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#define LED ( 13 )
#define MOTOR\_PIN0 ( 8 )
#define MOTOR\_PIN1 ( 9 )
#define MOTOR\_PIN2 ( 10 )
#define MOTOR\_PIN3 ( 11 )
#define KEY ( 4 )
static unsigned char Speed = 110;//初始速度值
unsigned char keyFlag = 0 ;//按键状态
void Add()
{
Speed +=10;
if(Speed > 250) Speed =250;//最大值
}
void Sub()
{
Speed -=10;
if(Speed < 100) Speed =110;//最小值
}
void setup()
{
pinMode( LED, OUTPUT );
pinMode( MOTOR_PIN0, OUTPUT );
pinMode( MOTOR_PIN1, OUTPUT );
pinMode( MOTOR_PIN2, OUTPUT );
pinMode( MOTOR_PIN3, OUTPUT );
pinMode(2, INPUT_PULLUP);
pinMode(3, INPUT_PULLUP);
pinMode(KEY, INPUT_PULLUP);
attachInterrupt(0, Add, FALLING); //外部中断号 0，接引脚IO 2,触发方式：高电平变为低电平触发(下降沿触发)
attachInterrupt(1, Sub, FALLING); //外部中断号 1，接引脚I0 3,触发方式：高电平变为低电平触发(下降沿触发)
}
void loop()
{
static unsigned char i = 0;
unsigned char ButtonState = digitalRead(KEY);
if(ButtonState == 0){//检测到有按键按下
delay(10);//消抖处理
if(ButtonState == 0){//确认按键被按下
keyFlag = 1 - keyFlag ;
while(!digitalRead(KEY));//等待按键被释放抬起
}
}
if(keyFlag){ //这里可以填写控制代码
switch( i++ )//这里改成i--就是反转
{
case 0:
digitalWrite( MOTOR_PIN0, HIGH );
digitalWrite( MOTOR_PIN1, LOW );
digitalWrite( MOTOR_PIN2, LOW );
digitalWrite( MOTOR_PIN3, LOW );
digitalWrite( LED, HIGH );
break;
case 1:
digitalWrite( MOTOR_PIN0, LOW );
digitalWrite( MOTOR_PIN1, HIGH );
digitalWrite( MOTOR_PIN2, LOW );
digitalWrite( MOTOR_PIN3, LOW );
digitalWrite( LED, LOW );
break;
case 2:
digitalWrite( MOTOR_PIN0, LOW );
digitalWrite( MOTOR_PIN1, LOW );
digitalWrite( MOTOR_PIN2, HIGH );
digitalWrite( MOTOR_PIN3, LOW );
digitalWrite( LED, HIGH );
break;
case 3:
digitalWrite( MOTOR_PIN0, LOW );
digitalWrite( MOTOR_PIN1, LOW );
digitalWrite( MOTOR_PIN2, LOW );
digitalWrite( MOTOR_PIN3, HIGH );
digitalWrite( LED, LOW );
break;
default:
break;
}
delay(Speed);//此数值必须大于100，否则仿真的时候会抖动 .
i %=4;
}else{
//这里可以填写其他控制代码
digitalWrite( MOTOR_PIN0, LOW );
digitalWrite( MOTOR_PIN1, LOW );
digitalWrite( MOTOR_PIN2, LOW );
digitalWrite( MOTOR_PIN3, LOW );
digitalWrite( LED, HIGH );
}
}
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