LampControler/src/LightControl.cpp

// LightControl.cpp

#include "LightControl.h"
#include "Arduino.h"

LightControl::LightControl(BH1750& sensor, DS3502& pot)
    : lightSensor(sensor), digitalPot(pot) {}

void LightControl::setTargetLight(float target) {
    targetLightLevel = target;
}

float LightControl::getCurrentLight() {
    return lightSensor.readLightLevel();
}

void LightControl::runUntilTargetReached(float target, int maxAttempts) {
    const float tolerance = 100.0f;  // 容许误差范围（±100 lux）
    float currentLight;
    float res;

    int attempt = 0;
    const int max_retries = maxAttempts;  // 最大尝试次数，防止死循环

    do {
        currentLight = getCurrentLight();
        res = target - currentLight;

        if (abs(res) <= tolerance) {
            Serial.println("Target reached.");
            break;
        }

        int lastWiperValue = digitalPot.getWiper();

        if (res > 0) {
            // 需要增加亮度 -> 增加电位器阻值
            if (lastWiperValue <= 127) {
                lastWiperValue++;
            }
        } else if (res < 0) {
            // 需要减少亮度 -> 减少电位器阻值
            if (lastWiperValue > 0) {
                lastWiperValue--;
            }
        }

        digitalPot.setWiper(lastWiperValue);
        Serial.printf("Current light: %.0f, Target: %.0f, Res: %.0f, Wiper: %d\n", currentLight, target, res, lastWiperValue);
        delay(200);  // 等待响应,必要！！

        attempt++;

        // 超出最大尝试次数退出
        if (attempt >= max_retries) {
            Serial.println("Max attempts reached. Exiting...");
            break;
        }

    } while (true);
}