/*!
    \file  readme.txt
    \brief description of the calendar alarm example
    
    \version 2025-08-01, V1.0.0, firmware for gd32c2x1
*/

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  This example is based on the GD32C231C-EVAL-V1.0 board, it explains how 
to configure the RTC module. In this demo, RTC peripheral is configured to keep
time and generate an alarm interrupt.
  
  The RTC clock source can be chose to LXTAL by uncomment the corresponding 
define in init file. And the HyperTerminal should be connected to the evaluation 
board via USART.
  
  In this example, the default configuration sets the current time to 18:18:00 and 
the alarm time to 18:19:00. Additionally, users can customize their desired clock and 
alarm settings.LED1 will stay constantly lit. When the alarm time is reached,the LED1 
will be toggled.
  
  Reset and Then LED1 is turned on.
  
  The RTC module is not reset by the system reset . 
  
  When the alarm interrupt generated, the LED1 toggled. The alarm is configured to 
occur once per minute.
