用AtmelStudio6.2跑mega16例程（35）T0控制LED

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：

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/*

 * 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();

}