feat(platform): add PWM backlight brightness control

2026-08-20 18:21:06 +08:00
parent 0542aadaa4
commit 988dc924b9
7 changed files with 113 additions and 5 deletions
@@ -452,6 +452,15 @@ esp_err_t platform_multimodal_audio_register_downstream_playback_callbacks(

 esp_err_t platform_init_lcd_device(void);

+/**
+ * @brief Set LCD backlight brightness using PWM.
+ *
+ * @param brightness_percent Brightness from 0 (off) to 100 (full).
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG outside the supported range,
+ *         or ESP_ERR_INVALID_STATE before LCD initialization.
+ */
+esp_err_t platform_lcd_set_backlight_brightness(uint8_t brightness_percent);
+
 /**
 * @brief Start LCD render loop.
 *