m21_timer.txt

来自「CoreRiver MCU C语言程序集! 包括:ADC/POWER/PWM/」· 文本 代码 · 共 40 行

// File : m21_timer.c 

#include <GC89C520_TQ32I.H>

void main()
{
	while (!(STATUS & 0x10)); 	// XTUP Check (Crystal AMP)	
	EXIF = EXIF | XTRG_;		// System Clock is Crystal Osc. (default =0, Ring Osc.)
	
//
//	Set Trigger Port to Output.
//
	
	P0DIR=0;
	
	TMOD = 0x02;
	TH0 = 0xF0;
	TF0 = 0;
	
	EA = 1;
	ET0 = 1;
	TR0 = 1;
	
	while(1);
}

void timer0_int(void) interrupt TF0_VECTOR 
{
	TF0 = 0;
	
//
//	Set Trigger Signal.
//	
			
	P0_6=1;  
	P0_6=0;  
}