Developers guide

Chapter 6: Power Management
Controlling Power Through The Windows Control Panel
Psion Teklogix Mobile Devices SDK Developers Guide 41
Power to software-controllable card slots is controlled using the following processes:
• Through the Windows CE Control Panel Power Properties window.
• Through application software using the SDK.
The power state can be set by either method. The most recently set state, from whichever
source, applies.
6.2.1 Controlling Power Through The Windows Control Panel
Power to the software-controllable card slots can be controlled through the Windows Control
Panel. Psion Teklogix hand-held computers have a Power icon on the Control Panel. Selecting this
icon opens the Power Properties window, which has several different tabs. Select the Card Slots
tab. For each card slot on the hand-held computer the following are listed:
• The name of the card slot.
• One of:
- The name of the peripheral occupying the card slot.
- Disabled.
-Empty Slot.
• A checkbox indicating whether the card slot is enabled or disabled.
Click on the checkbox to toggle the power state of the card slot. Changes do not take effect until
you click the Apply button.
Refer to the user manual for the Psion Teklogix hand-held or vehicle-mount computer for more
details.
WORKABOUTPRO SD-MMC SD-MMC Yes SD card (memory
only)
MMC card (memory
only)
CF PCMCIA Slot0 Ye s CF card
PCMCIA
(upgradable on
100-pin
connector)
PCMCIA Slot1
3
Yes PCMCIA card
3
On the WORKABOUT PRO, when the PCMCIA slot is not installed, calls to the power state setting method for PCMCIA
Slot1 throws an exception.
Psion Teklogix
Computer
Card Slot
Type
SDK Hardware
Name
Software
Control Of
Power State
Cards Accepted