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annotate rvinterf/old/rvtdump.c @ 249:66a6f1652909

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author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Mon, 27 Jan 2014 08:05:43 +0000
parents f42854da4563
children
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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
133
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16 extern char pr_item[];
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17 extern int sendsock_fd;
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18
134
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19 char *logfname;
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20 FILE *logF;
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21 time_t logtime;
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22 int background, sendsock_enable;
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23
126
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24 main(argc, argv)
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25 char **argv;
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26 {
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27 extern char *optarg;
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28 extern int optind;
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29 int c, maxfd;
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30 fd_set fds;
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31
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32 while ((c = getopt(argc, argv, "bB:d:l:s")) != EOF)
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33 switch (c) {
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34 case 'b':
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35 background++;
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36 continue;
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37 case 'B':
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38 baudrate_name = optarg;
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39 continue;
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40 case 'd':
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41 target_fd = atoi(optarg);
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42 continue;
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43 case 'l':
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44 logfname = optarg;
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45 continue;
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46 case 's':
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47 sendsock_enable++;
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48 continue;
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49 case '?':
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50 default:
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51 usage: fprintf(stderr,
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52 "usage: %s [options] ttyport\n", argv[0]);
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53 exit(1);
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54 }
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55 if (background && !logfname) {
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56 fprintf(stderr, "%s: -b is meaningless without -l\n", argv[0]);
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57 exit(1);
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58 }
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59 if (target_fd <= 0) {
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60 if (argc - optind != 1)
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61 goto usage;
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62 open_target_serial(argv[optind]);
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63 }
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64
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65 set_serial_nonblock(0);
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66 setlinebuf(stdout);
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67 if (logfname) {
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68 logF = fopen(logfname, "w");
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69 if (!logF) {
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70 perror(logfname);
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71 exit(1);
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72 }
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73 fprintf(logF, "*** Log of decoded RVT output ***\n");
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74 setlinebuf(logF);
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75 }
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76 if (sendsock_enable)
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77 create_send_socket();
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78 if (background) {
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79 c = fork();
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80 if (c < 0) {
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81 perror("fork");
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82 exit(1);
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83 }
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84 if (c) {
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85 printf("rvtdump forked into background (pid %d)\n", c);
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86 exit(0);
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87 }
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88 }
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89 maxfd = target_fd;
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90 if (sendsock_fd > maxfd)
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91 maxfd = sendsock_fd;
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92 for (;;) {
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93 FD_ZERO(&fds);
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94 FD_SET(target_fd, &fds);
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95 if (sendsock_enable)
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96 FD_SET(sendsock_fd, &fds);
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97 c = select(maxfd+1, &fds, 0, 0, 0);
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98 time(&logtime);
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99 if (c < 0) {
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100 if (errno == EINTR)
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101 continue;
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102 perror("select");
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103 exit(1);
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104 }
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105 if (FD_ISSET(target_fd, &fds))
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106 process_serial_rx();
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107 if (FD_ISSET(sendsock_fd, &fds))
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108 handle_sendsock();
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109 }
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110 }
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111
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112 handle_rx_packet()
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113 {
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114 print_rx_packet();
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115 }
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116
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117 print_item()
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118 {
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119 if (!background)
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120 printf("%s\n", pr_item);
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121 if (logF)
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122 log_item();
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123 }