FreeCalypso > hg > fc-usbser-tools

annotate fteeprom/fteeprom-prog.c @ 48:9cfe3223fbf8

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doc/FTDI-EEPROM-tools: document -d options
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Sep 2023 03:58:41 +0000
parents a94bd4002076
children ca2250b4833d
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20
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1 /*
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2 * This program connects to an FTDI chip via libusb and programs its EEPROM
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3 * with a raw hex image read from stdin or from a backup file.
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4 *
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5 * The present version has been converted to use our local libraries
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6 * (libftmini and libuwrap) instead of libftdi - thus the external dependency
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7 * is only libusb.
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8 */
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9
0
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10 #include <sys/types.h>
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11 #include <ctype.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include <stdio.h>
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15 #include <stdlib.h>
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16 #include <unistd.h>
20
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17 #include <usb.h>
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18 #include "../libuwrap/find_dev.h"
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19 #include "../libuwrap/open_close.h"
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20 #include "../libftmini/eeprom_func.h"
0
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21
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22 char *device_selector, *input_filename;
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23 int detach_num, ft232r_mode;
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24 unsigned eeprom_size;
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25 u_short eeprom[256];
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26
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27 process_cmdline(argc, argv)
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28 char **argv;
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29 {
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30 int c;
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31 extern int optind;
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32 extern char *optarg;
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33
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34 while ((c = getopt(argc, argv, "d:r")) != EOF) {
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35 switch (c) {
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36 case 'd':
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37 detach_num = atoi(optarg);
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38 switch (detach_num) {
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39 case 0:
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40 case 1:
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41 case 2:
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42 case 4:
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43 break;
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44 default:
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45 fprintf(stderr, "error: invalid -d argument\n");
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46 exit(1);
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47 }
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48 continue;
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49 case 'r':
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50 ft232r_mode = 1;
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51 detach_num = 1;
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52 continue;
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53 default:
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54 /* error msg already printed */
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55 exit(1);
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56 }
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57 }
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58 if (argc < optind + 1 || argc > optind + 2) {
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59 fprintf(stderr,
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60 "usage: %s [options] device-selector [eeprom-image]\n",
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61 argv[0]);
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62 exit(1);
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63 }
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64 device_selector = argv[optind];
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65 input_filename = argv[optind + 1];
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66 }
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67
0
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68 read_eeprom_common(inf, filename_for_errs)
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69 FILE *inf;
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70 char *filename_for_errs;
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71 {
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72 char linebuf[1024], *cp;
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73 int lineno, rc;
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74 unsigned ptr = 0, input_off;
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75
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76 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
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77 for (cp = linebuf; isspace(*cp); cp++)
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78 ;
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79 if (*cp == '\0' || *cp == '#')
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80 continue;
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81 if (ptr >= 256) {
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82 fprintf(stderr,
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83 "%s line %d: maximum EEPROM size exceeded\n",
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84 filename_for_errs, lineno);
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85 exit(1);
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86 }
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87 rc = sscanf(linebuf, "%x: %hx %hx %hx %hx %hx %hx %hx %hx",
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88 &input_off, eeprom + ptr, eeprom + ptr + 1,
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89 eeprom + ptr + 2, eeprom + ptr + 3,
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90 eeprom + ptr + 4, eeprom + ptr + 5,
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91 eeprom + ptr + 6, eeprom + ptr + 7);
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92 if (rc != 9 || input_off != ptr * 2) {
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93 fprintf(stderr, "%s line %d: invalid input\n",
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94 filename_for_errs, lineno);
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95 exit(1);
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96 }
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97 ptr += 8;
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98 }
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99 if (ptr != 64 && ptr != 128 && ptr != 256) {
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100 fprintf(stderr, "%s: not an EEPROM image of recognized size\n",
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101 filename_for_errs);
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102 exit(1);
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103 }
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104 eeprom_size = ptr;
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105 }
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106
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107 read_eeprom_from_file(filename)
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108 char *filename;
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109 {
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110 FILE *inf;
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111
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112 inf = fopen(filename, "r");
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113 if (!inf) {
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114 perror(filename);
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115 exit(1);
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116 }
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117 read_eeprom_common(inf, filename);
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118 fclose(inf);
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119 }
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120
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121 read_eeprom_from_stdin()
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122 {
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123 read_eeprom_common(stdin, "stdin");
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124 }
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125
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126 main(argc, argv)
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127 char **argv;
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128 {
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129 struct usb_device *dev;
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130 usb_dev_handle *usbh;
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131 unsigned n;
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132
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133 process_cmdline(argc, argv);
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134 if (input_filename)
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135 read_eeprom_from_file(input_filename);
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136 else
0
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137 read_eeprom_from_stdin();
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138 dev = find_usbdev_by_desc_string(device_selector);
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139 if (!dev) {
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140 fprintf(stderr, "error: specified USB device not found\n");
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141 exit(1);
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142 }
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143 usbh = usb_open(dev);
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144 if (!usbh) {
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145 fprintf(stderr, "error: usb_open() failed\n");
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146 exit(1);
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147 }
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148 if (detach_num)
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149 usbwrap_claim_all_ifs(usbh, detach_num);
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150 if (ft232r_mode)
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151 ft232r_eeprom_magic(usbh);
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152 for (n = 0; n < eeprom_size; n++)
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153 ftmini_write_eeprom_loc(usbh, n, eeprom[n]);
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154 usb_close(usbh);
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155 exit(0);
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156 }