⑴ 51單片機開發板和絕對式編碼器連接測量角度的程序
#include <reg52.h>
#include "inc/delay.h"
#include "inc/hc595.h"
#define uchar unsigned char
#define uint unsigned int
sbit PIN_ROTARY_A = P2^0; //引腳1介面
sbit PIN_ROTARY_B = P2^1; //引腳2介面
sbit PIN_ROTARY_C = P2^2; //按下的介面
sbit PIN_ROTARY_D = P2^3; //按下的介面
//uchar code table[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};
/* 存儲待發送的數據 */
/* 1->8的段碼表 */
code unsigned char ucDis_Segmentcode[16] = {0x3f,0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
/* 位碼表 */
code unsigned char ucDis_Bitcode[8] = {0xFE, 0xFD, 0xFB, 0xF7, 0xEF, 0xDF, 0xBF, 0x7F};
uchar dis_XS[8] = {0x3f,0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d};
uchar count = 0;
uchar flag;
uchar Last_BMB_status;
uchar Current_BMB_status;
void display()
{
uchar i;
dis_XS[0] = ucDis_Segmentcode[count/100]; //百位
dis_XS[1] = ucDis_Segmentcode[count%100/10]; //十位
dis_XS[2] = ucDis_Segmentcode[count%10]; //個位
if(i < 2)
{
i++;
}
else
{
i = 0;
}
// for (i = 0; i < 3; i++ )
{
Send_Data(dis_XS[i], ucDis_Bitcode[i]);
//PIN_ROTARY_D = 0;
// Delay1ms(1);
}
}
//************************************************
void main()
{
TMOD=0x01; //定時器0，工作方式1
TH0=0xD8;
TL0=0xF0; //給定時器裝上初值，10ms中斷一次
ET0=1; //打開定時器中斷
EA =1; //打開總中斷
TR0=1; //啟動定時器0
while(1)
{
//display();
Last_BMB_status=PIN_ROTARY_B;
while(!PIN_ROTARY_A) //BMA為低電平時
{
Current_BMB_status = PIN_ROTARY_B;
flag = 1; //標志位置為1說明編碼開關被旋轉了
}
if(flag == 1)
{
flag = 0; //時刻要注意這一點！給標志位清零
if((Last_BMB_status == 0)&&(Current_BMB_status == 1)) //BMB上升沿表示正轉
{
count++;
if(count == 255)
{
count = 0;
}
}
if((Last_BMB_status == 1)&&(Current_BMB_status == 0)) //BMB下降沿表示反轉
{
count--;
if(count == 0)
{
count = 255;
}
}
}
}
}
//***********************************************
void timer0() interrupt 1//定時器0的中斷服務程序
{
TH0=0xF8; // TH0=0xD8;
TL0=0xF0; //再次裝入初值
display(); //每隔10ms顯示一次
if(!PIN_ROTARY_C) //按下旋轉編碼開關則計數清零
{
count = 0;
}
PIN_ROTARY_D = !PIN_ROTARY_D;
}
⑵ 旋轉編碼器怎麼連接51單片機
應該是STC89C52吧？？
能不能直接連接第一個要看你的旋轉編碼器的介面電平是否與單片機兼容，第二還要看編碼器的解析度和電動機的最高轉速，如果解析度×最高轉速>程序運算周期，那就要加分頻電路。