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comparison cp2102/write_eeprom_main.c @ 96:c6d04771bf6a

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cp2102-write-eeprom program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 28 Sep 2023 02:38:59 +0000
parents
children 8d35346f1d46
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equal deleted inserted replaced
95:a378bf95c26c 96:c6d04771bf6a
1 /*
2 * This program reads a CP2102 EEPROM image from an Intel HEX file
3 * and writes it into a physical CP2102 USB device.
4 */
5
6 #include <sys/types.h>
7 #include <string.h>
8 #include <strings.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <unistd.h>
12 #include <usb.h>
13 #include "../libuwrap/find_dev.h"
14 #include "../libuwrap/open_close.h"
15 #include "cp210x_defs.h"
16
17 u_char eeprom[SIZE_EEPROM];
18 char *device_selector, *input_filename;
19 int no_detach;
20
21 process_cmdline(argc, argv)
22 char **argv;
23 {
24 int c;
25 extern int optind;
26 extern char *optarg;
27
28 while ((c = getopt(argc, argv, "n")) != EOF) {
29 switch (c) {
30 case 'n':
31 no_detach = 1;
32 continue;
33 default:
34 /* error msg already printed */
35 exit(1);
36 }
37 }
38 if (argc != optind + 2) {
39 fprintf(stderr,
40 "usage: %s [options] device-selector eeprom-image\n",
41 argv[0]);
42 exit(1);
43 }
44 device_selector = argv[optind];
45 input_filename = argv[optind + 1];
46 }
47
48 main(argc, argv)
49 char **argv;
50 {
51 struct usb_device *dev;
52 usb_dev_handle *usbh;
53
54 process_cmdline(argc, argv);
55 read_intel_hex(input_filename);
56 dev = find_usbdev_by_desc_string(device_selector);
57 if (!dev) {
58 fprintf(stderr, "error: specified USB device not found\n");
59 exit(1);
60 }
61 usbh = usb_open(dev);
62 if (!usbh) {
63 fprintf(stderr, "error: usb_open() failed\n");
64 exit(1);
65 }
66 if (!no_detach)
67 usbwrap_claim_all_ifs(usbh);
68 write_eeprom(usbh);
69 usb_close(usbh);
70 exit(0);
71 }