1 /***************************************************************************
4 begin : Mon Apr 7 12:05:22 CEST 2003
5 copyright : (C) 2003-2014 by Intra2net AG and the libftdi developers
6 email : opensource@intra2net.com
7 SPDX-License-Identifier: GPL-2.0-only
8 ***************************************************************************/
10 /***************************************************************************
12 * This program is free software; you can redistribute it and/or modify *
13 * it under the terms of the GNU General Public License version 2 as *
14 * published by the Free Software Foundation. *
16 ***************************************************************************/
20 - Merge Uwe's eeprom tool. Current features:
21 - Init eeprom defaults based upon eeprom type
22 - Read -> Already there
23 - Write -> Already there
24 - Erase -> Already there
26 - Ability to find device by PID/VID, product name or serial
29 - Out-of-the-box compatibility with FTDI's eeprom tool configuration files
45 #include <ftdi_eeprom_version.h>
47 static int parse_cbus(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
49 static const char* options[] =
51 "TXDEN", "PWREN", "RXLED", "TXLED", "TXRXLED", "SLEEP", "CLK48",
52 "CLK24", "CLK12", "CLK6", "IOMODE", "BB_WR", "BB_RD"
56 for (i=0; i<sizeof(options)/sizeof(*options); i++)
58 if (!(strcmp(options[i], value)))
65 cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
69 static int parse_group0_drive(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
71 static const char* options[] =
73 "4MA", "8MA", "12MA", "16MA"
77 for (i=0; i<sizeof(options)/sizeof(*options); i++)
79 if (!(strcasecmp(options[i], value)))
86 cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
90 static int parse_cbush(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
92 static const char* options[] =
94 "TRISTATE", "TXLED", "RXLED", "TXRXLED", "PWREN", "SLEEP",
95 "DRIVE_0", "DRIVE1", "IOMODE", "TXDEN", "CLK30", "CLK15", "CLK7_5"
99 for (i=0; i<sizeof(options)/sizeof(*options); i++)
101 if (!(strcmp(options[i], value)))
108 cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
112 static int parse_cbusx(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
114 static const char* options[] =
116 "TRISTATE", "TXLED", "RXLED", "TXRXLED", "PWREN", "SLEEP",
117 "DRIVE_0", "DRIVE1", "IOMODE", "TXDEN", "CLK24", "CLK12",
118 "CLK6", "BAT_DETECT", "BAT_DETECT_NEG", "I2C_TXE", "I2C_RXF", "VBUS_SENSE",
119 "BB_WR", "BB_RD", "TIME_STAMP", "AWAKE"
123 for (i=0; i<sizeof(options)/sizeof(*options); i++)
125 if (!(strcmp(options[i], value)))
132 cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
136 static int parse_chtype(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
144 { "UART", CHANNEL_IS_UART },
145 { "FIFO", CHANNEL_IS_FIFO },
146 { "OPTO", CHANNEL_IS_OPTO },
147 { "CPU", CHANNEL_IS_CPU },
148 { "FT1284", CHANNEL_IS_FT1284}
152 for (i=0; i<sizeof(options)/sizeof(*options); i++)
154 if (!(strcmp(options[i].key, value)))
156 *(int *)result = options[i].opt;
161 cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
166 * @brief Set eeprom value
168 * \param ftdi pointer to ftdi_context
169 * \param value_name Enum of the value to set
170 * \param value Value to set
172 * Function will abort the program on error
174 static void eeprom_set_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int value)
176 if (ftdi_set_eeprom_value(ftdi, value_name, value) < 0)
178 printf("Unable to set eeprom value %d: %s. Aborting\n", value_name, ftdi_get_error_string(ftdi));
184 * @brief Get eeprom value
186 * \param ftdi pointer to ftdi_context
187 * \param value_name Enum of the value to get
188 * \param value Value to get
190 * Function will abort the program on error
192 static void eeprom_get_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int *value)
194 if (ftdi_get_eeprom_value(ftdi, value_name, value) < 0)
196 printf("Unable to get eeprom value %d: %s. Aborting\n", value_name, ftdi_get_error_string(ftdi));
201 static void usage(const char *program)
203 fprintf(stderr, "Syntax: %s [...options...] <config-file>\n", program);
204 fprintf(stderr, "Valid Options:\n");
205 fprintf(stderr, "--device <description> Specify device to open by description string. One of:\n");
206 fprintf(stderr, " d:<devicenode>\n");
207 fprintf(stderr, " i:<vendor>:<product>\n");
208 fprintf(stderr, " i:<vendor>:<product>:<index>\n");
209 fprintf(stderr, " s:<vendor>:<product>:<serial>\n");
210 fprintf(stderr, "--read-eeprom Read eeprom and write to -filename- from config-file\n");
211 fprintf(stderr, "--build-eeprom Build eeprom image\n");
212 fprintf(stderr, "--erase-eeprom Erase eeprom\n");
213 fprintf(stderr, "--flash-eeprom Flash eeprom\n");
216 int main(int argc, char *argv[])
219 configuration options
223 CFG_INT("vendor_id", 0, 0),
224 CFG_INT("product_id", 0, 0),
225 CFG_BOOL("self_powered", cfg_true, 0),
226 CFG_BOOL("remote_wakeup", cfg_true, 0),
227 CFG_BOOL("in_is_isochronous", cfg_false, 0),
228 CFG_BOOL("out_is_isochronous", cfg_false, 0),
229 CFG_BOOL("suspend_pull_downs", cfg_false, 0),
230 CFG_BOOL("use_serial", cfg_false, 0),
231 CFG_BOOL("change_usb_version", cfg_false, 0),
232 CFG_INT("usb_version", 0, 0),
233 CFG_INT("default_pid", 0x6001, 0),
234 CFG_INT("max_power", 0, 0),
235 CFG_STR("manufacturer", "Acme Inc.", 0),
236 CFG_STR("product", "USB Serial Converter", 0),
237 CFG_STR("serial", "08-15", 0),
238 CFG_INT("eeprom_type", 0x00, 0),
239 CFG_STR("filename", "", 0),
240 CFG_BOOL("flash_raw", cfg_false, 0),
241 CFG_BOOL("high_current", cfg_false, 0),
242 CFG_INT_CB("cbus0", -1, 0, parse_cbus),
243 CFG_INT_CB("cbus1", -1, 0, parse_cbus),
244 CFG_INT_CB("cbus2", -1, 0, parse_cbus),
245 CFG_INT_CB("cbus3", -1, 0, parse_cbus),
246 CFG_INT_CB("cbus4", -1, 0, parse_cbus),
247 CFG_INT_CB("cbush0", -1, 0, parse_cbush),
248 CFG_INT_CB("cbush1", -1, 0, parse_cbush),
249 CFG_INT_CB("cbush2", -1, 0, parse_cbush),
250 CFG_INT_CB("cbush3", -1, 0, parse_cbush),
251 CFG_INT_CB("cbush4", -1, 0, parse_cbush),
252 CFG_INT_CB("cbush5", -1, 0, parse_cbush),
253 CFG_INT_CB("cbush6", -1, 0, parse_cbush),
254 CFG_INT_CB("cbush7", -1, 0, parse_cbush),
255 CFG_INT_CB("cbush8", -1, 0, parse_cbush),
256 CFG_INT_CB("cbush9", -1, 0, parse_cbush),
257 CFG_INT_CB("cbusx0", -1, 0, parse_cbusx),
258 CFG_INT_CB("cbusx1", -1, 0, parse_cbusx),
259 CFG_INT_CB("cbusx2", -1, 0, parse_cbusx),
260 CFG_INT_CB("cbusx3", -1, 0, parse_cbusx),
261 CFG_INT_CB("group0_drive", -1, 0, parse_group0_drive),
262 CFG_BOOL("invert_txd", cfg_false, 0),
263 CFG_BOOL("invert_rxd", cfg_false, 0),
264 CFG_BOOL("invert_rts", cfg_false, 0),
265 CFG_BOOL("invert_cts", cfg_false, 0),
266 CFG_BOOL("invert_dtr", cfg_false, 0),
267 CFG_BOOL("invert_dsr", cfg_false, 0),
268 CFG_BOOL("invert_dcd", cfg_false, 0),
269 CFG_BOOL("invert_ri", cfg_false, 0),
270 CFG_INT_CB("cha_type", -1, 0, parse_chtype),
271 CFG_INT_CB("chb_type", -1, 0, parse_chtype),
272 CFG_BOOL("cha_vcp", cfg_true, 0),
273 CFG_BOOL("chb_vcp", cfg_true, 0),
274 CFG_BOOL("chc_vcp", cfg_true, 0),
275 CFG_BOOL("chd_vcp", cfg_true, 0),
276 CFG_BOOL("cha_rs485", cfg_false, 0),
277 CFG_BOOL("chb_rs485", cfg_false, 0),
278 CFG_BOOL("chc_rs485", cfg_false, 0),
279 CFG_BOOL("chd_rs485", cfg_false, 0),
280 CFG_FUNC("include", &cfg_include),
281 CFG_INT("user_data_addr", 0x18, 0),
282 CFG_STR("user_data_file", "", 0),
296 const char *cfg_filename = NULL;
297 const char *device_description = NULL;
298 const char *user_data_file = NULL;
299 char *user_data_buffer = NULL;
301 const int max_eeprom_size = 256;
302 int my_eeprom_size = 0;
303 unsigned char *eeprom_buf = NULL;
309 struct ftdi_context *ftdi = NULL;
311 printf("\nFTDI eeprom generator v%s\n", EEPROM_VERSION_STRING);
312 printf ("(c) Intra2net AG and the libftdi developers <opensource@intra2net.com>\n");
314 for (i = 1; i < argc; i++) {
317 cfg_filename = argv[i];
319 else if (!strcmp(argv[i], "--device"))
326 device_description = argv[++i];
328 else if (!strcmp(argv[i], "--read-eeprom"))
330 command = COMMAND_READ;
332 else if (!strcmp(argv[i], "--erase-eeprom"))
334 command = COMMAND_ERASE;
336 else if (!strcmp(argv[i], "--flash-eeprom"))
338 command = COMMAND_FLASH;
340 else if (!strcmp(argv[i], "--build-eeprom"))
342 command = COMMAND_BUILD;
357 if ((fp = fopen(cfg_filename, "r")) == NULL)
359 printf ("Can't open configuration file\n");
364 cfg = cfg_init(opts, 0);
365 cfg_parse(cfg, cfg_filename);
366 filename = cfg_getstr(cfg, "filename");
368 if (cfg_getbool(cfg, "self_powered") && cfg_getint(cfg, "max_power") > 0)
369 printf("Hint: Self powered devices should have a max_power setting of 0.\n");
371 if ((ftdi = ftdi_new()) == 0)
373 fprintf(stderr, "Failed to allocate ftdi structure :%s \n",
374 ftdi_get_error_string(ftdi));
378 if (device_description != NULL)
380 i = ftdi_usb_open_string(ftdi, device_description);
384 printf("Unable to find FTDI device with description: %s\n",
386 printf("Error code: %d (%s)\n", i, ftdi_get_error_string(ftdi));
390 else if (command > 0)
392 int vendor_id = cfg_getint(cfg, "vendor_id");
393 int product_id = cfg_getint(cfg, "product_id");
395 i = ftdi_usb_open(ftdi, vendor_id, product_id);
399 int default_pid = cfg_getint(cfg, "default_pid");
400 printf("Unable to find FTDI devices under given vendor/product id: 0x%X/0x%X\n", vendor_id, product_id);
401 printf("Error code: %d (%s)\n", i, ftdi_get_error_string(ftdi));
402 printf("Retrying with default FTDI pid=%#04x.\n", default_pid);
404 i = ftdi_usb_open(ftdi, 0x0403, default_pid);
407 printf("Error: %s\n", ftdi->error_str);
412 ftdi_eeprom_initdefaults (ftdi, cfg_getstr(cfg, "manufacturer"),
413 cfg_getstr(cfg, "product"),
414 cfg_getstr(cfg, "serial"));
416 printf("FTDI read eeprom: %d\n", ftdi_read_eeprom(ftdi));
417 eeprom_get_value(ftdi, CHIP_SIZE, &my_eeprom_size);
418 printf("EEPROM size: %d\n", my_eeprom_size);
420 if (command == COMMAND_READ)
422 ftdi_eeprom_decode(ftdi, 0 /* debug: 1 */);
424 eeprom_buf = malloc(my_eeprom_size);
425 ftdi_get_eeprom_buf(ftdi, eeprom_buf, my_eeprom_size);
427 if (eeprom_buf == NULL)
429 fprintf(stderr, "Malloc failed, aborting\n");
432 if (filename != NULL && strlen(filename) > 0)
434 FILE *fp = fopen (filename, "wb");
438 fwrite(eeprom_buf, 1, my_eeprom_size, fp);
442 fprintf(stderr, "Could not open output file %s: %s\n", filename, strerror(errno));
446 printf("Warning: Not writing eeprom, you must supply a valid filename\n");
452 eeprom_set_value(ftdi, VENDOR_ID, cfg_getint(cfg, "vendor_id"));
453 eeprom_set_value(ftdi, PRODUCT_ID, cfg_getint(cfg, "product_id"));
455 eeprom_set_value(ftdi, SELF_POWERED, cfg_getbool(cfg, "self_powered"));
456 eeprom_set_value(ftdi, REMOTE_WAKEUP, cfg_getbool(cfg, "remote_wakeup"));
457 eeprom_set_value(ftdi, MAX_POWER, cfg_getint(cfg, "max_power"));
459 eeprom_set_value(ftdi, IN_IS_ISOCHRONOUS, cfg_getbool(cfg, "in_is_isochronous"));
460 eeprom_set_value(ftdi, OUT_IS_ISOCHRONOUS, cfg_getbool(cfg, "out_is_isochronous"));
461 eeprom_set_value(ftdi, SUSPEND_PULL_DOWNS, cfg_getbool(cfg, "suspend_pull_downs"));
463 eeprom_set_value(ftdi, USE_SERIAL, cfg_getbool(cfg, "use_serial"));
464 eeprom_set_value(ftdi, USE_USB_VERSION, cfg_getbool(cfg, "change_usb_version"));
465 eeprom_set_value(ftdi, USB_VERSION, cfg_getint(cfg, "usb_version"));
466 eeprom_set_value(ftdi, CHIP_TYPE, cfg_getint(cfg, "eeprom_type"));
468 eeprom_set_value(ftdi, HIGH_CURRENT, cfg_getbool(cfg, "high_current"));
470 if (ftdi->type == TYPE_R)
472 if (cfg_getint(cfg, "cbus0") != -1)
473 eeprom_set_value(ftdi, CBUS_FUNCTION_0, cfg_getint(cfg, "cbus0"));
474 if (cfg_getint(cfg, "cbus1") != -1)
475 eeprom_set_value(ftdi, CBUS_FUNCTION_1, cfg_getint(cfg, "cbus1"));
476 if (cfg_getint(cfg, "cbus2") != -1)
477 eeprom_set_value(ftdi, CBUS_FUNCTION_2, cfg_getint(cfg, "cbus2"));
478 if (cfg_getint(cfg, "cbus3") != -1)
479 eeprom_set_value(ftdi, CBUS_FUNCTION_3, cfg_getint(cfg, "cbus3"));
480 if (cfg_getint(cfg, "cbus4") != -1)
481 eeprom_set_value(ftdi, CBUS_FUNCTION_4, cfg_getint(cfg, "cbus4"));
483 else if (ftdi->type == TYPE_232H)
485 if (cfg_getint(cfg, "cbush0") != -1)
486 eeprom_set_value(ftdi, CBUS_FUNCTION_0, cfg_getint(cfg, "cbush0"));
487 if (cfg_getint(cfg, "cbush1") != -1)
488 eeprom_set_value(ftdi, CBUS_FUNCTION_1, cfg_getint(cfg, "cbush1"));
489 if (cfg_getint(cfg, "cbush2") != -1)
490 eeprom_set_value(ftdi, CBUS_FUNCTION_2, cfg_getint(cfg, "cbush2"));
491 if (cfg_getint(cfg, "cbush3") != -1)
492 eeprom_set_value(ftdi, CBUS_FUNCTION_3, cfg_getint(cfg, "cbush3"));
493 if (cfg_getint(cfg, "cbush4") != -1)
494 eeprom_set_value(ftdi, CBUS_FUNCTION_4, cfg_getint(cfg, "cbush4"));
495 if (cfg_getint(cfg, "cbush5") != -1)
496 eeprom_set_value(ftdi, CBUS_FUNCTION_5, cfg_getint(cfg, "cbush5"));
497 if (cfg_getint(cfg, "cbush6") != -1)
498 eeprom_set_value(ftdi, CBUS_FUNCTION_6, cfg_getint(cfg, "cbush6"));
499 if (cfg_getint(cfg, "cbush7") != -1)
500 eeprom_set_value(ftdi, CBUS_FUNCTION_7, cfg_getint(cfg, "cbush7"));
501 if (cfg_getint(cfg, "cbush8") != -1)
502 eeprom_set_value(ftdi, CBUS_FUNCTION_8, cfg_getint(cfg, "cbush8"));
503 if (cfg_getint(cfg, "cbush9") != -1)
504 eeprom_set_value(ftdi, CBUS_FUNCTION_9, cfg_getint(cfg, "cbush9"));
505 if (cfg_getint(cfg, "group0_drive") != -1)
506 eeprom_set_value(ftdi, GROUP0_DRIVE, cfg_getint(cfg, "group0_drive"));
508 else if (ftdi->type == TYPE_230X)
510 if (cfg_getint(cfg, "cbusx0") != -1)
511 eeprom_set_value(ftdi, CBUS_FUNCTION_0, cfg_getint(cfg, "cbusx0"));
512 if (cfg_getint(cfg, "cbusx1") != -1)
513 eeprom_set_value(ftdi, CBUS_FUNCTION_1, cfg_getint(cfg, "cbusx1"));
514 if (cfg_getint(cfg, "cbusx2") != -1)
515 eeprom_set_value(ftdi, CBUS_FUNCTION_2, cfg_getint(cfg, "cbusx2"));
516 if (cfg_getint(cfg, "cbusx3") != -1)
517 eeprom_set_value(ftdi, CBUS_FUNCTION_3, cfg_getint(cfg, "cbusx3"));
521 if (cfg_getbool(cfg, "invert_rxd")) invert |= INVERT_RXD;
522 if (cfg_getbool(cfg, "invert_txd")) invert |= INVERT_TXD;
523 if (cfg_getbool(cfg, "invert_rts")) invert |= INVERT_RTS;
524 if (cfg_getbool(cfg, "invert_cts")) invert |= INVERT_CTS;
525 if (cfg_getbool(cfg, "invert_dtr")) invert |= INVERT_DTR;
526 if (cfg_getbool(cfg, "invert_dsr")) invert |= INVERT_DSR;
527 if (cfg_getbool(cfg, "invert_dcd")) invert |= INVERT_DCD;
528 if (cfg_getbool(cfg, "invert_ri")) invert |= INVERT_RI;
529 eeprom_set_value(ftdi, INVERT, invert);
531 if (cfg_getint(cfg, "cha_type") != -1)
532 eeprom_set_value(ftdi, CHANNEL_A_TYPE, cfg_getint(cfg, "cha_type"));
533 if (cfg_getint(cfg, "chb_type") != -1)
534 eeprom_set_value(ftdi, CHANNEL_B_TYPE, cfg_getint(cfg, "chb_type"));
536 eeprom_set_value(ftdi, CHANNEL_A_DRIVER,
537 cfg_getbool(cfg, "cha_vcp") ? DRIVER_VCP : 0);
538 eeprom_set_value(ftdi, CHANNEL_B_DRIVER,
539 cfg_getbool(cfg, "chb_vcp") ? DRIVER_VCP : 0);
540 eeprom_set_value(ftdi, CHANNEL_C_DRIVER,
541 cfg_getbool(cfg, "chc_vcp") ? DRIVER_VCP : 0);
542 eeprom_set_value(ftdi, CHANNEL_D_DRIVER,
543 cfg_getbool(cfg, "chd_vcp") ? DRIVER_VCP : 0);
545 eeprom_set_value(ftdi, CHANNEL_A_RS485, cfg_getbool(cfg, "cha_rs485"));
546 eeprom_set_value(ftdi, CHANNEL_B_RS485, cfg_getbool(cfg, "chb_rs485"));
547 eeprom_set_value(ftdi, CHANNEL_C_RS485, cfg_getbool(cfg, "chc_rs485"));
548 eeprom_set_value(ftdi, CHANNEL_D_RS485, cfg_getbool(cfg, "chd_rs485"));
550 /* Arbitrary user data */
551 eeprom_set_value(ftdi, USER_DATA_ADDR, cfg_getint(cfg, "user_data_addr"));
552 user_data_file = cfg_getstr(cfg, "user_data_file");
553 if (user_data_file && strlen(user_data_file) > 0)
558 printf("User data file: %s\n", user_data_file);
559 /* Allocate a buffer for the user data */
560 user_data_buffer = (char *)malloc(max_eeprom_size);
561 if (user_data_buffer == NULL)
563 fprintf(stderr, "Malloc failed, aborting\n");
567 if (stat(user_data_file, &st))
569 printf ("Can't stat user data file %s.\n", user_data_file);
572 if (st.st_size > max_eeprom_size)
573 printf("Warning: %s is too big, only reading %d bytes\n",
574 user_data_file, max_eeprom_size);
575 /* Read the user data file, no more than max_eeprom_size bytes */
576 FILE *fp = fopen(user_data_file, "rb");
579 printf ("Can't open user data file %s.\n", user_data_file);
582 data_size = fread(user_data_buffer, 1, max_eeprom_size, fp);
586 printf ("Can't read user data file %s.\n", user_data_file);
589 printf("User data size: %d\n", data_size);
591 ftdi_set_eeprom_user_data(ftdi, user_data_buffer, data_size);
595 if (command == COMMAND_ERASE)
597 printf("FTDI erase eeprom: %d\n", ftdi_erase_eeprom(ftdi));
600 size_check = ftdi_eeprom_build(ftdi);
601 eeprom_get_value(ftdi, CHIP_SIZE, &my_eeprom_size);
603 if (size_check == -1)
605 printf ("Sorry, the eeprom can only contain %d bytes.\n", my_eeprom_size);
608 else if (size_check < 0)
610 printf ("ftdi_eeprom_build(): error: %d\n", size_check);
615 printf ("Used eeprom space: %d bytes\n", my_eeprom_size-size_check);
618 if (command == COMMAND_FLASH)
620 if (cfg_getbool(cfg, "flash_raw"))
622 if (filename != NULL && strlen(filename) > 0)
624 eeprom_buf = malloc(max_eeprom_size);
625 FILE *fp = fopen(filename, "rb");
628 printf ("Can't open eeprom file %s.\n", filename);
631 my_eeprom_size = fread(eeprom_buf, 1, max_eeprom_size, fp);
633 if (my_eeprom_size < 128)
635 printf ("Can't read eeprom file %s.\n", filename);
639 printf("Flashing raw eeprom from file %s (%d bytes)\n",
640 filename, my_eeprom_size);
642 ftdi_set_eeprom_buf(ftdi, eeprom_buf, my_eeprom_size);
645 printf ("ERROR: flash_raw mode enabled, but no eeprom filename "
646 "given in config file.\n");
650 printf ("FTDI write eeprom: %d\n", ftdi_write_eeprom(ftdi));
651 libusb_reset_device(ftdi->usb_dev);
655 if (filename != NULL && strlen(filename) > 0 && !cfg_getbool(cfg, "flash_raw"))
657 fp = fopen(filename, "w");
660 printf ("Can't write eeprom file.\n");
664 printf ("Writing to file: %s\n", filename);
666 if (eeprom_buf == NULL)
667 eeprom_buf = malloc(my_eeprom_size);
668 ftdi_get_eeprom_buf(ftdi, eeprom_buf, my_eeprom_size);
670 fwrite(eeprom_buf, my_eeprom_size, 1, fp);
677 if (user_data_buffer)
678 free(user_data_buffer);
681 printf("FTDI close: %d\n", ftdi_usb_close(ftdi));