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comparison fteeprom/fteeprom-read.c @ 0:11b8a30333b3

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fteeprom: initial import from freecalypso-hwlab
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 03 Sep 2023 18:08:22 +0000
parents
children 1d76deae1e74
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-1:000000000000 0:11b8a30333b3
1 #include <sys/types.h>
2 #include <string.h>
3 #include <strings.h>
4 #include <stdio.h>
5 #include <stdlib.h>
6 #include <unistd.h>
7 #include <ftdi.h>
8
9 char *device_selector;
10 unsigned eeprom_size = 64;
11
12 process_cmdline(argc, argv)
13 char **argv;
14 {
15 int c;
16 extern int optind;
17
18 while ((c = getopt(argc, argv, "bB")) != EOF) {
19 switch (c) {
20 case 'b':
21 eeprom_size = 128;
22 continue;
23 case 'B':
24 eeprom_size = 256;
25 continue;
26 default:
27 /* error msg already printed */
28 exit(1);
29 }
30 }
31 if (argc != optind + 1) {
32 fprintf(stderr, "usage: %s [options] device-selector\n",
33 argv[0]);
34 exit(1);
35 }
36 device_selector = argv[optind];
37 }
38
39 main(argc, argv)
40 char **argv;
41 {
42 struct ftdi_context ftdi;
43 u_short word;
44 unsigned n, col;
45
46 process_cmdline(argc, argv);
47 ftdi_init(&ftdi);
48 if (ftdi_usb_open_string(&ftdi, device_selector) < 0) {
49 fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str);
50 exit(1);
51 }
52 for (n = 0; n < eeprom_size; n++) {
53 if (ftdi_read_eeprom_location(&ftdi, n, &word) < 0) {
54 fprintf(stderr, "EEPROM read error: %s\n",
55 ftdi.error_str);
56 exit(1);
57 }
58 col = n & 7;
59 if (col == 0)
60 printf("%02X:", n * 2);
61 printf(" %04X", word);
62 if (col == 7)
63 putchar('\n');
64 }
65 ftdi_usb_close(&ftdi);
66 exit(0);
67 }