pll832.c

Example codes for ADuC8xx CPU family

//********************************************************************
//
// Author        : ADI 
//
// Date          : December 2002
//
// File          : Pll832.c
//
// Hardware      : ADuC832
//
// Description   : The test waits 1s to ensure PLL is stable, reads the CD bits and
//					then checks the CD bits. If an error occurs P3.4 pulses every second.
//					Then 0ms, 1ms, 255ms, 256ms, 257ms, 32.6s,33s and 65.535s are measured
//					off with P3.4 toggling after each time period. 
//					The periods can thus be checked on an oscilloscope. 
//					If the test has passed P3.4 flickers continuously.
//		
//********************************************************************//pll834.c


#include<ADuC832.h>			//SFR definition file.
#include"../../lib832.h"  	//Function and variable declaration file.
#include<stdio.h>


void PllErr(char cDly);
void flicker(void);

void main(void)
	{
	PllDly(1000);
	PllWcd(0);
	if(PllRcd()!=0)	PllErr(3);
	T0 = 0;
	PllDly(0);
	T0 = !T0;
	PllDly(1);
	T0 = !T0;
	PllDly(255);
	T0 = !T0;
	PllDly(256);
	T0 = !T0;
	PllDly(257);
	T0 = !T0;
	PllDly(32600);
	T0 = !T0;
	PllDly(33000);
	T0 = !T0;
	PllDly(65535);
	T0 = !T0;
	while(1)	flicker();
	}
	
void PllErr(char cDly)
	{
	while(1)
        	{
		PllDly(cDly*1000);
		T0 = 1;
		PllDly(100);
		P3 = 0x00;
	}	}
	
void flicker(void)
	{
	char c1;
	
        for(c1=0; c1<32; c1++)
        	{
		PllDly(30);
		T0 = 1;
		PllDly(30);
		P3 = 0x00;
	}	}