使用GPIO控制蜂鸣器

使用GPIO控制蜂鸣器

#include "config.h"
#define BEEPCON 0x00000080
void DelayNS(uint32 dly)
{
	uint32 i;
	for(;dly>0;dly--)
		for(i=0;i<5000;i++);
 } 
 int main(void){
 	PINSEL0 = 0x00000000;
 	IO0DIR = BEEPCON;
 	while(1){
 		IO0SET = BEEPCON;
 		DelayNS(10);
 		IO0SET = BEEPCON;
 		DelayNS(10);
	 }
	return 0;
 }