PinMode()
void pinMode (uint8_t pin, uint8_t mode)
设置引脚模式
配置引脚为输出或输出模式.
- 参数:
pin 引脚编号
mode: INPUT, OUTPUT, 或 INPUT_PULLUP.
- 例子:
int ledPin = 13; // LED connected to digital pin 13 void setup() { pinMode(ledPin, OUTPUT); // sets the digital pin as output } void loop() { digitalWrite(ledPin, HIGH); // sets the LED on delay(1000); // waits for a second digitalWrite(ledPin, LOW); // sets the LED off delay(1000); // waits for a second }
- 注解:
模拟引脚也可以当作数字引脚使用, 编号为14(对应模拟引脚0)到19(对应模拟引脚5).