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annotate cp2102/write_eeprom_main.c @ 102:4f72e09fb698

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doc/CP2102-EEPROM-tools: complete for now
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 28 Sep 2023 21:13:33 +0000
parents 1cacc1ae56f0
children
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1 /*
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2 * This program reads a CP2102 EEPROM image from an Intel HEX file
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3 * and writes it into a physical CP2102 USB device.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <string.h>
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8 #include <strings.h>
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9 #include <stdio.h>
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10 #include <stdlib.h>
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11 #include <unistd.h>
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12 #include <usb.h>
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13 #include "../libuwrap/find_dev.h"
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14 #include "../libuwrap/open_close.h"
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15 #include "cp210x_defs.h"
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16
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17 extern struct usb_device *find_cp2102_device();
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18
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19 u_char eeprom[SIZE_EEPROM];
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20 char *device_selector, *input_filename;
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21 int no_detach;
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22
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23 process_cmdline(argc, argv)
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24 char **argv;
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25 {
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26 int c;
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27 extern int optind;
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28 extern char *optarg;
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29
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30 while ((c = getopt(argc, argv, "d:n")) != EOF) {
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31 switch (c) {
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32 case 'd':
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33 device_selector = optarg;
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34 continue;
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35 case 'n':
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36 no_detach = 1;
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37 continue;
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38 default:
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39 usage:
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40 fprintf(stderr, "usage: %s [hw-options] eeprom-image\n",
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41 argv[0]);
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42 exit(1);
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43 }
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44 }
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45 if (argc != optind + 1)
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46 goto usage;
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47 input_filename = argv[optind];
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48 }
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49
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50 main(argc, argv)
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51 char **argv;
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52 {
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53 struct usb_device *dev;
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54 usb_dev_handle *usbh;
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55
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56 process_cmdline(argc, argv);
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57 read_intel_hex(input_filename);
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58 dev = find_cp2102_device(device_selector);
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59 usbh = usb_open(dev);
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60 if (!usbh) {
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61 fprintf(stderr, "error: usb_open() failed\n");
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62 exit(1);
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63 }
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64 if (!no_detach)
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65 usbwrap_claim_all_ifs(usbh);
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66 write_eeprom(usbh);
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67 usb_close(usbh);
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68 exit(0);
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69 }