旋转编码器数码管定时器显示

/*程序时间录：2015-11-16

/

/ */

#include

#include

#define uchar unsigned char

#define uint unsigned int

sbit PINA = P3^2;

sbit PINB = P3^3;

sbit SMG=P4;

//sbit SMG2=P1^1;

uint num_count;

uchar dis_buf[4];

uchar code dis_wei[4]={0x01,0x02,0x04,0x08};

uchar code

LED_SMG[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//0x88,0x83,0xc 6,0xa1,0x86,0x8e} //阳码

void Delay5ms(void);

void Timer0Init(void); //1毫秒@11.0592MHz

void delay(uint time) //int型数据为16位,所以最大值为65535

{

uint i,j; //定义变量i,j,用于循环语句

for(i=0;i

for(j=0;j<100;j++);

}

//编码器扫描

void scan_encoder()

{

static bit Curr_encoder_b; //定义一个变量来储存当前B信号

static bit Last_encoder_b; //定义一个变量来储存上次B脚信号

static bit updata=0;

if( PINA && PINB) //编码器无转动退出

{

updata = 0;

return;

}

Last_encoder_b = PINB; //记录B信号

while(!PINA) //等待A由低变高

{

Curr_encoder_b = PINB; //记录等待期间的B信号(指当前B信号)

updata = 1;

}

if(updata)

{

updata = 0 ;

if( (Last_encoder_b == 0)&&(Curr_encoder_b== 1) ) //B从0到1为正转 {

if(num_count == 99)

return;

num_count++; //正转计数加

Delay5ms();

}

else if( (Last_encoder_b == 1)&&(Curr_encoder_b == 0) ) //B从1到0为反转 {

if(num_count == 0)

return;

num_count--; //反转计数减

Delay5ms();

}

}

}

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

void Delay5ms() //@11.0592MHz

{

unsigned char i, j;

i = 54;

j = 199;

do

{

while (--j);

} while (--i);

}

void main()

{

uchar t;

P4M1=0x00;

P4M0=0x0f;

P2M1=0x00;

P2M0=0xff;

P3M1|=0x0c;

P3M0|=0x00; //设置P32-33 IO口为高阻输入

SMG=0x00;

// SMG2=0;

// SMG3=0;

// SMG4=0;

Timer0Init();

ET0=1;

EA=1;

while(1)

{

scan_encoder();

}

}

void Timer0Init(void) //1毫秒@11.0592MHz

{

AUXR |= 0x80; //定时器时钟1T模式

TMOD &= 0xF0; //设置定时器模式

TL0 = 0xCD; //设置定时初值

TH0 = 0xD4; //设置定时初值

TF0 = 0; //清除TF0标志

TR0 = 1; //定时器0开始计时

}

void TIMER0_SER() interrupt 1

{

uchar num;

TR0=0;

TF0=0;

TL0 = 0xCD; //设置定时初值

TH0 = 0xD4; //设置定时初值

//num_count=9999;

dis_buf[3] = num_count/1000; //千位数据

dis_buf[2] = num_count/100%10; //百位数据

dis_buf[1] = num_count/10%10; //十位数据

dis_buf[0] = num_count%10; //个位数据

for(num=0;num<4;num++)

{

P2=LED_SMG[dis_buf[num]];

P4=dis_wei[num];