这段代码会使STM32 Nucleo板上的内置LED每隔一秒闪烁一次。 4. ESP32(基于ESP32芯片) ESP32是Espressif Systems推出的一款具有Wi-Fi和蓝牙功能的单片机。 点亮LED的代码(使用Arduino IDE): #define LED_BUILTIN 2 // ESP32的内置LED通常连接到GPIO2 void setup() { pinMode(LED_BUILTIN, OUTPUT); } void ...
ESP32闪灯程序 效果:LED灯一亮一灭间隔为1s。 #include <Arduino.h> // Set LED_BUILTIN if it is not defined by Arduino framework #define LED_BUILTIN 4 // 白色LED对应针脚 void setup() { // initialize LED digital pin as an output. pinMode(LED_BUILTIN, OUTPUT); } void loop() { //...
pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster pinMode (13,OUTPUT); //Declare the in-built LED pin as output } 在“我的广告设备回调”功能中,我们打印行将列出发现的BLE设备的名称和其他信息。我们需要发现的BLE设备的硬件ID,以便我们可以将其与所需的设备进行...
WiFiServer server(80); void setup() { //在板载的led针脚置为输出 pinMode(LED_BUILTIN, OUTPUT); //打开串口并把波特率设置成115200,注意串口监视器的波特率要与这个一致。 Serial.begin(115200); Serial.println(); Serial.println("Configuring access point..."); //softAP函数用来配置WiFi AP WiFi....
constintLED =2; voidsetup(){ // initialize digital pin LED_BUILTIN as an output. pinMode(LED, OUTPUT); } // the loop function runs over and over again forever voidloop(){ digitalWrite(LED, HIGH);// turn the LED on (HIGH is the voltage level) ...
https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink */ // the setup function runs once when you press reset or power the board void setup() { // initialize digital pin LED_BUILTIN as an output. //初始化芯片上led灯的输出,这里的LED_BUILTIN就是内部led灯的gpio的别名,第二个参数指明...
下面写一个基本的程序,来点亮开发板上的LED #include<Arduino.h> voidsetup(){ pinMode(LED_BUILTIN, OUTPUT);//设置引脚为输出状态,LED_BUILTIN在库中已经定义好了,为板载LED的宏定义 } voidloop(){ digitalRead(LED_BUILTIN) ==0?digitalWrite(LED_BUILTIN, HIGH) :digitalWrite(LED_BUILTIN, LOW); ...
ESP32-CAM 有一个与 GPIO33 连接的内置LED。因此,相应地更改 Blink 草图: #define LED_BUILT_IN 33 void setup() {pinMode(LED_BUILT_IN, OUTPUT); // Set the pin as output } // Remember that the pin work with invertedlogic// LOW to Turn on and HIGH to turn off void loop() { digital...
Some LEDs have a built-in resistor, so there is no need to use a resistor for them. ESP32 - LED The ESP32's digital output pin's voltage can be programmed to VCC or GND. By connecting the digital output pin to LED, we can programmatically control the LED's state.Wiring...
● 蓝色LED灯：模块上的蓝色LED连接到GPIO引脚。可通过编程开启或关闭。●I/O引脚：与ESP8266不同...