FreeCalypso > hg > freecalypso-hwlab

annotate lcdtest/testmain.c @ 176:fb2f6497ba53 default tip

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doc/Linux-DTR-RTS-flaw: point to new location of this article
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Dec 2023 19:37:20 +0000
parents de3d3cfcbb35
children
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1 #include <sys/types.h>
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2 #include <stdio.h>
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3 #include <stdlib.h>
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4 #include <unistd.h>
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5 #include <ftdi.h>
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6 #include "exitcodes.h"
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7
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8 char *device_serial;
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9 struct ftdi_context ftdi;
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10
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11 process_cmdline(argc, argv)
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12 char **argv;
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13 {
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14 int c;
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15 extern int optind;
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16 extern char *optarg;
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18 while ((c = getopt(argc, argv, "d:")) != EOF) {
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19 switch (c) {
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20 case 'd':
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21 device_serial = optarg;
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22 continue;
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23 default:
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24 /* error msg already printed */
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25 exit(ERROR_USAGE);
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26 }
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27 }
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28 switch (argc - optind) {
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29 case 0:
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30 break;
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31 case 1:
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32 if (chdir(argv[optind]) < 0) {
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33 perror(argv[optind]);
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34 exit(ERROR_UNIX);
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35 }
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36 break;
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37 default:
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38 fprintf(stderr, "usage: %s [options] [chdir]\n", argv[0]);
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39 exit(ERROR_USAGE);
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40 }
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41 }
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43 main(argc, argv)
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44 char **argv;
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45 {
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46 char command[512];
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48 process_cmdline(argc, argv);
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49 ftdi_init(&ftdi);
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50 if (ftdi_usb_open_desc(&ftdi, 0x0403, 0x7157, 0, device_serial) < 0) {
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51 fprintf(stderr, "FTDI USB open failed: %s\n", ftdi.error_str);
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52 exit(ERROR_FTDI);
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53 }
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54 if (ftdi_set_bitmode(&ftdi, 0, BITMODE_MCU) < 0) {
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55 fprintf(stderr, "unable to enter MCU mode: %s\n",
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56 ftdi.error_str);
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57 exit(ERROR_FTDI);
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58 }
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59 for (;;) {
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60 if (isatty(0)) {
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61 fputs("lcdtest> ", stdout);
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62 fflush(stdout);
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63 }
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64 if (!fgets(command, sizeof command, stdin))
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65 exit(0);
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66 dispatch_cmd(command);
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67 }
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68 }