这个程序是利用T0的溢出中断。来定时控制LED的闪亮.
Prouets仿真的截图：
Studio6.2截图：
具体程序：
/*
* GccApplication21.c
*
* Created: 2014-10-17 21:43:54
* Author: Administrator
*/
#define F_CPU 4000000UL
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdint.h>
#define LED_BLINKL()(PORTC ^= 0x01)
uint16_t T_Count = 0;
int main(void)
{
DDRC = 0x01;
TCCR0 = 0x05;
TCNT0 = 256 - F_CPU/1024.0*0.05;
TIMSK = 0x01;
sei();
while(1)
{
//TODO:: Please write your application code
}
}
ISR(TIMER0_OVF_vect)
{
TCNT0 = 256 - F_CPU/1024.0 *0.05;
if(++T_Count != 5) return;
T_Count = 0;
LED_BLINKL();
}
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