MBX_Post from ISR failure
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Suppose the following situation. Task A was pending
(MBX_Post) on a mailbox and the mailbox was posted before
the timeout expired. Free space was given to the task
A. If an ISR happens which tries to post the mailbox in
question just after the CPU time was given to the task
A the system might failure.
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Workaround:
1) Ensure there is enough free space in mailbox, so no task
need to pend when calling MBX_Post
or
2) Do not use MBX_Post from ISR