2011-08-05 13:24:34     watchdog fails to trigger on BF537

Document created by Aaronwu Employee on Aug 27, 2013
Version 1Show Document
  • View in full screen mode

2011-08-05 13:24:34     watchdog fails to trigger on BF537

Timothy Stotts (UNITED STATES)

Message: 102841   

 

I am using a BF537. uClinux release 2010.

 

# /etc/rc

 

modprobe bfin-wdt

 

 

 

Boot-time messages show:

 

bfin-wdt: initialized: timeout=20 sec (nowayout=1)

 

 

 

> ps | grep watch

 

  263 root       455 S    /bin/watchdogd -f -s

 

  347 root       719 S    grep watch

 

I did not invoke watchdogd directly; I believe that it is run by the kernel module.

 

 

 

If I generate a kernel OOPS, the board does not automatically reboot after 20 seconds. Why?

QuoteReplyEditDelete

 

 

2011-08-07 23:35:51     Re: watchdog fails to trigger on BF537

Aaron Wu (CHINA)

Message: 102852   

 

Have you tried to build the watchdog into kernel, by enabling the on chip watchdog in device driver.

QuoteReplyEditDelete

 

 

2011-08-10 13:01:25     Re: watchdog fails to trigger on BF537

Timothy Stotts (UNITED STATES)

Message: 102886   

 

Compilation of the Blackfin Watchdog Timer driver directly into the kernel instead of a module results in successful reset of the processor after a kernel OOPS.

Attachments

    Outcomes