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 ***************************************************************************/
23 enum ftdi_chip_type { TYPE_AM=0, TYPE_BM=1, TYPE_2232C=2, TYPE_R=3 };
24 /// Parity mode for ftdi_set_line_property()
25 enum ftdi_parity_type { NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4 };
26 /// Number of stop bits for ftdi_set_line_property()
27 enum ftdi_stopbits_type { STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2 };
28 /// Number of bits ftdi_set_line_property()
29 enum ftdi_bits_type { BITS_7=7, BITS_8=8 };
31 /// MPSSE bitbang modes
32 enum ftdi_mpsse_mode {
34 BITMODE_BITBANG= 0x01,
36 BITMODE_SYNCBB = 0x04,
38 // CPU-style fifo mode gets set via EEPROM
43 /// Port interface for FT2232C
50 /* Shifting commands IN MPSSE Mode*/
51 #define MPSSE_WRITE_NEG 0x01 /* Write TDI/DO on negative TCK/SK edge*/
52 #define MPSSE_BITMODE 0x02 /* Write bits, not bytes */
53 #define MPSSE_READ_NEG 0x04 /* Sample TDO/DI on negative TCK/SK edge */
54 #define MPSSE_LSB 0x08 /* LSB first */
55 #define MPSSE_DO_WRITE 0x10 /* Write TDI/DO */
56 #define MPSSE_DO_READ 0x20 /* Read TDO/DI */
57 #define MPSSE_WRITE_TMS 0x40 /* Write TMS/CS */
59 /* FTDI MPSSE commands */
60 #define SET_BITS_LOW 0x80
63 #define SET_BITS_HIGH 0x82
66 #define GET_BITS_LOW 0x81
67 #define GET_BITS_HIGH 0x83
68 #define LOOPBACK_START 0x84
69 #define LOOPBACK_END 0x85
70 #define TCK_DIVISOR 0x86
72 /* Value HIGH */ /*rate is 12000000/((1+value)*2) */
73 #define DIV_VALUE(rate) (rate > 6000000)?0:((6000000/rate -1) > 0xffff)? 0xffff: (6000000/rate -1)
75 /* Commands in MPSSE and Host Emulation Mode */
76 #define SEND_IMMEDIATE 0x87
77 #define WAIT_ON_HIGH 0x88
78 #define WAIT_ON_LOW 0x89
80 /* Commands in Host Emulation Mode */
81 #define READ_SHORT 0x90
83 #define READ_EXTENDED 0x91
86 #define WRITE_SHORT 0x92
88 #define WRITE_EXTENDED 0x93
92 /* Definitions for flow control */
93 #define SIO_MODEM_CTRL 1 /* Set the modem control register */
94 #define SIO_SET_FLOW_CTRL 2 /* Set flow control register */
96 #define SIO_SET_FLOW_CTRL_REQUEST_TYPE 0x40
97 #define SIO_SET_FLOW_CTRL_REQUEST SIO_SET_FLOW_CTRL
99 #define SIO_DISABLE_FLOW_CTRL 0x0
100 #define SIO_RTS_CTS_HS (0x1 << 8)
101 #define SIO_DTR_DSR_HS (0x2 << 8)
102 #define SIO_XON_XOFF_HS (0x4 << 8)
104 #define SIO_SET_MODEM_CTRL_REQUEST_TYPE 0x40
105 #define SIO_SET_MODEM_CTRL_REQUEST SIO_MODEM_CTRL
107 #define SIO_SET_DTR_MASK 0x1
108 #define SIO_SET_DTR_HIGH ( 1 | ( SIO_SET_DTR_MASK << 8))
109 #define SIO_SET_DTR_LOW ( 0 | ( SIO_SET_DTR_MASK << 8))
110 #define SIO_SET_RTS_MASK 0x2
111 #define SIO_SET_RTS_HIGH ( 2 | ( SIO_SET_RTS_MASK << 8 ))
112 #define SIO_SET_RTS_LOW ( 0 | ( SIO_SET_RTS_MASK << 8 ))
114 #define SIO_RTS_CTS_HS (0x1 << 8)
116 /* marker for unused usb urb structures
117 (taken from libusb) */
118 #define FTDI_URB_USERCONTEXT_COOKIE ((void *)0x1)
121 \brief Main context structure for all libftdi functions.
123 Do not access directly if possible.
125 struct ftdi_context {
127 /// libusb's usb_dev_handle
128 struct usb_dev_handle *usb_dev;
130 int usb_read_timeout;
131 /// usb write timeout
132 int usb_write_timeout;
136 enum ftdi_chip_type type;
139 /// bitbang mode state
140 unsigned char bitbang_enabled;
141 /// pointer to read buffer for ftdi_read_data
142 unsigned char *readbuffer;
143 /// read buffer offset
144 unsigned int readbuffer_offset;
145 /// number of remaining data in internal read buffer
146 unsigned int readbuffer_remaining;
147 /// read buffer chunk size
148 unsigned int readbuffer_chunksize;
149 /// write buffer chunk size
150 unsigned int writebuffer_chunksize;
152 // FTDI FT2232C requirecments
153 /// FT2232C interface number: 0 or 1
154 int interface; // 0 or 1
155 /// FT2232C index number: 1 or 2
158 /// FT2232C end points: 1 or 2
160 int out_ep; // 1 or 2
162 /// Bitbang mode. 1: (default) Normal bitbang mode, 2: FT2232C SPI bitbang mode
163 unsigned char bitbang_mode;
165 /// String representation of last error
168 /// Buffer needed for async communication
169 char *async_usb_buffer;
170 /// Number of URB-structures we can buffer
171 unsigned int async_usb_buffer_size;
175 \brief list of usb devices created by ftdi_usb_find_all()
177 struct ftdi_device_list {
178 /// pointer to next entry
179 struct ftdi_device_list *next;
180 /// pointer to libusb's usb_device
181 struct usb_device *dev;
185 \brief FTDI eeprom structure
200 /// input in isochronous transfer mode
201 int in_is_isochronous;
202 /// output in isochronous transfer mode
203 int out_is_isochronous;
204 /// suspend pull downs
205 int suspend_pull_downs;
210 int change_usb_version;
216 /// manufacturer name
228 int ftdi_init(struct ftdi_context *ftdi);
229 int ftdi_set_interface(struct ftdi_context *ftdi, enum ftdi_interface interface);
231 void ftdi_deinit(struct ftdi_context *ftdi);
232 void ftdi_set_usbdev (struct ftdi_context *ftdi, usb_dev_handle *usbdev);
234 int ftdi_usb_find_all(struct ftdi_context *ftdi, struct ftdi_device_list **devlist,
235 int vendor, int product);
236 void ftdi_list_free(struct ftdi_device_list **devlist);
237 int ftdi_usb_get_strings(struct ftdi_context *ftdi, struct usb_device *dev,
238 char * manufacturer, int mnf_len,
239 char * description, int desc_len,
240 char * serial, int serial_len);
242 int ftdi_usb_open(struct ftdi_context *ftdi, int vendor, int product);
243 int ftdi_usb_open_desc(struct ftdi_context *ftdi, int vendor, int product,
244 const char* description, const char* serial);
245 int ftdi_usb_open_dev(struct ftdi_context *ftdi, struct usb_device *dev);
247 int ftdi_usb_close(struct ftdi_context *ftdi);
248 int ftdi_usb_reset(struct ftdi_context *ftdi);
249 int ftdi_usb_purge_buffers(struct ftdi_context *ftdi);
251 int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
252 int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
253 enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
255 int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
256 int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
257 int ftdi_read_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
259 int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
260 int ftdi_write_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);
261 int ftdi_write_data_get_chunksize(struct ftdi_context *ftdi, unsigned int *chunksize);
263 int ftdi_write_data_async(struct ftdi_context *ftdi, unsigned char *buf, int size);
264 void ftdi_async_complete(struct ftdi_context *ftdi, int wait_for_more);
266 int ftdi_enable_bitbang(struct ftdi_context *ftdi, unsigned char bitmask);
267 int ftdi_disable_bitbang(struct ftdi_context *ftdi);
268 int ftdi_set_bitmode(struct ftdi_context *ftdi, unsigned char bitmask, unsigned char mode);
269 int ftdi_read_pins(struct ftdi_context *ftdi, unsigned char *pins);
271 int ftdi_set_latency_timer(struct ftdi_context *ftdi, unsigned char latency);
272 int ftdi_get_latency_timer(struct ftdi_context *ftdi, unsigned char *latency);
274 // init and build eeprom from ftdi_eeprom structure
275 void ftdi_eeprom_initdefaults(struct ftdi_eeprom *eeprom);
276 int ftdi_eeprom_build(struct ftdi_eeprom *eeprom, unsigned char *output);
278 // "eeprom" needs to be valid 128 byte eeprom (generated by the eeprom generator)
279 // the checksum of the eeprom is valided
280 int ftdi_read_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
281 int ftdi_read_chipid(struct ftdi_context *ftdi, unsigned int *chipid);
282 int ftdi_write_eeprom(struct ftdi_context *ftdi, unsigned char *eeprom);
283 int ftdi_erase_eeprom(struct ftdi_context *ftdi);
285 char *ftdi_get_error_string(struct ftdi_context *ftdi);
288 int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
289 int ftdi_setdtr(struct ftdi_context *ftdi, int state);
290 int ftdi_setrts(struct ftdi_context *ftdi, int state);
296 #endif /* __libftdi_h__ */