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@4:07e752ff8dce, 2015-09-15 (annotated)

Committer:
okini3939
Date:
Tue Sep 15 06:17:57 2015 +0000
Revision:
4:07e752ff8dce
Child:
5:e5a358e9ed94
revamp functions;

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