GPIO on the Olimex A20-OlinuXino Micro with Linux A guide with Shell and C examples
■I'm using GPIO on the A20 for over a year now. With the new image with kernel 3.4.67+ the numbering and the names of the GPIO devices has been changed. This caused me a lot of trouble, because I needed to change my software as well as my configuration.
■The documentation on the A20 GPIO under Linux is still the old one and there is no hint how to do it correctly. As the documentation is outdated, I did some research myself. The result is this document, covering a little more than just GPIO.
■What is this document about and what can you expect?
▲Explains how to use GPIO (under both kernel versions)
▲Explains how to change the port configuration
▲Examples in Shell and C
▲All just for Linux
■You are wrong, If you expect
▲code ready to use in your application
▲Python code
▲Android stuff
■So, I'll not answer questions about Android and/or Python. Not because I don't want, just because I have no idea about both subjects!
■I tried my best, but I'm absolutely sure, that there are some errors within this document and/or the code given here.
■Therefore, I'll not take any responsibility for anything going wrong, any damage on your system or anything else related to this document. This document come as it is!
■But you are welcome to improve this document. So please send your comments, improvements, or corrections.
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2014/9/27 |
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1.3 MB |
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