/*!
    \file  readme.txt
    \brief description of the ADC regular channel with DMA
*/

/*
    Copyright (C) 2017 GigaDevice

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

  This demo is based on the GD32F30x-EVAL board, it shows how to
use the ADC to convert analog signal to digital data through DMA. The ADC is 
configured in continuous mode, PA3 is chosen as analog input pin.
  
  As the ADC convertion begins by software, the converted data from ADC_RDATA 
register to SRAM begins continuously. Users can change the VR4 on the GD32F30X-EVAL
board, measure TP7 pad board, and check if its value matches the converted 
data through the watch window.

  The analog input pin should configured to AIN mode.
  