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annotate fteeprom/fteeprom-read.c @ 31:16b625911e19

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fteeprom: generalization of previous ee2232 tools
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 21 Apr 2019 04:14:00 +0000
parents
children c4b9026c8875
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31
16b625911e19 fteeprom: generalization of previous ee2232 tools
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1 #include <sys/types.h>
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2 #include <string.h>
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3 #include <strings.h>
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <unistd.h>
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7 #include <ftdi.h>
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8
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9 char *device_selector;
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10 unsigned eeprom_size = 64;
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11
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12 process_cmdline(argc, argv)
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13 char **argv;
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14 {
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15 int c;
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16 extern int optind;
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17 extern char *optarg;
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18
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19 while ((c = getopt(argc, argv, "t:")) != EOF) {
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20 switch (c) {
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21 case 't':
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22 if (!strcmp(optarg, "46"))
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23 eeprom_size = 64;
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24 else if (!strcmp(optarg, "56"))
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25 eeprom_size = 128;
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26 else if (!strcmp(optarg, "66"))
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27 eeprom_size = 256;
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28 else {
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29 fprintf(stderr,
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30 "error: -t option invalid value \"%s\"\n",
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31 optarg);
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32 exit(1);
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33 }
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34 continue;
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35 default:
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36 /* error msg already printed */
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37 exit(1);
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38 }
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39 }
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40 if (argc != optind + 1) {
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41 fprintf(stderr, "usage: %s [options] device-selector\n",
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42 argv[0]);
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43 exit(1);
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44 }
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45 device_selector = argv[optind];
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46 }
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47
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48 main(argc, argv)
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49 char **argv;
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50 {
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51 struct ftdi_context ftdi;
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52 u_short word;
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53 unsigned n, col;
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54
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55 process_cmdline(argc, argv);
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56 ftdi_init(&ftdi);
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57 if (ftdi_usb_open_string(&ftdi, device_selector) < 0) {
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58 fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str);
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59 exit(1);
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60 }
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61 for (n = 0; n < eeprom_size; n++) {
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62 if (ftdi_read_eeprom_location(&ftdi, n, &word) < 0) {
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63 fprintf(stderr, "EEPROM read error: %s\n",
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64 ftdi.error_str);
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65 exit(1);
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66 }
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67 col = n & 7;
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68 if (col == 0)
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69 printf("%02X:", n * 2);
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70 printf(" %04X", word);
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71 if (col == 7)
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72 putchar('\n');
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73 }
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74 ftdi_usb_close(&ftdi);
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75 exit(0);
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76 }