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Token Release Behaviour in Mutex vs Semaphore

Seng Tak GOH

Hi,

I have a question regarding the usage and behaviour of Mutex vs Semaphore in RTX v4.7, in which I have two threads that needs to access a critical section.

Obviously Mutex seems to be the more appropriate choice than Semaphore since only 1 token is enough to control access to the critical section...however I need to release the token in ISR and Mutex does not allow this while Semaphore does..

What makes the difference here?

Thanks.

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