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Olimex Support Forum

OLinuXino Android / Linux boards and System On Modules => A20 => Topic started by: yurin on October 20, 2014, 09:28:48 AM

Title: A20 - lime reading GPIO - support
Post by: yurin on October 20, 2014, 09:28:48 AM
Hello,

I have A20 - lime running on debian
I write App in java using eclipse
I am trying to read/write to GPIO-3 with java
How can it be done ? is there any example for it?

Thanks in advance, Yuri.
Title: Re: A20 - lime reading GPIO - support
Post by: dave-at-axon on October 20, 2014, 11:11:28 AM
Have a look at this JNI for Android.

I believe you need to do this JNI when using Java to access IO.

http://sourceforge.net/p/friendlyarmgpio/code-0/HEAD/tree/jni/AxonIO/
Title: Re: A20 - lime reading GPIO - support
Post by: amaglio.c on October 21, 2014, 02:46:04 PM
Hello,
i'm interested in using GPIO (I2C, UEXT) from java on Debian (not Android), but i can't find a simple (but complete) example.

Carlo,
Title: Re: A20 - lime reading GPIO - support
Post by: dave-at-axon on October 21, 2014, 03:46:47 PM
Maybe this will help?

https://packages.debian.org/sid/libjna-java

As you need access to the native drivers you need a JNI to do this but the above may be an alternative.

I don't use or programme under Debian but the use of JNI in Android seems to be the same.
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