如何用Java开发实现物联网硬件的光照控制功能

import com.pi4j.io.gpio.*;
import java.util.Scanner;

public class LightController {
   private static GpioPinDigitalOutput ledPin;
   
   public static void main(String[] args) {
      // 创建GPIO控制对象
      final GpioController gpio = GpioFactory.getInstance();
      // 设置LED（光源）对应的GPIO引脚
      ledPin = gpio.provisionDigitalOutputPin(RaspiPin.GPIO_01, "MyLED", PinState.LOW);
      
      // 控制台输入光照强度
      Scanner scanner = new Scanner(System.in);
      System.out.println("请输入光照强度（0-100）：");
      int brightness = scanner.nextInt();
      
      // 调整光照强度
      setBrightness(brightness);
      
      // 关闭GPIO并释放资源
      gpio.shutdown();
   }
   
   // 调整光照强度
   private static void setBrightness(int brightness) {
      // 范围检查
      if (brightness < 0 || brightness > 100) {
         System.out.println("光照强度超出范围！");
         return;
      }
      
      // 根据光照强度调节PWM信号的占空比
      int dutyCycle = (int) (1023 * brightness / 100);
      if (dutyCycle < 0) {
         dutyCycle = 0;
      } else if (dutyCycle > 1023) {
         dutyCycle = 1023;
      }
      // 输出PWM信号
      ledPin.setPwm(dutyCycle);
   }
}