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Quick and dirty GPIO speed test - findings

Started by Fabien Royer, Jan 22 2011 11:25 PM

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20 replies to this topic

#21 Corey Kosak

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LocationHoboken, NJ

Posted 12 February 2011 - 05:31 PM

Now that's what I call speed. Great job Corey!

What's interesting is that it seems that the state of 32 carefully-chosen adjacent pins can be simultaneously set in just a few machine instructions (load 32 bit data word, store in SODR, then XOR, store in CODR).

This means that the max achievable throughput of a Netduino that is doing parallel communication is actually quite high.