text: /***************************************************************************
                               main.c  -  description
                             -------------------
      begin                : Mon Apr  7 12:05:22 CEST 2003
      copyright            : (C) 2003-2014 by Intra2net AG and the libftdi developers
      email                : opensource@intra2net.com
   ***************************************************************************/
  
  /***************************************************************************
   *                                                                         *
   *   This program is free software; you can redistribute it and/or modify  *
   *   it under the terms of the GNU General Public License version 2 as     *
   *   published by the Free Software Foundation.                            *
   *                                                                         *
   ***************************************************************************/
  
  /*
   TODO:
      - Merge Uwe's eeprom tool. Current features:
          - Init eeprom defaults based upon eeprom type
          - Read -> Already there
          - Write -> Already there
          - Erase -> Already there
          - Decode on stdout
          - Ability to find device by PID/VID, product name or serial
  
   TODO nice-to-have:
      - Out-of-the-box compatibility with FTDI's eeprom tool configuration files
   */
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include <errno.h>
  #include <sys/stat.h>
  
  #include <confuse.h>
  #include <libusb.h>
  #include <ftdi.h>
  #include <ftdi_eeprom_version.h>
  
  static int parse_cbus(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
  {
      static const char* options[] =
      {
          "TXDEN", "PWREN", "RXLED", "TXLED", "TXRXLED", "SLEEP", "CLK48",
          "CLK24", "CLK12", "CLK6", "IOMODE", "BB_WR", "BB_RD"
      };
  
      int i;
      for (i=0; i<sizeof(options)/sizeof(*options); i++)
      {
          if (!(strcmp(options[i], value)))
          {
              *(int *)result = i;
              return 0;
          }
      }
  
      cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
      return -1;
  }
  
  static int parse_cbush(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
  {
      static const char* options[] =
      {
          "TRISTATE", "TXLED", "RXLED", "TXRXLED", "PWREN", "SLEEP",
          "DRIVE_0", "DRIVE1", "IOMODE", "TXDEN", "CLK30", "CLK15", "CLK7_5"
      };
  
      int i;
      for (i=0; i<sizeof(options)/sizeof(*options); i++)
      {
          if (!(strcmp(options[i], value)))
          {
              *(int *)result = i;
              return 0;
          }
      }
  
      cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
      return -1;
  }
  
  static int parse_cbusx(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
  {
      static const char* options[] =
      {
          "TRISTATE", "TXLED", "RXLED", "TXRXLED", "PWREN", "SLEEP",
          "DRIVE_0", "DRIVE1", "IOMODE", "TXDEN", "CLK24", "CLK12",
          "CLK6", "BAT_DETECT", "BAT_DETECT_NEG", "I2C_TXE", "I2C_RXF", "VBUS_SENSE",
          "BB_WR", "BB_RD", "TIME_STAMP", "AWAKE"
      };
  
      int i;
      for (i=0; i<sizeof(options)/sizeof(*options); i++)
      {
          if (!(strcmp(options[i], value)))
          {
              *(int *)result = i;
              return 0;
          }
      }
  
      cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
      return -1;
  }
  
  static int parse_chtype(cfg_t *cfg, cfg_opt_t *opt, const char *value, void *result)
  {
      static const struct
      {
          char* key;
  	int   opt;
      } options[] =
      {
          { "UART",   CHANNEL_IS_UART },
          { "FIFO",   CHANNEL_IS_FIFO },
          { "OPTO",   CHANNEL_IS_OPTO },
          { "CPU",    CHANNEL_IS_CPU },
          { "FT1284", CHANNEL_IS_FT1284}
      };
  
      int i;
      for (i=0; i<sizeof(options)/sizeof(*options); i++)
      {
          if (!(strcmp(options[i].key, value)))
          {
              *(int *)result = options[i].opt;
              return 0;
          }
      }
  
      cfg_error(cfg, "Invalid %s option '%s'", cfg_opt_name(opt), value);
      return -1;
  }
  
  /**
   * @brief Set eeprom value
   *
   * \param ftdi pointer to ftdi_context
   * \param value_name Enum of the value to set
   * \param value Value to set
   *
   * Function will abort the program on error
   **/
  static void eeprom_set_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int value)
  {
      if (ftdi_set_eeprom_value(ftdi, value_name, value) < 0)
      {
          printf("Unable to set eeprom value %d: %s. Aborting\n", value_name, ftdi_get_error_string(ftdi));
          exit (-1);
      }
  }
  
  /**
   * @brief Get eeprom value
   *
   * \param ftdi pointer to ftdi_context
   * \param value_name Enum of the value to get
   * \param value Value to get
   *
   * Function will abort the program on error
   **/
  static void eeprom_get_value(struct ftdi_context *ftdi, enum ftdi_eeprom_value value_name, int *value)
  {
      if (ftdi_get_eeprom_value(ftdi, value_name, value) < 0)
      {
          printf("Unable to get eeprom value %d: %s. Aborting\n", value_name, ftdi_get_error_string(ftdi));
          exit (-1);
      }
  }
  
  static void usage(const char *program)
  {
      fprintf(stderr, "Syntax: %s [...options...] <config-file>\n", program);
      fprintf(stderr, "Valid Options:\n");
      fprintf(stderr, "--device <description>  Specify device to open by description string. One of:\n");
      fprintf(stderr, "         d:<devicenode>\n");
      fprintf(stderr, "         i:<vendor>:<product>\n");
      fprintf(stderr, "         i:<vendor>:<product>:<index>\n");
      fprintf(stderr, "         s:<vendor>:<product>:<serial>\n");
      fprintf(stderr, "--read-eeprom           Read eeprom and write to -filename- from config-file\n");
      fprintf(stderr, "--build-eeprom          Build eeprom image\n");
      fprintf(stderr, "--erase-eeprom          Erase eeprom\n");
      fprintf(stderr, "--flash-eeprom          Flash eeprom\n");
  }
  
  int main(int argc, char *argv[])
  {
      /*
      configuration options
      */
      cfg_opt_t opts[] =
      {
          CFG_INT("vendor_id", 0, 0),
          CFG_INT("product_id", 0, 0),
          CFG_BOOL("self_powered", cfg_true, 0),
          CFG_BOOL("remote_wakeup", cfg_true, 0),
          CFG_BOOL("in_is_isochronous", cfg_false, 0),
          CFG_BOOL("out_is_isochronous", cfg_false, 0),
          CFG_BOOL("suspend_pull_downs", cfg_false, 0),
          CFG_BOOL("use_serial", cfg_false, 0),
          CFG_BOOL("change_usb_version", cfg_false, 0),
          CFG_INT("usb_version", 0, 0),
          CFG_INT("default_pid", 0x6001, 0),
          CFG_INT("max_power", 0, 0),
          CFG_STR("manufacturer", "Acme Inc.", 0),
          CFG_STR("product", "USB Serial Converter", 0),
          CFG_STR("serial", "08-15", 0),
          CFG_INT("eeprom_type", 0x00, 0),
          CFG_STR("filename", "", 0),
          CFG_BOOL("flash_raw", cfg_false, 0),
          CFG_BOOL("high_current", cfg_false, 0),
          CFG_INT_CB("cbus0", -1, 0, parse_cbus),
          CFG_INT_CB("cbus1", -1, 0, parse_cbus),
          CFG_INT_CB("cbus2", -1, 0, parse_cbus),
          CFG_INT_CB("cbus3", -1, 0, parse_cbus),
          CFG_INT_CB("cbus4", -1, 0, parse_cbus),
          CFG_INT_CB("cbush0", -1, 0, parse_cbush),
          CFG_INT_CB("cbush1", -1, 0, parse_cbush),
          CFG_INT_CB("cbush2", -1, 0, parse_cbush),
          CFG_INT_CB("cbush3", -1, 0, parse_cbush),
          CFG_INT_CB("cbush4", -1, 0, parse_cbush),
          CFG_INT_CB("cbush5", -1, 0, parse_cbush),
          CFG_INT_CB("cbush6", -1, 0, parse_cbush),
          CFG_INT_CB("cbush7", -1, 0, parse_cbush),
          CFG_INT_CB("cbush8", -1, 0, parse_cbush),
          CFG_INT_CB("cbush9", -1, 0, parse_cbush),
          CFG_INT_CB("cbusx0", -1, 0, parse_cbusx),
          CFG_INT_CB("cbusx1", -1, 0, parse_cbusx),
          CFG_INT_CB("cbusx2", -1, 0, parse_cbusx),
          CFG_INT_CB("cbusx3", -1, 0, parse_cbusx),
          CFG_BOOL("invert_txd", cfg_false, 0),
          CFG_BOOL("invert_rxd", cfg_false, 0),
          CFG_BOOL("invert_rts", cfg_false, 0),
          CFG_BOOL("invert_cts", cfg_false, 0),
          CFG_BOOL("invert_dtr", cfg_false, 0),
          CFG_BOOL("invert_dsr", cfg_false, 0),
          CFG_BOOL("invert_dcd", cfg_false, 0),
          CFG_BOOL("invert_ri", cfg_false, 0),
          CFG_INT_CB("cha_type", -1, 0, parse_chtype),
          CFG_INT_CB("chb_type", -1, 0, parse_chtype),
          CFG_BOOL("cha_vcp", cfg_true, 0),
          CFG_BOOL("chb_vcp", cfg_true, 0),
          CFG_BOOL("chc_vcp", cfg_true, 0),
          CFG_BOOL("chd_vcp", cfg_true, 0),
          CFG_BOOL("cha_rs485", cfg_false, 0),
          CFG_BOOL("chb_rs485", cfg_false, 0),
          CFG_BOOL("chc_rs485", cfg_false, 0),
          CFG_BOOL("chd_rs485", cfg_false, 0),
          CFG_FUNC("include", &cfg_include),
          CFG_INT("user_data_addr", 0x18, 0),
          CFG_STR("user_data_file", "", 0),
          CFG_END()
      };
      cfg_t *cfg;
  
      /*
      normal variables
      */
      enum {
          COMMAND_READ = 1,
          COMMAND_ERASE,
          COMMAND_FLASH,
          COMMAND_BUILD
      } command = 0;
      const char *cfg_filename = NULL;
      const char *device_description = NULL;
      const char *user_data_file = NULL;
      char *user_data_buffer = NULL;
  
      const int max_eeprom_size = 256;
      int my_eeprom_size = 0;
      unsigned char *eeprom_buf = NULL;
      char *filename;
      int size_check;
      int i;
      FILE *fp;
  
      struct ftdi_context *ftdi = NULL;
  
      printf("\nFTDI eeprom generator v%s\n", EEPROM_VERSION_STRING);
      printf ("(c) Intra2net AG and the libftdi developers <opensource@intra2net.com>\n");
  
      for (i = 1; i < argc; i++) {
          if (*argv[i] != '-')
          {
              cfg_filename = argv[i];
          }
          else if (!strcmp(argv[i], "--device"))
          {
              if (i+1 >= argc)
              {
                  usage(argv[0]);
                  exit(-1);
              }
              device_description = argv[++i];
          }
          else if (!strcmp(argv[i], "--read-eeprom"))
          {
              command = COMMAND_READ;
          }
          else if (!strcmp(argv[i], "--erase-eeprom"))
          {
              command = COMMAND_ERASE;
          }
          else if (!strcmp(argv[i], "--flash-eeprom"))
          {
              command = COMMAND_FLASH;
          }
          else if (!strcmp(argv[i], "--build-eeprom"))
          {
              command = COMMAND_BUILD;
          }
          else
          {
              usage(argv[0]);
              exit(-1);
          }
      }
  
      if (!cfg_filename)
      {
          usage(argv[0]);
          exit(-1);
      }
  
      if ((fp = fopen(cfg_filename, "r")) == NULL)
      {
          printf ("Can't open configuration file\n");
          exit (-1);
      }
      fclose (fp);
  
      cfg = cfg_init(opts, 0);
      cfg_parse(cfg, cfg_filename);
      filename = cfg_getstr(cfg, "filename");
  
      if (cfg_getbool(cfg, "self_powered") && cfg_getint(cfg, "max_power") > 0)
          printf("Hint: Self powered devices should have a max_power setting of 0.\n");
  
      if ((ftdi = ftdi_new()) == 0)
      {
          fprintf(stderr, "Failed to allocate ftdi structure :%s \n",
                  ftdi_get_error_string(ftdi));
          return EXIT_FAILURE;
      }
  
      if (device_description != NULL)
      {
          i = ftdi_usb_open_string(ftdi, device_description);
  
          if (i != 0)
          {
              printf("Unable to find FTDI device with description: %s\n",
                     device_description);
              printf("Error code: %d (%s)\n", i, ftdi_get_error_string(ftdi));
              exit (-1);
          }
      }
      else if (command > 0)
      {
          int vendor_id = cfg_getint(cfg, "vendor_id");
          int product_id = cfg_getint(cfg, "product_id");
  
          i = ftdi_usb_open(ftdi, vendor_id, product_id);
  
          if (i != 0)
          {
              int default_pid = cfg_getint(cfg, "default_pid");
              printf("Unable to find FTDI devices under given vendor/product id: 0x%X/0x%X\n", vendor_id, product_id);
              printf("Error code: %d (%s)\n", i, ftdi_get_error_string(ftdi));
              printf("Retrying with default FTDI pid=%#04x.\n", default_pid);
  
              i = ftdi_usb_open(ftdi, 0x0403, default_pid);
              if (i != 0)
              {
                  printf("Error: %s\n", ftdi->error_str);
                  exit (-1);
              }
          }
      }
      ftdi_eeprom_initdefaults (ftdi, cfg_getstr(cfg, "manufacturer"),
                                cfg_getstr(cfg, "product"),
                                cfg_getstr(cfg, "serial"));
  
      printf("FTDI read eeprom: %d\n", ftdi_read_eeprom(ftdi));
      eeprom_get_value(ftdi, CHIP_SIZE, &my_eeprom_size);
      printf("EEPROM size: %d\n", my_eeprom_size);
  
      if (command == COMMAND_READ)
      {
          ftdi_eeprom_decode(ftdi, 0 /* debug: 1 */);
  
          eeprom_buf = malloc(my_eeprom_size);
          ftdi_get_eeprom_buf(ftdi, eeprom_buf, my_eeprom_size);
  
          if (eeprom_buf == NULL)
          {
              fprintf(stderr, "Malloc failed, aborting\n");
              goto cleanup;
          }
          if (filename != NULL && strlen(filename) > 0)
          {
              FILE *fp = fopen (filename, "wb");
              
              if(fp)
              {
                  fwrite(eeprom_buf, 1, my_eeprom_size, fp);
                  fclose(fp);
              }
              else
                  fprintf(stderr, "Could not open output file %s: %s\n", filename, strerror(errno));
          }
          else
          {
              printf("Warning: Not writing eeprom, you must supply a valid filename\n");
          }
  
          goto cleanup;
      }
  
      eeprom_set_value(ftdi, VENDOR_ID, cfg_getint(cfg, "vendor_id"));
      eeprom_set_value(ftdi, PRODUCT_ID, cfg_getint(cfg, "product_id"));
  
      eeprom_set_value(ftdi, SELF_POWERED, cfg_getbool(cfg, "self_powered"));
      eeprom_set_value(ftdi, REMOTE_WAKEUP, cfg_getbool(cfg, "remote_wakeup"));
      eeprom_set_value(ftdi, MAX_POWER, cfg_getint(cfg, "max_power"));
  
      eeprom_set_value(ftdi, IN_IS_ISOCHRONOUS, cfg_getbool(cfg, "in_is_isochronous"));
      eeprom_set_value(ftdi, OUT_IS_ISOCHRONOUS, cfg_getbool(cfg, "out_is_isochronous"));
      eeprom_set_value(ftdi, SUSPEND_PULL_DOWNS, cfg_getbool(cfg, "suspend_pull_downs"));
  
      eeprom_set_value(ftdi, USE_SERIAL, cfg_getbool(cfg, "use_serial"));
      eeprom_set_value(ftdi, USE_USB_VERSION, cfg_getbool(cfg, "change_usb_version"));
      eeprom_set_value(ftdi, USB_VERSION, cfg_getint(cfg, "usb_version"));
      eeprom_set_value(ftdi, CHIP_TYPE, cfg_getint(cfg, "eeprom_type"));
  
      eeprom_set_value(ftdi, HIGH_CURRENT, cfg_getbool(cfg, "high_current"));
  
      if (ftdi->type == TYPE_R)
      {
          if (cfg_getint(cfg, "cbus0") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_0, cfg_getint(cfg, "cbus0"));
          if (cfg_getint(cfg, "cbus1") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_1, cfg_getint(cfg, "cbus1"));
          if (cfg_getint(cfg, "cbus2") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_2, cfg_getint(cfg, "cbus2"));
          if (cfg_getint(cfg, "cbus3") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_3, cfg_getint(cfg, "cbus3"));
          if (cfg_getint(cfg, "cbus4") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_4, cfg_getint(cfg, "cbus4"));
      }
      else if (ftdi->type == TYPE_232H)
      {
          if (cfg_getint(cfg, "cbush0") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_0, cfg_getint(cfg, "cbush0"));
          if (cfg_getint(cfg, "cbush1") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_1, cfg_getint(cfg, "cbush1"));
          if (cfg_getint(cfg, "cbush2") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_2, cfg_getint(cfg, "cbush2"));
          if (cfg_getint(cfg, "cbush3") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_3, cfg_getint(cfg, "cbush3"));
          if (cfg_getint(cfg, "cbush4") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_4, cfg_getint(cfg, "cbush4"));
          if (cfg_getint(cfg, "cbush5") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_5, cfg_getint(cfg, "cbush5"));
          if (cfg_getint(cfg, "cbush6") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_6, cfg_getint(cfg, "cbush6"));
          if (cfg_getint(cfg, "cbush7") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_7, cfg_getint(cfg, "cbush7"));
          if (cfg_getint(cfg, "cbush8") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_8, cfg_getint(cfg, "cbush8"));
          if (cfg_getint(cfg, "cbush9") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_9, cfg_getint(cfg, "cbush9"));
      }
      else if (ftdi->type == TYPE_230X)
      {
          if (cfg_getint(cfg, "cbusx0") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_0, cfg_getint(cfg, "cbusx0"));
          if (cfg_getint(cfg, "cbusx1") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_1, cfg_getint(cfg, "cbusx1"));
          if (cfg_getint(cfg, "cbusx2") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_2, cfg_getint(cfg, "cbusx2"));
          if (cfg_getint(cfg, "cbusx3") != -1)
              eeprom_set_value(ftdi, CBUS_FUNCTION_3, cfg_getint(cfg, "cbusx3"));
      }
  
      int invert = 0;
      if (cfg_getbool(cfg, "invert_rxd")) invert |= INVERT_RXD;
      if (cfg_getbool(cfg, "invert_txd")) invert |= INVERT_TXD;
      if (cfg_getbool(cfg, "invert_rts")) invert |= INVERT_RTS;
      if (cfg_getbool(cfg, "invert_cts")) invert |= INVERT_CTS;
      if (cfg_getbool(cfg, "invert_dtr")) invert |= INVERT_DTR;
      if (cfg_getbool(cfg, "invert_dsr")) invert |= INVERT_DSR;
      if (cfg_getbool(cfg, "invert_dcd")) invert |= INVERT_DCD;
      if (cfg_getbool(cfg, "invert_ri")) invert |= INVERT_RI;
      eeprom_set_value(ftdi, INVERT, invert);
  
      if (cfg_getint(cfg, "cha_type") != -1)
          eeprom_set_value(ftdi, CHANNEL_A_TYPE, cfg_getint(cfg, "cha_type"));
      if (cfg_getint(cfg, "chb_type") != -1)
          eeprom_set_value(ftdi, CHANNEL_B_TYPE, cfg_getint(cfg, "chb_type"));
  
      eeprom_set_value(ftdi, CHANNEL_A_DRIVER,
                       cfg_getbool(cfg, "cha_vcp") ? DRIVER_VCP : 0);
      eeprom_set_value(ftdi, CHANNEL_B_DRIVER,
                       cfg_getbool(cfg, "chb_vcp") ? DRIVER_VCP : 0);
      eeprom_set_value(ftdi, CHANNEL_C_DRIVER,
                       cfg_getbool(cfg, "chc_vcp") ? DRIVER_VCP : 0);
      eeprom_set_value(ftdi, CHANNEL_D_DRIVER,
                       cfg_getbool(cfg, "chd_vcp") ? DRIVER_VCP : 0);
  
      eeprom_set_value(ftdi, CHANNEL_A_RS485, cfg_getbool(cfg, "cha_rs485"));
      eeprom_set_value(ftdi, CHANNEL_B_RS485, cfg_getbool(cfg, "chb_rs485"));
      eeprom_set_value(ftdi, CHANNEL_C_RS485, cfg_getbool(cfg, "chc_rs485"));
      eeprom_set_value(ftdi, CHANNEL_D_RS485, cfg_getbool(cfg, "chd_rs485"));
  
      /* Arbitrary user data */
      eeprom_set_value(ftdi, USER_DATA_ADDR, cfg_getint(cfg, "user_data_addr"));
      user_data_file = cfg_getstr(cfg, "user_data_file");
      if (user_data_file && strlen(user_data_file) > 0)
      {
          int data_size;
          struct stat st;
  
          printf("User data file: %s\n", user_data_file);
          /* Allocate a buffer for the user data */
          user_data_buffer = (char *)malloc(max_eeprom_size);
          if (user_data_buffer == NULL)
          {
              fprintf(stderr, "Malloc failed, aborting\n");
              goto cleanup;
          }
  
          if (stat(user_data_file, &st))
          {
              printf ("Can't stat user data file %s.\n", user_data_file);
              exit (-1);
          }
          if (st.st_size > max_eeprom_size)
              printf("Warning: %s is too big, only reading %d bytes\n",
                     user_data_file, max_eeprom_size);
          /* Read the user data file, no more than max_eeprom_size bytes */
          FILE *fp = fopen(user_data_file, "rb");
          if (fp == NULL)
          {
              printf ("Can't open user data file %s.\n", user_data_file);
              exit (-1);
          }
          data_size = fread(user_data_buffer, 1, max_eeprom_size, fp);
          fclose(fp);
          if (data_size < 1)
          {
              printf ("Can't read user data file %s.\n", user_data_file);
              exit (-1);
          }
          printf("User data size: %d\n", data_size);
  
          ftdi_set_eeprom_user_data(ftdi, user_data_buffer, data_size);
      }
  
  
      if (command == COMMAND_ERASE)
      {
          printf("FTDI erase eeprom: %d\n", ftdi_erase_eeprom(ftdi));
      }
  
      size_check = ftdi_eeprom_build(ftdi);
      eeprom_get_value(ftdi, CHIP_SIZE, &my_eeprom_size);
  
      if (size_check == -1)
      {
          printf ("Sorry, the eeprom can only contain %d bytes.\n", my_eeprom_size);
          goto cleanup;
      }
      else if (size_check < 0)
      {
          printf ("ftdi_eeprom_build(): error: %d\n", size_check);
          goto cleanup;
      }
      else
      {
          printf ("Used eeprom space: %d bytes\n", my_eeprom_size-size_check);
      }
  
      if (command == COMMAND_FLASH)
      {
          if (cfg_getbool(cfg, "flash_raw"))
          {
              if (filename != NULL && strlen(filename) > 0)
              {
                  eeprom_buf = malloc(max_eeprom_size);
                  FILE *fp = fopen(filename, "rb");
                  if (fp == NULL)
                  {
                      printf ("Can't open eeprom file %s.\n", filename);
                      exit (-1);
                  }
                  my_eeprom_size = fread(eeprom_buf, 1, max_eeprom_size, fp);
                  fclose(fp);
                  if (my_eeprom_size < 128)
                  {
                      printf ("Can't read eeprom file %s.\n", filename);
                      exit (-1);
                  }
  
                  printf("Flashing raw eeprom from file %s (%d bytes)\n",
                         filename, my_eeprom_size);
  
                  ftdi_set_eeprom_buf(ftdi, eeprom_buf, my_eeprom_size);
              } else
              {
                  printf ("ERROR: flash_raw mode enabled, but no eeprom filename "
                          "given in config file.\n");
                  exit (-1);
              }
          }
          printf ("FTDI write eeprom: %d\n", ftdi_write_eeprom(ftdi));
          libusb_reset_device(ftdi->usb_dev);
      }
  
      // Write to file?
      if (filename != NULL && strlen(filename) > 0 && !cfg_getbool(cfg, "flash_raw"))
      {
          fp = fopen(filename, "w");
          if (fp == NULL)
          {
              printf ("Can't write eeprom file.\n");
              exit (-1);
          }
          else
              printf ("Writing to file: %s\n", filename);
  
          if (eeprom_buf == NULL)
              eeprom_buf = malloc(my_eeprom_size);
          ftdi_get_eeprom_buf(ftdi, eeprom_buf, my_eeprom_size);
  
          fwrite(eeprom_buf, my_eeprom_size, 1, fp);
          fclose(fp);
      }
  
  cleanup:
      if (eeprom_buf)
          free(eeprom_buf);
      if (user_data_buffer)
          free(user_data_buffer);
      if (command > 0)
      {
          printf("FTDI close: %d\n", ftdi_usb_close(ftdi));
      }
  
      ftdi_deinit (ftdi);
      ftdi_free (ftdi);
  
      cfg_free(cfg);
  
      printf("\n");
      return 0;
  }
  