Developer Portal | A-GPS SUPL Motorola server

Submitted by Herbert De Jong on October 8, 2009 - 10:14am

Assumed Answered

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jive-migrated

1) Time/Date 8th Oct 2009 2:00 pm

2) Response time 1 day

3) Product MC55 MC75

4) OS Version OEM 35

5) Clarify Case # 1987055

two questions
1) MC55 MC75 both are advertised as A-GPS capable by Marketing and in Datasheet.
EMDK refers to SUPL server.
MC75 it was announced that post Rev A SUPL would be supported.
( internally there was some test server available as i now )

Q. When will there be a public SUPL server available.?
for testing or for real life SUPL supporting our devices ?

2) Guidance for developing a "Unattended Mode" application which will continously get GPS date from the GPS port , which at the same time minimalizes battery life.

Q2 is there such a guidance or do we know if the following is supported:

use CeRunAppAtTime() invoking SystemIdleTimerReset() every minute to prevent the device to suspendIs

see here http://blogs.msdn.com/raffael/archive/2008/07/22/power-efficient-applications-on-windows-mobile.aspx

May 4, 2019 - 9:33am

Herbert De Jong

Bump is this the correct

Bump
is this the correct place to ask these 2 questions ?

Vote:

May 4, 2019 - 9:33am

Herbert De Jong

with help of PM i recieved

with help of PM i recieved part of the answers just sharing what we know now:

Q1 A-GPS SUPL
Gary Still confirms:

Motorola SUPL is ready now for trials.
We will be formally releasing it in the MC75A when it launches and adding it to MC9500 at their next SW release.
IN addition MPA1.5 based products will have it at their next maintenance release.

Q2 Unattended Mode
Jamie Epshteyn advices following
I don't believe our devices support unattended mode.
The recommended approach to save power or make the device look like it is suspended while getting GPS data is to turn off the screen.
You may want to post this question on dev central to get a wider audience.

Vote:

May 4, 2019 - 9:33am

Anonymous (not verified)

Herbert, If you want to turn

Herbert,

If you want to turn off the screen completely you can use the following key:

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Power\State\BacklightOff\{EB91C7C9-8BF6-4a2d-9AB8-69724EED97D1}]
"Default"=dword:00000004

This will make the display power follow the backlight power so whatever timeout you set for the backlight will cause the display to power off

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May 4, 2019 - 9:33am

Herbert De Jong

thanks John,But from an

thanks John,

But from an earlier thread here in CIC forums we found that Unattended mode works on MC55 or MC75.

https://devcentral.symbol.com/shwmessage.aspx?ForumID=245&MessageID=16093

also adding a sample app which shows that.

But it looks like the GPS driver in MC55 and MC75 doesnt support this unattended mode,

can somebody comment on that ?

Vote:

May 4, 2019 - 9:33am

Hirokazu Haga

Unatteded state, or D2 state

Unatteded state, or D2 state for our device, is a transition state between full power to suspended state. Windows CE uses it to do some house cleaning at midnight but no one else. All our drivers work only in D0, full power state, and do not work in D2 state. That is why we had an issue that MC70/75 failed to wake up and answer the incoming call during suppend. This was because the device was in D2 state (RTC caused it to go into D2 while the device was suspended, D3). For GPS driver to work, the device must also be in D0 state, but the screen can be off to save power.

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A-GPS SUPL Motorola server