In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote:

I've not used that chip either, but I have used the MCP23016 with the BS2p series; perhaps something in this article will help you:

[url]http://www.parallax.com/Portals/0/Downloads/docs/cols/nv/vol5/col/nv109.pdf[/url]

You'll also want to keep in mind that I2C functions are time-oriented (like PAUSE, SERIN, SEROUT) so they can chew through a lot of your code space -- this means it's best to encapsulate them in custom subroutines and functions.  I've attached an I2C template with code I use in my projects.  I've also attached an update template (drop into your \templates folder) as the one you're using is quite old.

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