/*!
\file readme.txt
\brief description of wakeup from deepsleep mode by RTC alarm demo
\version 2021-10-30, V1.0.0, firmware for GD32W51x
*/
/*
Copyright (c) 2021, GigaDevice Semiconductor Inc.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
This demo is based on the GD32W515P-EVAL-V1.0 board, it explains how to configure the
RTC module to wake up MCU from deepsleep and feed dog in RTC alarm interrupt.Select
RCU_IRC32K as RTC and FWDGT clock source. The RTC alarm interval is 2s and the FWDGT
timeout is configured as 8s.
After start-up, the LED1 is off, the LED2 is on. After 2 seconds, LED2 is off and the
mcu enters deepsleep mode. MCU is wake up by RTC alarm every 2 seconds. After wakeup, LED1
is toggled, then MCU enters deepsleep mode again.