2020-11-28

关于简单单片机循迹小车的入门过程
1.组装小车底板

2.安装相关元件

3.红外循迹原理图

4.烧录程序
#define P_IOA_Data (volatile unsigned int *)0x7000
#define P_IOA_Dir (volatile unsigned int *)0x7002
#define P_IOA_Attrib (volatile unsigned int *)0x7003

unsigned int scan();
unsigned int num=0;
void delay();

void init_1()
{
[P_IOA_Dir]=0x00f0;
[P_IOA_Attrib]=0x00f0;
[P_IOA_Data]=0x000f;
}
void init_2()
{
[P_IOA_Dir]=1;
[P_IOA_Attrib]=1;
[P_IOA_Data]=0;
}
void main()
{
while(1)
{
void init_1();
num=scan();
void init_2();
switch(num)
{
case 1:
{
while(1)
{
[P_IOA_Data]=0x9f;
delay(500);
if([P_IOA_Data]==1)
break;
}
}
case 2:
{
while(1)
{
[P_IOA_Data]=0x9f;
delay(500);
break;
}
}
case 4:
{
while(1)
{
[P_IOA_Data]=0x6f;
delay(500);
break;
}
}
case 5:
{
while(1)
{
[P_IOA_Data]=0x6f;
delay(500);
break;
}
}
case 0:
{
while(1)
{
[P_IOA_Data]=0x5f;
delay(500);
break;
}
}

}
[P_IOA_Data]=0x5f;
delay(500);

}
}

void delay(uint z)
{
uint x,y;
for(x=z;x>0;x–)
for(y=110;y>0;y–);
}
unsigned int scan()
{
if(P_IOA_Data0xfe)
{
num=1;
return num;
}
if(line_2




0xfd)
{
num=2;
return num;
}

if(line_40xfb)
{
num=4;
return num;
}
if(line_5




0xf7)
{
num=5;
return num;
}
return 0;
}

5.运行小车

以上均为初步入门，如有错误感谢指点。