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Reset after sleep

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garrido

1 Posts

Posted - 25 Mar 2004 : 15:40:52

Our system is using the BitsyX with the personality board. Our only connections at this time are 12V power in (battery), the debug port (com3) and serial port (com1). We place the board into sleep/suspend mode and attempt to wake it up by shorting pins 1 and 2 on J36 (System Wake-up). The debug output is as follows, starting after ADSCopy has finished:

*******Start Debug output

----- ADSCopy Finished -----

Imperx card not plugged in
PowerInterruptThread : WAIT_OBJECT_0.
pþHø PowerInterruptThread : WAIT_OBJECT_0.
pþHøPrefetch Abort: Thread=8127e400 Proc=8114f33c 'device.exe'
AKY=00000009 PC=01c621d8 RA=0244b290 BVA=01c621d8 FSR=000004f0
PowerInterruptThread : WAIT_OBJECT_0.
pþ
Reset Detected

*******Beginning System Initialization*******
CPU ID = A0 PXA255
SDCLK[1] = MemClk
MemClk = 99.53 MHz
Run Mode = 2 * MemClk
Turbo Mode = 2 * Run Mode
Mode: RUN

Reading Flash ...(from 0x40004 to 0x409ab)
Reading Hardware Tabl

Microsoft Windows CE Ethernet Bootloader built Jun 18 2003 17:38:26
Copyright (c) 2001 Microsoft Corporation
Copyright (c) 2001 Intel Corporation
Copyright (c) 2002~2003 ADS BitsyX Bootloader Ver (1.05 )
(Built at 17:38:26 on Jun 18 2003)

Reset Detected

*******Beginning System Initialization*******
CPU ID = A0 PXA255
SDCLK[1] = MemClk
MemClk = 99.53 MHz
Run Mode = 2 * MemClk
Turbo Mode = 2 * Run Mode
Mode: RUN

Reading Flash ...(from 0x40004 to 0x409ab)
Reading Hardware Tabl

Microsoft Windows CE Ethernet Bootloader built Jun 18 2003 17:38:26
Copyright (c) 2001 Microsoft Corporation
Copyright (c) 2001 Intel Corporation
Copyright (c) 2002~2003 ADS BitsyX Bootloader Ver (1.05 )
(Built at 17:38:26 on Jun 18 2003)

Reset Detected

*******Stop Debug output

In this case the system woke-up two times successfully and reset the third time. Then it just continues to reset. Any help is appreciated on this topic and I can provide further details is they are needed. Thank you.

akidder

1519 Posts

Posted - 30 Mar 2004 : 13:11:56

I wonder if there is a problem with your power source. When systems reset at boot or during wakeup, it's often because the power supply can't source enough inrush current for the display or backlight.

Can you try putting a scope on the power supply inputs and see if it's stable every time the system wakes up? Feel free to email us results if you would like a more direct conversation.

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