |
2026 | ||
2027 | /** | |
2028 | Set dtr line | |
2029 | ||
2030 | \param ftdi pointer to ftdi_context | |
2031 | \param state state to set line to (1 or 0) | |
2032 | ||
2033 | \retval 0: all fine | |
2034 | \retval -1: set dtr failed | |
22a1b5c1 | 2035 | \retval -2: USB device unavailable |
a7fb8440 TJ |
2036 | */ |
2037 | int ftdi_setdtr(struct ftdi_context *ftdi, int state) | |
2038 | { | |
2039 | unsigned short usb_val; | |
2040 | ||
22a1b5c1 TJ |
2041 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2042 | ftdi_error_return(-2, "USB device unavailable"); | |
2043 | ||
a7fb8440 TJ |
2044 | if (state) |
2045 | usb_val = SIO_SET_DTR_HIGH; | |
2046 | else | |
2047 | usb_val = SIO_SET_DTR_LOW; | |
2048 | ||
579b006f JZ |
2049 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2050 | SIO_SET_MODEM_CTRL_REQUEST, usb_val, ftdi->index, | |
2051 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
a7fb8440 TJ |
2052 | ftdi_error_return(-1, "set dtr failed"); |
2053 | ||
2054 | return 0; | |
2055 | } | |
2056 | ||
2057 | /** | |
2058 | Set rts line | |
2059 | ||
2060 | \param ftdi pointer to ftdi_context | |
2061 | \param state state to set line to (1 or 0) | |
2062 | ||
2063 | \retval 0: all fine | |
22a1b5c1 TJ |
2064 | \retval -1: set rts failed |
2065 | \retval -2: USB device unavailable | |
a7fb8440 TJ |
2066 | */ |
2067 | int ftdi_setrts(struct ftdi_context *ftdi, int state) | |
2068 | { | |
2069 | unsigned short usb_val; | |
2070 | ||
22a1b5c1 TJ |
2071 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2072 | ftdi_error_return(-2, "USB device unavailable"); | |
2073 | ||
a7fb8440 TJ |
2074 | if (state) |
2075 | usb_val = SIO_SET_RTS_HIGH; | |
2076 | else | |
2077 | usb_val = SIO_SET_RTS_LOW; | |
2078 | ||
579b006f JZ |
2079 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2080 | SIO_SET_MODEM_CTRL_REQUEST, usb_val, ftdi->index, | |
2081 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
a7fb8440 TJ |
2082 | ftdi_error_return(-1, "set of rts failed"); |
2083 | ||
2084 | return 0; | |
2085 | } | |
2086 | ||
1189b11a | 2087 | /** |
22a1b5c1 | 2088 | Set dtr and rts line in one pass |
9ecfef2a | 2089 | |
22a1b5c1 TJ |
2090 | \param ftdi pointer to ftdi_context |
2091 | \param dtr DTR state to set line to (1 or 0) | |
2092 | \param rts RTS state to set line to (1 or 0) | |
9ecfef2a | 2093 | |
22a1b5c1 TJ |
2094 | \retval 0: all fine |
2095 | \retval -1: set dtr/rts failed | |
2096 | \retval -2: USB device unavailable | |
9ecfef2a TJ |
2097 | */ |
2098 | int ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts) | |
2099 | { | |
2100 | unsigned short usb_val; | |
2101 | ||
22a1b5c1 TJ |
2102 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2103 | ftdi_error_return(-2, "USB device unavailable"); | |
2104 | ||
9ecfef2a | 2105 | if (dtr) |
22d12cda | 2106 | usb_val = SIO_SET_DTR_HIGH; |
9ecfef2a | 2107 | else |
22d12cda | 2108 | usb_val = SIO_SET_DTR_LOW; |
9ecfef2a TJ |
2109 | |
2110 | if (rts) | |
22d12cda | 2111 | usb_val |= SIO_SET_RTS_HIGH; |
9ecfef2a | 2112 | else |
22d12cda | 2113 | usb_val |= SIO_SET_RTS_LOW; |
9ecfef2a | 2114 | |
579b006f JZ |
2115 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
2116 | SIO_SET_MODEM_CTRL_REQUEST, usb_val, ftdi->index, | |
2117 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
22d12cda | 2118 | ftdi_error_return(-1, "set of rts/dtr failed"); |
9ecfef2a TJ |
2119 | |
2120 | return 0; | |
2121 | } | |
2122 | ||
2123 | /** | |
1189b11a TJ |
2124 | Set the special event character |
2125 | ||
2126 | \param ftdi pointer to ftdi_context | |
2127 | \param eventch Event character | |
2128 | \param enable 0 to disable the event character, non-zero otherwise | |
2129 | ||
2130 | \retval 0: all fine | |
2131 | \retval -1: unable to set event character | |
22a1b5c1 | 2132 | \retval -2: USB device unavailable |
1189b11a TJ |
2133 | */ |
2134 | int ftdi_set_event_char(struct ftdi_context *ftdi, | |
22d12cda | 2135 | unsigned char eventch, unsigned char enable) |
1189b11a TJ |
2136 | { |
2137 | unsigned short usb_val; | |
2138 | ||
22a1b5c1 TJ |
2139 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2140 | ftdi_error_return(-2, "USB device unavailable"); | |
2141 | ||
1189b11a TJ |
2142 | usb_val = eventch; |
2143 | if (enable) | |
2144 | usb_val |= 1 << 8; | |
2145 | ||
579b006f | 2146 | 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 |
2147 | ftdi_error_return(-1, "setting event character failed"); |
2148 | ||
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | /** | |
2153 | Set error character | |
2154 | ||
2155 | \param ftdi pointer to ftdi_context | |
2156 | \param errorch Error character | |
2157 | \param enable 0 to disable the error character, non-zero otherwise | |
2158 | ||
2159 | \retval 0: all fine | |
2160 | \retval -1: unable to set error character | |
22a1b5c1 | 2161 | \retval -2: USB device unavailable |
1189b11a TJ |
2162 | */ |
2163 | int ftdi_set_error_char(struct ftdi_context *ftdi, | |
22d12cda | 2164 | unsigned char errorch, unsigned char enable) |
1189b11a TJ |
2165 | { |
2166 | unsigned short usb_val; | |
2167 | ||
22a1b5c1 TJ |
2168 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2169 | ftdi_error_return(-2, "USB device unavailable"); | |
2170 | ||
1189b11a TJ |
2171 | usb_val = errorch; |
2172 | if (enable) | |
2173 | usb_val |= 1 << 8; | |
2174 | ||
579b006f | 2175 | 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 |
2176 | ftdi_error_return(-1, "setting error character failed"); |
2177 | ||
2178 | return 0; | |
2179 | } | |
2180 | ||
2181 | /** | |
1941414d | 2182 | Init eeprom with default values. |
a35aa9bd | 2183 | \param ftdi pointer to ftdi_context |
f14f84d3 UB |
2184 | \param manufacturer String to use as Manufacturer |
2185 | \param product String to use as Product description | |
2186 | \param serial String to use as Serial number description | |
4e74064b | 2187 | |
f14f84d3 UB |
2188 | \retval 0: all fine |
2189 | \retval -1: No struct ftdi_context | |
2190 | \retval -2: No struct ftdi_eeprom | |
1941414d | 2191 | */ |
f14f84d3 | 2192 | int ftdi_eeprom_initdefaults(struct ftdi_context *ftdi, char * manufacturer, |
74e8e79d | 2193 | char * product, char * serial) |
a8f46ddc | 2194 | { |
c0a96aed | 2195 | struct ftdi_eeprom *eeprom; |
f505134f | 2196 | |
c0a96aed | 2197 | if (ftdi == NULL) |
f14f84d3 | 2198 | ftdi_error_return(-1, "No struct ftdi_context"); |
c0a96aed UB |
2199 | |
2200 | if (ftdi->eeprom == NULL) | |
f14f84d3 | 2201 | ftdi_error_return(-2,"No struct ftdi_eeprom"); |
22a1b5c1 | 2202 | |
c0a96aed | 2203 | eeprom = ftdi->eeprom; |
a02587d5 | 2204 | memset(eeprom, 0, sizeof(struct ftdi_eeprom)); |
c0a96aed | 2205 | |
f396dbad | 2206 | eeprom->vendor_id = 0x0403; |
a02587d5 | 2207 | eeprom->use_serial = USE_SERIAL_NUM; |
6855afda UB |
2208 | if((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM) || |
2209 | (ftdi->type == TYPE_R)) | |
a02587d5 UB |
2210 | eeprom->product_id = 0x6001; |
2211 | else | |
2212 | eeprom->product_id = 0x6010; | |
b1859923 UB |
2213 | if (ftdi->type == TYPE_AM) |
2214 | eeprom->usb_version = 0x0101; | |
2215 | else | |
2216 | eeprom->usb_version = 0x0200; | |
a886436a | 2217 | eeprom->max_power = 100; |
d9f0cce7 | 2218 | |
74e8e79d UB |
2219 | if (eeprom->manufacturer) |
2220 | free (eeprom->manufacturer); | |
b8aa7b35 | 2221 | eeprom->manufacturer = NULL; |
74e8e79d UB |
2222 | if (manufacturer) |
2223 | { | |
2224 | eeprom->manufacturer = malloc(strlen(manufacturer)+1); | |
2225 | if (eeprom->manufacturer) | |
2226 | strcpy(eeprom->manufacturer, manufacturer); | |
2227 | } | |
2228 | ||
2229 | if (eeprom->product) | |
2230 | free (eeprom->product); | |
b8aa7b35 | 2231 | eeprom->product = NULL; |
74e8e79d UB |
2232 | { |
2233 | eeprom->product = malloc(strlen(product)+1); | |
2234 | if (eeprom->product) | |
2235 | strcpy(eeprom->product, product); | |
2236 | } | |
2237 | ||
2238 | if (eeprom->serial) | |
2239 | free (eeprom->serial); | |
b8aa7b35 | 2240 | eeprom->serial = NULL; |
74e8e79d UB |
2241 | if (serial) |
2242 | { | |
2243 | eeprom->serial = malloc(strlen(serial)+1); | |
2244 | if (eeprom->serial) | |
2245 | strcpy(eeprom->serial, serial); | |
2246 | } | |
2247 | ||
c201f80f | 2248 | |
a02587d5 | 2249 | if(ftdi->type == TYPE_R) |
a4980043 | 2250 | { |
a886436a | 2251 | eeprom->max_power = 90; |
a02587d5 | 2252 | eeprom->size = 0x80; |
a4980043 UB |
2253 | eeprom->cbus_function[0] = CBUS_TXLED; |
2254 | eeprom->cbus_function[1] = CBUS_RXLED; | |
2255 | eeprom->cbus_function[2] = CBUS_TXDEN; | |
2256 | eeprom->cbus_function[3] = CBUS_PWREN; | |
2257 | eeprom->cbus_function[4] = CBUS_SLEEP; | |
2258 | } | |
a02587d5 UB |
2259 | else |
2260 | eeprom->size = -1; | |
f14f84d3 | 2261 | return 0; |
b8aa7b35 TJ |
2262 | } |
2263 | ||
1941414d | 2264 | /** |
a35aa9bd | 2265 | Build binary buffer from ftdi_eeprom structure. |
22a1b5c1 | 2266 | Output is suitable for ftdi_write_eeprom(). |
b8aa7b35 | 2267 | |
a35aa9bd | 2268 | \param ftdi pointer to ftdi_context |
1941414d | 2269 | |
f505134f | 2270 | \retval >0: free eeprom size |
22a1b5c1 TJ |
2271 | \retval -1: eeprom size (128 bytes) exceeded by custom strings |
2272 | \retval -2: Invalid eeprom pointer | |
f505134f HK |
2273 | \retval -3: Invalid cbus function setting |
2274 | \retval -4: Chip doesn't support invert | |
2275 | \retval -5: Chip doesn't support high current drive | |
2b9a3c82 | 2276 | \retval -6: No connected EEPROM or EEPROM Type unknown |
b8aa7b35 | 2277 | */ |
a35aa9bd | 2278 | int ftdi_eeprom_build(struct ftdi_context *ftdi) |
a8f46ddc | 2279 | { |
e2bbd9af | 2280 | unsigned char i, j, eeprom_size_mask; |
b8aa7b35 TJ |
2281 | unsigned short checksum, value; |
2282 | unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0; | |
2283 | int size_check; | |
c0a96aed | 2284 | struct ftdi_eeprom *eeprom; |
a35aa9bd | 2285 | unsigned char * output; |
b8aa7b35 | 2286 | |
c0a96aed | 2287 | if (ftdi == NULL) |
cc9c9d58 | 2288 | ftdi_error_return(-2,"No context"); |
c0a96aed | 2289 | if (ftdi->eeprom == NULL) |
cc9c9d58 | 2290 | ftdi_error_return(-2,"No eeprom structure"); |
c0a96aed UB |
2291 | |
2292 | eeprom= ftdi->eeprom; | |
a35aa9bd | 2293 | output = eeprom->buf; |
22a1b5c1 | 2294 | |
2b9a3c82 | 2295 | if(eeprom->chip == -1) |
4e74064b | 2296 | ftdi_error_return(-5,"No connected EEPROM or EEPROM type unknown"); |
2b9a3c82 | 2297 | |
f75bf139 UB |
2298 | if ((eeprom->chip == 0x56) || (eeprom->chip == 0x66)) |
2299 | eeprom->size = 0x100; | |
2300 | else | |
2301 | eeprom->size = 0x80; | |
2302 | ||
b8aa7b35 | 2303 | if (eeprom->manufacturer != NULL) |
d9f0cce7 | 2304 | manufacturer_size = strlen(eeprom->manufacturer); |
b8aa7b35 | 2305 | if (eeprom->product != NULL) |
d9f0cce7 | 2306 | product_size = strlen(eeprom->product); |
b8aa7b35 | 2307 | if (eeprom->serial != NULL) |
d9f0cce7 | 2308 | serial_size = strlen(eeprom->serial); |
b8aa7b35 | 2309 | |
f4562880 UB |
2310 | size_check = 0x80; |
2311 | switch(ftdi->type) | |
2312 | { | |
2313 | case TYPE_2232H: | |
2314 | case TYPE_4232H: | |
2315 | size_check -= 4; | |
2316 | case TYPE_R: | |
2317 | size_check -= 4; | |
2318 | case TYPE_2232C: | |
2319 | size_check -= 4; | |
2320 | case TYPE_AM: | |
2321 | case TYPE_BM: | |
2322 | size_check -= 0x14*2; | |
2323 | } | |
2324 | ||
b8aa7b35 TJ |
2325 | size_check -= manufacturer_size*2; |
2326 | size_check -= product_size*2; | |
2327 | size_check -= serial_size*2; | |
2328 | ||
f4562880 | 2329 | /* Space for the string type and pointer bytes */ |
802a949e | 2330 | size_check -= -9; |
f4562880 | 2331 | |
b8aa7b35 TJ |
2332 | // eeprom size exceeded? |
2333 | if (size_check < 0) | |
d9f0cce7 | 2334 | return (-1); |
b8aa7b35 TJ |
2335 | |
2336 | // empty eeprom | |
a35aa9bd | 2337 | memset (ftdi->eeprom->buf, 0, FTDI_MAX_EEPROM_SIZE); |
b8aa7b35 | 2338 | |
93738c79 UB |
2339 | // Bytes and Bits set for all Types |
2340 | ||
b8aa7b35 TJ |
2341 | // Addr 02: Vendor ID |
2342 | output[0x02] = eeprom->vendor_id; | |
2343 | output[0x03] = eeprom->vendor_id >> 8; | |
2344 | ||
2345 | // Addr 04: Product ID | |
2346 | output[0x04] = eeprom->product_id; | |
2347 | output[0x05] = eeprom->product_id >> 8; | |
2348 | ||
2349 | // Addr 06: Device release number (0400h for BM features) | |
2350 | output[0x06] = 0x00; | |
6123f7ab | 2351 | switch (ftdi->type) { |
f505134f HK |
2352 | case TYPE_AM: |
2353 | output[0x07] = 0x02; | |
2354 | break; | |
2355 | case TYPE_BM: | |
2356 | output[0x07] = 0x04; | |
2357 | break; | |
2358 | case TYPE_2232C: | |
2359 | output[0x07] = 0x05; | |
2360 | break; | |
2361 | case TYPE_R: | |
2362 | output[0x07] = 0x06; | |
2363 | break; | |
6123f7ab UB |
2364 | case TYPE_2232H: |
2365 | output[0x07] = 0x07; | |
2366 | break; | |
2367 | case TYPE_4232H: | |
2368 | output[0x07] = 0x08; | |
2369 | break; | |
f505134f HK |
2370 | default: |
2371 | output[0x07] = 0x00; | |
2372 | } | |
b8aa7b35 TJ |
2373 | |
2374 | // Addr 08: Config descriptor | |
8fae3e8e TJ |
2375 | // Bit 7: always 1 |
2376 | // Bit 6: 1 if this device is self powered, 0 if bus powered | |
2377 | // Bit 5: 1 if this device uses remote wakeup | |
37186e34 | 2378 | // Bit 4-0: reserved - 0 |
5a1dcd55 | 2379 | j = 0x80; |
b8aa7b35 | 2380 | if (eeprom->self_powered == 1) |
5a1dcd55 | 2381 | j |= 0x40; |
b8aa7b35 | 2382 | if (eeprom->remote_wakeup == 1) |
5a1dcd55 | 2383 | j |= 0x20; |
b8aa7b35 TJ |
2384 | output[0x08] = j; |
2385 | ||
2386 | // Addr 09: Max power consumption: max power = value * 2 mA | |
bb5ec68a | 2387 | output[0x09] = eeprom->max_power>>1; |
d9f0cce7 | 2388 | |
93738c79 UB |
2389 | if(ftdi->type != TYPE_AM) |
2390 | { | |
2391 | // Addr 0A: Chip configuration | |
2392 | // Bit 7: 0 - reserved | |
2393 | // Bit 6: 0 - reserved | |
2394 | // Bit 5: 0 - reserved | |
2395 | // Bit 4: 1 - Change USB version | |
2396 | // Bit 3: 1 - Use the serial number string | |
2397 | // Bit 2: 1 - Enable suspend pull downs for lower power | |
2398 | // Bit 1: 1 - Out EndPoint is Isochronous | |
2399 | // Bit 0: 1 - In EndPoint is Isochronous | |
2400 | // | |
2401 | j = 0; | |
2402 | if (eeprom->in_is_isochronous == 1) | |
2403 | j = j | 1; | |
2404 | if (eeprom->out_is_isochronous == 1) | |
2405 | j = j | 2; | |
2406 | output[0x0A] = j; | |
2407 | } | |
f505134f | 2408 | |
b8aa7b35 | 2409 | // Dynamic content |
93738c79 UB |
2410 | // Strings start at 0x94 (TYPE_AM, TYPE_BM) |
2411 | // 0x96 (TYPE_2232C), 0x98 (TYPE_R) and 0x9a (TYPE_x232H) | |
2412 | i = 0; | |
2413 | switch(ftdi->type) | |
2414 | { | |
2415 | case TYPE_2232H: | |
2416 | case TYPE_4232H: | |
2417 | i += 2; | |
2418 | case TYPE_R: | |
2419 | i += 2; | |
2420 | case TYPE_2232C: | |
2421 | i += 2; | |
2422 | case TYPE_AM: | |
2423 | case TYPE_BM: | |
2424 | i += 0x94; | |
f505134f | 2425 | } |
93738c79 | 2426 | /* Wrap around 0x80 for 128 byte EEPROMS (Internale and 93x46) */ |
e2bbd9af | 2427 | eeprom_size_mask = eeprom->size -1; |
c201f80f | 2428 | |
93738c79 UB |
2429 | // Addr 0E: Offset of the manufacturer string + 0x80, calculated later |
2430 | // Addr 0F: Length of manufacturer string | |
22d12cda | 2431 | // Output manufacturer |
93738c79 | 2432 | output[0x0E] = i; // calculate offset |
e2bbd9af TJ |
2433 | output[i & eeprom_size_mask] = manufacturer_size*2 + 2, i++; |
2434 | output[i & eeprom_size_mask] = 0x03, i++; // type: string | |
22d12cda TJ |
2435 | for (j = 0; j < manufacturer_size; j++) |
2436 | { | |
e2bbd9af TJ |
2437 | output[i & eeprom_size_mask] = eeprom->manufacturer[j], i++; |
2438 | output[i & eeprom_size_mask] = 0x00, i++; | |
b8aa7b35 | 2439 | } |
93738c79 | 2440 | output[0x0F] = manufacturer_size*2 + 2; |
b8aa7b35 | 2441 | |
93738c79 UB |
2442 | // Addr 10: Offset of the product string + 0x80, calculated later |
2443 | // Addr 11: Length of product string | |
c201f80f | 2444 | output[0x10] = i | 0x80; // calculate offset |
e2bbd9af TJ |
2445 | output[i & eeprom_size_mask] = product_size*2 + 2, i++; |
2446 | output[i & eeprom_size_mask] = 0x03, i++; | |
22d12cda TJ |
2447 | for (j = 0; j < product_size; j++) |
2448 | { | |
e2bbd9af TJ |
2449 | output[i & eeprom_size_mask] = eeprom->product[j], i++; |
2450 | output[i & eeprom_size_mask] = 0x00, i++; | |
b8aa7b35 | 2451 | } |
93738c79 | 2452 | output[0x11] = product_size*2 + 2; |
37186e34 | 2453 | |
93738c79 UB |
2454 | // Addr 12: Offset of the serial string + 0x80, calculated later |
2455 | // Addr 13: Length of serial string | |
c201f80f | 2456 | output[0x12] = i | 0x80; // calculate offset |
e2bbd9af TJ |
2457 | output[i & eeprom_size_mask] = serial_size*2 + 2, i++; |
2458 | output[i & eeprom_size_mask] = 0x03, i++; | |
22d12cda TJ |
2459 | for (j = 0; j < serial_size; j++) |
2460 | { | |
e2bbd9af TJ |
2461 | output[i & eeprom_size_mask] = eeprom->serial[j], i++; |
2462 | output[i & eeprom_size_mask] = 0x00, i++; | |
b8aa7b35 | 2463 | } |
e2bbd9af | 2464 | output[i & eeprom_size_mask] = 0x02; /* as seen when written with FTD2XX */ |
802a949e | 2465 | i++; |
e2bbd9af | 2466 | output[i & eeprom_size_mask] = 0x03; /* as seen when written with FTD2XX */ |
802a949e | 2467 | i++; |
e2bbd9af | 2468 | output[i & eeprom_size_mask] = eeprom->is_not_pnp; /* as seen when written with FTD2XX */ |
802a949e UB |
2469 | i++; |
2470 | ||
93738c79 | 2471 | output[0x13] = serial_size*2 + 2; |
b8aa7b35 | 2472 | |
bf2f6ef7 UB |
2473 | if(ftdi->type > TYPE_AM) /*use_serial not used in AM devices*/ |
2474 | { | |
2475 | if (eeprom->use_serial == USE_SERIAL_NUM ) | |
2476 | output[0x0A] |= USE_SERIAL_NUM; | |
2477 | else | |
2478 | output[0x0A] &= ~USE_SERIAL_NUM; | |
2479 | } | |
93738c79 | 2480 | /* Fixme: ftd2xx seems to append 0x02, 0x03 and 0x01 for PnP = 0 or 0x00 else */ |
b8aa7b35 | 2481 | // calculate checksum |
3802140c UB |
2482 | |
2483 | /* Bytes and Bits specific to (some) types | |
2484 | Write linear, as this allows easier fixing*/ | |
2485 | switch(ftdi->type) | |
2486 | { | |
2487 | case TYPE_AM: | |
2488 | break; | |
2489 | case TYPE_BM: | |
2490 | output[0x0C] = eeprom->usb_version & 0xff; | |
2491 | output[0x0D] = (eeprom->usb_version>>8) & 0xff; | |
3802140c UB |
2492 | output[0x14] = eeprom->chip; |
2493 | break; | |
2494 | case TYPE_2232C: | |
2495 | ||
2496 | output[0x00] = (eeprom->channel_a_type); | |
2497 | if ( eeprom->channel_a_driver == DRIVER_VCP) | |
2498 | output[0x00] |= DRIVER_VCP; | |
2499 | else | |
2500 | output[0x00] &= ~DRIVER_VCP; | |
4e74064b | 2501 | |
3802140c UB |
2502 | if ( eeprom->high_current_a == HIGH_CURRENT_DRIVE) |
2503 | output[0x00] |= HIGH_CURRENT_DRIVE; | |
2504 | else | |
2505 | output[0x00] &= ~HIGH_CURRENT_DRIVE; | |
2506 | ||
2507 | output[0x01] = (eeprom->channel_b_type); | |
2508 | if ( eeprom->channel_b_driver == DRIVER_VCP) | |
2509 | output[0x01] |= DRIVER_VCP; | |
2510 | else | |
2511 | output[0x01] &= ~DRIVER_VCP; | |
4e74064b | 2512 | |
3802140c UB |
2513 | if ( eeprom->high_current_b == HIGH_CURRENT_DRIVE) |
2514 | output[0x01] |= HIGH_CURRENT_DRIVE; | |
2515 | else | |
2516 | output[0x01] &= ~HIGH_CURRENT_DRIVE; | |
2517 | ||
2518 | if (eeprom->in_is_isochronous == 1) | |
2519 | output[0x0A] |= 0x1; | |
2520 | else | |
2521 | output[0x0A] &= ~0x1; | |
2522 | if (eeprom->out_is_isochronous == 1) | |
2523 | output[0x0A] |= 0x2; | |
2524 | else | |
2525 | output[0x0A] &= ~0x2; | |
2526 | if (eeprom->suspend_pull_downs == 1) | |
2527 | output[0x0A] |= 0x4; | |
2528 | else | |
2529 | output[0x0A] &= ~0x4; | |
3802140c UB |
2530 | output[0x0C] = eeprom->usb_version & 0xff; |
2531 | output[0x0D] = (eeprom->usb_version>>8) & 0xff; | |
2532 | output[0x14] = eeprom->chip; | |
2533 | break; | |
2534 | case TYPE_R: | |
2535 | if(eeprom->high_current == HIGH_CURRENT_DRIVE_R) | |
2536 | output[0x00] |= HIGH_CURRENT_DRIVE_R; | |
2537 | output[0x01] = 0x40; /* Hard coded Endpoint Size*/ | |
4e74064b | 2538 | |
3802140c UB |
2539 | if (eeprom->suspend_pull_downs == 1) |
2540 | output[0x0A] |= 0x4; | |
2541 | else | |
2542 | output[0x0A] &= ~0x4; | |
3802140c UB |
2543 | output[0x0B] = eeprom->invert; |
2544 | output[0x0C] = eeprom->usb_version & 0xff; | |
2545 | output[0x0D] = (eeprom->usb_version>>8) & 0xff; | |
4e74064b | 2546 | |
3802140c | 2547 | if(eeprom->cbus_function[0] > CBUS_BB) |
a4980043 | 2548 | output[0x14] = CBUS_TXLED; |
3802140c UB |
2549 | else |
2550 | output[0x14] = eeprom->cbus_function[0]; | |
4e74064b | 2551 | |
3802140c | 2552 | if(eeprom->cbus_function[1] > CBUS_BB) |
a4980043 | 2553 | output[0x14] |= CBUS_RXLED<<4; |
3802140c | 2554 | else |
a4980043 | 2555 | output[0x14] |= eeprom->cbus_function[1]<<4; |
4e74064b | 2556 | |
3802140c | 2557 | if(eeprom->cbus_function[2] > CBUS_BB) |
a4980043 | 2558 | output[0x15] = CBUS_TXDEN; |
3802140c | 2559 | else |
a4980043 | 2560 | output[0x15] = eeprom->cbus_function[2]; |
4e74064b | 2561 | |
3802140c | 2562 | if(eeprom->cbus_function[3] > CBUS_BB) |
a4980043 | 2563 | output[0x15] |= CBUS_PWREN<<4; |
3802140c | 2564 | else |
a4980043 | 2565 | output[0x15] |= eeprom->cbus_function[3]<<4; |
4e74064b | 2566 | |
a4980043 UB |
2567 | if(eeprom->cbus_function[4] > CBUS_CLK6) |
2568 | output[0x16] = CBUS_SLEEP; | |
3802140c | 2569 | else |
a4980043 | 2570 | output[0x16] = eeprom->cbus_function[4]; |
3802140c UB |
2571 | break; |
2572 | case TYPE_2232H: | |
2573 | output[0x00] = (eeprom->channel_a_type); | |
2574 | if ( eeprom->channel_a_driver == DRIVER_VCP) | |
2575 | output[0x00] |= DRIVER_VCP; | |
2576 | else | |
2577 | output[0x00] &= ~DRIVER_VCP; | |
4e74064b | 2578 | |
3802140c UB |
2579 | output[0x01] = (eeprom->channel_b_type); |
2580 | if ( eeprom->channel_b_driver == DRIVER_VCP) | |
2581 | output[0x01] |= DRIVER_VCP; | |
2582 | else | |
2583 | output[0x01] &= ~DRIVER_VCP; | |
2584 | if(eeprom->suspend_dbus7 == SUSPEND_DBUS7) | |
2585 | output[0x01] |= SUSPEND_DBUS7; | |
2586 | else | |
2587 | output[0x01] &= ~SUSPEND_DBUS7; | |
4e74064b | 2588 | |
6e6a1c3f UB |
2589 | if (eeprom->suspend_pull_downs == 1) |
2590 | output[0x0A] |= 0x4; | |
2591 | else | |
2592 | output[0x0A] &= ~0x4; | |
2593 | ||
3802140c UB |
2594 | if(eeprom->group0_drive > DRIVE_16MA) |
2595 | output[0x0c] |= DRIVE_16MA; | |
2596 | else | |
2597 | output[0x0c] |= eeprom->group0_drive; | |
2598 | if (eeprom->group0_schmitt == IS_SCHMITT) | |
2599 | output[0x0c] |= IS_SCHMITT; | |
2600 | if (eeprom->group0_slew == SLOW_SLEW) | |
2601 | output[0x0c] |= SLOW_SLEW; | |
2602 | ||
2603 | if(eeprom->group1_drive > DRIVE_16MA) | |
2604 | output[0x0c] |= DRIVE_16MA<<4; | |
2605 | else | |
2606 | output[0x0c] |= eeprom->group1_drive<<4; | |
2607 | if (eeprom->group1_schmitt == IS_SCHMITT) | |
2608 | output[0x0c] |= IS_SCHMITT<<4; | |
2609 | if (eeprom->group1_slew == SLOW_SLEW) | |
2610 | output[0x0c] |= SLOW_SLEW<<4; | |
4e74064b | 2611 | |
3802140c UB |
2612 | if(eeprom->group2_drive > DRIVE_16MA) |
2613 | output[0x0d] |= DRIVE_16MA; | |
2614 | else | |
2615 | output[0x0d] |= eeprom->group2_drive; | |
2616 | if (eeprom->group2_schmitt == IS_SCHMITT) | |
2617 | output[0x0d] |= IS_SCHMITT; | |
2618 | if (eeprom->group2_slew == SLOW_SLEW) | |
2619 | output[0x0d] |= SLOW_SLEW; | |
2620 | ||
2621 | if(eeprom->group3_drive > DRIVE_16MA) | |
2622 | output[0x0d] |= DRIVE_16MA<<4; | |
2623 | else | |
2624 | output[0x0d] |= eeprom->group3_drive<<4; | |
2625 | if (eeprom->group3_schmitt == IS_SCHMITT) | |
2626 | output[0x0d] |= IS_SCHMITT<<4; | |
2627 | if (eeprom->group3_slew == SLOW_SLEW) | |
2628 | output[0x0d] |= SLOW_SLEW<<4; | |
2629 | ||
2630 | output[0x18] = eeprom->chip; | |
2631 | ||
2632 | break; | |
e27531f4 UB |
2633 | case TYPE_4232H: |
2634 | fprintf(stderr,"FIXME: Build FT4232H specific EEPROM settings\n"); | |
3802140c UB |
2635 | } |
2636 | ||
cbf65673 | 2637 | // calculate checksum |
b8aa7b35 | 2638 | checksum = 0xAAAA; |
d9f0cce7 | 2639 | |
22d12cda TJ |
2640 | for (i = 0; i < eeprom->size/2-1; i++) |
2641 | { | |
d9f0cce7 TJ |
2642 | value = output[i*2]; |
2643 | value += output[(i*2)+1] << 8; | |
b8aa7b35 | 2644 | |
d9f0cce7 TJ |
2645 | checksum = value^checksum; |
2646 | checksum = (checksum << 1) | (checksum >> 15); | |
b8aa7b35 TJ |
2647 | } |
2648 | ||
c201f80f TJ |
2649 | output[eeprom->size-2] = checksum; |
2650 | output[eeprom->size-1] = checksum >> 8; | |
b8aa7b35 | 2651 | |
8ed61121 | 2652 | return size_check; |
b8aa7b35 TJ |
2653 | } |
2654 | ||
4af1d1bb MK |
2655 | /** |
2656 | Decode binary EEPROM image into an ftdi_eeprom structure. | |
2657 | ||
a35aa9bd UB |
2658 | \param ftdi pointer to ftdi_context |
2659 | \param verbose Decode EEPROM on stdout | |
2660 | ||
4af1d1bb MK |
2661 | \retval 0: all fine |
2662 | \retval -1: something went wrong | |
2663 | ||
2664 | FIXME: How to pass size? How to handle size field in ftdi_eeprom? | |
2665 | FIXME: Strings are malloc'ed here and should be freed somewhere | |
2666 | */ | |
a35aa9bd | 2667 | int ftdi_eeprom_decode(struct ftdi_context *ftdi, int verbose) |
b56d5a64 MK |
2668 | { |
2669 | unsigned char i, j; | |
2670 | unsigned short checksum, eeprom_checksum, value; | |
2671 | unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0; | |
f2cd9fd5 | 2672 | int eeprom_size; |
c0a96aed | 2673 | struct ftdi_eeprom *eeprom; |
a35aa9bd | 2674 | unsigned char *buf = ftdi->eeprom->buf; |
38801bf8 | 2675 | int release; |
22a1b5c1 | 2676 | |
c0a96aed | 2677 | if (ftdi == NULL) |
cc9c9d58 | 2678 | ftdi_error_return(-1,"No context"); |
c0a96aed | 2679 | if (ftdi->eeprom == NULL) |
6cd4f922 | 2680 | ftdi_error_return(-1,"No eeprom structure"); |
f2cd9fd5 | 2681 | |
c0a96aed | 2682 | eeprom = ftdi->eeprom; |
a35aa9bd | 2683 | eeprom_size = eeprom->size; |
b56d5a64 | 2684 | |
b56d5a64 MK |
2685 | // Addr 02: Vendor ID |
2686 | eeprom->vendor_id = buf[0x02] + (buf[0x03] << 8); | |
2687 | ||
2688 | // Addr 04: Product ID | |
2689 | eeprom->product_id = buf[0x04] + (buf[0x05] << 8); | |
22d12cda | 2690 | |
38801bf8 | 2691 | release = buf[0x06] + (buf[0x07]<<8); |
b56d5a64 MK |
2692 | |
2693 | // Addr 08: Config descriptor | |
2694 | // Bit 7: always 1 | |
2695 | // Bit 6: 1 if this device is self powered, 0 if bus powered | |
2696 | // Bit 5: 1 if this device uses remote wakeup | |
2697 | // Bit 4: 1 if this device is battery powered | |
f6ef2983 UB |
2698 | eeprom->self_powered = buf[0x08] & 0x40; |
2699 | eeprom->remote_wakeup = buf[0x08] & 0x20;; | |
b56d5a64 MK |
2700 | |
2701 | // Addr 09: Max power consumption: max power = value * 2 mA | |
2702 | eeprom->max_power = buf[0x09]; | |
2703 | ||
2704 | // Addr 0A: Chip configuration | |
2705 | // Bit 7: 0 - reserved | |
2706 | // Bit 6: 0 - reserved | |
2707 | // Bit 5: 0 - reserved | |
2708 | // Bit 4: 1 - Change USB version | |
49a6bc10 | 2709 | // Not seen on FT2232(D) |
b56d5a64 MK |
2710 | // Bit 3: 1 - Use the serial number string |
2711 | // Bit 2: 1 - Enable suspend pull downs for lower power | |
2712 | // Bit 1: 1 - Out EndPoint is Isochronous | |
2713 | // Bit 0: 1 - In EndPoint is Isochronous | |
2714 | // | |
8d3fe5c9 UB |
2715 | eeprom->in_is_isochronous = buf[0x0A]&0x01; |
2716 | eeprom->out_is_isochronous = buf[0x0A]&0x02; | |
2717 | eeprom->suspend_pull_downs = buf[0x0A]&0x04; | |
a02587d5 | 2718 | eeprom->use_serial = buf[0x0A] & USE_SERIAL_NUM; |
75388926 | 2719 | if(buf[0x0A]&0x10) |
b1859923 UB |
2720 | fprintf(stderr, |
2721 | "EEPROM byte[0x0a] Bit 4 unexpected set. If this happened with the EEPROM\n" | |
2722 | "programmed by FTDI tools, please report to libftdi@developer.intra2net.com\n"); | |
b56d5a64 | 2723 | |
b56d5a64 | 2724 | |
b1859923 UB |
2725 | // Addr 0C: USB version low byte when 0x0A |
2726 | // Addr 0D: USB version high byte when 0x0A | |
2727 | eeprom->usb_version = buf[0x0C] + (buf[0x0D] << 8); | |
b56d5a64 MK |
2728 | |
2729 | // Addr 0E: Offset of the manufacturer string + 0x80, calculated later | |
2730 | // Addr 0F: Length of manufacturer string | |
2731 | manufacturer_size = buf[0x0F]/2; | |
74e8e79d UB |
2732 | if(eeprom->manufacturer) |
2733 | free(eeprom->manufacturer); | |
acc1fa05 UB |
2734 | if (manufacturer_size > 0) |
2735 | { | |
2736 | eeprom->manufacturer = malloc(manufacturer_size); | |
2737 | if (eeprom->manufacturer) | |
2738 | { | |
2739 | // Decode manufacturer | |
84ec032f | 2740 | i = buf[0x0E] & (eeprom_size -1); // offset |
acc1fa05 UB |
2741 | for (j=0;j<manufacturer_size-1;j++) |
2742 | { | |
2743 | eeprom->manufacturer[j] = buf[2*j+i+2]; | |
2744 | } | |
2745 | eeprom->manufacturer[j] = '\0'; | |
2746 | } | |
2747 | } | |
b56d5a64 MK |
2748 | else eeprom->manufacturer = NULL; |
2749 | ||
2750 | // Addr 10: Offset of the product string + 0x80, calculated later | |
2751 | // Addr 11: Length of product string | |
74e8e79d UB |
2752 | if(eeprom->product) |
2753 | free(eeprom->product); | |
b56d5a64 | 2754 | product_size = buf[0x11]/2; |
acc1fa05 UB |
2755 | if (product_size > 0) |
2756 | { | |
2757 | eeprom->product = malloc(product_size); | |
2758 | if(eeprom->product) | |
2759 | { | |
2760 | // Decode product name | |
84ec032f | 2761 | i = buf[0x10] & (eeprom_size -1); // offset |
acc1fa05 UB |
2762 | for (j=0;j<product_size-1;j++) |
2763 | { | |
2764 | eeprom->product[j] = buf[2*j+i+2]; | |
2765 | } | |
2766 | eeprom->product[j] = '\0'; | |
2767 | } | |
2768 | } | |
b56d5a64 MK |
2769 | else eeprom->product = NULL; |
2770 | ||
2771 | // Addr 12: Offset of the serial string + 0x80, calculated later | |
2772 | // Addr 13: Length of serial string | |
74e8e79d UB |
2773 | if(eeprom->serial) |
2774 | free(eeprom->serial); | |
b56d5a64 | 2775 | serial_size = buf[0x13]/2; |
acc1fa05 UB |
2776 | if (serial_size > 0) |
2777 | { | |
2778 | eeprom->serial = malloc(serial_size); | |
2779 | if(eeprom->serial) | |
2780 | { | |
2781 | // Decode serial | |
84ec032f | 2782 | i = buf[0x12] & (eeprom_size -1); // offset |
acc1fa05 UB |
2783 | for (j=0;j<serial_size-1;j++) |
2784 | { | |
2785 | eeprom->serial[j] = buf[2*j+i+2]; | |
2786 | } | |
2787 | eeprom->serial[j] = '\0'; | |
2788 | } | |
2789 | } | |
b56d5a64 MK |
2790 | else eeprom->serial = NULL; |
2791 | ||
b56d5a64 MK |
2792 | // verify checksum |
2793 | checksum = 0xAAAA; | |
2794 | ||
22d12cda TJ |
2795 | for (i = 0; i < eeprom_size/2-1; i++) |
2796 | { | |
b56d5a64 MK |
2797 | value = buf[i*2]; |
2798 | value += buf[(i*2)+1] << 8; | |
2799 | ||
2800 | checksum = value^checksum; | |
2801 | checksum = (checksum << 1) | (checksum >> 15); | |
2802 | } | |
2803 | ||
2804 | eeprom_checksum = buf[eeprom_size-2] + (buf[eeprom_size-1] << 8); | |
2805 | ||
22d12cda TJ |
2806 | if (eeprom_checksum != checksum) |
2807 | { | |
2808 | fprintf(stderr, "Checksum Error: %04x %04x\n", checksum, eeprom_checksum); | |
cc9c9d58 | 2809 | ftdi_error_return(-1,"EEPROM checksum error"); |
4af1d1bb MK |
2810 | } |
2811 | ||
eb498cff | 2812 | eeprom->channel_a_type = 0; |
aa099f46 | 2813 | if ((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM)) |
f6ef2983 | 2814 | { |
6cd4f922 | 2815 | eeprom->chip = -1; |
f6ef2983 | 2816 | } |
947d9552 | 2817 | else if(ftdi->type == TYPE_2232C) |
f6ef2983 | 2818 | { |
2cde7c52 UB |
2819 | eeprom->channel_a_type = buf[0x00] & 0x7; |
2820 | eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP; | |
2821 | eeprom->high_current_a = buf[0x00] & HIGH_CURRENT_DRIVE; | |
2822 | eeprom->channel_b_type = buf[0x01] & 0x7; | |
2823 | eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP; | |
2824 | eeprom->high_current_b = buf[0x01] & HIGH_CURRENT_DRIVE; | |
6cd4f922 | 2825 | eeprom->chip = buf[0x14]; |
065edc58 | 2826 | } |
947d9552 | 2827 | else if(ftdi->type == TYPE_R) |
564b2716 | 2828 | { |
2cde7c52 UB |
2829 | /* TYPE_R flags D2XX, not VCP as all others*/ |
2830 | eeprom->channel_a_driver = (~buf[0x00]) & DRIVER_VCP; | |
2831 | eeprom->high_current = buf[0x00] & HIGH_CURRENT_DRIVE_R; | |
2832 | if( (buf[0x01]&0x40) != 0x40) | |
2833 | fprintf(stderr, | |
2834 | "TYPE_R EEPROM byte[0x01] Bit 6 unexpected Endpoint size." | |
2835 | " If this happened with the\n" | |
2836 | " EEPROM programmed by FTDI tools, please report " | |
2837 | "to libftdi@developer.intra2net.com\n"); | |
2838 | ||
6cd4f922 | 2839 | eeprom->chip = buf[0x16]; |
cecb9cb2 UB |
2840 | // Addr 0B: Invert data lines |
2841 | // Works only on FT232R, not FT245R, but no way to distinguish | |
07851949 UB |
2842 | eeprom->invert = buf[0x0B]; |
2843 | // Addr 14: CBUS function: CBUS0, CBUS1 | |
2844 | // Addr 15: CBUS function: CBUS2, CBUS3 | |
2845 | // Addr 16: CBUS function: CBUS5 | |
2846 | eeprom->cbus_function[0] = buf[0x14] & 0x0f; | |
2847 | eeprom->cbus_function[1] = (buf[0x14] >> 4) & 0x0f; | |
2848 | eeprom->cbus_function[2] = buf[0x15] & 0x0f; | |
2849 | eeprom->cbus_function[3] = (buf[0x15] >> 4) & 0x0f; | |
2850 | eeprom->cbus_function[4] = buf[0x16] & 0x0f; | |
564b2716 | 2851 | } |
db099ec5 UB |
2852 | else if ((ftdi->type == TYPE_2232H) ||(ftdi->type == TYPE_4232H)) |
2853 | { | |
c6b94478 | 2854 | eeprom->channel_a_type = buf[0x00] & 0x7; |
2cde7c52 UB |
2855 | eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP; |
2856 | eeprom->channel_b_type = buf[0x01] & 0x7; | |
2857 | eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP; | |
2858 | ||
2859 | if(ftdi->type == TYPE_2232H) | |
2860 | eeprom->suspend_dbus7 = buf[0x01] & SUSPEND_DBUS7; | |
2861 | ||
6cd4f922 | 2862 | eeprom->chip = buf[0x18]; |
db099ec5 UB |
2863 | eeprom->group0_drive = buf[0x0c] & DRIVE_16MA; |
2864 | eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT; | |
2865 | eeprom->group0_slew = buf[0x0c] & SLOW_SLEW; | |
2866 | eeprom->group1_drive = (buf[0x0c] >> 4) & 0x3; | |
2867 | eeprom->group1_schmitt = (buf[0x0c] >> 4) & IS_SCHMITT; | |
2868 | eeprom->group1_slew = (buf[0x0c] >> 4) & SLOW_SLEW; | |
2869 | eeprom->group2_drive = buf[0x0d] & DRIVE_16MA; | |
2870 | eeprom->group2_schmitt = buf[0x0d] & IS_SCHMITT; | |
2871 | eeprom->group2_slew = buf[0x0d] & SLOW_SLEW; | |
2872 | eeprom->group3_drive = (buf[0x0d] >> 4) & DRIVE_16MA; | |
2873 | eeprom->group3_schmitt = (buf[0x0d] >> 4) & IS_SCHMITT; | |
2874 | eeprom->group3_slew = (buf[0x0d] >> 4) & SLOW_SLEW; | |
947d9552 UB |
2875 | } |
2876 | ||
f6ef2983 UB |
2877 | if(verbose) |
2878 | { | |
e107f509 | 2879 | char *channel_mode[] = {"UART","245","CPU", "unknown", "OPTO"}; |
f6ef2983 UB |
2880 | fprintf(stdout, "VID: 0x%04x\n",eeprom->vendor_id); |
2881 | fprintf(stdout, "PID: 0x%04x\n",eeprom->product_id); | |
38801bf8 | 2882 | fprintf(stdout, "Release: 0x%04x\n",release); |
f6ef2983 UB |
2883 | |
2884 | if(eeprom->self_powered) | |
2885 | fprintf(stdout, "Self-Powered%s", (eeprom->remote_wakeup)?", USB Remote Wake Up\n":"\n"); | |
2886 | else | |
1cd815ad | 2887 | fprintf(stdout, "Bus Powered: %3d mA%s", eeprom->max_power * 2, |
f6ef2983 UB |
2888 | (eeprom->remote_wakeup)?" USB Remote Wake Up\n":"\n"); |
2889 | if(eeprom->manufacturer) | |
2890 | fprintf(stdout, "Manufacturer: %s\n",eeprom->manufacturer); | |
2891 | if(eeprom->product) | |
2892 | fprintf(stdout, "Product: %s\n",eeprom->product); | |
2893 | if(eeprom->serial) | |
2894 | fprintf(stdout, "Serial: %s\n",eeprom->serial); | |
e107f509 | 2895 | fprintf(stdout, "Checksum : %04x\n", checksum); |
6cd4f922 UB |
2896 | if (ftdi->type == TYPE_R) |
2897 | fprintf(stdout, "Internal EEPROM\n"); | |
2898 | else if (eeprom->chip >= 0x46) | |
2899 | fprintf(stdout, "Attached EEPROM: 93x%02x\n", eeprom->chip); | |
fb9bfdd1 UB |
2900 | if(eeprom->suspend_dbus7) |
2901 | fprintf(stdout, "Suspend on DBUS7\n"); | |
2902 | if(eeprom->suspend_pull_downs) | |
2903 | fprintf(stdout, "Pull IO pins low during suspend\n"); | |
2904 | if(eeprom->remote_wakeup) | |
2905 | fprintf(stdout, "Enable Remote Wake Up\n"); | |
802a949e | 2906 | fprintf(stdout, "PNP: %d\n",(eeprom->is_not_pnp)?0:1); |
db099ec5 | 2907 | if (ftdi->type >= TYPE_2232C) |
e107f509 UB |
2908 | fprintf(stdout,"Channel A has Mode %s%s%s\n", |
2909 | channel_mode[eeprom->channel_a_type], | |
2cde7c52 UB |
2910 | (eeprom->channel_a_driver)?" VCP":"", |
2911 | (eeprom->high_current_a)?" High Current IO":""); | |
2912 | if ((ftdi->type >= TYPE_2232C) && (ftdi->type != TYPE_R)) | |
e107f509 UB |
2913 | fprintf(stdout,"Channel B has Mode %s%s%s\n", |
2914 | channel_mode[eeprom->channel_b_type], | |
2cde7c52 UB |
2915 | (eeprom->channel_b_driver)?" VCP":"", |
2916 | (eeprom->high_current_b)?" High Current IO":""); | |
db099ec5 UB |
2917 | if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H)) |
2918 | { | |
2919 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
2920 | (ftdi->type == TYPE_2232H)?"AL":"A", | |
2921 | (eeprom->group0_drive+1) *4, | |
2922 | (eeprom->group0_schmitt)?" Schmitt Input":"", | |
2923 | (eeprom->group0_slew)?" Slow Slew":""); | |
2924 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
2925 | (ftdi->type == TYPE_2232H)?"AH":"B", | |
2926 | (eeprom->group1_drive+1) *4, | |
2927 | (eeprom->group1_schmitt)?" Schmitt Input":"", | |
2928 | (eeprom->group1_slew)?" Slow Slew":""); | |
2929 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
2930 | (ftdi->type == TYPE_2232H)?"BL":"C", | |
2931 | (eeprom->group2_drive+1) *4, | |
2932 | (eeprom->group2_schmitt)?" Schmitt Input":"", | |
2933 | (eeprom->group2_slew)?" Slow Slew":""); | |
2934 | fprintf(stdout,"%s has %d mA drive%s%s\n", | |
2935 | (ftdi->type == TYPE_2232H)?"BH":"D", | |
2936 | (eeprom->group3_drive+1) *4, | |
2937 | (eeprom->group3_schmitt)?" Schmitt Input":"", | |
2938 | (eeprom->group3_slew)?" Slow Slew":""); | |
2939 | } | |
a4980043 UB |
2940 | if (ftdi->type == TYPE_R) |
2941 | { | |
2942 | char *cbus_mux[] = {"TXDEN","PWREN","RXLED", "TXLED","TX+RXLED", | |
13f00d3c | 2943 | "SLEEP","CLK48","CLK24","CLK12","CLK6", |
a4980043 | 2944 | "IOMODE","BB_WR","BB_RD"}; |
13f00d3c | 2945 | char *cbus_BB[] = {"RXF","TXE","RD", "WR"}; |
a4980043 UB |
2946 | int i; |
2947 | ||
2948 | if(eeprom->invert) | |
2949 | { | |
2950 | char *r_bits[] = {"TXD","RXD","RTS", "CTS","DTR","DSR","DCD","RI"}; | |
2951 | fprintf(stdout,"Inverted bits:"); | |
2952 | for (i=0; i<8; i++) | |
2953 | if((eeprom->invert & (1<<i)) == (1<<i)) | |
2954 | fprintf(stdout," %s",r_bits[i]); | |
2955 | fprintf(stdout,"\n"); | |
2956 | } | |
2957 | for(i=0; i<5; i++) | |
2958 | { | |
2959 | if(eeprom->cbus_function[i]<CBUS_BB) | |
2960 | fprintf(stdout,"C%d Function: %s\n", i, | |
2961 | cbus_mux[eeprom->cbus_function[i]]); | |
2962 | else | |
2963 | fprintf(stdout,"C%d BB Function: %s\n", i, | |
2964 | cbus_BB[i]); | |
2965 | } | |
2966 | } | |
f6ef2983 | 2967 | } |
4af1d1bb | 2968 | return 0; |
b56d5a64 MK |
2969 | } |
2970 | ||
1941414d | 2971 | /** |
c1c70e13 OS |
2972 | Read eeprom location |
2973 | ||
2974 | \param ftdi pointer to ftdi_context | |
2975 | \param eeprom_addr Address of eeprom location to be read | |
2976 | \param eeprom_val Pointer to store read eeprom location | |
2977 | ||
2978 | \retval 0: all fine | |
2979 | \retval -1: read failed | |
22a1b5c1 | 2980 | \retval -2: USB device unavailable |
c1c70e13 OS |
2981 | */ |
2982 | int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short *eeprom_val) | |
2983 | { | |
22a1b5c1 TJ |
2984 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
2985 | ftdi_error_return(-2, "USB device unavailable"); | |
2986 | ||
97c6b5f6 | 2987 | 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 |
2988 | ftdi_error_return(-1, "reading eeprom failed"); |
2989 | ||
2990 | return 0; | |
2991 | } | |
2992 | ||
2993 | /** | |
1941414d TJ |
2994 | Read eeprom |
2995 | ||
2996 | \param ftdi pointer to ftdi_context | |
b8aa7b35 | 2997 | |
1941414d TJ |
2998 | \retval 0: all fine |
2999 | \retval -1: read failed | |
22a1b5c1 | 3000 | \retval -2: USB device unavailable |
1941414d | 3001 | */ |
a35aa9bd | 3002 | int ftdi_read_eeprom(struct ftdi_context *ftdi) |
a8f46ddc | 3003 | { |
a3da1d95 | 3004 | int i; |
a35aa9bd | 3005 | unsigned char *buf; |
a3da1d95 | 3006 | |
22a1b5c1 TJ |
3007 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3008 | ftdi_error_return(-2, "USB device unavailable"); | |
a35aa9bd | 3009 | buf = ftdi->eeprom->buf; |
22a1b5c1 | 3010 | |
2d543486 | 3011 | for (i = 0; i < FTDI_MAX_EEPROM_SIZE/2; i++) |
22d12cda | 3012 | { |
a35aa9bd UB |
3013 | if (libusb_control_transfer( |
3014 | ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE,SIO_READ_EEPROM_REQUEST, 0, i, | |
3015 | buf+(i*2), 2, ftdi->usb_read_timeout) != 2) | |
c3d95b87 | 3016 | ftdi_error_return(-1, "reading eeprom failed"); |
a3da1d95 GE |
3017 | } |
3018 | ||
2d543486 | 3019 | if (ftdi->type == TYPE_R) |
a35aa9bd | 3020 | ftdi->eeprom->size = 0x80; |
2d543486 UB |
3021 | /* Guesses size of eeprom by comparing halves |
3022 | - will not work with blank eeprom */ | |
a35aa9bd | 3023 | else if (strrchr((const char *)buf, 0xff) == ((const char *)buf +FTDI_MAX_EEPROM_SIZE -1)) |
2d543486 | 3024 | ftdi->eeprom->size = -1; |
a35aa9bd | 3025 | else if(memcmp(buf,&buf[0x80],0x80) == 0) |
2d543486 | 3026 | ftdi->eeprom->size = 0x80; |
a35aa9bd | 3027 | else if(memcmp(buf,&buf[0x40],0x40) == 0) |
2d543486 UB |
3028 | ftdi->eeprom->size = 0x40; |
3029 | else | |
3030 | ftdi->eeprom->size = 0x100; | |
a3da1d95 GE |
3031 | return 0; |
3032 | } | |
3033 | ||
cb6250fa TJ |
3034 | /* |
3035 | ftdi_read_chipid_shift does the bitshift operation needed for the FTDIChip-ID | |
3036 | Function is only used internally | |
3037 | \internal | |
3038 | */ | |
3039 | static unsigned char ftdi_read_chipid_shift(unsigned char value) | |
3040 | { | |
3041 | return ((value & 1) << 1) | | |
22d12cda TJ |
3042 | ((value & 2) << 5) | |
3043 | ((value & 4) >> 2) | | |
3044 | ((value & 8) << 4) | | |
3045 | ((value & 16) >> 1) | | |
3046 | ((value & 32) >> 1) | | |
3047 | ((value & 64) >> 4) | | |
3048 | ((value & 128) >> 2); | |
cb6250fa TJ |
3049 | } |
3050 | ||
3051 | /** | |
3052 | Read the FTDIChip-ID from R-type devices | |
3053 | ||
3054 | \param ftdi pointer to ftdi_context | |
3055 | \param chipid Pointer to store FTDIChip-ID | |
3056 | ||
3057 | \retval 0: all fine | |
3058 | \retval -1: read failed | |
22a1b5c1 | 3059 | \retval -2: USB device unavailable |
cb6250fa TJ |
3060 | */ |
3061 | int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid) | |
3062 | { | |
c7eb3112 | 3063 | unsigned int a = 0, b = 0; |
cb6250fa | 3064 | |
22a1b5c1 TJ |
3065 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3066 | ftdi_error_return(-2, "USB device unavailable"); | |
3067 | ||
579b006f | 3068 | 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 |
3069 | { |
3070 | a = a << 8 | a >> 8; | |
579b006f | 3071 | 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 |
3072 | { |
3073 | b = b << 8 | b >> 8; | |
5230676f | 3074 | a = (a << 16) | (b & 0xFFFF); |
912d50ca TJ |
3075 | a = ftdi_read_chipid_shift(a) | ftdi_read_chipid_shift(a>>8)<<8 |
3076 | | ftdi_read_chipid_shift(a>>16)<<16 | ftdi_read_chipid_shift(a>>24)<<24; | |
cb6250fa | 3077 | *chipid = a ^ 0xa5f0f7d1; |
c7eb3112 | 3078 | return 0; |
cb6250fa TJ |
3079 | } |
3080 | } | |
3081 | ||
c7eb3112 | 3082 | ftdi_error_return(-1, "read of FTDIChip-ID failed"); |
cb6250fa TJ |
3083 | } |
3084 | ||
1941414d | 3085 | /** |
c1c70e13 OS |
3086 | Write eeprom location |
3087 | ||
3088 | \param ftdi pointer to ftdi_context | |
3089 | \param eeprom_addr Address of eeprom location to be written | |
3090 | \param eeprom_val Value to be written | |
3091 | ||
3092 | \retval 0: all fine | |
a661e3e4 | 3093 | \retval -1: write failed |
22a1b5c1 | 3094 | \retval -2: USB device unavailable |
a661e3e4 UB |
3095 | \retval -3: Invalid access to checksum protected area below 0x80 |
3096 | \retval -4: Device can't access unprotected area | |
3097 | \retval -5: Reading chip type failed | |
c1c70e13 | 3098 | */ |
a661e3e4 UB |
3099 | int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr, |
3100 | unsigned short eeprom_val) | |
c1c70e13 | 3101 | { |
a661e3e4 UB |
3102 | int chip_type_location; |
3103 | unsigned short chip_type; | |
3104 | ||
22a1b5c1 TJ |
3105 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3106 | ftdi_error_return(-2, "USB device unavailable"); | |
3107 | ||
a661e3e4 UB |
3108 | if(eeprom_addr <0x80) |
3109 | ftdi_error_return(-2, "Invalid access to checksum protected area below 0x80"); | |
3110 | ||
3111 | ||
3112 | switch (ftdi->type) | |
3113 | { | |
3114 | case TYPE_BM: | |
3115 | case TYPE_2232C: | |
3116 | chip_type_location = 0x14; | |
3117 | break; | |
3118 | case TYPE_2232H: | |
3119 | case TYPE_4232H: | |
3120 | chip_type_location = 0x18; | |
3121 | break; | |
3122 | default: | |
3123 | ftdi_error_return(-4, "Device can't access unprotected area"); | |
3124 | } | |
3125 | ||
3126 | if (ftdi_read_eeprom_location( ftdi, chip_type_location>>1, &chip_type)) | |
3127 | ftdi_error_return(-5, "Reading failed failed"); | |
3128 | fprintf(stderr," loc 0x%04x val 0x%04x\n", chip_type_location,chip_type); | |
3129 | if((chip_type & 0xff) != 0x66) | |
3130 | { | |
3131 | ftdi_error_return(-6, "EEPROM is not of 93x66"); | |
3132 | } | |
3133 | ||
579b006f | 3134 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
c1c70e13 OS |
3135 | SIO_WRITE_EEPROM_REQUEST, eeprom_val, eeprom_addr, |
3136 | NULL, 0, ftdi->usb_write_timeout) != 0) | |
3137 | ftdi_error_return(-1, "unable to write eeprom"); | |
3138 | ||
3139 | return 0; | |
3140 | } | |
3141 | ||
3142 | /** | |
1941414d | 3143 | Write eeprom |
a3da1d95 | 3144 | |
1941414d | 3145 | \param ftdi pointer to ftdi_context |
a35aa9bd | 3146 | |
1941414d TJ |
3147 | \retval 0: all fine |
3148 | \retval -1: read failed | |
22a1b5c1 | 3149 | \retval -2: USB device unavailable |
1941414d | 3150 | */ |
a35aa9bd | 3151 | int ftdi_write_eeprom(struct ftdi_context *ftdi) |
a8f46ddc | 3152 | { |
ba5329be | 3153 | unsigned short usb_val, status; |
e30da501 | 3154 | int i, ret; |
a35aa9bd | 3155 | unsigned char *eeprom; |
a3da1d95 | 3156 | |
22a1b5c1 TJ |
3157 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3158 | ftdi_error_return(-2, "USB device unavailable"); | |
a35aa9bd | 3159 | eeprom = ftdi->eeprom->buf; |
22a1b5c1 | 3160 | |
ba5329be | 3161 | /* These commands were traced while running MProg */ |
e30da501 TJ |
3162 | if ((ret = ftdi_usb_reset(ftdi)) != 0) |
3163 | return ret; | |
3164 | if ((ret = ftdi_poll_modem_status(ftdi, &status)) != 0) | |
3165 | return ret; | |
3166 | if ((ret = ftdi_set_latency_timer(ftdi, 0x77)) != 0) | |
3167 | return ret; | |
ba5329be | 3168 | |
c0a96aed | 3169 | for (i = 0; i < ftdi->eeprom->size/2; i++) |
22d12cda | 3170 | { |
d9f0cce7 TJ |
3171 | usb_val = eeprom[i*2]; |
3172 | usb_val += eeprom[(i*2)+1] << 8; | |
579b006f JZ |
3173 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
3174 | SIO_WRITE_EEPROM_REQUEST, usb_val, i, | |
3175 | NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 | 3176 | ftdi_error_return(-1, "unable to write eeprom"); |
a3da1d95 GE |
3177 | } |
3178 | ||
3179 | return 0; | |
3180 | } | |
3181 | ||
1941414d TJ |
3182 | /** |
3183 | Erase eeprom | |
a3da1d95 | 3184 | |
a5e1bd8c MK |
3185 | This is not supported on FT232R/FT245R according to the MProg manual from FTDI. |
3186 | ||
1941414d TJ |
3187 | \param ftdi pointer to ftdi_context |
3188 | ||
3189 | \retval 0: all fine | |
3190 | \retval -1: erase failed | |
22a1b5c1 | 3191 | \retval -2: USB device unavailable |
99404ad5 UB |
3192 | \retval -3: Writing magic failed |
3193 | \retval -4: Read EEPROM failed | |
3194 | \retval -5: Unexpected EEPROM value | |
1941414d | 3195 | */ |
99404ad5 | 3196 | #define MAGIC 0x55aa |
a8f46ddc TJ |
3197 | int ftdi_erase_eeprom(struct ftdi_context *ftdi) |
3198 | { | |
99404ad5 | 3199 | unsigned short eeprom_value; |
22a1b5c1 TJ |
3200 | if (ftdi == NULL || ftdi->usb_dev == NULL) |
3201 | ftdi_error_return(-2, "USB device unavailable"); | |
3202 | ||
99404ad5 UB |
3203 | if(ftdi->type == TYPE_R) |
3204 | { | |
3205 | ftdi->eeprom->chip = 0; | |
3206 | return 0; | |
3207 | } | |
3208 | ||
3209 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, | |
3210 | 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0) | |
c3d95b87 | 3211 | ftdi_error_return(-1, "unable to erase eeprom"); |
a3da1d95 | 3212 | |
99404ad5 UB |
3213 | |
3214 | /* detect chip type by writing 0x55AA as magic at word position 0xc0 | |
3215 | Chip is 93x46 if magic is read at word position 0x00, as wraparound happens around 0x40 | |
3216 | Chip is 93x56 if magic is read at word position 0x40, as wraparound happens around 0x80 | |
3217 | Chip is 93x66 if magic is only read at word position 0xc0*/ | |
10186c1f UB |
3218 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, |
3219 | SIO_WRITE_EEPROM_REQUEST, MAGIC, 0xc0, | |
3220 | NULL, 0, ftdi->usb_write_timeout) != 0) | |
99404ad5 UB |
3221 | ftdi_error_return(-3, "Writing magic failed"); |
3222 | if (ftdi_read_eeprom_location( ftdi, 0x00, &eeprom_value)) | |
3223 | ftdi_error_return(-4, "Reading failed failed"); | |
3224 | if(eeprom_value == MAGIC) | |
3225 | { | |
3226 | ftdi->eeprom->chip = 0x46; | |
3227 | } | |
3228 | else | |
3229 | { | |
3230 | if (ftdi_read_eeprom_location( ftdi, 0x40, &eeprom_value)) | |
3231 | ftdi_error_return(-4, "Reading failed failed"); | |
3232 | if(eeprom_value == MAGIC) | |
3233 | ftdi->eeprom->chip = 0x56; | |
3234 | else | |
3235 | { | |
3236 | if (ftdi_read_eeprom_location( ftdi, 0xc0, &eeprom_value)) | |
3237 | ftdi_error_return(-4, "Reading failed failed"); | |
3238 | if(eeprom_value == MAGIC) | |
3239 | ftdi->eeprom->chip = 0x66; | |
3240 | else | |
3241 | { | |
3242 | ftdi->eeprom->chip = -1; | |
3243 | } | |
3244 | } | |
3245 | } | |
3246 | if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_ERASE_EEPROM_REQUEST, | |
3247 | 0, 0, NULL, 0, ftdi->usb_write_timeout) < 0) | |
3248 | ftdi_error_return(-1, "unable to erase eeprom"); | |
a3da1d95 GE |
3249 | return 0; |
3250 | } | |
c3d95b87 | 3251 | |
1941414d TJ |
3252 | /** |
3253 | Get string representation for last error code | |
c3d95b87 | 3254 | |
1941414d TJ |
3255 | \param ftdi pointer to ftdi_context |
3256 | ||
3257 | \retval Pointer to error string | |
3258 | */ | |
c3d95b87 TJ |
3259 | char *ftdi_get_error_string (struct ftdi_context *ftdi) |
3260 | { | |
22a1b5c1 TJ |
3261 | if (ftdi == NULL) |
3262 | return ""; | |
3263 | ||
c3d95b87 TJ |
3264 | return ftdi->error_str; |
3265 | } | |
a01d31e2 | 3266 | |
b5ec1820 | 3267 | /* @} end of doxygen libftdi group */ |