Hello, Xiaozhi.

main/BuiltinLed.h

@@ -0,0 +1,33 @@
+#ifndef _BUILTIN_LED_H_
+#define _BUILTIN_LED_H_
+
+#include "led_strip.h"
+#include "freertos/semphr.h"
+#include "freertos/task.h"
+
+class BuiltinLed {
+public:
+    BuiltinLed();
+    ~BuiltinLed();
+
+    void BlinkOnce();
+    void Blink(int times, int interval_ms);
+    void TurnOn();
+    void TurnOff();
+    void SetColor(uint8_t r, uint8_t g, uint8_t b);
+    void SetWhite() { SetColor(128, 128, 128); }
+    void SetGrey() { SetColor(32, 32, 32); }
+    void SetRed() { SetColor(128, 0, 0); }
+    void SetGreen() { SetColor(0, 128, 0); }
+    void SetBlue() { SetColor(0, 0, 128); }
+
+private:
+    SemaphoreHandle_t mutex_;
+    TaskHandle_t blink_task_ = nullptr;
+    led_strip_handle_t led_strip_ = nullptr;
+    uint8_t r_ = 0, g_ = 0, b_ = 0;
+
+    void Configure();
+};
+
+#endif // _BUILTIN_LED_H_