对于Arduino，用pinMode将IO口设为OUTPUT的时候，其实IO的状态为“强推挽”，也就是说设为高电平时，I...
pinMode(slaveSelectPin, OUTPUT); pinMode(增加,输入); pinMode(减少,输入); pinMode(current_sense,输入); pinMode(电压感应,输入); // 初始化 SPI: SPI.begin(); //设置LCD的列数和行数: lcd.begin(16, 2); // 向 LCD 打印一条消息。 lcd.print("数字负载"); lcd.setCursor(0, 1); lcd....
// initialize the pushbutton pin as an input: pinMode(button1Pin, INPUT); pinMode(button2Pin, INPUT); // initialize the relay pin as an output: pinMode(relay1Pin, OUTPUT); pinMode(relay2Pin, OUTPUT); } void loop(){ // read the value from the sensor: sensorValue =analogRead(senso...
intMODE_BUTTON =6;41intmode =0;//0: 关机; 1: 长亮; 2: blink42boolean lastButton_mode =LOW;43boolean currentButton_mode =LOW;4445voidsetup()46{47pinMode(BLED, OUTPUT);48pinMode(GLED, OUTPUT);49pinMode(RLED, OUTPUT);50pinMode(R_BUTTON, INPUT);51pinMode(G_BUTTON, INPUT);52pinMo...
/* * State change detection: 检测按键按下的状态并累计次数 */ // 定义端口 const int ledPin = 13; const int buttonPin = 2; // 设置变量 int currentButtonState = 0; int lastButtonState = 0; int count = 0; void setup() { // 初始化端口 pinMode(ledPin, OUTPUT); pinMode(buttonPin...
void setup() { pinMode(11, OUTPUT); analogWrite(11, 127); //Operates at a reduced voltage and current. } I connected a small LED to pin 11 to see the results of the above PWM code sample. As expected, it operates at a reduced brightness due to the lower voltage. The ‘127’ is...
const int ledPin = LED_BUILTIN; int ledState = LOW; unsigned long previousMillis = 0; const long interval = 1000; void setup() { pinMode(ledPin, OUTPUT); } void loop() { unsigned long currentMillis = millis(); if (currentMillis - previousMillis >= interval) { ...
通过pinMode()函数,你可以将Arduino的引脚配置为以下三种模式: 1、输出(OUTPUT)模式 2、输入(INPUT)模式 3、输入上拉(INPUT_PULLUP)模式 (仅支持Arduino 1.0.1以后版本) 在输入上拉(INPUT_PULLUP)模式中,Arduino将开启引脚的内部上拉电阻,实现上拉输入功能。一旦将引脚设置为输入(INPUT)模式,Arduino内部上拉电阻...
#define ANALOG_PIN A0 #define OLED_RESET -1 // 重置引脚 #(如果共享 Arduino 重置引脚,则为 -1) Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); doublevImag[SAMPLES]; doublevReal[SAMPLES]; unsignedlongsampling_period_us; ...
pinMode(ledPin, OUTPUT); } void loop() { byte brightness; // check if data has been sent from the computer: if (Serial.available()) { // read the most recent byte (which will be from 0 to 255): brightness = Serial.read(); ...