AVR Freaks

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 		//INCLUDE PWM TIMER

unsigned int timeL,timeH;

int channel_one , channel_two;   
char hundreds[11]={'0','1','2','3','4','5','6','7','8','9','T'};
char tens[10]={'0','1','2','3','4','5','6','7','8','9'};
char no[10]={'0','1','2','3','4','5','6','7','8','9'};
void ADC_SEND(void);
void InterruptHandlerLow(void);			// Low priority interrupt service routine

#pragma code InterruptVectorLow = 0x018	// Low priority interrupt vector
void InterruptVectorLow(void) 
{
  	_asm
 	goto	InterruptHandlerLow			// Jump to interrupt routine
  	_endasm
}


#pragma code									
#pragma interruptlow InterruptHandlerLow


void InterruptHandlerLow() 			// Low Priority Interrupt Routine
{		
	

	if(PORTCbits.RC4==1)			//IF SIGNAL RECEIVED,
	T0CONbits.TMR0ON=0;				//STOP COUNTER
	timeL = TMR0L; // Save lower byte to variable 
	timeH = TMR0H; // Save lower byte to variable 

	
	ADCON0 = 0b00000001;			// Select AN0 for conversion ; A/D enabled
	ConvertADC();					// starts A/D conversion
	while (BusyADC());				// wait for conversion to finish
	channel_one = ReadADC(); 		// read the result of the A/D conversion for AN1
	CloseADC();						// disable the A/D converter

	ADCON0 = 0b00000101;			// Select AN1 for conversion				
	ConvertADC();					// Start A/D conversion
	while (BusyADC());				// wait for conversion to finish
	channel_two = ReadADC();   		// read the result of the A/D conversion for AN2
	CloseADC();						// disable the A/D converter
   

	while (BusyUSART());	       	// ensure the serial port is not busy
    WriteUSART('s');
    while (BusyUSART());
	WriteUSART(hundreds[(channel_one/100)]);
    while (BusyUSART());
	WriteUSART(tens[(channel_one%100)/10]);
	while (BusyUSART());
	WriteUSART(no[(channel_one%100)%10]);
	
	while (BusyUSART());
	WriteUSART(hundreds[(channel_two/100)]);
     while (BusyUSART());
	WriteUSART(tens[(channel_two%100)/10]);
	while (BusyUSART());
	WriteUSART(no[(channel_two%100)%10]);
}



									//////////////////	
//----------------------------------// Main Program //-----------------------------------------------
									//////////////////									
void main()
{	
	TRISA = 0b11111111;				    // sets Port A as input - for analog input
	TRISB = 0b00000000;					// sets Port B as output - for digital output ?
	TRISC	= 0b10011000;				//RC7(R-X) as input & RC6(TX) as output 
	//TRISC = 0x10111111;				// sets Port C bit 6 (TX) as output and the rest as input
	INTCON 	= 0b11100000;				// Enables all Interrupt, Peripheral Interrupt and TMR0
 	//configure and activate the internal oscillator
	OSCCON = 0b01110000;        	 	//select internal 8Mhz frequency
	OSCTUNE = 0b01000000;				// PLL Mode enable, Total Internal Oscillation = 32MHz 
	

	//TIMER0 SETTINGS
	OpenTimer0 (TIMER_INT_ON &			// On Timer0 Interrupt
			   T0_16BIT &				// 16-bits Mode
			   T0_SOURCE_EXT &			// External Clock Source
			   T0_PS_1_8);				// Set Prescaler to 1:8
	
	//RS232 SETTINGS
	OpenUSART(USART_TX_INT_OFF &		// Transmitter Interrupt Off
			USART_RX_INT_OFF &			// Receiver Interrupt Off
			USART_ASYNCH_MODE &			// Set USART to Asynchronous Mode
			USART_EIGHT_BIT &			// 8-bits Data
			USART_CONT_RX &				// Continuous Reception
			USART_BRGH_HIGH,103);		// High Speed Rate and Baud Rate = 19200 {(32000000/19200*16)} - 1


	//THIS IS THE SETTING FOR THE PULSE WIDTH MODULATION
	//THIS IS IN PIN 13
	OpenTimer2(TIMER_INT_OFF & T2_PS_1_1 & T2_POST_1_1);	//OPEN PWM. PRESCALAR IS 1:1
	OpenPWM1(0xc7);	//REFER TO A FOR CALCULATION									
	SetDCPWM1(400);	//REFER TO B FOR CALCULATION

   	RCONbits.IPEN		= 1;			// Enable Priority Level
   	INTCON2bits.TMR0IP	= 0;  			// Set Timer0 Interrupt with Low Priority
   	INTCONbits.GIEH 	= 1;			// Enable Interrupts with Low Priority
  	INTCONbits.GIEL		= 1;			// Enable Global Interrupt

	
 
	//// open A/D module ////--------------------------------------------------------------------------
		 
	ADCON1 = 0b00001100;				// configure AN0, AN1 and AN2 as analog channels
	ADCON2 = 0b10010010;				// A/D result right justified; 12 TAD ; FOSC/32;ACQ=4TAD

	if(PORTCbits.RC2==1)		//IF SIGNAL IS TRANSMITTED,
	T0CONbits.TMR0ON=1;			//START COUNTER FROM 0 BITS
	TMR0L=0b00000000;
	TMR0H=0b00000000;  		
	while(1);
}