/*!
    \file    readme.txt
    \brief   description of USART transmit and detect break frame

    \version 2025-02-20, V1.4.0, demo for GD32E502
*/

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*/

  This demo is based on the GD32E502V-EVAL-V1.0 board, it shows how to use USART to transmit and 
detect break frame. Firstly, LED1 and LED2 flash 1 time for test. If the Tamper key is pressed, 
USART0 send a break frame and LED1, LED2 will be toggled. If the Wakeup key is pressed, USART1 
send a break frame and LED1, LED2 will be toggled.
  LIN0 and LIN1 must be powered by 12V, and connect the LINs of JP12 and JP13 together.
