/**
  **************************************************************************
  * @file     readme.txt
  * @brief    readme
  **************************************************************************
  */

  this demo is based on the at-start board, in this demo, shows how to exit
  deepsleep mode by interrupt of ertc tamper.
  
  the rising edge on pc13 will wake up deepsleep mode

  for more detailed information. please refer to the application note document AN0100.
