Xiang Xiao 6a3c2aded6 Fix wait loop and void cast (#24)
* Simplify EINTR/ECANCEL error handling

1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx

* Unify the void cast usage

1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
2020-01-02 10:54:43 -06:00
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This will eventually hold some general documentation for the IEEE 802.15.4
MAC implementation.

NOTE: Throughout the code, excerpts from the standard are quoted as to make
the code thoroughly readable. I have tried, to always put a reference [1] and
page number.  Below is the references that correspond with the reference number

[1]