Tuesday, June 21, 2005

sysExternalConnectorDetachEvent and sysExternalConnectorAttachEvent on different devices

In the process of developing my products, I had a lot of "fun" with these two notifications and the different implementations on PalmOs handhelds.
as a little explanation for beginers-the PalmOs sends out notifications to programs when something hapens in order to allow them to react. Thesde notifications are sent when a peripheral is attached to or detached from a PalmOS handheld that has at least an universal connector-or thats the theory!
I looked all over the PalmOne pluggedin program to gather the following information for you:
Tungsten E
I found nothing about this device in the plugedin area. However, I once tested my evaluation program on sucbh a machine and it worked with both charger and USB cable. So, implemented ok here IMHO.
Tungsten E2
Implemented ok. PalmOne describes the following codes:

1. DockStatusCharging
This notification is sent out when the Power Adapter is attached.
2. DockStatusUSBCradle
This notification is sent out when the USB Cable or Cradle is attached. There is a bug in Tungsten T5 which causes this notification to be also sent out when a serial peripheral is attached.
3. DockStatusSerialPeripheral

Tungsten T3
My "beloved" T3-I have no problems with that. Works like a charm! What a pity for the stupid build quality, the software is quite nice there!
Tungsten T5
Codes similar to TE2. However, a bug is in the hardware(oh yeah, Mr Brosch):
If a serial peripheral is attached, you also get the USB notification. If you attach a USB peripheral, you get the serial notification in addition. If you attach a autio peripheral, you also get the serial notification in addition!
LifeDrive
Implemented with same codes like T5, E2. No information about Bugs.
Treo 650
Not implemented at all!
How is your device performing? Got something to add to that table?

Literature sources:
PalmOne pluggedin document palmOne_SDK_5_0_Docs_Developer_Guide.pdf Page 22
PalmOne pluggedin document AN_Multi_Connector_and_Serial_Peripheral_Usage.doc (about T5 bug)

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