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annotate fteeprom/test/fteeprom-prog-bad.c @ 122:f18704e91393

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fc-simtool: pb-dump-rec command implemented
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 28 Jan 2021 05:12:10 +0000
parents 86db7b4bfca4
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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77
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1 /*
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2 * This "bad" version of fteeprom-prog is being presented in order to show
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3 * what happens on FT232R chips when a certain magic sequence is omitted.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <ctype.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12 #include <unistd.h>
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13 #include <ftdi.h>
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14
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15 unsigned eeprom_size;
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16 u_short eeprom[256];
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17
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18 read_eeprom_common(inf, filename_for_errs)
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19 FILE *inf;
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20 char *filename_for_errs;
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21 {
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22 char linebuf[1024], *cp;
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23 int lineno, rc;
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24 unsigned ptr = 0, input_off;
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25
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26 for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++) {
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27 for (cp = linebuf; isspace(*cp); cp++)
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28 ;
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29 if (*cp == '\0' || *cp == '#')
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30 continue;
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31 if (ptr >= 256) {
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32 fprintf(stderr,
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33 "%s line %d: maximum EEPROM size exceeded\n",
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34 filename_for_errs, lineno);
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35 exit(1);
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36 }
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37 rc = sscanf(linebuf, "%x: %hx %hx %hx %hx %hx %hx %hx %hx",
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38 &input_off, eeprom + ptr, eeprom + ptr + 1,
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39 eeprom + ptr + 2, eeprom + ptr + 3,
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40 eeprom + ptr + 4, eeprom + ptr + 5,
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41 eeprom + ptr + 6, eeprom + ptr + 7);
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42 if (rc != 9 || input_off != ptr * 2) {
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43 fprintf(stderr, "%s line %d: invalid input\n",
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44 filename_for_errs, lineno);
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45 exit(1);
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46 }
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47 ptr += 8;
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48 }
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49 if (ptr != 64 && ptr != 128 && ptr != 256) {
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50 fprintf(stderr, "%s: not an EEPROM image of recognized size\n",
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51 filename_for_errs);
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52 exit(1);
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53 }
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54 eeprom_size = ptr;
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55 }
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56
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57 read_eeprom_from_file(filename)
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58 char *filename;
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59 {
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60 FILE *inf;
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61
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62 inf = fopen(filename, "r");
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63 if (!inf) {
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64 perror(filename);
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65 exit(1);
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66 }
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67 read_eeprom_common(inf, filename);
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68 fclose(inf);
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69 }
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70
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71 read_eeprom_from_stdin()
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72 {
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73 read_eeprom_common(stdin, "stdin");
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74 }
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75
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76 main(argc, argv)
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77 char **argv;
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78 {
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79 struct ftdi_context ftdi;
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80 u_short modem_status;
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81 unsigned n;
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82
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83 if (argc < 2 || argc > 3) {
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84 fprintf(stderr, "usage: %s device-selector [eeprom-image]\n",
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85 argv[0]);
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86 exit(1);
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87 }
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88 if (argv[2])
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89 read_eeprom_from_file(argv[2]);
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90 else
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91 read_eeprom_from_stdin();
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92 ftdi_init(&ftdi);
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93 if (ftdi_usb_open_string(&ftdi, argv[1]) < 0) {
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94 fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str);
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95 exit(1);
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96 }
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97 #if 0 /* FT232R magic sequence omitted! */
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98 if (ftdi_usb_reset(&ftdi) < 0) {
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99 fprintf(stderr, "ftdi_usb_reset() failed: %s\n",
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100 ftdi.error_str);
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101 exit(1);
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102 }
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103 if (ftdi_poll_modem_status(&ftdi, &modem_status) < 0) {
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104 fprintf(stderr, "ftdi_poll_modem_status() failed: %s\n",
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105 ftdi.error_str);
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106 exit(1);
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107 }
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108 if (ftdi_set_latency_timer(&ftdi, 0x77) < 0) {
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109 fprintf(stderr, "ftdi_set_latency_timer() failed: %s\n",
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110 ftdi.error_str);
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111 exit(1);
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112 }
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113 #endif
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114 for (n = 0; n < eeprom_size; n++) {
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115 if (ftdi_write_eeprom_location(&ftdi, n, eeprom[n]) < 0) {
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116 fprintf(stderr, "EEPROM write error: %s\n",
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117 ftdi.error_str);
86db7b4bfca4 fteeprom-prog-bad: make the "bad" version easily accessible for testing
Mychaela Falconia <falcon@freecalypso.org>
parents:
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118 exit(1);
86db7b4bfca4 fteeprom-prog-bad: make the "bad" version easily accessible for testing
Mychaela Falconia <falcon@freecalypso.org>
parents:
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119 }
86db7b4bfca4 fteeprom-prog-bad: make the "bad" version easily accessible for testing
Mychaela Falconia <falcon@freecalypso.org>
parents:
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120 }
86db7b4bfca4 fteeprom-prog-bad: make the "bad" version easily accessible for testing
Mychaela Falconia <falcon@freecalypso.org>
parents:
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121 ftdi_usb_close(&ftdi);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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122 exit(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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123 }