TSR's

[Joel Sherrill <joel@OARcorp.com>]

Mike Bertosh wrote:
> Hi all,
> 
> I am calling a function inside my TSR that tries to obtain the network semaphore. 
> When this happens my program crashes in the internal error function. Am I allowed to 
> get the network semaphore from inside the TSR? 

no, no, no and no. :)

If you do not acquire the network semaphore, the caller will block.  A 
TSR runs in the clock tick ISR -- not a task.  That error check is in 
there just to prevent the weird errors you would get if you blocked in
the middle of an ISR.

I don't know what you are trying to accomplish but you probably want to
wakeup a task to do it.  Most of the network drivers have to do this to
defer some processing to task level for this very reason.

 > Any help would be greatly
> appreciated. Thanks for your time.
> 
> Mike Bertosh
> Motion Control Systems, Inc.
> New River, Va
> 540.731.0540
> 


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