Thread: Unexplained intermittent CAN / 2CAN Jaguar problems at GSR
View Single Post
  #3   Spotlight this post!  
Unread 08-03-2011, 11:09
heydowns's Avatar
heydowns heydowns is offline
Registered User
AKA: Jeff Downs
FRC #1511 (Rolling Thunder)
Team Role: Mentor
  
Join Date: Jan 2006
Rookie Year: 2005
Location: Ra-Cha-Cha
Posts: 142
heydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond reputeheydowns has a reputation beyond repute
Re: Unexplained intermittent CAN / 2CAN Jaguar problems at GSR
1511 also saw similar failures during our time at FLR this past weekend. Fortunately for us this never manifested out on the playing field, only when testing in our pit.

I was able to attach the Windriver debugger a few times when we caught the error and have some technical details to compile and share with the developers (on my list of stuff to do hopefully today).

It appears to be almost certainly a race condition during startup whereby when the failure is tripped a task initiated for CAN handling is terminating due to following a bad pointer.

For completeness, our setup is serial/black jag based, all black jags in chain. C++ with latest (2/16) update, cRIO with image v28.
Last edited by heydowns : 08-03-2011 at 11:27. Reason: Add configuration details
Reply With Quote