Watchdog timer reset
VanBaren, Gerald (AGRE)
Gerald.VanBaren at smiths-aerospace.com
Thu Aug 12 23:14:46 EST 2004
> -----Original Message-----
> From: wd at denx.de [mailto:wd at denx.de]
> Sent: Thursday, August 12, 2004 8:52 AM
> To: Eli Brin
> Cc: VanBaren, Gerald (AGRE); 'linuxppc-embedded at lists.linuxppc.org'
> Subject: Re: Watchdog timer reset
> In message
> <023EF71CB65AA949A2C510353690C86B027FB4 at rokonet-e.rokonet.co.i
> l> you wrote:
> > But, strangely, if I don't do any printk() and printf() no resets.
> > Can the printing to console from kernel/user "block" the
> kernel for so long?
> Yes, printk() can block the kernel for a long time. Try increasing
> the console baudrate, and or not using output to a serial port at
> > Where is the MMU support?
> What do you mean?
> Best regards,
> Wolfgang Denk
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
> It is dangerous to be right on a subject on which the established
> authorities are wrong. -- Voltaire
You could also hack some code into the serial driver to kick the WDT every character or every n characters. Ugly, but would probably get the job done for you.
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