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

/*
    Copyright (C) 2017 GigaDevice

    2014-12-26, V1.0.0, platform GD32F1x0(x=3,5)
    2016-01-15, V2.0.0, platform GD32F1x0(x=3,5,7,9)
    2016-04-30, V3.0.0, firmware update for GD32F1x0(x=3,5,7,9)
    2017-06-19, V3.1.0, firmware update for GD32F1x0(x=3,5,7,9)
*/

  This demo is based on the GD32150R-EVAL/GD32190R-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, PC1(GD32150R-EVAL) or PC0(GD32190R-EVAL) is chosen
as analog input pin. The ADC clock is configured to 12MHz(below 14MHz or 28MHz).
  As the AD convertion begins by software,the converted data from ADC_RDATA register
to SRAM begins continuously.Users can change the VR1 on the GD32150R-EVAL/GD32190R-EVAL
board,measure TP1(GD32150R-EVAL) or TP2(GD32190R-EVAL) pad board,and check if 
its value matches the converted data through the watch window.

  The analog input pin should configured to AN mode and the ADC clock should 
below 14MHz for GD32150R(28MHz for GD32190R-EVAL).
