FreeCalypso > hg > fc-usbser-tools

annotate fteeprom/fteeprom-prog.c @ 91:f4a7ac90cf39

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cp2102-decode-ee-desc: decode textual ID strings
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 27 Sep 2023 20:46:30 +0000
parents 5cbde3c80c24
children
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1 /*
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2 * This program connects to an FTDI chip via libusb and programs its EEPROM
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3 * with a raw hex image read from stdin or from a backup file.
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4 *
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5 * The present version has been converted to use our local libraries
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6 * (libftmini and libuwrap) instead of libftdi - thus the external dependency
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7 * is only libusb.
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8 */
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9
0
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10 #include <sys/types.h>
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11 #include <ctype.h>
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12 #include <string.h>
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13 #include <strings.h>
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14 #include <stdio.h>
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15 #include <stdlib.h>
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16 #include <unistd.h>
20
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17 #include <usb.h>
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18 #include "../libuwrap/find_dev.h"
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19 #include "../libuwrap/open_close.h"
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20 #include "../libftmini/eeprom_func.h"
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21
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22 extern unsigned eeprom_size;
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23 extern u_short eeprom[256];
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24
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25 char *device_selector, *input_filename;
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26 int ft232r_mode, no_detach;
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27
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28 process_cmdline(argc, argv)
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29 char **argv;
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30 {
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31 int c;
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32 extern int optind;
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33 extern char *optarg;
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34
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35 while ((c = getopt(argc, argv, "nr")) != EOF) {
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36 switch (c) {
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37 case 'n':
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38 no_detach = 1;
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39 continue;
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40 case 'r':
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41 ft232r_mode = 1;
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42 continue;
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43 default:
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44 /* error msg already printed */
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45 exit(1);
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46 }
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47 }
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48 if (argc < optind + 1 || argc > optind + 2) {
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49 fprintf(stderr,
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50 "usage: %s [options] device-selector [eeprom-image]\n",
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51 argv[0]);
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52 exit(1);
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53 }
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54 device_selector = argv[optind];
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55 input_filename = argv[optind + 1];
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56 }
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57
0
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58 main(argc, argv)
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59 char **argv;
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60 {
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61 struct usb_device *dev;
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62 usb_dev_handle *usbh;
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63 unsigned n;
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64
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65 process_cmdline(argc, argv);
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66 if (input_filename)
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67 read_eeprom_from_file(input_filename);
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68 else
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69 read_eeprom_from_stdin();
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70 dev = find_usbdev_by_desc_string(device_selector);
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71 if (!dev) {
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72 fprintf(stderr, "error: specified USB device not found\n");
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73 exit(1);
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74 }
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75 usbh = usb_open(dev);
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76 if (!usbh) {
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77 fprintf(stderr, "error: usb_open() failed\n");
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78 exit(1);
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79 }
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80 if (!no_detach)
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81 usbwrap_claim_all_ifs(usbh);
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82 if (ft232r_mode)
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83 ft232r_eeprom_magic(usbh);
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84 for (n = 0; n < eeprom_size; n++)
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85 ftmini_write_eeprom_loc(usbh, n, eeprom[n]);
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86 usb_close(usbh);
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87 exit(0);
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88 }