KeypadShield.cpp

/*

  Project:       1Sheeld Library 
  File:          KeypadShield.cpp
                 
  Version:       1.0

  Compiler:      Arduino avr-gcc 4.3.2

  Author:        Integreight
                 
  Date:          2014.5

*/
#define FROM_ONESHEELD_LIBRARY
#include "OneSheeld.h"
#include "KeypadShield.h"


//Class Constructor
KeypadShieldClass::KeypadShieldClass() : ShieldParent(KEYPAD_SHIELD_ID)
{
  row=0;
  col=0;
  isCallbackAssigned=false;
}
//Row Checker 
bool KeypadShieldClass::isRowPressed(byte x)
{
  if(x>7)return false;
return !!(row&(1<<x));
}
//Column Checker
bool KeypadShieldClass::isColumnPressed(byte x)
{
  if(x>7)return false;
return !!(col&(1<<x));
}

//AnyRow Checker
bool KeypadShieldClass::isAnyRowPressed()
{
return !!row;
}
//AnyColumn Checker
bool KeypadShieldClass::isAnyColumnPressed()
{
return !!col;
}
//Keypad Input Data Processing
void KeypadShieldClass::processData()
{
  //Checking Function-ID
  byte functionId=getOneSheeldInstance().getFunctionId();
  if (functionId==KEYPAD_VALUE)
   { 
     row=getOneSheeldInstance().getArgumentData(0)[0];
     col=getOneSheeldInstance().getArgumentData(1)[0];
     //Users Function Invoked
     if (isCallbackAssigned && !isInACallback())
      {
        enteringACallback();
        (*buttonChangeCallback)(row,col);
        exitingACallback();
      }
   }
}

//Users Function Setter 
void KeypadShieldClass::setOnButtonChange(void (*userFunction)(byte row ,byte column))
{
  buttonChangeCallback=userFunction;
  isCallbackAssigned=true;
}