Suga koubou / IM920

Interplan IM920 library, 920MHz module

Dependents:   IM920_sample IM920_SDlog IM920_sample IM920_sample3 ... more

IM920 ライブラリ

データモード、低速、長距離　の設定で通信するライブラリです。

920MHz無線モジュール

http://www.interplan.co.jp/images/contents/solution/im920.png IM920 （インタープラン製）

  • mbedとモジュールとは、シリアル（TX,RX）、BUSY、RESET端子を接続します。
  • モジュールはあらかじめ、コマンドでノード番号などを設定しておきます。

NECの920MHz近距離無線モジュールもおすすめ

IM920_msg.cpp@5:2fd9b1725283, 2015-04-24 (annotated)

Committer:
idealtechlab
Date:
Fri Apr 24 03:59:13 2015 +0000
Revision:
5:2fd9b1725283
Parent:
2:0b47f6b25cc4 
fix buffer over run

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 0:d3ab05ed8142 1 #include "IM920.h"
okini3939 0:d3ab05ed8142 2
okini3939 0:d3ab05ed8142 3 void IM920::recvData (char c) {
okini3939 0:d3ab05ed8142 4 static int sub, len, count;
okini3939 0:d3ab05ed8142 5 static char chr;
okini3939 0:d3ab05ed8142 6
okini3939 0:d3ab05ed8142 7 #ifdef DEBUG_DUMP
okini3939 0:d3ab05ed8142 8 if (c < 0x20 || c >= 0x7f) {
okini3939 0:d3ab05ed8142 9 std::printf("_%02x", c);
okini3939 0:d3ab05ed8142 10 } else {
okini3939 0:d3ab05ed8142 11 std::printf("_%c", c);
okini3939 0:d3ab05ed8142 12 }
okini3939 0:d3ab05ed8142 13 #endif
okini3939 0:d3ab05ed8142 14 switch (_state.mode) {
okini3939 0:d3ab05ed8142 15 case MODE_COMMAND:
okini3939 0:d3ab05ed8142 16 switch (c) {
okini3939 0:d3ab05ed8142 17 case 0:
okini3939 0:d3ab05ed8142 18 case 0x0a: // LF
okini3939 0:d3ab05ed8142 19 case 0x0d: // CR
okini3939 0:d3ab05ed8142 20 _state.buf[len] = 0;
okini3939 0:d3ab05ed8142 21 len = 0;
okini3939 0:d3ab05ed8142 22 parseMessage();
okini3939 0:d3ab05ed8142 23 break;
okini3939 0:d3ab05ed8142 24 case ':':
okini3939 0:d3ab05ed8142 25 if (_state.buf[2] == ',' && _state.buf[7] == ',' && len == 10) {
okini3939 0:d3ab05ed8142 26 sub = 0;
okini3939 0:d3ab05ed8142 27 _state.mode = MODE_DATA_RX;
okini3939 0:d3ab05ed8142 28 break;
okini3939 0:d3ab05ed8142 29 }
okini3939 0:d3ab05ed8142 30 /* FALLTHROUGH */
okini3939 0:d3ab05ed8142 31 default:
okini3939 0:d3ab05ed8142 32 if (len < sizeof(_state.buf) - 1) {
okini3939 0:d3ab05ed8142 33 _state.buf[len] = c;
idealtechlab 5:2fd9b1725283 34 len ++;
okini3939 0:d3ab05ed8142 35 }
okini3939 0:d3ab05ed8142 36 break;
okini3939 0:d3ab05ed8142 37 }
okini3939 0:d3ab05ed8142 38 break;
okini3939 0:d3ab05ed8142 39
okini3939 0:d3ab05ed8142 40 case MODE_DATA_RX:
okini3939 0:d3ab05ed8142 41 if (c == '\r' || c == '\n') {
okini3939 0:d3ab05ed8142 42 DBG("recv %d/%d\r\n", count, len);
okini3939 0:d3ab05ed8142 43 _state.received = true;
okini3939 0:d3ab05ed8142 44 _state.mode = MODE_COMMAND;
okini3939 0:d3ab05ed8142 45 len = 0;
okini3939 0:d3ab05ed8142 46 break;
okini3939 0:d3ab05ed8142 47 }
okini3939 0:d3ab05ed8142 48 switch (sub) {
okini3939 0:d3ab05ed8142 49 case 0:
okini3939 0:d3ab05ed8142 50 chr = x2i(c) << 4;
okini3939 0:d3ab05ed8142 51 sub ++;
okini3939 0:d3ab05ed8142 52 break;
okini3939 0:d3ab05ed8142 53 case 1:
okini3939 0:d3ab05ed8142 54 chr |= x2i(c);
okini3939 0:d3ab05ed8142 55 sub ++;
okini3939 0:d3ab05ed8142 56 if (_state.data!= NULL) {
okini3939 0:d3ab05ed8142 57 _state.data->queue(chr);
idealtechlab 2:0b47f6b25cc4 58 if (_state.data->available() >= CFG_DATA_SIZE) {
okini3939 0:d3ab05ed8142 59 _state.received = true;
okini3939 0:d3ab05ed8142 60 WARN("buf full");
okini3939 0:d3ab05ed8142 61 }
okini3939 0:d3ab05ed8142 62 }
okini3939 0:d3ab05ed8142 63 count ++;
okini3939 0:d3ab05ed8142 64 break;
okini3939 0:d3ab05ed8142 65 case 2:
okini3939 0:d3ab05ed8142 66 if (c == ',') {
okini3939 0:d3ab05ed8142 67 sub = 0;
okini3939 0:d3ab05ed8142 68 }
okini3939 0:d3ab05ed8142 69 break;
okini3939 0:d3ab05ed8142 70 }
okini3939 0:d3ab05ed8142 71 }
okini3939 0:d3ab05ed8142 72 }
okini3939 0:d3ab05ed8142 73
okini3939 0:d3ab05ed8142 74 #define RES_TABLE_NUM 4
okini3939 0:d3ab05ed8142 75 int IM920::parseMessage () {
okini3939 0:d3ab05ed8142 76 int i;
okini3939 0:d3ab05ed8142 77 static const struct RES_TABLE {
okini3939 0:d3ab05ed8142 78 const Response res;
okini3939 0:d3ab05ed8142 79 void (IM920::*func)(const char*);
okini3939 0:d3ab05ed8142 80 } res_table[RES_TABLE_NUM] = {
okini3939 0:d3ab05ed8142 81 {RES_NULL, NULL},
okini3939 0:d3ab05ed8142 82 {RES_RDID, &IM920::resRDID},
okini3939 0:d3ab05ed8142 83 {RES_RDNN, &IM920::resRDNN},
okini3939 0:d3ab05ed8142 84 {RES_RDRS, &IM920::resRDRS},
okini3939 0:d3ab05ed8142 85 };
okini3939 0:d3ab05ed8142 86
okini3939 0:d3ab05ed8142 87 if (_state.res != RES_NULL) {
okini3939 0:d3ab05ed8142 88 for (i = 0; i < RES_TABLE_NUM; i ++) {
okini3939 0:d3ab05ed8142 89 if (res_table[i].res == _state.res) {
okini3939 0:d3ab05ed8142 90 DBG("parse res %d '%s'\r\n", i, _state.buf);
okini3939 0:d3ab05ed8142 91 if (res_table[i].func != NULL) {
okini3939 0:d3ab05ed8142 92 (this->*(res_table[i].func))(_state.buf);
okini3939 0:d3ab05ed8142 93 }
okini3939 0:d3ab05ed8142 94 }
okini3939 0:d3ab05ed8142 95 }
okini3939 0:d3ab05ed8142 96 }
okini3939 0:d3ab05ed8142 97
okini3939 0:d3ab05ed8142 98 if (strncmp(_state.buf, "OK", 2) == 0) {
okini3939 0:d3ab05ed8142 99 _state.ok = true;
okini3939 0:d3ab05ed8142 100 if (_state.status == STAT_SLEEP) {
okini3939 0:d3ab05ed8142 101 _state.status = STAT_NONE;
okini3939 0:d3ab05ed8142 102 }
okini3939 0:d3ab05ed8142 103 return 0;
okini3939 0:d3ab05ed8142 104 } else
okini3939 0:d3ab05ed8142 105 if (strncmp(_state.buf, "NG", 2) == 0) {
okini3939 0:d3ab05ed8142 106 _state.failure = true;
okini3939 0:d3ab05ed8142 107 return 0;
okini3939 0:d3ab05ed8142 108 }
okini3939 0:d3ab05ed8142 109
okini3939 0:d3ab05ed8142 110 return -1;
okini3939 0:d3ab05ed8142 111 }
okini3939 0:d3ab05ed8142 112
okini3939 0:d3ab05ed8142 113 void IM920::resRDID (const char *buf) {
okini3939 0:d3ab05ed8142 114
okini3939 0:d3ab05ed8142 115 if (buf[0] < '0' || buf[0] > 'F') return;
okini3939 0:d3ab05ed8142 116
okini3939 0:d3ab05ed8142 117 _state.id = strtol(buf, NULL, 16);
okini3939 0:d3ab05ed8142 118 _state.res = RES_NULL;
okini3939 0:d3ab05ed8142 119 }
okini3939 0:d3ab05ed8142 120
okini3939 0:d3ab05ed8142 121 void IM920::resRDNN (const char *buf) {
okini3939 0:d3ab05ed8142 122
okini3939 0:d3ab05ed8142 123 if (buf[0] < '0' || buf[0] > 'F') return;
okini3939 0:d3ab05ed8142 124
okini3939 0:d3ab05ed8142 125 _state.node = strtol(buf, NULL, 16);
okini3939 0:d3ab05ed8142 126 _state.res = RES_NULL;
okini3939 0:d3ab05ed8142 127 }
okini3939 0:d3ab05ed8142 128
okini3939 0:d3ab05ed8142 129 void IM920::resRDRS (const char *buf) {
okini3939 0:d3ab05ed8142 130
okini3939 0:d3ab05ed8142 131 if (buf[0] < '0' || buf[0] > 'F') return;
okini3939 0:d3ab05ed8142 132
okini3939 0:d3ab05ed8142 133 _state.rssi = strtol(buf, NULL, 16);
okini3939 0:d3ab05ed8142 134 _state.res = RES_NULL;
okini3939 0:d3ab05ed8142 135 }
okini3939 0:d3ab05ed8142 136