?? a.c
字號(hào):
/* ***************** 寫程序者 *********************
控制角度為9度(每步進(jìn)為9度步進(jìn))
***************************************************/
# include <at89x51.h>
unsigned char codes[2][8]={{0x02,0x06,0x04,0x0c,0x08,0x09,0x01,0x03}, //9,18,36,45,54,63,72,81度 順時(shí)針
{0x0b,0x09,0x0d,0x0c,0x0e,0x06,0x07,0x03}}; //9,18,36,45,54,63,72,81度 逆時(shí)針
unsigned char counts,flag,t;
// 度數(shù),正/反轉(zhuǎn),速度控制
delay(unsigned char x) //延時(shí)
{
unsigned char i;
for( i=0;i<x;i++);
}
main()
{
TMOD=0x01; //定時(shí)器初始化
TH0=(65536-5000)/256;
TL0=(65536-5000)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
{
if(P0_0==0) //判斷正轉(zhuǎn)按鍵是否按下
{
delay(5);
if(P0_0==0) flag=0; //判斷是否真正按下
}
if(P0_1==0) //判斷反轉(zhuǎn)按鍵是否按下
{
delay(5);
if(P0_1==0) flag=1; //判斷是否真正按下
}
}
}
void motor() interrupt 1
{
t++; //控制速度
if(t==8)
{
t=0;
P1=codes[flag][counts]; //轉(zhuǎn)動(dòng)
counts++;
if (counts==8) counts=0; //角度重置
}
TF0=0; //重新計(jì)時(shí)
TH0=(65536-5000)/256;
TL0=(65536-5000)%256;
}
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