/////////////////////////////////////////////////////////////////////////
////                    Project_1 | Heamchand Subryan       		 ////
////		Using two temperature sensor inputs and store their  	 ////
////              		  values in EEPROM			/////
//// 		 This program reads and writes to internal eeprom	 ////
////////////////////////////////////////////////////////////////////////////


#include <16F877.h>								// match to your chip
#include <stdio.h>								// include to use "printf" statement
#fuses HS,NOPROTECT,NOLVP,NOWDT							// setup fuses
#use delay(clock=20000000)							// match to crystal speed
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)					// setup serial port
		

// The following initializes the first 4 locations of the data EERPOM
//  using the #ROM directive

#rom 0x2100={1,1,7,7}


main() {
    byte poll,i,j,address,value,a2dvalue;				// create variables
	set_tris_d(0b00000000);						// setup PORTD for TestLED


setup_port_a(ALL_ANALOG);           					//Set up Port A as A2D
setup_adc(adc_clock_internal);						//Set up clock for ADC
set_adc_channel( 0 );							//Set the channel/Pin Number for ADC
a2dvalue = read_adc();
address = 0;


    while (TRUE)
	{
	  output_high(pin_d1);						// blink TestLED to see that PIC is looping					
	  delay_ms(1000);
	  output_low(pin_d1);
	  delay_ms(1000);
	  output_high(pin_d1);
	  delay_ms(1000);
	  output_low(pin_d1);
	  delay_ms(1000);


//set a conditional statement which produces data at opposite ends.
	
	if (a2dvalue <= 50)								// if a2dvalue is < 50, blink led and write to eeprom
		{                           					
			OUTPUT_B(0b00001111);
			
		}
		
	else if (a2dvalue >= 128)                 					 // if a2dvalue is > 128 blink led and write to eeprom
		{                                  				 
			OUTPUT_B(0b11110000);
		
		}									// Wait until polled before advancing

// submitting data via analog and writing it to EEPROM:
	  
	for(address=0; address<=255; address++)						// bytes of the data EEPROM in hex
		{	  
	 	 write_eeprom(address, a2dvalue);					// writes values to eeprom	
  		}

}
}