B4J Question Pi4J broken - any alternative

[alvinmb]

It looks like Pi4j is broken and has been for several months. (BCM2835 error on RaspberryPi B+ #319)
Any one know of an alternitive?
Has anyone created a B4j library for jpigio?

https://github.com/nkolban/jpigpio

 

[JordiCP]

An alternative, if you have a Raspberry Pi3, is to use android Things + B4A.
The pity is that it does not work (as far as I know) with older raspberry Pi models

 

[Erel]

It looks like Pi4j is broken and has been for several months. (BCM2835 error on RaspberryPi B+ #319)

Pi4J is working. Where is the relevant thread that discusses such issue?

 

[alvinmb]

https://github.com/Pi4J/pi4j/issues/319

This issue has been around for while. I have tried and downloaded the 1.2 snapshot, however this does not address the issue.

 

[Erel]

Based on the comments, v1.20 fixes this issue for most boards.

Do you get this error with the latest version of jPi4J? Which board are you using?

 

[alvinmb]

I'm using a raspberry pi zero W with the latest builds. I have also tried it on a raspberry pi 2. I also have tried the 1.2 snapshot build, and I still have the problem. This issue was reported mid last year with no fix from the author of pi4j library. It looks like the issue is to do with pi4j static linking and not using the latest library. Hence by inquiries if an alternative library exists.

 

[alvinmb]

And yes I get the same error with 1.2 that it can't identify the board.

 

[Erel]

I've tested it with a RPi 3 running the newest image. I did see this error. It was resolved by updating to the latest version of Pi4J.

I've updated the package.

To complete this thread:
1. Pi4J library (the one wrapped by jPi4J) is not broken for several months. Library author explanation: https://www.raspberrypi.org/forums/viewtopic.php?t=182191#p1194857
2. You can use Android Things as an alternative.

If you have any specific question or issue then please start a new thread.

 

[alvinmb]

When you say the latest version of Pi4J do you mean the 1.2 snapshot from the pi4J web site or a version from another source?

 

[Erel]

From Pi4J web site.

 

[alvinmb]

I updated my pi4j to the 1.2 Snapshot.

This seems to have fixed my issue for my Raspberry Pi 3 Model B.
However the issue still occurs on my Raspberry Pi Zero W.
Looking at solutions the suggestion is that you set the linking = dynamic switch when you run the jar file.
How can you do this when using B4j and the debug. Do any options exist to modify the run command when it calls the .jar file?

sudo java -Dpi4j.linking=dynamic -jar

 

[Erel]

The original question in this thread was answered. You should start a new thread for any other question.