Description Driver for the NXP Semiconductor PCA9554 and PCA9554A devices. See http://www.nxp.com/documents/data_sheet/PCA9554_9554A.pdf
Component PCA9554.PEupd
Dependencies SW I2C, HW I2C

Important Information

Starting January 1st 2013, the latest and greatest versions of components and examples are hosted on GitHub.


License : Open Source (LGPL)
Copyright : (c) Copyright Erich Styger, 2011, all rights reserved.

This an open source software implementing a driver for the NXP Semiconductor PCA955(A) (I2C I/O expander) using Processor Expert.
This is a free software and is opened for education, research and commercial developments under license policy of following terms:
* This is a free software and there is NO WARRANTY.
* No restriction on use. You can use, modify and redistribute it for personal, non-profit or commercial product UNDER YOUR RESPONSIBILITY.
* Redistributions of source code must retain the above copyright notice.


Date Version Description
03-Jan-2012 1.002 Initialization sets input/output register now to power-on-reset default values (input).
25-Oct-2011 1.001 Initial release.


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