test.c

51单片机经典程序。初学者使用。包括键盘控制

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************************* ********* 程序功能说明 ******************************************************
  -- 向蜂鸣器发送一定频率的方波可以使蜂鸣器发出相应的音调，该实验使蜂鸣器发出"多来咪发梭拉西多"的音调。
********************************************************************************************************/
#include "reg52.h"

sbit speaker = P2^4;


void Delay(int m)
{
	while(--m);
}

void main(void)
{
	int i;
	while(1)
	{
	    speaker= 1;
		for(i=0;i<15;i++)
		{
			speaker= 0;
			Delay(5000);
			speaker= 1;
			Delay(20000);
			
			speaker= 0;
			Delay(35000);
			speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(3000);
			speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(6000);
	    	speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(30000);
			speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(2000);
			speaker= 1;
			Delay(20000);

            speaker= 0;
			Delay(40000);
	    	speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(5000);
			speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(1000);
			speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(2000);
			speaker= 1;
			Delay(20000);

			speaker= 0;
			Delay(4000);
			speaker= 1;

			
		}
	}
}