Motorcycle-Sound-Mod-Using-Arduino/Basicprogram at master · fawazahmed0/Motorcycle-Sound-Mod-Using-Arduino · GitHub

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#include "SD.h"
#define SD_ChipSelectPin 53
#include "TMRpcm.h"
#include "SPI.h"

//  use more minutes sound to avoid tmrpcm.loop breaks
TMRpcm tmrpcm;

int vol=0 , basefreq = 16000,basevol = 1;
// double timefactor;
byte btt;
char filename[] = "6.wav";
double x=0,y=0,z=0;


void setup(){

tmrpcm.speakerPin = 11;
 tmrpcm.speakerPin2 = 12;
 btt  = B01100000;
Serial.begin(9600);
if (!SD.begin(SD_ChipSelectPin)) {
Serial.println("SD fail");
return;
}


tmrpcm.SAMPLE_RATE = basefreq;
tmrpcm.quality(1);
tmrpcm.loop(1);
tmrpcm.setVolume(basevol);
tmrpcm.play(filename);


}

void loop(){
  // reading frequency value from serial
   z= Serial.parseFloat();


if(z!=0&&z<1001){
  // map function ,takes value between  0 and 1000 and adjust freq and sound accordingly
x = map(z,0,1000,basefreq,45000);
vol = map(z,0,1000,basevol,5);
tmrpcm.setVolume(vol);


// setting sample rate
 tmrpcm.SAMPLE_RATE = x;
 // setting resolution
  if(bitRead(btt,6)){tmrpcm.resolution = 10 * (800000/tmrpcm.SAMPLE_RATE);}
    else{ tmrpcm.resolution = 10 * (1600000/tmrpcm.SAMPLE_RATE);
  }

 noInterrupts();
  tmrpcm.timerSt();
 //timefactor = y/x;
 interrupts();
 // currentval/newval
// timefactor = x/(32000.00/time);


}

  }