The nature of blocking in the case of I2C_DRV_MasterSendDataBlocking() for KSDK and MQX

[davepfaltzgraff]

I'm exploring the I2C with RTOS example found at C:\Freescale\KSDK_1.2.0\examples\frdmk22f\demo_apps\i2c_rtos\i2c_rtos_mqx\kds and noted the use of the I2C_DRV_MasterSendDataBlocking() function.

When it's being used in MQX like this am I understanding it right that only the task calling this function is blocked and the remaining MQX tasks will continue to run?

Thanks

[adriancano · Accepted solution]

Hi David,

Your understanding is right. In some part in the I2C_DRV_MasterSendDataBlocking() a OSA_SemaWait functions is called. You can check the next i2c wait functions:

therefore waiting for a semaphore to be posted by another event or task will cause a wait in the current task allowing other tasks be handled by the Operating System meanwhile.

Hope this information can help you

Best Regards,
Adrian Sanchez Cano
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[davepfaltzgraff]

Hi Adrian,

That's what I was hoping!

Thanks for the quick response.

Dave