It appears that there is something I don't understand about memory mapped IO.

I'm trying to write directly to a firmware register. I have tried in Python in binary mode with various options regarding buffering. I have also tried the command line 'echo 1 > register'. Whatever I try, the length of the register 'file' changes from 4 to 0.

Can someone point me towards enlightenment?

Many thanks

Tom

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I or me? http://www.oxforddictionaries.com/page/145



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