#include "reg52.h"
#include "delay.h"
#define right_moto_go {IN2=1,IN3=0,IN4=1,IN5=0;} //右前电机
#define left_moto_go {IN0=1,IN1=0,IN6=1,IN7=0;} //左前电机
#define left_moto_back {IN2=0,IN3=1,IN4=0,IN5=1;} //右后电机
#define right_moto_back {IN0=0,IN1=1,IN6=0,IN7=1;} //左后电机
#define right_moto_stop {IN2=0,IN3=0,IN4=0,IN5=0;} //左电机停止
#define left_moto_stop {IN0=0,IN1=0,IN6=0,IN7=0;} //右电机停止
sbit IN0=P0^0;
sbit IN1=P0^1;
sbit IN2=P0^2;
sbit IN3=P0^3;
sbit IN4=P0^4;
sbit IN5=P0^5;
sbit IN6=P0^6;
sbit IN7=P0^7;
sbit h1=P1^0;
sbit h2=P1^1;
sbit h3=P1^2;
sbit h4=P1^3;
sbit EN1=P1^4;
sbit EN2=P1^5;
sbit EN3=P1^6;
sbit EN4=P1^7;
sbit TRIG=P2^1;
sbit ECHO=P2^0;
uchar temp;
uchar right_moto=0;
uchar left_moto=0;
uchar PWM_moto_right=0;
uchar PWM_moto_left=0;
float S;
void TIM0init(void); //定时器0
void Timer2Init(void); //定时器2
void UartInit(void); //串口通讯
void send(uchar a);
void run0(void) //前进0
{
left_moto=10;
right_moto=10;
right_moto_go;
left_moto_go;
}
void run1(void) //前进1
{
left_moto=6;
right_moto=6;
right_moto_go;
left_moto_go;
}
void run3(void) //前进3
{
left_moto=15;
right_moto=15;
right_moto_go;
left_moto_go;
}
void run2(void) //前进2
{
left_moto=7;
right_moto=7;
right_moto_go;
left_moto_go;
}
void back1(void) //后退1
{
left_moto=9;
right_moto=9;
right_moto_back;
left_moto_back;
}
void back2(void) //后退2
{
left_moto=15;
right_moto=15;
right_moto_back;
left_moto_back;
}
void left1(void) //左转1
{
left_moto=15;
right_moto=15;
right_moto_stop;
left_moto_go;
}
void left2(void) //左转2
{
left_moto=15;
right_moto=15;
right_moto_go;
left_moto_stop;
}
void right1(void) //右转1
{
left_moto=15;
right_moto=15;
right_moto_go;
left_moto_stop;
}
void right2(void) //右转2
{
left_moto=12;
right_moto=12;
right_moto_back;
left_moto_go;
}
void stop(void) //停止
{
right_moto_stop;
left_moto_stop;
}
void csb(void) //超声波避障
{
TRIG=1;
DelayUs2x(10); //触发信号是高电平脉冲,宽度大于10us
TRIG=0;
while(!ECHO); //等待高电平
TR0=1;
while(ECHO); //等待低电平
TR0=0;
S=TH0*256+TL0;
S=S/58;
TH0=0;
TL0=0; //清除定时器0寄存器中的值
if(S>20){run0();}
else
{
right2();
DelayMs(1000);
}
}
void Track(void) //循迹
{
if((h1==1)&&(h2==1)&&(h3==1)&&(h4==1))
{run1();}
else if((h1==0)&&(h2==1)&&(h3==0)&&(h4==0))
{run1();}
else if((h1==0)&&(h2==1)&&(h3==1)&&(h4==0))
{run1();}
else if((h1==0)&&(h2==0)&&(h3==1)&&(h4==0))
{run1();}
else if((h1==0)&&(h2==1)&&(h3==1)&&(h4==1))
{right1();}
else if((h1==0)&&(h2==0)&&(h3==1)&&(h4==1))
{right1();}
else if((h1==0)&&(h2==0)&&(h3==0)&&(h4==1))
{right1();}
else if((h1==1)&&(h2==0)&&(h3==1)&&(h4==1))
{run1();}
else if((h1==1)&&(h2==1)&&(h3==0)&&(h4==0))
{left1();}
else if((h1==1)&&(h2==0)&&(h3==0)&&(h4==0))
{left1();}
else if((h1==1)&&(h2==1)&&(h3==1)&&(h4==0))
{left1();}
}
void PWM_out_right(void) //右PWM
{
if(PWM_moto_right<=right_moto)
{EN1=1;EN4=1;}
else {EN1=0;EN4=0;}
if(PWM_moto_right>=20)
PWM_moto_right=0;
}
void PWM_out_left(void) //左PWM
{
if(PWM_moto_left<=left_moto)
{EN2=1;EN3=1;}
else {EN2=0;EN3=0;}
if(PWM_moto_left>=20)
PWM_moto_left=0;
}
void main(void)
{
TIM0init();
Timer2Init();
UartInit();
while(1)
{
switch(temp)
{
case '0':csb();send(temp);DelayMs(1000);break;
case '1':run2();;send(temp);DelayMs(1000);break;
case '2':run3();send(temp);DelayMs(1000);break;
case '3':back1();send(temp);DelayMs(1000);break;
case '4':back2();;send(temp);DelayMs(1000);break;
case '5':right1();send(temp);DelayMs(1000);break;
case '6':stop();send(temp);DelayMs(1000);break;
case '7':left1();send(temp);DelayMs(1000);break;
case '8':left2();send(temp);DelayMs(1000);break;
case '9':Track();send(temp);DelayMs(1000);break;
}
}
}
void TIM0init(void) //定时器0
{
TMOD = 0x01;//定时器0工作方式1
TH0=0x00;
TL0=0x00;
ET0=1;
TF0=0;
EA=1;
}
void Timer0_isr(void) interrupt 1 //定时器0子程序
{
ECHO=0;
}
void Timer2Init(void) //定时器2
{
RCAP2H=(0xFFFF-100)/256;
RCAP2L=(0xFFFF-100)%256;
TH2=RCAP2H;
TL2=RCAP2L;
T2CON=0;
EA=1;
ET2=1;
TR2=1;
}
void Timer2_isr(void) interrupt 5
{
TF2=0;
++PWM_moto_right;
++PWM_moto_left;
PWM_out_right();
PWM_out_left();
}
void UartInit(void) //串口通讯+定时器1 9600bps 11.0592MHz
{
SCON = 0x50; //8位数据,可变波特率
TMOD = 0x20;
PCON &= 0x7f;
TH1=TL1=0xFD;
TI=0;
RI=0;
ES=1;
ET1=0;
TR1 = 1; //启动定时器1
}
void ckinit(void) interrupt 4
{
if(RI==1)
{
RI=0;
temp=SBUF;
}
}
void send(uchar a)
{
TI=0;
SBUF=a;
while(TI==0);
TI=0;
}
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