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標題: 求使用光電編碼器的程序，用1602顯示 [打印本頁]

作者: huangnima 時間: 2017-8-4 11:48
標題: 求使用光電編碼器的程序，用1602顯示
求使用光電編碼器的程序，用1602顯示轉速

作者: huangnima 時間: 2017-8-4 15:20
只頂自頂自頂

作者: 天12 時間: 2018-9-13 11:02
將A或B線連接到INT0,利用外部中斷0計數脈沖數，再利用定時器定時1秒后讀取計數，并計算對應角度，最后由LCD顯示所得轉速
#include<reg52.h>
typedef unsigned int u16;
typedef unsigned char u8;
#define DATA P0
sbit rs = P3^5;
sbit rw = P3^6;
sbit en = P3^4;
sbit du = P2^6;
sbit we = P2^7;
sbit P1_0=P1^0;

u8 count;
u16 z,num,n;
void delay(u16 z)
{
u16 x,y;
for(x=z;x>0;x--)
   for(y=114;y>0;y--);
}
void write_cmd(u8 cmd)
{
rs = 0;
rw = 0;
DATA = cmd;
delay(5);
en = 1;
delay(5);
en = 0;
}
void write_data(u8 dat)
{
rs = 1;
rw = 0;
DATA = dat;
delay(5);
en = 1;
delay(5);
en = 0;
}
void write_sfm(u8 add,u16 date)
{
u8 bai,shi,ge;
bai = (date%1000)/100;
shi = (date%100)/10;
ge  = date%10;
write_cmd(0x80+add);
write_data(0x30+bai);
write_data(0x30+shi);
write_data(0x30+ge);
}
void lcd_init(void)
{
du = 0;
we = 0;
write_cmd(0x02);
write_cmd(0x06);
write_cmd(0x0c);
write_cmd(0x38);
write_cmd(0x01);
write_cmd(0x80+9);
write_data(0xdf);

EA  = 1;
IT0 = 1;
EX0 = 1;
//  PX0 = 1;
TMOD = 0x01;
TH0 = 0x4b;
TL0 = 0xfd;
ET0 = 1;
TR0 = 1;
}

int main(void)
{
rw = 0;
rs = 0;
en = 0;
lcd_init();
while(1)
{
   P1_0=1;
}
}

void int0() interrupt 0
{
num++;

}
void timer0() interrupt 1
{
TH0=0x4b;
TL0=0xfd;
count++;
if(count==20) //定時1秒
{
   P1_0 = 0;
   n = num*0.18;  //1秒所轉的角度這個編碼器的分辨率為2000P/R
   write_sfm(5,n);
   delay(20);
   num=0;
   count = 0;
}
}

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