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