FreeCalypso > hg > freecalypso-tools

annotate rvinterf/asyncshell/at.c @ 248:cb1ba53a1106

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beginning of factored-out libserial
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 21 Sep 2017 21:43:34 +0000
parents bbc41034f14c
children dd0247097097
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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 u_char rvi_msg[];
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18 extern int rvi_msg_len;
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19 extern int oneshot_nowait;
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20 extern int sock;
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21
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22 send_string_to_ati(str)
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23 char *str;
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24 {
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25 unsigned len;
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26 u_char sendpkt[MAX_PKT_TO_TARGET+1];
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27
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28 len = strlen(str);
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29 if (len + 1 > MAX_PKT_TO_TARGET) {
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30 printf("error: max pkt to target limit exceeded\n");
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31 return(ERROR_USAGE);
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32 }
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33 /* fill out the packet */
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34 sendpkt[0] = RVT_AT_HEADER;
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35 strcpy(sendpkt + 1, str);
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36 /* send it! */
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37 send_pkt_to_target(sendpkt, len + 1);
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38 return(0);
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39 }
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41 void
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42 cmd_sendat(arg)
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43 char *arg;
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44 {
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45 while (isspace(*arg))
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46 arg++;
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47 if (!*arg) {
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48 printf("error: missing string argument\n");
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49 return;
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50 }
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51 ati_rx_control(1);
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52 send_string_to_ati(arg);
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53 }
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54
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55 oneshot_at_command(cmd)
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56 char *cmd;
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57 {
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58 fd_set fds;
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59 int rc;
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60
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61 if (!oneshot_nowait) {
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62 init(); /* to catch the response properly */
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63 ati_rx_control(1);
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64 }
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65 rc = send_string_to_ati(cmd);
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66 if (rc)
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67 exit(rc);
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68 if (oneshot_nowait)
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69 exit(0);
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70 /* wait for response */
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71 for (;;) {
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72 FD_ZERO(&fds);
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73 FD_SET(sock, &fds);
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74 rc = select(sock+1, &fds, 0, 0, 0);
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75 if (rc < 0) {
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76 if (errno == EINTR)
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77 continue;
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78 perror("select");
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79 exit(ERROR_UNIX);
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80 }
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81 if (FD_ISSET(sock, &fds))
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82 handle_rvinterf_input();
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83 }
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84 }
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85
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86 cmd_str_oneshot(argc, argv)
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87 char **argv;
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88 {
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89 return oneshot_at_command(argv[1]);
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90 }
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91
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92 void
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93 oneshot_at_check_response()
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94 {
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95 if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "OK", 2))
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96 exit(0);
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97 if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "> ", 2))
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98 exit(0);
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99 if (rvi_msg_len == 7 && !strncmp(rvi_msg + 2, "ERROR", 5))
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100 exit(ERROR_TARGET);
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101 if (rvi_msg_len == 6 && !strncmp(rvi_msg + 2, "BUSY", 4))
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102 exit(ERROR_TARGET);
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103 if (rvi_msg_len == 12 && !strncmp(rvi_msg + 2, "NO CARRIER", 10))
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104 exit(ERROR_TARGET);
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105 if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CME ERROR", 10))
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106 exit(ERROR_TARGET);
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107 if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CMS ERROR", 10))
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108 exit(ERROR_TARGET);
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109 }