Is there anything like critical section within SDK?

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Is there anything like critical section within SDK?

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tonymakkiel
Contributor III


Hi,

        Is there something like windows critical section within SDK 2.0 (or a mutex/semaphore will do). I am not using any RTOS. Basically there is a function which I do not want the system to interrupt, to service anything else. I am using SDK 2.0 for KL43.

 

The problem is the function shares a variable with uart callback function. So if there is a uart callback while the function is being services, the call back function changes the value and if my function is half way through processing based on initial value, when it resumes it goes crazy!

 

Many Thanks,

Tony

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bobpaddock
Senior Contributor III

atomic.h attached gives the needed code.

    ATOMIC_BLOCK( ATOMIC_RESTORESTATE )

    {

      // protected stuff.

    }

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bobpaddock
Senior Contributor III

atomic.h attached gives the needed code.

    ATOMIC_BLOCK( ATOMIC_RESTORESTATE )

    {

      // protected stuff.

    }

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tonymakkiel
Contributor III

Thank you very much :smileyhappy:.

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