2.c

来自「上传一些」· C语言 代码 · 共 75 行

#include<reg52.h>
#include<intrins.h>
sbit m=P2^5;
sbit feng=P2^3;
unsigned char flag,flag1,flag2,flag3,h;
unsigned int x,y;
void delay()  //500ms
		{
			for(x=0;x<229;x++)
				for(y=0;y<250;y++);
		}
void main()
		{
			flag=0;
			m=1;
			h=0x7f;
			P1=0xff;
			feng=1;
			TMOD=0x11;
			EA=1;
			ET0=1;
			ET1=1;
			TH0=0x4c;
			TL0=0x00;
			TH1=0x4c;
			TL1=0x00;
			TR0=1;
         delay();
			TR1=1;
			while(1)
				{
					if(flag1==1)
					{	
						flag1=0;
						P1=_crol_(h,1);
						feng=0;
						h=P1;//必须把H的值变了，要不下次H还是0xfe
					}
					if(flag3==1)
					{
						flag3=0;	
						P1=0xff;	
						feng=1;	
					}
				}
		}

void inter(void) interrupt 1 using 1
		{
		
			TH0=0x4c;
			TL0=0x00;
			flag++;
			if(flag==20)
				{
					flag=0;
					flag1=1;
				}
		}

void inter2(void) interrupt 3 using 2
		{
		
			TH1=0x4c;
			TL1=0x00;
			flag2++;
			if(flag2==20)
				{
					flag2=0;
					flag3=1;
				}
		}