handle BTN with interrupt

main/localbtn.h

@@ -1,6 +1,6 @@
 /**
  * @file localbtn.h
- * @brief Local GPIO0 BTN reading implementation using edge capture
+ * @brief Local GPIO button reading using interrupt-based edge detection
  */
 
 #ifndef LOCALBTN_H
@@ -17,19 +17,20 @@
 typedef void (*localbtn_mode_change_callback_t)();
 
 /**
- * @brief Initialize local btn reading
+ * @brief Initialize local button with interrupt-based detection
+ * @param pin_localbtn GPIO pin number for button (active low)
  * @return ESP_OK on success
  */
 esp_err_t localbtn_init(int8_t pin_localbtn);
 
 /**
- * @brief Deinitialize local btn reading
+ * @brief Deinitialize local button reading
  */
 void localbtn_deinit(void);
 
 /**
  * @brief Register callback for mode changes
- * @param callback Callback function
+ * @param cb Callback function
  */
 void localbtn_register_callback(localbtn_mode_change_callback_t cb);