December 2006 - Posts

• 802.11 WLAN WiFi : Power Mini FAQ - Windows CE

  Mini Frequently Asked Questions related to WLAN, Power, and Windows CE. Why is it important? WLAN can use significantly more power than other wireless technologies. For this higer battery consumption, you may get much higher performance. WLAN is not inherently Read More... Posted Thursday, December 14, 2006 11:16 AM by cenet | 8 Comments Filed under: Author: Kevin Chin

• 802.11 WLAN WiFi Power Golden Rule: Minimize Duty Cycle

  IEEE 802.11 WLAN, a.k.a. WiFi, is a dynamic technology being added to a number of CE devices. Increasingly, these devices are battery powered. Under these circumstances driver developers have to trade-off between POWER and PERFORMANCE. Making the wrong Read More... Posted Thursday, December 14, 2006 10:53 AM by cenet | 0 Comments Filed under: Author: Kevin Chin

• RTC 1.5 Useful registry Keys

  RTC Core Layer and SIP protocol keys Port manager related keys Key Path: HKLM\Comm\\RTC\\PortRange Key Value(s) Key Value Type Description Enabled DWORD Enables Port range as defined by subsequent port key values MinSipDynamicPort MaxSipDynamicPort DWORD Read More... Posted Friday, December 08, 2006 8:41 PM by cenet | 9 Comments Filed under: Author: Rajesh Khetan, Real Time Communication, RTC, VOIP

• GPS Poll Driver Sample

  I mention here that the information about the GPSID poll driver is now included in WinCE 6. If you are an OEM implementing a GPS driver on CE6 and you're not natively spitting out NMEA but would have to generate NMEA only for GPSID to parse, I'd highly Read More... Posted Thursday, December 07, 2006 8:47 AM by cenet | 12 Comments Filed under: Author: John Spaith

• So you really don't want your service unloaded?

  Suppose you have some service in services(d).exe on your CE device that is so critical that you don't anyone ever unloading it. This would be a paranoid play, since most users never mess around with loading and unloading services directly. But say that Read More... Posted Wednesday, December 06, 2006 11:48 AM by cenet | 0 Comments Filed under: Author: John Spaith

• GPSID versus Location Framework

  At some basic level, Windows CE's GPSID and Location Framework are doing the same thing. They're giving you the position of your device. I've had people ask me if with Location Framework if we were going to retire/deprecate/etc... GPSID. No. First, Location Read More... Posted Tuesday, December 05, 2006 11:27 AM by cenet | 2 Comments Filed under: Author: John Spaith

• Why was services.exe renamed to servicesd.exe in CE6.0?

  In CE 6.0, one of the things we changed was naming services.exe to be servicesd.exe. I mentioned it at the end of my CE6 services.exe initial post as to why we did this. Services.exe in CE6 is just a simple command line wrapper that lets you do things Read More... Posted Monday, December 04, 2006 8:16 AM by cenet | 0 Comments Filed under: Author: John Spaith

• Turning off the BSTR cache in Windows CE

  By default, whenever you use BSTRs OLE will keep the memory cached in order to aid performance. There are scenarios where you may want to disable this. First would be if you're on a device with not a lot of memory and don't want it being spent in the Read More... Posted Friday, December 01, 2006 9:09 AM by cenet | 2 Comments Filed under: Author: John Spaith