libftdi: (tomj) ability to set RS232 break type
[libftdi] / src / ftdi.h
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1/***************************************************************************
2 ftdi.h - description
3 -------------------
4 begin : Fri Apr 4 2003
5 copyright : (C) 2003 by Intra2net AG
5fdb1cb1 6 email : opensource@intra2net.com
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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 ***************************************************************************/
16
17#ifndef __libftdi_h__
18#define __libftdi_h__
19
98452d97 20#include <usb.h>
0e302db6 21
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22#define FTDI_DEFAULT_EEPROM_SIZE 128
23
9bec2387 24/// FTDI chip type
cb6250fa 25enum ftdi_chip_type { TYPE_AM=0, TYPE_BM=1, TYPE_2232C=2, TYPE_R=3 };
9bec2387 26/// Parity mode for ftdi_set_line_property()
2f73e59f 27enum ftdi_parity_type { NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4 };
9bec2387 28/// Number of stop bits for ftdi_set_line_property()
2f73e59f 29enum ftdi_stopbits_type { STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2 };
6c32e222 30/// Number of bits for ftdi_set_line_property()
2f73e59f 31enum ftdi_bits_type { BITS_7=7, BITS_8=8 };
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32/// Break type for ftdi_set_line_property2()
33enum ftdi_break_type { BREAK_OFF=0, BREAK_ON=1 };
2f73e59f 34
9bec2387 35/// MPSSE bitbang modes
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36enum ftdi_mpsse_mode {
37 BITMODE_RESET = 0x00,
38 BITMODE_BITBANG= 0x01,
39 BITMODE_MPSSE = 0x02,
40 BITMODE_SYNCBB = 0x04,
41 BITMODE_MCU = 0x08,
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42 // CPU-style fifo mode gets set via EEPROM
43 BITMODE_OPTO = 0x10,
44 BITMODE_CBUS = 0x20
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45};
46
9bec2387 47/// Port interface for FT2232C
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48enum ftdi_interface {
49 INTERFACE_ANY = 0,
50 INTERFACE_A = 1,
51 INTERFACE_B = 2
52};
53
54/* Shifting commands IN MPSSE Mode*/
55#define MPSSE_WRITE_NEG 0x01 /* Write TDI/DO on negative TCK/SK edge*/
56#define MPSSE_BITMODE 0x02 /* Write bits, not bytes */
57#define MPSSE_READ_NEG 0x04 /* Sample TDO/DI on negative TCK/SK edge */
58#define MPSSE_LSB 0x08 /* LSB first */
59#define MPSSE_DO_WRITE 0x10 /* Write TDI/DO */
60#define MPSSE_DO_READ 0x20 /* Read TDO/DI */
61#define MPSSE_WRITE_TMS 0x40 /* Write TMS/CS */
62
63/* FTDI MPSSE commands */
64#define SET_BITS_LOW 0x80
65/*BYTE DATA*/
66/*BYTE Direction*/
67#define SET_BITS_HIGH 0x82
68/*BYTE DATA*/
69/*BYTE Direction*/
70#define GET_BITS_LOW 0x81
71#define GET_BITS_HIGH 0x83
72#define LOOPBACK_START 0x84
73#define LOOPBACK_END 0x85
74#define TCK_DIVISOR 0x86
75/* Value Low */
76/* Value HIGH */ /*rate is 12000000/((1+value)*2) */
77#define DIV_VALUE(rate) (rate > 6000000)?0:((6000000/rate -1) > 0xffff)? 0xffff: (6000000/rate -1)
78
79/* Commands in MPSSE and Host Emulation Mode */
80#define SEND_IMMEDIATE 0x87
81#define WAIT_ON_HIGH 0x88
82#define WAIT_ON_LOW 0x89
83
84/* Commands in Host Emulation Mode */
85#define READ_SHORT 0x90
86/* Address_Low */
87#define READ_EXTENDED 0x91
88/* Address High */
89/* Address Low */
90#define WRITE_SHORT 0x92
91/* Address_Low */
92#define WRITE_EXTENDED 0x93
93/* Address High */
94/* Address Low */
53ad271d 95
a01d31e2 96/* Definitions for flow control */
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97#define SIO_MODEM_CTRL 1 /* Set the modem control register */
98#define SIO_SET_FLOW_CTRL 2 /* Set flow control register */
99
100#define SIO_SET_FLOW_CTRL_REQUEST_TYPE 0x40
101#define SIO_SET_FLOW_CTRL_REQUEST SIO_SET_FLOW_CTRL
102
103#define SIO_DISABLE_FLOW_CTRL 0x0
104#define SIO_RTS_CTS_HS (0x1 << 8)
105#define SIO_DTR_DSR_HS (0x2 << 8)
106#define SIO_XON_XOFF_HS (0x4 << 8)
107
108#define SIO_SET_MODEM_CTRL_REQUEST_TYPE 0x40
109#define SIO_SET_MODEM_CTRL_REQUEST SIO_MODEM_CTRL
110
111#define SIO_SET_DTR_MASK 0x1
112#define SIO_SET_DTR_HIGH ( 1 | ( SIO_SET_DTR_MASK << 8))
113#define SIO_SET_DTR_LOW ( 0 | ( SIO_SET_DTR_MASK << 8))
114#define SIO_SET_RTS_MASK 0x2
115#define SIO_SET_RTS_HIGH ( 2 | ( SIO_SET_RTS_MASK << 8 ))
116#define SIO_SET_RTS_LOW ( 0 | ( SIO_SET_RTS_MASK << 8 ))
117
118#define SIO_RTS_CTS_HS (0x1 << 8)
119
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120/* marker for unused usb urb structures
121 (taken from libusb) */
122#define FTDI_URB_USERCONTEXT_COOKIE ((void *)0x1)
123
9bec2387 124/**
b5ec1820 125 \brief Main context structure for all libftdi functions.
a01d31e2 126
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127 Do not access directly if possible.
128*/
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129struct ftdi_context {
130 // USB specific
9bec2387 131 /// libusb's usb_dev_handle
98452d97 132 struct usb_dev_handle *usb_dev;
9bec2387 133 /// usb read timeout
545820ce 134 int usb_read_timeout;
9bec2387 135 /// usb write timeout
545820ce 136 int usb_write_timeout;
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137
138 // FTDI specific
9bec2387 139 /// FTDI chip type
53ad271d 140 enum ftdi_chip_type type;
9bec2387 141 /// baudrate
a3da1d95 142 int baudrate;
9bec2387 143 /// bitbang mode state
a3da1d95 144 unsigned char bitbang_enabled;
9bec2387 145 /// pointer to read buffer for ftdi_read_data
948f9ada 146 unsigned char *readbuffer;
9bec2387 147 /// read buffer offset
4ece2c24 148 unsigned int readbuffer_offset;
9bec2387 149 /// number of remaining data in internal read buffer
4ece2c24 150 unsigned int readbuffer_remaining;
9bec2387 151 /// read buffer chunk size
948f9ada 152 unsigned int readbuffer_chunksize;
9bec2387 153 /// write buffer chunk size
948f9ada 154 unsigned int writebuffer_chunksize;
d9f0cce7 155
545820ce 156 // FTDI FT2232C requirecments
9bec2387 157 /// FT2232C interface number: 0 or 1
545820ce 158 int interface; // 0 or 1
9bec2387 159 /// FT2232C index number: 1 or 2
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160 int index; // 1 or 2
161 // Endpoints
9bec2387 162 /// FT2232C end points: 1 or 2
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163 int in_ep;
164 int out_ep; // 1 or 2
c3d95b87 165
9bec2387 166 /// Bitbang mode. 1: (default) Normal bitbang mode, 2: FT2232C SPI bitbang mode
3119537f 167 unsigned char bitbang_mode;
545820ce 168
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169 /// EEPROM size. Default is 128 bytes for 232BM and 245BM chips
170 int eeprom_size;
171
9bec2387 172 /// String representation of last error
a3da1d95 173 char *error_str;
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174
175 /// Buffer needed for async communication
176 char *async_usb_buffer;
177 /// Number of URB-structures we can buffer
178 unsigned int async_usb_buffer_size;
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179};
180
9bec2387 181/**
b5ec1820 182 \brief list of usb devices created by ftdi_usb_find_all()
9bec2387 183*/
edb82cbf 184struct ftdi_device_list {
9bec2387 185 /// pointer to next entry
edb82cbf 186 struct ftdi_device_list *next;
9bec2387 187 /// pointer to libusb's usb_device
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188 struct usb_device *dev;
189};
190
9bec2387 191/**
b5ec1820 192 \brief FTDI eeprom structure
9bec2387 193*/
b8aa7b35 194struct ftdi_eeprom {
9bec2387 195 /// vendor id
d9f0cce7 196 int vendor_id;
9bec2387 197 /// product id
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198 int product_id;
199
9bec2387 200 /// self powered
d9f0cce7 201 int self_powered;
9bec2387 202 /// remote wakepu
b8aa7b35 203 int remote_wakeup;
9bec2387 204 /// chip type
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205 int BM_type_chip;
206
9bec2387 207 /// input in isochronous transfer mode
b8aa7b35 208 int in_is_isochronous;
9bec2387 209 /// output in isochronous transfer mode
b8aa7b35 210 int out_is_isochronous;
9bec2387 211 /// suspend pull downs
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212 int suspend_pull_downs;
213
9bec2387 214 /// use serial
b8aa7b35 215 int use_serial;
9bec2387 216 /// fake usb version
b8aa7b35 217 int change_usb_version;
9bec2387 218 /// usb version
b8aa7b35 219 int usb_version;
9bec2387 220 /// maximum power
b8aa7b35 221 int max_power;
d9f0cce7 222
9bec2387 223 /// manufacturer name
b8aa7b35 224 char *manufacturer;
9bec2387 225 /// product name
b8aa7b35 226 char *product;
9bec2387 227 /// serial number
b8aa7b35 228 char *serial;
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229
230 /// eeprom size in bytes. This doesn't get stored in the eeprom
231 /// but is the only way to pass it to ftdi_eeprom_build.
232 int size;
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233};
234
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235#ifdef __cplusplus
236extern "C" {
237#endif
238
239 int ftdi_init(struct ftdi_context *ftdi);
cef378aa 240 struct ftdi_context *ftdi_new();
0ce2f5fa 241 int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface);
c4446c36 242
948f9ada 243 void ftdi_deinit(struct ftdi_context *ftdi);
cef378aa 244 void ftdi_free(struct ftdi_context *ftdi);
98452d97 245 void ftdi_set_usbdev (struct ftdi_context *ftdi, usb_dev_handle *usbdev);
a01d31e2 246
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247 int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist,
248 int vendor, int product);
249 void ftdi_list_free(struct ftdi_device_list **devlist);
cef378aa 250 void ftdi_list_free2(struct ftdi_device_list *devlist);
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251 int ftdi_usb_get_strings(struct ftdi_context *ftdi, struct usb_device *dev,
252 char * manufacturer, int mnf_len,
253 char * description, int desc_len,
254 char * serial, int serial_len);
a01d31e2 255
a3da1d95 256 int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product);
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257 int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product,
258 const char* description, const char* serial);
edb82cbf 259 int ftdi_usb_open_dev(struct ftdi_context *ftdi, struct usb_device *dev);
1941414d 260
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261 int ftdi_usb_close(struct ftdi_context *ftdi);
262 int ftdi_usb_reset(struct ftdi_context *ftdi);
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263 int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi);
264 int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi);
a60be878 265 int ftdi_usb_purge_buffers(struct ftdi_context *ftdi);
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266
267 int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
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268 int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
269 enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
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270 int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
271 enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity,
272 enum ftdi_break_type break_type);
948f9ada 273
be5d7eec 274 int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
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275 int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
276 int ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
277
278 int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
279 int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
280 int ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
a3da1d95 281
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282 int ftdi_write_data_async(struct ftdi_context *ftdi, unsigned char *buf, int size);
283 void ftdi_async_complete(struct ftdi_context *ftdi, int wait_for_more);
284
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285 int ftdi_enable_bitbang(struct ftdi_context *ftdi, unsigned char bitmask);
286 int ftdi_disable_bitbang(struct ftdi_context *ftdi);
c4446c36 287 int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
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288 int ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins);
289
290 int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency);
291 int ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency);
292
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293 int ftdi_poll_modem_status(struct ftdi_context *ftdi, unsigned short *status);
294
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295 // flow control
296 int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
297 int ftdi_setdtr(struct ftdi_context *ftdi, int state);
298 int ftdi_setrts(struct ftdi_context *ftdi, int state);
299
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300 int ftdi_set_event_char(struct ftdi_context *ftdi, unsigned char eventch, unsigned char enable);
301 int ftdi_set_error_char(struct ftdi_context *ftdi, unsigned char errorch, unsigned char enable);
302
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303 // set eeprom size
304 void ftdi_eeprom_setsize(struct ftdi_context *ftdi, struct ftdi_eeprom *eeprom, int size);
305
98452d97 306 // init and build eeprom from ftdi_eeprom structure
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307 void ftdi_eeprom_initdefaults(struct ftdi_eeprom *eeprom);
308 int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output);
309
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310 // "eeprom" needs to be valid 128 byte eeprom (generated by the eeprom generator)
311 // the checksum of the eeprom is valided
be5d7eec 312 int ftdi_read_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
cb6250fa 313 int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid);
c201f80f 314 int ftdi_read_eeprom_getsize(struct ftdi_context *ftdi, unsigned char *eeprom, int maxsize);
be5d7eec 315 int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
b8aa7b35 316 int ftdi_erase_eeprom(struct ftdi_context *ftdi);
a3da1d95 317
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318 char *ftdi_get_error_string(struct ftdi_context *ftdi);
319
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320#ifdef __cplusplus
321}
322#endif
323
324#endif /* __libftdi_h__ */