点亮ESP 32 板载LED 灯
void setup() {// 初始化数字引脚 LED_BUILTIN 为输出模式pinMode(LED_BUILTIN, OUTPUT);// 初始化串口通信，波特率为9600Serial.begin(9600);
}void loop() {// 检查串口是否有数据可读if (Serial.available() > 0) {// 读取串口输入的数据String input = Serial.readString();// 将输入数据转换为大写（忽略大小写）input.trim();input.toUpperCase();// 根据输入指令控制LEDif (input == "ON") {digitalWrite(LED_BUILTIN, HIGH); // 开启LEDSerial.println("LED is ON");} else if (input == "OFF") {digitalWrite(LED_BUILTIN, LOW); // 关闭LEDSerial.println("LED is OFF");} else {Serial.println("Invalid command. Please enter 'ON' or 'OFF'.");}}
}开发板选中ESP S3 Dev Module
