/************************************************************************************************
#pragma config OSC = HS    //oscillator type is HS
#pragma config PWRT = ON, BOR = OFF //power-up timer is on, brown-out detect is off
#pragma config WDT = OFF //watchdog timer is off
Clock is 4MHz
Configuration Word all default:
crystal oscillator (XT), power-up timer on, brown-out detect off, WDT off, LV Program disabled*/
//************************************************************************************************




//************************************************************************************************
// include header files
#include <p16F877A.h>
#include <delays.h> //header file for delays
#include <timers.h> //header file for Timers
#include <adc.h> //header file for PWM
//************************************************************************************************


//************************************************************************************************
/*function prototypes, reproduced from Header Files for information

void OpenADC (unsigned char, unsigned char);    
void SetChanADC (unsigned char);     
void ConvertADC(void);       
char BusyADC(void);
int ReadADC(void);
void OpenTimer2 (unsigned char);
void Delay10KTCYx (unsigned char);
void Delay10TCYx (unsigned char); */
//************************************************************************************************


//************************************************************************************************
//User-defined function prototypes
void  init (void);
//************************************************************************************************



//************************************************************************************************
//Declare Variables
int light; //light sensor value
int temp; //temp sensor value
//************************************************************************************************




//************************************************************************************************
//Main Program
void main (void)
{
  init();  		 //call init function


while (1)
	{

		SetChanADC (ADC_CH0);	//Read and store light sensor value, channel 0
		Delay10TCYx (2); 	//delay for 20us approx acquisition time
		ConvertADC();
		while (BusyADC()); 	//wait for conversion to complete
		  light = ReadADC()&0x03FF; // read it, AND out unwanted bits

		SetChanADC (ADC_CH1);	//Read and store temp sensor value,  channel 1
		Delay10TCYx (2); //delay for 20us approx acquisition time
		ConvertADC();
		while (BusyADC());
		  temp = ReadADC()&0x03FF; // read it, AND out unwanted bits



		if (PORTBbits.RB4 == 0) //Test right uswitch
			PORTBbits.RB5 = 0;
		if (PORTBbits.RB4 == 1) 
			PORTBbits.RB5 = 1;
		Delay10KTCYx (10);
	
	}//end of while
} //end of main
//************************************************************************************************

//************************************************************************************************
//User Define functions 
void  init (void)
{
/*Initialises SFRs, and sets initial outputs. All unused port bits set to output. Used bits are identified.*/
	TRISA = 0b00000111; //All bits output,except 0 & 1 & 3 used for sensors inputs.
	TRISB = 0b00010000; //Bit 4 (microswitches) only input,
//Switch all outputs off
	PORTA = 0;
	PORTB = 0;
//Enable ADC. Port A bits 0,1,3 are analog input, internal reference,right justify result
	OpenADC(ADC_FOSC_8 & ADC_RIGHT_JUST & ADC_3ANA_0REF,ADC_CH0 & ADC_INT_OFF);
	


//************************************************************************************************
	
//	OpenTimer2 (TIMER_INT_ON & T2_PS_1_1 & T2_POST_1_1);
//	Define the interrupt vector to be at 0004h
//	#pragma code int_vector=0x04
//		void interrupt (void)
//		{
//			_asm GOTO timer2_isr _endasm //jump to ISR
//		}

//************************************************************************************************