blinky.c

来自「LPC2148参考程序」· C语言 代码 · 共 30 行

#include <LPC214x.H>                       /* LPC214x definitions  */

const unsigned int  LED=(1<<24);          //P1.24控制LED,低电平点亮

/******长延时********/
void DelayNS(unsigned int  dly )
{
	unsigned int  i;
	for(;dly>0;dly--)
		for(i=0;i<50000;i++);
}


int main (void)
{
	
	PINSEL2=PINSEL2&(~0x08);
	IO1DIR=LED;
	
	while(1)
	{

			IO1SET=LED;
			DelayNS(50);
			IO1CLR=LED;
			DelayNS(50);

	}
    return 0;
}