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annotate rvinterf/rvtdump.c @ 170:4b53bd08f345

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gsm-fw/riviera/rvt/rvt_task.c: formatting (readability) cleanup
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Wed, 20 Nov 2013 04:05:18 +0000
parents e01e3a60c858
children 4d8e4c58df71
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1 /*
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2 * This program reads bytes from a serial port, parses them assuming
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3 * TI's RVT MUX format, and prints every decoded packet.
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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 <sys/errno.h>
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8 #include <stdio.h>
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9 #include <stdlib.h>
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10 #include <unistd.h>
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11 #include <time.h>
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12
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13 extern int target_fd;
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14 extern char *baudrate_name;
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15
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16 extern char pr_item[];
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17
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18 char *logfname;
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19 FILE *logF;
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20 time_t logtime;
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21 int background;
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22
126
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23 main(argc, argv)
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24 char **argv;
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25 {
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26 extern char *optarg;
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27 extern int optind;
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28 int c;
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29 fd_set fds;
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30
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31 while ((c = getopt(argc, argv, "bB:d:l:")) != EOF)
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32 switch (c) {
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33 case 'b':
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34 background++;
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35 continue;
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36 case 'B':
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37 baudrate_name = optarg;
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38 continue;
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39 case 'd':
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40 target_fd = atoi(optarg);
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41 continue;
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42 case 'l':
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43 logfname = optarg;
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44 continue;
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45 case '?':
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46 default:
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47 usage: fprintf(stderr,
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48 "usage: %s [options] ttyport\n", argv[0]);
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49 exit(1);
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50 }
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51 if (background && !logfname) {
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52 fprintf(stderr, "%s: -b is meaningless without -l\n", argv[0]);
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53 exit(1);
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54 }
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55 if (target_fd <= 0) {
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56 if (argc - optind != 1)
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57 goto usage;
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58 open_target_serial(argv[optind]);
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59 }
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60
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61 set_serial_nonblock(0);
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62 setlinebuf(stdout);
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63 if (logfname) {
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64 logF = fopen(logfname, "w");
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65 if (!logF) {
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66 perror(logfname);
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67 exit(1);
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68 }
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69 fprintf(logF, "*** Log of decoded RVT output ***\n");
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70 setlinebuf(logF);
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71 }
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72 if (background) {
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73 c = fork();
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74 if (c < 0) {
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75 perror("fork");
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76 exit(1);
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77 }
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78 if (c) {
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79 printf("rvtdump forked into background (pid %d)\n", c);
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80 exit(0);
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81 }
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82 }
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83 for (;;) {
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84 FD_ZERO(&fds);
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85 FD_SET(target_fd, &fds);
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86 c = select(target_fd+1, &fds, 0, 0, 0);
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87 time(&logtime);
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88 if (c < 0) {
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89 if (errno == EINTR)
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90 continue;
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91 perror("select");
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92 exit(1);
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93 }
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94 if (FD_ISSET(target_fd, &fds))
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95 process_serial_rx();
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96 }
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97 }
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98
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99 handle_rx_packet()
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100 {
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101 print_rx_packet();
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102 }
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103
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104 print_item()
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105 {
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106 if (!background)
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107 printf("%s\n", pr_item);
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108 if (logF)
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109 log_item();
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110 }