/*!
    \file    readme.txt
    \brief   description of calendar demo

    \version 2026-02-10, V1.4.0, demo for GD32A103V
*/

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  This demo is based on the GD32A103V-EVAL-V1.0 board, it explains how to configure 
the RTC module. In this demo, RTC peripheral is configured to display calendar.

  Select LXTAL as RTC clock source. And the HyperTerminal should be connected to the 
evaluation board via COM0.

  After start-up, get key value from BKP data register or bit RTCSRC in backup domain 
control register. If the value is correct, the program will ask to set the time on the Hyperterminal.
If the value is correct, by the Hyperterminal set time, the calendar will be displayed on the Hyperterminal.

  The RTC module is in the Backup domain, and is not reset by the system reset.

  JP13 and JP4 must be fitted to the EXMC port.

  JP23 must be installed a LCD device.
