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Re: bitten by watchdog



Hi,

The Designer's Reference is at 
http://www.developer.axis.com/doc/hardware/etrax100lx/des_ref.html.
On page 41 in Chapter 19 you'll find the possible DMA combinations
e.g. you can see that USB and serial port 1 shares DMA channel.

The latest serial port driver is capable of doing interrupt driven
transfers at low speed. I am not sure if this serial port driver
is in the latest devboard_82 release. If it isn't it should be
possible to use the serial driver from 2.4.23 (you'll need the
.h file as well).

/Mikael

Citerar Cedric Stevens <stevensc@xxxxxxx.com>:

> Hi
> 
> You are correct to indicate the conflict in DMA.
> 
> Could you point me to where I can obtain a copy of the  Designer's Reference
> manual? This should describe all hardware conflicts.
> 
> Secondly, do you know of an interrupt driven serial driver being available
> for axis? This will allow the use of both serial1 and USB.
> 
> Regards
> 
> Cedric
> 
> 
> ----- Original Message -----
> From: <Johan.Adolfsson@xxxxxxx.com>
> To: "Cedric Stevens" <stevensc@xxxxxxx.com>
> Sent: Friday, December 19, 2003 11:47 AM
> Subject: Re: bitten by watchdog
> 
> 
> > Have you disabled USB or use ttyS1 without DMA?
> >
> > /Johan
> >
> > ----- Original Message -----
> > From: "Cedric Stevens" <stevensc@xxxxxxx.com>
> > To: <dev-etrax@xxxxxxx.com>
> > Sent: den 19 december 2003 07:35
> > Subject: Oops: bitten by watchdog
> >
> >
> > Hi
> >
> > Can anybody please shed some light on the Axis Watchdog. When accessing
> port
> > ttyS1 the devboard82 Panics as follows:
> >
> > Oops: bitten by watchdog
> > IRP: c0083b9e SRP: c0083b90 DCCR: 00000400 USP: 9ffffc40 MOF: ffffee3c
> >  r0: c010d788  r1: c010d7be   r2: c010d7bd  r3: c0c301a8
> >  r4: c010d7b4  r5: c0cc1960   r6: c0c36a40  r7: c0c36a58
> >  r8: c0be911e  r9: 00000004  r10: c010d788 r11: 00000000
> > r12: c0100f80 r13: b00001f0 oR10: c010d788
> > R_MMU_CAUSE: 35579029
> > Process testport (pid: 233, stackpage=c0e78000)
> >
> > Stack from 9ffffc40:
> >        355677c0 0000000b 00000000 9ffffcd8 00000080 0008180c 00091948
> > 0009194c
> >
> >        0008c7c8 0000000e 00000000 0000000e 00000010 3555e292 000860fe
> > 00000000
> >
> >        00000015 9ffffdd8 9ffffd58 9ffffcd8 00086186 00000000 00000000
> > 00000000
> >
> > Call Trace:
> > Stack from c0e79de8:
> >        c0008532 c0e79e64 c005b912 c005ba70 00000000 ffffee3c c010d7b4
> > c0c301a8
> >
> >        c010d7bd c010d7be c0e79e20 c005baf0 c010d788 c005b7b4 00000000
> > c010d788
> >
> >        b00001f0 c0100f80 00000000 c010d788 00000004 c0be911e c0c36a58
> > c0c36a40
> >
> > Call Trace: [<c0008532>] [<c005b912>] [<c005ba70>] [<c005baf0>]
> [<c005b7b4>]
> > [<c
> > 0083b90>] [<c0083b9e>]
> >        [<c0083af6>] [<c008543e>] [<c005ffa2>] [<c0028746>] [<c0020758>]
> > [<c001f6
> > ca>] [<c001f600>] [<c001f8d2>]
> >        [<c005b62e>]
> > Code: 69 9a 44 d2 c9 db 14 01 6d da 4d 9a (07) 93 cf 9e 04 00 f7 30 0f 05
> 0c
> > 01
> >
> > Do I have a conflict in hardware?
> >
> > Regards
> >
> > Cedric
> >
> >
> >
> >
> >
> 
> 




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