查看PinMode()的源代碼

void pinMode (uint8_t pin, uint8_t mode)
</pre>
設(shè)置引腳模式<br>

配置引腳為輸出或輸出模式.<br>

參數(shù):<br>
*pin 	引腳編號(hào)
*mode: INPUT, OUTPUT, 或 INPUT_PULLUP.

例子:<br>
<pre style="color:green">
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
}
</pre>

注解:<br>
*模擬引腳也可以當(dāng)作數(shù)字引腳使用, 編號(hào)為14(對(duì)應(yīng)模擬引腳0)到19(對(duì)應(yīng)模擬引腳5).