Windows CE上的GPS电源管理 [英] GPS power management on windows ce

问题描述

大家好！
我正在开发一个获取GPS数据的程序，并使用了Microsoft的GPS库.
我的问题是，当设备进入睡眠模式时，GPS设备会在7分钟内获得相同的位置，然后又没有获得任何位置，
为了解决这个问题，我使用了以下代码:

hello to every body
I`m developing a program that get the GPS data and i used the GPS library of Microsoft.
My problem is when the device into the sleep mode, the GPS device get the same position for 7 minute and then does not get any position,
for solve this i used this code :

<br />
<pre lang="cs">CoreDLL.PowerPolicyNotify(PPNMessage.PPN_UNATTENDEDMODE, -1);<br />
 const int POWER_NAME = 0x00000000;<br />
 int notify = CoreDLL.DevicePowerNotify(GpsDeviceName, CEDEVICE_POWER_STATE.D0, POWER_NAME);<br />
 IntPtr power = CoreDLL.SetDevicePower(GpsDeviceName, DevicePowerFlags.POWER_NAME, CEDEVICE_POWER_STATE.D0);<br />
<br />
<br />
</pre>

和此代码:

and this code:

<br />
CEDEVICE_POWER_STATE state = CEDEVICE_POWER_STATE.D0;<br />
 CoreDLL.GetDevicePower(GpsDeviceName, DevicePowerFlags.POWER_NAME, out state);<br />
 CoreDLL.SetPowerRequirement(GpsDeviceName, CEDEVICE_POWER_STATE.D0,<br />
              DevicePowerFlags.POWER_NAME | DevicePowerFlags.POWER_FORCE,<br />
              IntPtr.Zero, 0);<br />
 <br />

但这可以在HTC touch2和acer E101，s200和Xperia和.....
中使用 但不适用于HTC HD2，...，
我该怎么办?


请帮忙..
谢谢

but this work in HTC touch2 and acer E101,s200 and Xperia and .....
but doesn`t work on HTC HD2,,,,
What can i do??


Please Help..
Thanks

推荐答案

我必须使用此代码来解决此问题...:

I have to use this code for solve this... :

<br />
CoreDLL.SetSystemPowerState(null, PowerState.POWER_STATE_ON, DevicePowerFlags.POWER_NAME);<br />

我找到了解决方案....

当我从以下键中删除IClass字符串时:

[HKEY_LOCAL_MACHINE \ Drivers \ BuiltIn \ GPSID]
IClass = {A32942B7-920C-486b-B0E6-92A702A99B35};

[HKEY_LOCAL_MACHINE \ Drivers \ BuiltIn \ gpsdriver]
IClass = {A32942B7-920C-486b-B0E6-92A702A99B35};



并能很好地工作！！！！！

I found a solution....

When I deleted the IClass string out of the following keys:

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\GPSID]
IClass={A32942B7-920C-486b-B0E6-92A702A99B35};

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\gpsdriver]
IClass={A32942B7-920C-486b-B0E6-92A702A99B35};



and work very well!!!!

这篇关于Windows CE上的GPS电源管理的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！