如何读取和写入没有引脚号的gpio引脚？ [英] How to read and write to the gpio pin without pin number?
问题描述
大家好，
我使用DragonBoard 410c。我想通过写"低"关闭iot操作系统。到APQ_PS_HOLD（E36）引脚，它是cpu的引脚。这是否可以关闭windows 10 iot core os？
I use the DragonBoard 410c. I want to shut down the iot os by write "low" to the APQ_PS_HOLD (E36) pin which is the pin of the cpu. Does this can shut down the windows 10 iot core os?
APQ_PS_HOLD（E36）连接到PS_HOLD，它是PMIC8916的引脚。但似乎APQ_PS_HOLD（E36）没有密码。如何读取和写入此引脚？
The APQ_PS_HOLD (E36) connect to the PS_HOLD which is the pin of the PMIC8916. But it seems that the APQ_PS_HOLD (E36) have no pin number. How to read and write this pin?
所有图片均参考pdf文件，可在此处下载：
All the picture are refer to the pdf files which can be download here:
https：//开发人员.qualcomm.com / hardware / snapdragon-410 / tools
https://developer.qualcomm.com/hardware/snapdragon-410/tools
祝你好运。
推荐答案
Hello moyanming，
Hello moyanming,
来自
Windows IoT Dragonboard核心针脚映射，没有PS_HOLD（E36）。
From Windows IoT Core pin mapping of Dragonboard, there is no PS_HOLD(E36).
来自
DragonBoard 410c G PIO引脚分配文档，PS_HOLD（E36）是PMIC的电源保持信号，其类型为DO（输出）。
And from DragonBoard 410c GPIO Pin Assignment document, PS_HOLD(E36) is power supply hold signal to PMIC, its type is DO(output).
因此您可能无法写入此PIN。
So you may not write this PIN.
如果要关闭Windows IoT核心版设备，可以使用UWP api ShutdownManager 。只需一行代码：
If you want to shut down Windows IoT Core device you can using UWP api ShutdownManager. Just one line code like this:
ShutdownManager.BeginShutdown(ShutdownKind.Shutdown, System.TimeSpan.FromSeconds(1));
要在UWP中使用ShutdownManager来管理设备的关闭，您需要：
To use ShutdownManager in UWP to manages the shutdown of devices, you need:
- 参考Windows IoT Extension SDK（v10.0.10240.0或更高版本）
- 将以下内容添加到应用程序Package.appmanifest：< iot：Capability Name =" ; systemManagement" />
- 添加此名称空间：使用Windows.System;
最佳问候，
Rita
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