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comparison cp2102/find_dev.c @ 97:8d35346f1d46

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cp2102 tools: accept "default" as device-selector
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 28 Sep 2023 03:26:11 +0000
parents
children 1cacc1ae56f0
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96:c6d04771bf6a 97:8d35346f1d46
1 /*
2 * The function implemented in this module is common to all programs in
3 * FC CP2102 tools suite that operate on physical hardware: it asks libuwrap
4 * to locate either the default CP2102 VID:PID or a custom device selector
5 * string.
6 */
7
8 #include <sys/types.h>
9 #include <string.h>
10 #include <strings.h>
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <unistd.h>
14 #include <usb.h>
15 #include "../libuwrap/find_dev.h"
16
17 static const struct usbdev_matchspec default_id = {0x10C4, 0xEA60};
18
19 struct usb_device *
20 find_cp2102_device(devsel_arg)
21 char *devsel_arg;
22 {
23 struct usb_device *dev;
24
25 if (!strcmp(devsel_arg, "default")) {
26 dev = find_usbdev_by_matchspec(&default_id);
27 if (!dev) {
28 fprintf(stderr,
29 "error: no default-ID CP2102 device found\n");
30 exit(1);
31 }
32 } else {
33 dev = find_usbdev_by_desc_string(devsel_arg);
34 if (!dev) {
35 fprintf(stderr,
36 "error: specified USB device not found\n");
37 exit(1);
38 }
39 }
40 return dev;
41 }