FreeCalypso > hg > fc-usbser-tools

annotate fteeprom/fteeprom-prog.c @ 23:7e6dcceb5ee8

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fteeprom-prog: implement -r option for FT232R mode
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 09 Sep 2023 07:05:51 +0000
parents 43b8e88dae02
children 940cde8a99b6
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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 unsigned eeprom_size;
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23 u_short eeprom[256];
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24
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25 read_eeprom_common(inf, filename_for_errs)
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26 FILE *inf;
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27 char *filename_for_errs;
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28 {
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29 char linebuf[1024], *cp;
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30 int lineno, rc;
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31 unsigned ptr = 0, input_off;
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32
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33 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
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34 for (cp = linebuf; isspace(*cp); cp++)
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35 ;
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36 if (*cp == '\0' || *cp == '#')
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37 continue;
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38 if (ptr >= 256) {
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39 fprintf(stderr,
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40 "%s line %d: maximum EEPROM size exceeded\n",
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41 filename_for_errs, lineno);
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42 exit(1);
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43 }
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44 rc = sscanf(linebuf, "%x: %hx %hx %hx %hx %hx %hx %hx %hx",
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45 &input_off, eeprom + ptr, eeprom + ptr + 1,
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46 eeprom + ptr + 2, eeprom + ptr + 3,
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47 eeprom + ptr + 4, eeprom + ptr + 5,
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48 eeprom + ptr + 6, eeprom + ptr + 7);
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49 if (rc != 9 || input_off != ptr * 2) {
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50 fprintf(stderr, "%s line %d: invalid input\n",
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51 filename_for_errs, lineno);
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52 exit(1);
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53 }
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54 ptr += 8;
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55 }
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56 if (ptr != 64 && ptr != 128 && ptr != 256) {
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57 fprintf(stderr, "%s: not an EEPROM image of recognized size\n",
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58 filename_for_errs);
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59 exit(1);
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60 }
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61 eeprom_size = ptr;
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62 }
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63
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64 read_eeprom_from_file(filename)
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65 char *filename;
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66 {
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67 FILE *inf;
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68
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69 inf = fopen(filename, "r");
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70 if (!inf) {
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71 perror(filename);
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72 exit(1);
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73 }
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74 read_eeprom_common(inf, filename);
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75 fclose(inf);
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76 }
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77
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78 read_eeprom_from_stdin()
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79 {
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80 read_eeprom_common(stdin, "stdin");
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81 }
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82
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83 main(argc, argv)
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84 char **argv;
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85 {
23
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86 char **ap, *devsel;
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87 struct usb_device *dev;
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88 usb_dev_handle *usbh;
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89 int ft232r_mode = 0;
0
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90 unsigned n;
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91
23
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92 if (argc < 2) {
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93 usage: fprintf(stderr,
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94 "usage: %s [-r] device-selector [eeprom-image]\n",
0
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95 argv[0]);
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96 exit(1);
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97 }
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98 ap = argv + 1;
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99 if (!strcmp(*ap, "-r")) {
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100 ft232r_mode = 1;
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101 ap++;
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102 }
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103 if (!*ap)
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104 goto usage;
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105 devsel = *ap++;
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106 if (*ap) {
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107 if (ap[1])
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108 goto usage;
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109 read_eeprom_from_file(*ap);
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110 } else
0
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111 read_eeprom_from_stdin();
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112 dev = find_usbdev_by_desc_string(devsel);
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113 if (!dev) {
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114 fprintf(stderr, "error: specified USB device not found\n");
0
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115 exit(1);
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116 }
20
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117 usbh = usbwrap_open_dev(dev, 1);
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118 if (ft232r_mode)
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119 ft232r_eeprom_magic(usbh);
20
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120 for (n = 0; n < eeprom_size; n++)
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121 ftmini_write_eeprom_loc(usbh, n, eeprom[n]);
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122 usbwrap_close_dev(usbh);
0
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123 exit(0);
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124 }