Suga koubou / NECnfc

NEC Near Field Communication RF module library for mbed H001-000003-001 (950MHz), H001-000013-001 (920MHz), TY24FM-E2024 (2.4GHz)

Dependents:   NECnfc_sample Drone_air Drone_ground

NEC Near Field Communication RF module library

NEC製の近距離無線モジュール用のライブラリです。

詳細はこちら

NECnfc_msg.cpp@7:9c963cb53ef7, 2016-04-07 (annotated)

Committer:
okini3939
Date:
Thu Apr 07 00:56:50 2016 +0000
Revision:
7:9c963cb53ef7
Parent:
6:2e1fc47e5bca 
bug fix;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okini3939 4:07e752ff8dce 1 #include "NECnfc.h"
okini3939 4:07e752ff8dce 2
okini3939 4:07e752ff8dce 3 void NECnfc::recvData (char c) {
okini3939 4:07e752ff8dce 4
okini3939 4:07e752ff8dce 5 #ifdef DEBUG_DUMP
okini3939 4:07e752ff8dce 6 if (c < 0x20 || c >= 0x7f) {
okini3939 4:07e752ff8dce 7 printf("%02x", c);
okini3939 4:07e752ff8dce 8 } else {
okini3939 4:07e752ff8dce 9 printf("_%c", c);
okini3939 4:07e752ff8dce 10 }
okini3939 4:07e752ff8dce 11 #endif
okini3939 4:07e752ff8dce 12 switch (_mode) {
okini3939 4:07e752ff8dce 13 case MODE_READY:
okini3939 6:2e1fc47e5bca 14 switch (_rxcount) {
okini3939 4:07e752ff8dce 15 case 0:
okini3939 5:e5a358e9ed94 16 if (c == 0x0f) {
okini3939 6:2e1fc47e5bca 17 _rxbuf[_rxcount] = c;
okini3939 6:2e1fc47e5bca 18 _rxcount ++;
okini3939 5:e5a358e9ed94 19 _received = 0;
okini3939 5:e5a358e9ed94 20 }
okini3939 4:07e752ff8dce 21 break;
okini3939 4:07e752ff8dce 22 case 1:
okini3939 4:07e752ff8dce 23 if (c == 0x5a) {
okini3939 6:2e1fc47e5bca 24 _rxbuf[_rxcount] = c;
okini3939 6:2e1fc47e5bca 25 _rxcount ++;
okini3939 4:07e752ff8dce 26 } else {
okini3939 6:2e1fc47e5bca 27 _rxcount = 0;
okini3939 4:07e752ff8dce 28 }
okini3939 4:07e752ff8dce 29 break;
okini3939 4:07e752ff8dce 30 case 2:
okini3939 6:2e1fc47e5bca 31 _rxbuf[_rxcount] = c;
okini3939 6:2e1fc47e5bca 32 _rxcount ++;
okini3939 6:2e1fc47e5bca 33 _rxlen = (int)((unsigned char)c);
okini3939 4:07e752ff8dce 34 _mode = MODE_DATA;
okini3939 4:07e752ff8dce 35 break;
okini3939 4:07e752ff8dce 36 }
okini3939 4:07e752ff8dce 37 break;
okini3939 4:07e752ff8dce 38 case MODE_DATA:
okini3939 6:2e1fc47e5bca 39 _rxbuf[_rxcount] = c;
okini3939 6:2e1fc47e5bca 40 _rxcount ++;
okini3939 6:2e1fc47e5bca 41 if (_rxcount >= _rxlen) {
okini3939 6:2e1fc47e5bca 42 _rxcount = 0;
okini3939 4:07e752ff8dce 43 _mode = MODE_READY;
okini3939 4:07e752ff8dce 44 parseMessage();
okini3939 4:07e752ff8dce 45 }
okini3939 4:07e752ff8dce 46 }
okini3939 4:07e752ff8dce 47 }
okini3939 4:07e752ff8dce 48
okini3939 4:07e752ff8dce 49 void NECnfc::parseMessage () {
okini3939 4:07e752ff8dce 50 DBG("parseMessage %02x\r\n", _rxmsg.msgid);
okini3939 4:07e752ff8dce 51
okini3939 4:07e752ff8dce 52 _received = 0;
okini3939 4:07e752ff8dce 53 if (_rxmsg.msgno != _msgno && _rxmsg.msgid != NECMSG_SEND_DAT && _rxmsg.msgid != NECMSG_SEND_NOACK) {
okini3939 4:07e752ff8dce 54 DBG("error msgno %d %d\r\n", _rxmsg.msgno, _msgno);
okini3939 4:07e752ff8dce 55 return;
okini3939 4:07e752ff8dce 56 }
okini3939 4:07e752ff8dce 57
okini3939 4:07e752ff8dce 58 switch (_rxmsg.msgid) {
okini3939 4:07e752ff8dce 59 case NECMSG_ACK:
okini3939 4:07e752ff8dce 60 _ack = 1;
okini3939 4:07e752ff8dce 61 break;
okini3939 4:07e752ff8dce 62 case NECMSG_NOACK:
okini3939 4:07e752ff8dce 63 _noack = 1;
okini3939 4:07e752ff8dce 64 break;
okini3939 4:07e752ff8dce 65 case NECMSG_RESEND:
okini3939 4:07e752ff8dce 66 _resend = 1;
okini3939 4:07e752ff8dce 67 DBG("error resend %d %d\r\n", _rxmsg.parameter[0], _rxmsg.parameter[1]);
okini3939 4:07e752ff8dce 68 break;
okini3939 4:07e752ff8dce 69 case NECMSG_SEARCH:
okini3939 4:07e752ff8dce 70 break;
okini3939 4:07e752ff8dce 71 case NECMSG_SEND_DAT:
okini3939 4:07e752ff8dce 72 case NECMSG_SEND_NOACK:
okini3939 4:07e752ff8dce 73 _received = 1;
okini3939 4:07e752ff8dce 74 break;
okini3939 4:07e752ff8dce 75 }
okini3939 4:07e752ff8dce 76 return;
okini3939 4:07e752ff8dce 77 }
okini3939 4:07e752ff8dce 78
okini3939 4:07e752ff8dce 79 int NECnfc::send (NECMSG msgid, unsigned int dest, const char *param, int len) {
okini3939 4:07e752ff8dce 80 int i;
okini3939 4:07e752ff8dce 81 struct ifMessage ifmsg;
okini3939 4:07e752ff8dce 82 unsigned char *buf = (unsigned char *)&ifmsg;
okini3939 4:07e752ff8dce 83 Timer t;
okini3939 4:07e752ff8dce 84
okini3939 6:2e1fc47e5bca 85 if (_mode != MODE_READY) {
okini3939 6:2e1fc47e5bca 86 t.start();
okini3939 6:2e1fc47e5bca 87 while (_mode != MODE_READY) {
okini3939 6:2e1fc47e5bca 88 poll();
okini3939 6:2e1fc47e5bca 89 if (t.read() > NEC_TIMEOUT) {
okini3939 6:2e1fc47e5bca 90 DBG("timeout\r\n");
okini3939 6:2e1fc47e5bca 91 t.stop();
okini3939 6:2e1fc47e5bca 92 return -1;
okini3939 6:2e1fc47e5bca 93 }
okini3939 6:2e1fc47e5bca 94 }
okini3939 7:9c963cb53ef7 95 t.stop();
okini3939 6:2e1fc47e5bca 96 t.reset();
okini3939 6:2e1fc47e5bca 97 }
okini3939 6:2e1fc47e5bca 98
okini3939 4:07e752ff8dce 99 if (len > NEC_MAXLENGTH) len = NEC_MAXLENGTH;
okini3939 4:07e752ff8dce 100 _msgno = (_msgno + 1) & 0xff;
okini3939 4:07e752ff8dce 101 ifmsg.start = htons(0x0f5a);
okini3939 4:07e752ff8dce 102 ifmsg.length = NEC_HEADER_SIZE + len;
okini3939 4:07e752ff8dce 103 ifmsg.msgid = msgid;
okini3939 4:07e752ff8dce 104 ifmsg.msgno = _msgno;
okini3939 4:07e752ff8dce 105 ifmsg.dstid = htonl(dest);
okini3939 4:07e752ff8dce 106 ifmsg.srcid = htonl(_id);
okini3939 4:07e752ff8dce 107 memcpy(ifmsg.parameter, param, len);
okini3939 4:07e752ff8dce 108
okini3939 4:07e752ff8dce 109 _ack = 0;
okini3939 4:07e752ff8dce 110 _noack = 0;
okini3939 4:07e752ff8dce 111 _resend = 0;
okini3939 4:07e752ff8dce 112 for (i = 0; i < ifmsg.length; i ++) {
okini3939 4:07e752ff8dce 113 _nec.putc(buf[i]);
okini3939 4:07e752ff8dce 114 }
okini3939 4:07e752ff8dce 115
okini3939 4:07e752ff8dce 116 t.start();
okini3939 4:07e752ff8dce 117 for (;;) {
okini3939 4:07e752ff8dce 118 if (_ack || _noack || _resend) break;
okini3939 4:07e752ff8dce 119 if (t.read() > NEC_TIMEOUT) {
okini3939 4:07e752ff8dce 120 DBG("timeout\r\n");
okini3939 4:07e752ff8dce 121 t.stop();
okini3939 4:07e752ff8dce 122 return -1;
okini3939 4:07e752ff8dce 123 }
okini3939 4:07e752ff8dce 124 }
okini3939 4:07e752ff8dce 125 t.stop();
okini3939 4:07e752ff8dce 126 DBG(" ack %d, noack %d, resend %d\r\n", _ack, _noack, _resend);
okini3939 4:07e752ff8dce 127 return _ack ? 0 : -1;
okini3939 4:07e752ff8dce 128 }