/*!
\file readme.txt
\brief description of the ADC test demo
*/
\version 2019-02-19, V1.0.0, firmware for GD32E230x
*/
/*
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*/
This demo is based on the GD32E230C-EVAL-V1.1 board, it shows how to configure the
ADC peripheral to convert the analog signal to digital data. PA2(channel2) is chosen
as analog input pin. The ADC clock is configured to 12MHz. The CH0 event of TIMER0(the
frequence is 120kHz) is used as the trigger source of ADC. So the conversion frequence
of ADC is also 120kHz.
The converted data in the ADC_RDATA register is moved into SRAM(through DMA).
The analog input pin PA2 should configured to analog mode. The users can change the
VR1 on the GD32E230C-EVAL-V1.1 board, and the LCD will display the ADC convert values
with a voltage curve. The curve adjusts with the analog input.
