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pcmRF.cpp
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pcmRF.cpp
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#include <pcmRF.h>
#if defined(ENABLE_RF)
#include <Arduino.h>
#include <SD.h>
#include <SdFat.h>
#include <SPI.h>
#include <RF24.h>
boolean rfPlaying = 0;
const uint64_t addresses[14] = { 0xABCDABCD71LL, 0x544d52687CLL, 0x544d526832LL, 0x544d52683CLL,0x544d526846LL, 0x544d526850LL,0x544d52685ALL, 0x544d526820LL, 0x544d52686ELL, 0x544d52684BLL, 0x544d526841LL, 0x544d526855LL,0x544d52685FLL,0x544d526869LL};
#if !defined(SDFAT)
File txFile;
#else
SdFile txFile;
#endif
byte buff[32];
RF24 radi(0,0);
//************** RF SECTION ********************
pcmRF::pcmRF( RF24& _radio ){
radi = _radio;
}
void pcmRF::begin(){
radi.begin();
radi.setChannel(1); // Set RF channel to 1
radi.setAutoAck(0); // Disable ACKnowledgement packets
radi.setDataRate(RF24_1MBPS); // Set data rate as specified in user options
radi.setCRCLength(RF24_CRC_8);
radi.openWritingPipe(addresses[1]);
radi.openReadingPipe(1,addresses[0]);
}
boolean pcmRF::isPlaying(){
return rfPlaying;
}
void pcmRF::stop(){
TIMSK1 &= ~( _BV(OCIE1A) | _BV(OCIE1B) );
#if !defined(SDFAT)
if(txFile){txFile.close();}
#else
if(txFile.isOpen()){txFile.close();}
#endif
rfPlaying = 0;
}
void stop(){
TIMSK1 &= ~( _BV(OCIE1A) | _BV(OCIE1B) );
#if !defined(SDFAT)
if(txFile){txFile.close();}
#else
if(txFile.isOpen()){txFile.close();}
#endif
rfPlaying = 0;
}
void pcmRF::broadcast(byte device){
noInterrupts();
if(device == 255){
radi.openWritingPipe(addresses[1]);
}else{
radi.openWritingPipe(addresses[device+2]);
}
interrupts();
}
void pcmRF::play(const char* filename, byte device){
stop();
rfPlaying = 1;
if(device == 255){
radi.openWritingPipe(addresses[1]);
}else{
radi.openWritingPipe(addresses[device+2]);
}
#if !defined(SDFAT)
if(!txFile){ txFile = SD.open(filename);}
if(txFile){
txFile.seek(24); //skip the header info
#else
if(!txFile.isOpen()){ txFile.open(filename);}
if(txFile.isOpen()){
txFile.seekSet(24); //skip the header info
#endif
unsigned int SAMPLE_RATE = txFile.read();
SAMPLE_RATE |= txFile.read() << 8;
#if !defined(SDFAT)
txFile.seek(44);
#else
txFile.seekSet(44);
#endif
unsigned int res = (10 * (1600000/SAMPLE_RATE)) * 32;
noInterrupts();
ICR1 = res;
TCCR1A = _BV(WGM11);
TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10);
TIMSK1 = ( _BV(OCIE1A) );
interrupts();
}else{
#if defined (debug)
Serial.println("failed to open music file");
#endif
}
}
ISR(TIMER1_COMPA_vect){
radi.writeFast(&buff,32);
txFile.read((byte*)buff,32);
if(txFile.available() < 32){ radi.txStandBy(); stop(); }
}
#endif