arduino循迹小车

void loop()
{
//状态:LOW 没有识别到黑线,HIGH识别到黑线
if(digitalRead(left_led1) == HIGH && digitalRead(right_led1) == HIGH)
{
forward();//当左右探头识别到黑线执行前进
}
else
{
if(digitalRead(left_led1) == HIGH && digitalRead(right_led1) == LOW)
{
left();//右边出线，执行左转修正
}
if(digitalRead(left_led1) == LOW && digitalRead(right_led1) == HIGH)
{
right();//左边出线，执行右转修正
}
if(digitalRead(left_led1) == LOW && digitalRead(right_led1) == LOW)
{
backward();//后退，左右寻迹探头都没识别到黑线
}
}
}