http://www.brickengineer.com/robots/2008/09/19/i2c-tutorial/ ... and growing exponentially Wed, 04 Mar 2009 03:16:12 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.brickengineer.com/robots/2008/09/19/i2c-tutorial/comment-page-1/#comment-28 Russel Thu, 19 Feb 2009 01:00:07 +0000 http://www.brickengineer.com/robots/?p=60#comment-28 I am trying to use I2C communication between a PIC 18F4520 and a port expansion PCA9554 using C language and am getting nowhere. i know i need to send a sart command and then adress and then data bytes...but nothing is working for me. any comments for help would be appreciated. I am trying to use I2C communication between a PIC 18F4520 and a port expansion PCA9554 using C language and am getting nowhere. i know i need to send a sart command and then adress and then data bytes…but nothing is working for me. any comments for help would be appreciated.

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