TMP05/TMP06

Rev. 0 | Page 21 of 28

#include <stdio.h>

#include <ADuC812.h>

//ADuC812 SFR definitions

void delay(int);

sbit Daisy_Start_Pulse = 0xB7;

//Daisy_Start_Pulse = P3.7

sbit P3_4 = 0xB4;

long temp_high0,temp_low0,temp_high1,temp_low1,temp_high2,th,tl; //Global variables to allow

//access during ISR.

//See Figure 32.

int timer0_count=0,timer1_count=0,tempsegment=0;

void int0 () interrupt 0

//INT0 Interrupt Service Routine

{

if (TR1 == 1)

{

th = TH1;

tl = TL1;

th = TH1;

//To avoid misreading timer

TL1 = 0;

TH1 = 0;

}

TR1=1;

//Start timer1 running, if not running

Already

if (tempsegment == 1)

{

temp_high0 = (TH0*0x100+TL0)+(timer0_count*65536);

//Convert to integer

TH0=0x00;

//Reset count

TL0=0x00;

timer0_count=0;

}

if (tempsegment == 2)

{

temp_low0 = (th*0x100+tl)+(timer1_count*65536);

//Convert to integer

temp_high1 = (TH0*0x100+TL0)+(timer0_count*65536);

//Convert to integer

TH0=0x00;

//Reset count

TL0=0x00;

timer0_count=0;

timer1_count=0;

}

if (tempsegment == 3)

{

temp_low1 = (th*0x100+tl)+(timer1_count*65536);

//Convert to integer

temp_high2 = (TH0*0x100+TL0)+(timer0_count*65536);

TH0=0x00;

//Reset count

TL0=0x00;

timer0_count=0;

timer1_count=0;

}

tempsegment++;

}

void timer0 () interrupt 1

{

timer0_count++;

//Keep a record of timer0 overflows

}

void timer1 () interrupt 3

{

timer1_count++;

//Keep a record of timer1 overflows