text: /**
  * @file
  * @author  Lluc Pares
  * @date    18/01/2018
  * @brief   ESP8266 debugging method
  *
  * API used for debugging with ESP8266. To make sure the device
  * hasn't crashed
  **/
  
  #include "user_interface.h"
  
  /**
   * @brief Method used for debugging. Blinks LED in GPIO2 to
   * make sure we can make sure esp8266 is active.
   */
  static void ICACHE_FLASH_ATTR blink_cb(void *arg);
  
  void ICACHE_FLASH_ATTR init_debug_blink();