topic Re: Is there anything like critical section within SDK? in Kinetis Software Development Kit

Is there anything like critical section within SDK?

tonymakkiel — Thu, 28 Jul 2016 10:17:27 GMT

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

Re: Is there anything like critical section within SDK?

bobpaddock — Thu, 28 Jul 2016 12:46:29 GMT

atomic.h attached gives the needed code.

ATOMIC_BLOCK( ATOMIC_RESTORESTATE )

{

// protected stuff.

}

Re: Is there anything like critical section within SDK?

tonymakkiel — Thu, 28 Jul 2016 15:21:35 GMT

Thank you very much :smileyhappy:.