mailbox_pend exception

Hello James,

How is this related to TM4C12x devices. Please elaborate?

Regards
Amit

Maybe wrong support group. I was using sysbios on TM4C123.

Hi James,

Sorry we were not notified that your post was moved to the TI-RTOS forum.

The Mailbox_pend and Mailbox_post calls are thread-safe.
What version of TI-RTOS are you using? Can you look in ROV (in CCS) at the Hwi->Exception tab. This will include a back trace if you hit an exception. Can you post a snapshot if there is a trace?

Todd

I am not sure what the problem was. The interrupt routine was posting to a mailbox and within the queue routine of post it was having a memory access violation. I verified all the data sizes to the message pend and post and did not see anything wrong with it. I didnt have time to waste on it so I modified the interrupt to be processed as an event and skipped the used of a message with the interrupt and I have not had any more exceptions.

Were you using a non-zero timeout value on the post from the ISR? This is not allowed.

No I had no waiting as it was in the interrupt calls. The message was setup so that it would generate an event when added to. Interrupt was set by a timer.