IR.cpp

00001 #include "mbed.h"
00002 #include "IR.h"
00003 #include "TxIR.hpp"
00004 
00005 #define WORD(x, i) ((x)[(i)] << 8 | (x)[(i) + 1])
00006 
00007 TxIR txir(p14);
00008 
00009 #define DEBUG 1
00010 #ifdef DEBUG
00011     Serial px(USBTX, USBRX);
00012     #define LOG(args...)    px.printf(args)
00013 #else
00014     #define LOG(args...)
00015 #endif
00016 
00017 void fireIRCode(uint8_t* header, uint8_t* one, uint8_t* zero, uint8_t* ptrail, uint8_t* predata, uint8_t* code) {
00018     LOG("Going to fire.\n");
00019     int raw_codes_length = 67;
00020     unsigned raw_codes[raw_codes_length];
00021     raw_codes[0] = WORD(header, 0);
00022     raw_codes[1] = WORD(header, 2);
00023     int offset = 2;
00024     for(int i = 0; i < 16 * 2; i += 2) {
00025         int bit = predata[i / 16] & 0x80;
00026         uint8_t* signal = bit ? one : zero;
00027         raw_codes[i + offset] = WORD(signal, 0);
00028         raw_codes[i + offset + 1] = WORD(signal, 2);
00029         predata[i / 16] <<= 1;
00030     }
00031     offset = 34;
00032     for(int i = 0; i <  16 * 2; i += 2) {
00033         int bit = code[i / 16] & 0x80;
00034         uint8_t* signal = bit ? one : zero;
00035         raw_codes[i + offset] = WORD(signal, 0);
00036         raw_codes[i + offset + 1] = WORD(signal, 2);
00037         code[i / 16] <<= 1;
00038     }
00039     raw_codes[67] = WORD(ptrail, 0);
00040     
00041     txir.txSeq(26.32 / 1000000.0, 67, raw_codes);
00042     
00043     LOG("Wrote message :)\n");
00044 }