demo.c

基于AVRGCC的时钟DS1302的完整应用源代码

#include <avr/io.h>
#include <avr/pgmspace.h>

const char PROGMEM i = 0;

int fol __attribute__((section(".noinit"))) = 0x00FF;

int main(void)
{
	unsigned char i, j, k,led=0;
	
	const char *str = PSTR("Test");
	
	DDRB=0xff;
	while (1)
	{
		if(led)
			PORTB|=0X01;
		else
			PORTB&=0XFE;
		led=!led;
		//延时
		for (i=0; i<255; i++)
			for(j=0; j<255;j++)
				k++;
	}
	return 0;
}