/*************************************************

實驗名稱：定時器實驗一

實驗目的：利用定時器/計數器讓發光二極管以1HZ閃爍

*************************************************/

#include<reg52.h>

sbit P10 = P1^0;

unsigned char flag;

void main()

{

flag = 0;

P10 = 0;

TH0 = 0xfe;

TH0 = 0xff;

EA = 1;

ET0 = 1;

TR0 = 1;

while(1);

{

if(flag == 1)

{

flag = 0;

P10 = ~P10;

}

}

}

void Timer_0() interrupt 1

{

TH0 = 0xfe;

TH0 = 0xff;

flag = 1;

}

/*************************************************

實驗名稱：定時器實驗二

實驗目的：利用定時器/計數器T1產生定時時鐘，由P1口

?控制8個發光管。使8個指示燈依次一個一個閃

?動，閃動頻率為10次/秒

*************************************************/

#include<reg52.h>

#include<intrins.h>

unsigned char Flag = 0;

sbit SPK = P2^3;

void main()

{

TMOD = 0x01;

TH0 = (65535-23040)/256;

TL0 = (65535-23040)%256;

EA = 1;

ET0 =1;

TR0 = 1;

P1 = 0x7f;

SPK = 0;

while(1)

{

if(Flag == 5)

{

Flag = 0;

P1 = _cror_(P1,1);

SPK = ~SPK;

}

}

}

void Timer0() interrupt 1

{

TH0 = (65535-23040)/256;

TL0 = (65535-23040)%256;

Flag++;

}

/*************************************************

實驗名稱：定時器實驗三

實驗目的：利用定時器以間隔500ms在6位數碼管上依次

?顯示0、1、2、3。。。C、D、E、F，重復。

*************************************************/

#include<reg52.h>

sbit DUAN = P2^6;

sbit WEI = P2^7;

#define uchar unsigned char

#define uint unsigned int

//uchar code wei_table[]=

//{};

uchar code duan_table[]=

{0x3f,0x06,0x5b,0x4f,

?0x66,0x6d,0x7d,0x07,

?0x7f,0x6f,0x77,0x7c,

?0x39,0x5e,0x79,0x71};

uchar Flag = 0;

uchar i = 0;

void main()

{

TMOD = 0x01;

EA = 1;

ET0 = 1;

TH0 = (65535-46080)/256;

TL0 = (65535-46080)%256;

TR0 = 1;

while(1)

{

if(Flag == 10)

{

Flag = 0;

P0 = duan_table[i];

DUAN = 1;

DUAN = 0;

P0 = 0xff;

P0 = 0;

WEI = 1;

WEI = 0;

i++;

if(i == 16)

i = 0;

}

}

}

void Timer0() interrupt 1

{

TH0 = (65535-46080)/256;

TL0 = (65535-46080)%256;

Flag++;

}

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