Windows Phone forum: Data Abort exceptions on Windows Mobile platform.

by: devSree March 16, 2011 12:31 AM PDT

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Data Abort exceptions on Windows Mobile platform.

by devSree - 3/16/11 12:31 AM

Hi,

I'm working on USB to ethernet device on both WinCE and Windows Mobile 6.5 platforms.

I have connected the USB based NIC to my windows CE craddle which has WinCE 5.0 installed on it.I don't have any problem using this NIC on WinCE5.0.

But when i connected the same NIC in the craddle which has got WIndows Mobile 6.5 installed on it i got this data abort problems!
whenever i try to plg/unplug ActiveSync cable some couple of times to the pc i'm getting the "Data Abort" error frequently.

some times the error could be "Prefetch abort" and "Undefined instruction" also!

I could realize that the ActiveSync and the NIC use RNDIS functions.I saw some of these messages when i debug the problem!

NDIS!ndisMWakeUpDpcX() line 1089 + 8 bytes
NDIS!CeKeDpcQueueThread() line 67 + 24 bytes
COREDLL!ThreadBaseFunc() line 633 + 8 bytes

whenever i plug/unplug the device i see these messages on my serial console:

when plug in the ActiveSync cable :

[USBFN] PXAUsbDevice::CablePowerOn()
[USBFN] USB CABLE IS ATTACHED!!!!!
pxa_usbfn!PXAUsbDevice::ISTProcess: : Suspend Detected
[USBFN] _USB_CONNECT_EVENT_


and when unplug in the ActiveSync cable :

PXAUsbDevice::CablePowerOff()
[USBFN] PXAUsbDevice::CablePowerOn()
UsbFnMdd!UfnMdd_Notify: Ignoring notification 0x00000001 - 0x00000004 from PDD
[USBFN] USB CABLE IS ATTACHED!!!!!

And i suspect these messages goes to NDIS and the NDIS in turn is sending some messages to miniport driver or it expects miniport to do something , i think.But i see no OID power reaquests or any other requests coming to my miniport driver.

Any kind of suggestion is appreciable.

- Thanks in advance.

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