What does a blocking peripheral driver actually block?

[althafismail]

I'm trying to optimize the timing in my application that uses the K64F12, KDS3.0, KSDK1.3, and MQX.  I wonder if any one know if a blocking peripheral driver only blocks the corresponding MQX task that calls it, or does it completely block MQX from continuing on with other tasks?

[xiangjun_rong]

Hi, Althaf,

As far as I know, most peripheral drivers of MQX do not use blocking mechanism, in other words, the read()/write() function return immediately without blocking. If the peripheral drivers use blocking mechanism, it only blocks the corresponding MQX task that calls it.

Hope it can help you.

BR

Xiangjun Rong