1 /***************************************************************************
5 copyright : (C) 2003 by Intra2net AG
6 email : opensource@intra2net.com
7 ***************************************************************************/
9 /***************************************************************************
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; *
15 ***************************************************************************/
22 #define FTDI_DEFAULT_EEPROM_SIZE 128
25 enum ftdi_chip_type { TYPE_AM=0, TYPE_BM=1, TYPE_2232C=2, TYPE_R=3 };
26 /** Parity mode for ftdi_set_line_property() */
27 enum ftdi_parity_type { NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4 };
28 /** Number of stop bits for ftdi_set_line_property() */
29 enum ftdi_stopbits_type { STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2 };
30 /** Number of bits for ftdi_set_line_property() */
31 enum ftdi_bits_type { BITS_7=7, BITS_8=8 };
32 /** Break type for ftdi_set_line_property2() */
33 enum ftdi_break_type { BREAK_OFF=0, BREAK_ON=1 };
35 /** MPSSE bitbang modes */
36 enum ftdi_mpsse_mode {
38 BITMODE_BITBANG= 0x01,
40 BITMODE_SYNCBB = 0x04,
42 /* CPU-style fifo mode gets set via EEPROM */
47 /** Port interface for FT2232C */
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 */
63 /* FTDI MPSSE commands */
64 #define SET_BITS_LOW 0x80
67 #define SET_BITS_HIGH 0x82
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
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)
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
84 /* Commands in Host Emulation Mode */
85 #define READ_SHORT 0x90
87 #define READ_EXTENDED 0x91
90 #define WRITE_SHORT 0x92
92 #define WRITE_EXTENDED 0x93
96 /* Definitions for flow control */
97 #define SIO_RESET 0 /* Reset the port */
98 #define SIO_MODEM_CTRL 1 /* Set the modem control register */
99 #define SIO_SET_FLOW_CTRL 2 /* Set flow control register */
100 #define SIO_SET_BAUD_RATE 3 /* Set baud rate */
101 #define SIO_SET_DATA 4 /* Set the data characteristics of the port */
103 #define SIO_RESET_REQUEST_TYPE 0x40
104 #define SIO_RESET_REQUEST SIO_RESET
105 #define SIO_RESET_SIO 0
106 #define SIO_RESET_PURGE_RX 1
107 #define SIO_RESET_PURGE_TX 2
109 #define SIO_SET_BAUDRATE_REQUEST_TYPE 0x40
110 #define SIO_SET_BAUDRATE_REQUEST SIO_SET_BAUD_RATE
112 #define SIO_SET_DATA_REQUEST_TYPE 0x40
113 #define SIO_SET_DATA_REQUEST SIO_SET_DATA
115 #define SIO_SET_FLOW_CTRL_REQUEST SIO_SET_FLOW_CTRL
116 #define SIO_SET_FLOW_CTRL_REQUEST_TYPE 0x40
118 #define SIO_DISABLE_FLOW_CTRL 0x0
119 #define SIO_RTS_CTS_HS (0x1 << 8)
120 #define SIO_DTR_DSR_HS (0x2 << 8)
121 #define SIO_XON_XOFF_HS (0x4 << 8)
123 #define SIO_SET_MODEM_CTRL_REQUEST_TYPE 0x40
124 #define SIO_SET_MODEM_CTRL_REQUEST SIO_MODEM_CTRL
126 #define SIO_SET_DTR_MASK 0x1
127 #define SIO_SET_DTR_HIGH ( 1 | ( SIO_SET_DTR_MASK << 8))
128 #define SIO_SET_DTR_LOW ( 0 | ( SIO_SET_DTR_MASK << 8))
129 #define SIO_SET_RTS_MASK 0x2
130 #define SIO_SET_RTS_HIGH ( 2 | ( SIO_SET_RTS_MASK << 8 ))
131 #define SIO_SET_RTS_LOW ( 0 | ( SIO_SET_RTS_MASK << 8 ))
133 #define SIO_RTS_CTS_HS (0x1 << 8)
135 /* marker for unused usb urb structures
136 (taken from libusb) */
137 #define FTDI_URB_USERCONTEXT_COOKIE ((void *)0x1)
140 \brief Main context structure for all libftdi functions.
142 Do not access directly if possible.
144 struct ftdi_context {
146 /** libusb's usb_dev_handle */
147 struct usb_dev_handle *usb_dev;
148 /** usb read timeout */
149 int usb_read_timeout;
150 /** usb write timeout */
151 int usb_write_timeout;
154 /** FTDI chip type */
155 enum ftdi_chip_type type;
158 /** bitbang mode state */
159 unsigned char bitbang_enabled;
160 /** pointer to read buffer for ftdi_read_data */
161 unsigned char *readbuffer;
162 /** read buffer offset */
163 unsigned int readbuffer_offset;
164 /** number of remaining data in internal read buffer */
165 unsigned int readbuffer_remaining;
166 /** read buffer chunk size */
167 unsigned int readbuffer_chunksize;
168 /** write buffer chunk size */
169 unsigned int writebuffer_chunksize;
171 /* FTDI FT2232C requirecments */
172 /** FT2232C interface number: 0 or 1 */
173 int interface; /* 0 or 1 */
174 /** FT2232C index number: 1 or 2 */
175 int index; /* 1 or 2 */
177 /** FT2232C end points: 1 or 2 */
179 int out_ep; /* 1 or 2 */
181 /** Bitbang mode. 1: (default) Normal bitbang mode, 2: FT2232C SPI bitbang mode */
182 unsigned char bitbang_mode;
184 /** EEPROM size. Default is 128 bytes for 232BM and 245BM chips */
187 /** String representation of last error */
190 /** Buffer needed for async communication */
191 char *async_usb_buffer;
192 /** Number of URB-structures we can buffer */
193 unsigned int async_usb_buffer_size;
197 \brief list of usb devices created by ftdi_usb_find_all()
199 struct ftdi_device_list {
200 /** pointer to next entry */
201 struct ftdi_device_list *next;
202 /** pointer to libusb's usb_device */
203 struct usb_device *dev;
207 \brief FTDI eeprom structure
222 /** input in isochronous transfer mode */
223 int in_is_isochronous;
224 /** output in isochronous transfer mode */
225 int out_is_isochronous;
226 /** suspend pull downs */
227 int suspend_pull_downs;
231 /** fake usb version */
232 int change_usb_version;
238 /** manufacturer name */
245 /** eeprom size in bytes. This doesn't get stored in the eeprom
246 but is the only way to pass it to ftdi_eeprom_build. */
254 int ftdi_init(struct ftdi_context *ftdi);
255 struct ftdi_context *ftdi_new();
256 int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface);
258 void ftdi_deinit(struct ftdi_context *ftdi);
259 void ftdi_free(struct ftdi_context *ftdi);
260 void ftdi_set_usbdev (struct ftdi_context *ftdi, usb_dev_handle *usbdev);
262 int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist,
263 int vendor, int product);
264 void ftdi_list_free(struct ftdi_device_list **devlist);
265 void ftdi_list_free2(struct ftdi_device_list *devlist);
266 int ftdi_usb_get_strings(struct ftdi_context *ftdi, struct usb_device *dev,
267 char * manufacturer, int mnf_len,
268 char * description, int desc_len,
269 char * serial, int serial_len);
271 int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product);
272 int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product,
273 const char* description, const char* serial);
274 int ftdi_usb_open_dev(struct ftdi_context *ftdi, struct usb_device *dev);
276 int ftdi_usb_close(struct ftdi_context *ftdi);
277 int ftdi_usb_reset(struct ftdi_context *ftdi);
278 int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi);
279 int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi);
280 int ftdi_usb_purge_buffers(struct ftdi_context *ftdi);
282 int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
283 int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
284 enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
285 int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
286 enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity,
287 enum ftdi_break_type break_type);
289 int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
290 int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
291 int ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
293 int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
294 int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
295 int ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
297 int ftdi_write_data_async(struct ftdi_context *ftdi, unsigned char *buf, int size);
298 void ftdi_async_complete(struct ftdi_context *ftdi, int wait_for_more);
300 int ftdi_enable_bitbang(struct ftdi_context *ftdi, unsigned char bitmask);
301 int ftdi_disable_bitbang(struct ftdi_context *ftdi);
302 int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
303 int ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins);
305 int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency);
306 int ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency);
308 int ftdi_poll_modem_status(struct ftdi_context *ftdi, unsigned short *status);
311 int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
312 int ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts);
313 int ftdi_setdtr(struct ftdi_context *ftdi, int state);
314 int ftdi_setrts(struct ftdi_context *ftdi, int state);
316 int ftdi_set_event_char(struct ftdi_context *ftdi, unsigned char eventch, unsigned char enable);
317 int ftdi_set_error_char(struct ftdi_context *ftdi, unsigned char errorch, unsigned char enable);
319 /* set eeprom size */
320 void ftdi_eeprom_setsize(struct ftdi_context *ftdi, struct ftdi_eeprom *eeprom, int size);
322 /* init and build eeprom from ftdi_eeprom structure */
323 void ftdi_eeprom_initdefaults(struct ftdi_eeprom *eeprom);
324 int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output);
326 /* "eeprom" needs to be valid 128 byte eeprom (generated by the eeprom generator)
327 the checksum of the eeprom is valided */
328 int ftdi_read_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
329 int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid);
330 int ftdi_read_eeprom_getsize(struct ftdi_context *ftdi, unsigned char *eeprom, int maxsize);
331 int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
332 int ftdi_erase_eeprom(struct ftdi_context *ftdi);
334 char *ftdi_get_error_string(struct ftdi_context *ftdi);
340 #endif /* __libftdi_h__ */