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@5:e5a358e9ed94, 2015-10-19 (annotated)

Committer:
okini3939
Date:
Mon Oct 19 01:36:35 2015 +0000
Revision:
5:e5a358e9ed94
Parent:
4:07e752ff8dce
Child:
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 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 switch (count) {
okini3939 4:07e752ff8dce 16 case 0:
okini3939 5:e5a358e9ed94 17 if (c == 0x0f) {
okini3939 5:e5a358e9ed94 18 _rxbuf[count] = c;
okini3939 5:e5a358e9ed94 19 count ++;
okini3939 5:e5a358e9ed94 20 _received = 0;
okini3939 5:e5a358e9ed94 21 }
okini3939 4:07e752ff8dce 22 break;
okini3939 4:07e752ff8dce 23 case 1:
okini3939 4:07e752ff8dce 24 if (c == 0x5a) {
okini3939 5:e5a358e9ed94 25 _rxbuf[count] = c;
okini3939 4:07e752ff8dce 26 count ++;
okini3939 4:07e752ff8dce 27 } else {
okini3939 4:07e752ff8dce 28 count = 0;
okini3939 4:07e752ff8dce 29 }
okini3939 4:07e752ff8dce 30 break;
okini3939 4:07e752ff8dce 31 case 2:
okini3939 5:e5a358e9ed94 32 _rxbuf[count] = c;
okini3939 4:07e752ff8dce 33 count ++;
okini3939 4:07e752ff8dce 34 len = (int)((unsigned char)c);
okini3939 4:07e752ff8dce 35 _mode = MODE_DATA;
okini3939 4:07e752ff8dce 36 break;
okini3939 4:07e752ff8dce 37 }
okini3939 4:07e752ff8dce 38 break;
okini3939 4:07e752ff8dce 39 case MODE_DATA:
okini3939 4:07e752ff8dce 40 _rxbuf[count] = c;
okini3939 4:07e752ff8dce 41 count ++;
okini3939 4:07e752ff8dce 42 if (count >= len) {
okini3939 4:07e752ff8dce 43 count = 0;
okini3939 4:07e752ff8dce 44 _mode = MODE_READY;
okini3939 4:07e752ff8dce 45 parseMessage();
okini3939 4:07e752ff8dce 46 }
okini3939 4:07e752ff8dce 47 }
okini3939 4:07e752ff8dce 48 }
okini3939 4:07e752ff8dce 49
okini3939 4:07e752ff8dce 50 void NECnfc::parseMessage () {
okini3939 4:07e752ff8dce 51 DBG("parseMessage %02x\r\n", _rxmsg.msgid);
okini3939 4:07e752ff8dce 52
okini3939 4:07e752ff8dce 53 _received = 0;
okini3939 4:07e752ff8dce 54 if (_rxmsg.msgno != _msgno && _rxmsg.msgid != NECMSG_SEND_DAT && _rxmsg.msgid != NECMSG_SEND_NOACK) {
okini3939 4:07e752ff8dce 55 DBG("error msgno %d %d\r\n", _rxmsg.msgno, _msgno);
okini3939 4:07e752ff8dce 56 return;
okini3939 4:07e752ff8dce 57 }
okini3939 4:07e752ff8dce 58
okini3939 4:07e752ff8dce 59 switch (_rxmsg.msgid) {
okini3939 4:07e752ff8dce 60 case NECMSG_ACK:
okini3939 4:07e752ff8dce 61 _ack = 1;
okini3939 4:07e752ff8dce 62 break;
okini3939 4:07e752ff8dce 63 case NECMSG_NOACK:
okini3939 4:07e752ff8dce 64 _noack = 1;
okini3939 4:07e752ff8dce 65 break;
okini3939 4:07e752ff8dce 66 case NECMSG_RESEND:
okini3939 4:07e752ff8dce 67 _resend = 1;
okini3939 4:07e752ff8dce 68 DBG("error resend %d %d\r\n", _rxmsg.parameter[0], _rxmsg.parameter[1]);
okini3939 4:07e752ff8dce 69 break;
okini3939 4:07e752ff8dce 70 case NECMSG_SEARCH:
okini3939 4:07e752ff8dce 71 break;
okini3939 4:07e752ff8dce 72 case NECMSG_SEND_DAT:
okini3939 4:07e752ff8dce 73 case NECMSG_SEND_NOACK:
okini3939 4:07e752ff8dce 74 _received = 1;
okini3939 4:07e752ff8dce 75 break;
okini3939 4:07e752ff8dce 76 }
okini3939 4:07e752ff8dce 77 return;
okini3939 4:07e752ff8dce 78 }
okini3939 4:07e752ff8dce 79
okini3939 4:07e752ff8dce 80 int NECnfc::send (NECMSG msgid, unsigned int dest, const char *param, int len) {
okini3939 4:07e752ff8dce 81 int i;
okini3939 4:07e752ff8dce 82 struct ifMessage ifmsg;
okini3939 4:07e752ff8dce 83 unsigned char *buf = (unsigned char *)&ifmsg;
okini3939 4:07e752ff8dce 84 Timer t;
okini3939 4:07e752ff8dce 85
okini3939 4:07e752ff8dce 86 if (len > NEC_MAXLENGTH) len = NEC_MAXLENGTH;
okini3939 4:07e752ff8dce 87 _msgno = (_msgno + 1) & 0xff;
okini3939 4:07e752ff8dce 88 ifmsg.start = htons(0x0f5a);
okini3939 4:07e752ff8dce 89 ifmsg.length = NEC_HEADER_SIZE + len;
okini3939 4:07e752ff8dce 90 ifmsg.msgid = msgid;
okini3939 4:07e752ff8dce 91 ifmsg.msgno = _msgno;
okini3939 4:07e752ff8dce 92 ifmsg.dstid = htonl(dest);
okini3939 4:07e752ff8dce 93 ifmsg.srcid = htonl(_id);
okini3939 4:07e752ff8dce 94 memcpy(ifmsg.parameter, param, len);
okini3939 4:07e752ff8dce 95
okini3939 4:07e752ff8dce 96 _ack = 0;
okini3939 4:07e752ff8dce 97 _noack = 0;
okini3939 4:07e752ff8dce 98 _resend = 0;
okini3939 4:07e752ff8dce 99 for (i = 0; i < ifmsg.length; i ++) {
okini3939 4:07e752ff8dce 100 _nec.putc(buf[i]);
okini3939 4:07e752ff8dce 101 }
okini3939 4:07e752ff8dce 102
okini3939 4:07e752ff8dce 103 t.start();
okini3939 4:07e752ff8dce 104 for (;;) {
okini3939 4:07e752ff8dce 105 if (_ack || _noack || _resend) break;
okini3939 4:07e752ff8dce 106 if (t.read() > NEC_TIMEOUT) {
okini3939 4:07e752ff8dce 107 DBG("timeout\r\n");
okini3939 4:07e752ff8dce 108 t.stop();
okini3939 4:07e752ff8dce 109 return -1;
okini3939 4:07e752ff8dce 110 }
okini3939 4:07e752ff8dce 111 }
okini3939 4:07e752ff8dce 112 t.stop();
okini3939 4:07e752ff8dce 113 DBG(" ack %d, noack %d, resend %d\r\n", _ack, _noack, _resend);
okini3939 4:07e752ff8dce 114 return _ack ? 0 : -1;
okini3939 4:07e752ff8dce 115 }