/*!
    \file  readme.txt
    \brief description of the low voltage detector demo
*/

/*
    Copyright (C) 2017 GigaDevice

    2017-02-10, V1.0.0, firmware for GD32F30x
*/

  This example is based on the GD32F30x-EVAL board, it shows how to use low voltage detector. 
If VDD/VDDA is higher or lower than the LVD threshold, then a lvd event will occur. The event
is internally connected to the EXTI line 16 and can generate an interrupt if enabled through
the EXTI registers. Use external power connect 3.3v pin and GND pin of the board , adjust 
voltage higher or lower than the LVD threshold 3.1v, LED1 will toggle.
 