iot增加屏幕背光亮度调节 (#150)

main/iot/things/blaklight.cc

@@ -0,0 +1,44 @@
+#include "iot/thing.h"
+#include "board.h"
+#include "display/lcd_display.h"
+
+#include <esp_log.h>
+
+#define TAG "Backlight"
+
+namespace iot {
+
+// 这里仅定义 Backlight 的属性和方法，不包含具体的实现
+class Backlight : public Thing {
+public:
+    Backlight() : Thing("Backlight", "当前 AI 机器人屏幕的亮度") {
+        // 定义设备的属性
+        properties_.AddNumberProperty("light", "当前亮度值", [this]() -> int {
+            // 这里可以添加获取当前亮度的逻辑
+            return current_brightness_;
+        });
+
+        // 定义设备可以被远程执行的指令
+        methods_.AddMethod("SetLight", "设置亮度", ParameterList({
+            Parameter("light", "0到100之间的整数", kValueTypeNumber, true)
+        }), [this](const ParameterList& parameters) {
+            auto display = Board::GetInstance().GetDisplay();
+            uint8_t target_brightness = static_cast<uint8_t>(parameters["light"].number());
+            int step = (target_brightness > current_brightness_) ? 1 : -1;
+            for (int brightness = current_brightness_; brightness != target_brightness; brightness += step) {
+                display->SetBacklight(static_cast<uint8_t>(brightness));
+                // 可以根据需要调整渐变速度，这里假设每次调整间隔 10 毫秒
+                vTaskDelay(pdMS_TO_TICKS(10)); 
+            }
+            display->SetBacklight(target_brightness);
+            current_brightness_ = target_brightness;  // 保存当前亮度值
+        });
+    }
+
+private:
+    int current_brightness_ = 100;  // 保存当前亮度值
+};
+
+} // namespace iot
+
+DECLARE_THING(Backlight);