[En-Nut-Discussion] Interfacing a memory mapped (Oxford

[Brett Abbott]

>
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>Doug
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The uart is memory mapped.  Try a couple of things...
Try using NutCritical around the functions.   You may find that the 
memory is getting zapped by other calculations....  Going NutCritical 
will stop interupts and other stuff (NutEnterCritical()) NutExitCritical()

Also, try using direct memory reads and writes:  be explicit with 
addresses rather than formulas.   perhaps achieve this with inline 
assembler.  Have a look at the ethernet nic drivers as an example.

Cheers
Brett