/*
  PMA770Relay Alpha2

  dewdude@gmail.com - 29-12-2019
  
 */
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

int latchPin = 11;
int clockPin = 9;
int dataPin = 12;
int matrix = A0;

byte out = 0;
int mx = 0;

void updateShiftRegister()
{
   digitalWrite(latchPin,LOW);
   shiftOut(dataPin, clockPin, LSBFIRST, out);
   digitalWrite(latchPin, HIGH);
}

void DontCrossTheStreams()
{
  out = 0;
  updateShiftRegister();
// Don't cross the streams!
}

void setTape2()
{
  DontCrossTheStreams();
  bitSet(out,7);
  updateShiftRegister();
}

void setTape1()
{
  DontCrossTheStreams();
  bitSet(out,6);
  updateShiftRegister();
}

void setAUX()
{
  DontCrossTheStreams();
  bitSet(out,5);
  updateShiftRegister();
}

void setTune()
{
  DontCrossTheStreams();
  bitSet(out,4);
  updateShiftRegister();
}

void setPh1()
{
  DontCrossTheStreams();
  bitSet(out,3);
  bitSet(out,1);
  updateShiftRegister();
}

void setPh2()
{
  DontCrossTheStreams();
  bitSet(out,3);
  bitSet(out,2);
  updateShiftRegister();
}

void setup()
{
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  bitSet(out,5);
  updateShiftRegister();
}

void loop() {

int mx = analogRead(matrix);
  if (mx > 100 && mx < 200) setTape2();
  if (mx > 500 && mx < 600) setTape1();
  if (mx > 900 && mx < 950) setAUX();
  if (mx > 1000) setTune();
  if (mx > 820 && mx < 899) setPh1();
delay(200);
}