51單片機(jī)心跳顯示和聲音

[復(fù)制鏈接]

電梯直達(dá)

樓主

ID:441102 發(fā)表于 2018-12-23 20:12 | 只看該作者 |只看大圖回帖獎勵

|倒序?yàn)g覽 |閱讀模式

#include<reg52.h>
typedef unsigned char u8;
typedef unsigned int u16;
sbit beep=P3^7;//蜂鳴器
u8 h[][8]={{0x00,0x70,0x78,0x3c,0x1e,0x3c,0x78,0x70},
{0x00,0xe0,0xf0,0x78,0x3c,0x78,0xf0,0xe0}}; //愛心
u8 l[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};//列掃描
u8 k;

void time0init()  //定時(shí)器0初始化
{
TMOD=0X01;
TH0=0Xfc;
TL0=0X18;  //1ms
TR0=1;
EA=1;
ET0=1;
}

void main()
{
time0init();
while(1);
}
void time0() interrupt 1
{
static u16 i,j;
TH0=0Xfc;
TL0=0X18;  //1ms
i++;
if(i==800) //模仿心臟跳動頻率
{
i=0;
k++;
if(k==2)k=0;
beep=~beep;
}
P0=h[k][j];
P2=l[j];
j++;
if(j==8)j=0;
}

4D436B20836CA5F2F6EA41001AEC2DBF.png (159.54 KB, 下載次數(shù): 23)