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样例使用说明
Sample Description
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功能描述:
此样例演示了stop模式下, GPIO外部中断唤醒功能。
Function descriptions:
This sample demonstrates the GPIO external interrupt wake-up feature in stop mode.
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测试环境:
测试用板: PY32F403_STK
MDK版本: 5.28
IAR版本: 9.20
GCC版本: GNU Arm Embedded Toolchain 10.3-2021.10
Test environment:
Test board: PY32F403_STK
MDK Version: 5.28
IAR Version: 9.20
GCC Version: GNU Arm Embedded Toolchain 10.3-2021.10
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使用步骤:
1. 编译下载程序到MCU, 并运行;
2. LED灯亮, 按下按键, LED灯灭, 进入stop模式;
3. 在PA06上产生一个下降沿, 程序退出stop模式;
4. LED以500ms的间隔进行翻转。
Example execution steps:
1. Compile and download the program to the MCU and run it;
2. The LED will be on initially. Press the button, and the LED will turn off,
entering stop mode;
3. Generate a falling edge on PA06, and the program will exit stop mode;
4. The LED will toggle at intervals of 500ms.
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注意事项:
1, 演示此样例功能时需要断开swd连接线并重新上电, 因为默认情况下, 仿真器会把
DBGMCU_CR.DBG_STOP置位。
Notes:
1.To demonstrate this sample function, it is necessary to disconnect the SWD
cable and power it back on, as by default, the emulator will reset the
DBGMCU_CR.DBG_STOP position.
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