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comparison cp2102/read_baudtab.c @ 60:ae8075bcc029

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cp2102-read-baudtab program written, compiles
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Sep 2023 20:47:52 +0000
parents cp2102/read_eeprom_main.c@d4d3531d342a
children 8d35346f1d46
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59:672c7adc8bc9 60:ae8075bcc029
1 /*
2 * This program locates a CP2102 device via libusb, reads its internal
3 * 1024-byte EEPROM, decodes the baud rate table portion thereof
4 * and prints the decoded table.
5 */
6
7 #include <sys/types.h>
8 #include <string.h>
9 #include <strings.h>
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <unistd.h>
13 #include <usb.h>
14 #include "../libuwrap/find_dev.h"
15 #include "cp210x_defs.h"
16
17 u_char eeprom[SIZE_EEPROM];
18
19 main(argc, argv)
20 char **argv;
21 {
22 struct usb_device *dev;
23 usb_dev_handle *usbh;
24
25 if (argc != 2) {
26 fprintf(stderr, "usage: %s device-selector\n", argv[0]);
27 exit(1);
28 }
29 dev = find_usbdev_by_desc_string(argv[1]);
30 if (!dev) {
31 fprintf(stderr, "error: specified USB device not found\n");
32 exit(1);
33 }
34 usbh = usb_open(dev);
35 if (!usbh) {
36 fprintf(stderr, "error: usb_open() failed\n");
37 exit(1);
38 }
39 read_eeprom(usbh);
40 usb_close(usbh);
41 decode_baud_table(stdout);
42 exit(0);
43 }