B4J Question jPi4J with Pi4J 1.0

[woniol]

I would like to ask for an update for jPi4J, since pi4j 1.0 i available.
It gives support for new Raspberry Pi B+ and Raspberry Pi Compute Module.
They both have extended gpio headers.

Would it be also possible to add support for PCF8574 GpioProvider in jPi4J?

 

[Erel]

Can you post a link to the updated Javadocs?

 

[woniol]

Sure:
http://pi4j.com/apidocs/index.html

 

[Erel]

Which feature is missing in the current library?

 

[woniol]

There are more gpio's and Pin numebring is extended.

So far:
pin numbers: 1-20 can be set

while the B+ has 0-29 pin numbers: http://pi4j.com/pins/model-b-plus.html
and Raspberry Pi Compute Module has 0-45 pin numbers http://pi4j.com/pins/model-cm-rev1.html

 

[Erel]

You can replace the "native" pi4j library. Just update the jars. You will then be able to use the extended pins.

 

[woniol]

Ok, i'll try it as soon as I get my new Raspberry Pi B+

Thank You

 

[Michael1968]

Hi Erel,

Would it be possible to add support for WiringPi I2c and http://pi4j.com/apidocs/com/pi4j/jni/I2C.html in jPi4J?

best regards

Michael

 

[Erel]

See the code posted here: http://www.b4x.com/android/forum/threads/jpi4j-raspberry-pi-gpio-controller.37493/#post-221224

 

[GPN]

How I can do it?
"You can replace the "native" pi4j library. Just update the jars. You will then be able to use the extended pins"
Could you help me?
Thanks.

 

[rwblinn]

Hi,

look here (info from my B4J HowTo's)

B4J Setup
A wrapper, jPi4J, is available for the Pi4J Library:
Find here http://www.b4x.com/android/forum/threads/jpi4j-raspberry-pi-gpio-controller.37493/

Summary of the Libraries required
In the B4J additional library folder, following files should be listed:
jPi4J.jar, jPi4J.xml
pi4j-core.jar, pi4j-device.jar, pi4j-gpio-extension.jar

IMPORTANT ON UPDATES
As the Raspberry Pi is being developed further, ensure to use the latest Pi4J Library files.
Download the latest jar files from http://pi4j.com/download.html#Direct_Download to the PC.
Copy following jar files to the B4J additional library folder: pi4j-core, pi4j-device, pi4j-gpio-extension

A new jPi4J library is not required. Use the one provided in jpi4j.zip (see link above). Ensure
* the jPi4J.jar and jPi4J.xml are stored in the B4J additional library folder.
* the jPi4J library is selected in the B4J IDE (Libs Tab)

Information about the Pin Numbering using wiringPi can be found here:
http://pi4j.com/pins/model-2b-rev1.html