12345678910111213141516171819202122232425262728293031323334353637383940 |
- /*!
- \file readme.txt
- \brief description of wakeup from standby by RTC alarm demo
- \version 2021-12-30, V1.0.0, firmware for GD32F30x
- */
- /*
- 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 GD32307C-EVAL-V1.1 board, it explains how to configure the
- RTC module to wakeup MCU from standby mode through RTC alarm interrupt.
- Select RCU_IRC40K as RTC clock source. The RTC alarm interval is configured as 3s.
- After start-up, the LED2~LED5 is on. After 2s, MCU enter standby mode, all LEDs turn
- off. After 3 seconds, MCU will be wakeuped from standby mode by RTC alarm interrupt, a
- power-on reset occurs and the MCU will execute instruction code from the 0x00000000 address.
|