//please note that this is a work-in-progress sketch and probably doesn't work

#define padCount 2
//number of pads

elapsedMicros padTimer1; //seems to be accurate from >1000
elapsedMicros padTimer2;

int padTime1 = 1000; //the pad will be checked every 1000us


int padAttack = 10;
int padTicks = 600;

int padValue[padCount];
int ticks=0;
int oldValue[padCount];
boolean triggered[padCount] ;

#define led 13

void setup(){
  Serial.begin(9600);
  pinMode(12,INPUT_PULLUP);
  pinMode(led, OUTPUT);
  digitalWrite(led, HIGH);
  analogReference(INTERNAL);
  analogReadAveraging(16); //32 is max
  analogReadRes(7);

  padTimer1 = 0;
  padTimer2 = 0;
  Serial.println(padTimer1);
}

void loop() {
  while (digitalRead(12) == HIGH){
    if (padTimer1 >= padTime1) { //check the sensor at a specified time

      Serial.println("first:"+padTimer1);
      padTimer1 =- padTime1; //reset the timer
      Serial.println(padTimer1);

      for (int i = 0; i<padCount;i++){
        padValue[i] = analogRead(i+14); //read and save all values
      }

      for (int i = 0; i<padCount;i++){
        Serial.print(i+" sensor is  ");
        Serial.println( padValue[i] );
        if ( padTimer2 >= padTicks * padTime1){

          if (triggered[i] == HIGH){
            Serial.println(" Trigger off");
            //usbMIDI.sendNoteOff(60, 0, 1);
            digitalWrite(led, HIGH);
            triggered[i] = LOW;
          }

          if (padValue[i] >= padAttack){
            if (oldValue[i] >= padValue[i]){
              triggered[i] = HIGH;
              Serial.print(i+" "+ padValue[i] );
              Serial.println(" BAM");
              //usbMIDI.sendNoteOn(60, padValue, 1);
              //tone (0, map(padValue,0,1023,220,1000),100);
              digitalWrite(led, LOW);
              padTimer2 = 0;
              oldValue[i] = 0;
            }
            else if (oldValue[i] < padValue[i]){
              oldValue[i] = padValue[i];
            }
          }
        }

      }

    }
  }
}