void setup() { pinMode(13, OUTPUT); // sets the digital pin 13 as output } void loop() { digitalWrite(13, HIGH); // sets the digital pin 13 on delay(1000); // waits for a second digitalWrite(13, LOW); // sets the digital pin 13 off delay(1000); // waits for a second ...
pinMode (CS , OUTPUT) ; // initialising 10 pin as output pin pinMode (A0, INPUT) ; // initialising pin A0 as input pin SPI.begin() ; // this begins Serial peripheral interfece Serial.begin(9600) ; // this begins serial communications between arduino and ic. } void loop() { for(...
void loop() { digitalWrite(13, HIGH); // sets the digital pin 13 on delay(1000); // waits for a second digitalWrite(13, LOW); // sets the digital pin 13 off delay(1000); // waits for a second } 注意事项和警告 模拟输入引脚可以用作数字引脚,称为A0、A1等。例外的是Arduino Nano、P...
ADC0-ADC5 其实是作为 PC0-PC5 的第二功能存在的,分别对应 Arduino 定义 A0-A5。也正因为次,在Arduino 的官方指南中提到,“The analog input pins can be used as digital pins, referred to as A0, A1, etc. ”。说的是,模拟输入口可以当数字口一样用。对于A0-A5来说,确实不错。但对于第一功能就...
也正因为次,在 Arduino 的官方指南中提到,“The analog input pins can be used as digital pins, referred to as A0, A1, etc. ”。说的是,模拟输入口可以当数字口一样用。对于A0-A5来说,确实不错。但对于第一功能就是ADC(模数转换)而不兼有普通 IO 口功能的 ADC6 和 ADC7 来说。这句话就要打...
pinMode(A0,OUTPUT);digitalWrite(A0,HIGH); 1. 2. 3. 上拉电阻 模拟引脚也有和数字引脚一样的内置上拉电阻。通过下列代码激活模拟引脚内部的上拉电阻。 digitalWrite(A0, HIGH); // 将上拉电阻激活。(这与普通的输入引脚有点区别) 但是激活了上拉电阻后,再用analogRead()的话,读出的值会受到影响。
These pins can act as either inputs or outputs, meaning they can control a circuit or measure it. Next to the power connections are the Analog input pins, labeled A0-A5. These pins are used to make analog measurements of sensors or other components. Analog inputs are especially good for...
Tutorial/BuiltInExamples/AnalogInput*/intsensorPin=A0;// select the input pin for the potentiometerintledPin=13;// select the pin for the LEDintsensorValue=0;// variable to store the value coming from the sensorvoidsetup(){// declare the ledPin as an OUTPUT:pinMode(ledPin,OUTPUT);}void...
模拟输入引脚由标记为A0-A5的6个母头引脚组成。这些引脚可用于测量与其相连的电压电平。例如,湿度传感器输出,距离传感器输出或温度传感器输出等。 5。数字输入/输出引脚 数字输入/输出(I/O)引脚由18个母头引脚组成,分为两部分。其中的前14个标记为0-13的是数字I/O引脚,名称中带有波浪号(〜)的可以设置为PWM输...
// initialize digital pin LED_BUILTIN as an output. pinMode(LED_BUILTIN, OUTPUT); } // the loop function runs over and over again forever void loop() { digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level) ...