/**
  **************************************************************************
  * @file     readme.txt 
  * @version  v2.0.0
  * @date     2021-11-26
  * @brief    readme
  **************************************************************************
  */

  this demo is based on the at-start board, executing this projectŁ¬step1/step2
  should be follow.
  step1 : enbale ap mode by icp tool. user should set boot memory to ap mode
          with icp tool.
  step2 : add the algorithm file of bootmem_ap in the project.
  step3 : executing this demo, in this project, codes in main block run usart
          for printing messages, while codes in boot memory run led toggle.



