08 Individual relay drive by (TPIC6B595)

Projects Programming
6

This sketch toggle both relay at once from both buttons.

const int latchPin = 10;
const int clockPin = 9;
const int dataPin = 12;
const int OE        = 11;
byte leds = 0;

const uint32_t debounceTime = 50;  // 5 mSec, enough for most switches
const uint8_t switchPin1     = A0;  // with n.o. momentary pb switch to ground
const uint8_t switchPin2     = 5;  // with n.o. momentary pb switch to ground

#define ledPin1      13

const bool switchOn  = true;     // with capasitive touch
const bool switchOff = false;

bool lastState1   = switchOff;
bool newState1    = switchOff;
bool toggleState1 = false;

bool lastState2   = switchOff;
bool newState2    = switchOff;
bool toggleState2 = false;

void setup()
{

  Serial.begin(9600);
  pinMode(OE, OUTPUT);
  digitalWrite(OE, LOW);
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode ( switchPin1, INPUT_PULLUP );
  pinMode ( switchPin2, INPUT_PULLUP );
  pinMode(ledPin1, OUTPUT);
  digitalWrite(ledPin1, LOW);
}

void loop()
{

  newState1 = digitalRead( switchPin1 );
  newState2 = digitalRead( switchPin2 );


  if ( lastState1 != newState1 ) // state changed
  {
    delay( debounceTime );
    lastState1 = newState1;

    // push on, push off
    if ( newState1 == switchOn && toggleState1 == false )
    {
      toggleState1 = true;

      leds ^= B00000001;
      updateShiftRegister();
    }
    else if ( newState1 == switchOn && toggleState1 == true )
    {
      toggleState1 = false;
      leds ^= B00000001;
      updateShiftRegister();
    }

  }



  if ( lastState2 != newState2 ) // state changed
  {
    delay( debounceTime );
    lastState2 = newState2;

    // push on, push off
    if ( newState2 == switchOn && toggleState2 == false )
    {
      toggleState2 = true;
      
      leds ^= B00000010;
      updateShiftRegister();
    }
    else if ( newState2 == switchOn && toggleState2 == true )
    {
      toggleState2 = false;
      
      leds ^= B00000010;
      updateShiftRegister();
    }
  }
}


void updateShiftRegister()
{
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, MSBFIRST, leds);
  digitalWrite(latchPin, HIGH);
}