daisenRemote.cpp

00001 /*
00002  * Daisen Remote library
00003  * Copyright (c) 2015 Hiroshi Suga
00004  * Released under the MIT License: http://mbed.org/license/mit
00005  *
00006  *   2.4GHz: http://www.daisendenshi.com/category_list.php?master_categories_id=102&categories_id=141&categories_name=2.4GHz%91%D1%96%B3%90%FC%83%8A%83%82%83R%83%93%91%97%90M%8A%ED
00007  *   Infrared: http://www.daisendenshi.com/category_list.php?master_categories_id=102&categories_id=106&categories_name=%90%D4%8AO%83%8A%83%82%83R%83%93%91%97%90M%8A%ED
00008  */
00009 
00010 #include "daisenRemote.h"
00011 
00012 daisenRemote::daisenRemote (PinName rx, enum remoteType type) : _ir(NC, rx) {
00013     _recv = 0;
00014     _count = 0;
00015     _type = type;
00016     if (_type == RF) {
00017         _ir.baud(38400);
00018     } else
00019     if (_type == IR) {
00020         _ir.baud(19200);
00021     }
00022     _ir.attach(this, &daisenRemote::isrRemote, Serial::RxIrq);
00023 }
00024 
00025 int daisenRemote::read () {
00026     int r = _recv;
00027     _recv = 0;
00028     return r;
00029 }
00030 
00031 void daisenRemote::isrRemote () {
00032     char c = _ir.getc();
00033 
00034     if (_type == RF) {
00035         // 2.4GHz Radio
00036         if (_count == 0 && c == 0x0f) {
00037             _buf[_count] = c;
00038             _count ++;
00039         } else
00040         if (_count == 1) {
00041             if (c == 0x5a) {
00042                 _buf[_count] = c;
00043                 _count ++;
00044             } else {
00045                 _count = 0;
00046             }
00047         } else
00048         if (_count >= 2 && _count < 19) {
00049             _buf[_count] = c;
00050             _count ++;
00051             if (_count == 19) {
00052                 if (_buf[13] == 0x83 && _buf[14] == 0x41 &&
00053                   _buf[17] != 0xff && _buf[17] == (~_buf[18] & 0xff)) {
00054                     _recv = _buf[17];
00055                     _func.call();
00056                 }
00057                 _count = 0;
00058             }
00059         } else {
00060             _count = 0;
00061         }
00062     } else
00063     if (_type == IR) {
00064         // Infrared
00065         if (c == 0x0a || c == 0x0d) {
00066             if (_count == 2) {
00067                 _buf[_count] = 0;
00068                 _recv = atoi(_buf);
00069                 _func.call();
00070             }
00071             _count = 0;
00072         } else
00073         if (_count < 2) {
00074             if (c >= '0' && c <= '9') {
00075                 _buf[_count] = c;
00076                 _count ++;
00077             } else {
00078                 _count = 0;
00079             }
00080         }
00081     }
00082 }