FreeCalypso > hg > freecalypso-tools

annotate rvinterf/asyncshell/at.c @ 430:06442f27b144

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doc/RVTMUX: added note at the beginning about paradigm changes
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 04 Nov 2018 01:55:35 +0000
parents dd0247097097
children e13f60d4f8dd
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1 /*
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2 * Functions for the AT-over-RVTMUX interface
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3 */
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4
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5 #include <sys/types.h>
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6 #include <sys/errno.h>
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7 #include <stdio.h>
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8 #include <ctype.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include <stdlib.h>
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12 #include <unistd.h>
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13 #include "pktmux.h"
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14 #include "limits.h"
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15 #include "exitcodes.h"
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16
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17 extern char *rvinterf_ttyport;
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18 extern u_char rvi_msg[];
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19 extern int rvi_msg_len;
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20 extern int oneshot_nowait;
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21 extern int sock;
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22
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23 send_string_to_ati(str)
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24 char *str;
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25 {
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26 unsigned len;
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27 u_char sendpkt[MAX_PKT_TO_TARGET+1];
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28
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29 len = strlen(str);
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30 if (len + 1 > MAX_PKT_TO_TARGET) {
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31 printf("error: max pkt to target limit exceeded\n");
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32 return(ERROR_USAGE);
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33 }
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34 /* fill out the packet */
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35 sendpkt[0] = RVT_AT_HEADER;
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36 strcpy(sendpkt + 1, str);
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37 /* send it! */
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38 send_pkt_to_target(sendpkt, len + 1);
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39 return(0);
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40 }
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41
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42 void
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43 cmd_sendat(arg)
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44 char *arg;
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45 {
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46 while (isspace(*arg))
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47 arg++;
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48 if (!*arg) {
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49 printf("error: missing string argument\n");
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50 return;
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51 }
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52 ati_rx_control(1);
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53 send_string_to_ati(arg);
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54 }
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55
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56 oneshot_at_command(cmd)
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57 char *cmd;
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58 {
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59 fd_set fds;
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60 int rc;
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61
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62 if (!oneshot_nowait) {
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63 if (rvinterf_ttyport)
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64 usleep(30000);
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65 init(); /* to catch the response properly */
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66 ati_rx_control(1);
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67 }
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68 rc = send_string_to_ati(cmd);
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69 if (rc)
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70 exit(rc);
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71 if (oneshot_nowait)
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72 exit(0);
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73 /* wait for response */
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74 for (;;) {
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75 FD_ZERO(&fds);
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76 FD_SET(sock, &fds);
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77 rc = select(sock+1, &fds, 0, 0, 0);
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78 if (rc < 0) {
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79 if (errno == EINTR)
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80 continue;
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81 perror("select");
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82 exit(ERROR_UNIX);
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83 }
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84 if (FD_ISSET(sock, &fds))
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85 handle_rvinterf_input();
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86 }
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87 }
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88
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89 cmd_str_oneshot(argc, argv)
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90 char **argv;
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91 {
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92 return oneshot_at_command(argv[1]);
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93 }
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94
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95 void
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96 oneshot_at_check_response()
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97 {
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98 if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "OK", 2))
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99 exit(0);
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100 if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "> ", 2))
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101 exit(0);
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102 if (rvi_msg_len == 7 && !strncmp(rvi_msg + 2, "ERROR", 5))
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103 exit(ERROR_TARGET);
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104 if (rvi_msg_len == 6 && !strncmp(rvi_msg + 2, "BUSY", 4))
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105 exit(ERROR_TARGET);
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106 if (rvi_msg_len == 12 && !strncmp(rvi_msg + 2, "NO CARRIER", 10))
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107 exit(ERROR_TARGET);
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108 if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CME ERROR", 10))
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109 exit(ERROR_TARGET);
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110 if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CMS ERROR", 10))
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111 exit(ERROR_TARGET);
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112 }