Author(s)
One year after the first release of V.2 of Pi4J, a new release was published. Pi4J provides friendly object-oriented I/O API and implementation libraries for Java Programmers to access the full I/O capabilities of the Raspberry Pi platform.
And what an amazing achievement with this new release! No major issues were found in the previous release, but several small fixes were added by more people than ever before in the Pi4J-history. This is a real confirmation of the openness of this project and how a community can work together to further improve a project.
A big thank you to everyone who experimented with Pi4J, took part in the discussions, filed an issue, created a merge request, added examples,...!
New example implementations
Thanks to the work of FHNW University students and @taartspi, the list of available example implementations has become larger and larger.
We even moved them to their own section of this documentation website!
Take a look at Example implementations if you need a quick-start to use a buzzer, camera, LED strip, TCA9548, MCP4725,... or any of the other examples.
Changes in V2.2.0
Multiple improvements were added in this release (and others are already in progress for the next one!):
- by @taartspi to improve SPI initialization, see #229
- by @haumacher regarding the use of ByteBuffers, see #185
- by @savageautomate regarding the polarity of digital output, see #93
- by @gugrim to ensure positive values are returned from reading unless at end of file, see #164
- by @eitch to also export LinuxFS I2C in module-info.java
- by @eitch to also copy native libs to distribution zip
- by @hagen to be able to configure sample rate and peripheral in PiGpio
- by Saskia Bikle to add an implementation of deregistration/shutdown for IO's
- by @savageautomate to add a new value "flags" too SPI implementation
All the differences can be checked by comparing with the previous release 2.1.1 via this link.
The new version is available in the Maven repository and via https://pi4j.com/download/.
Earlier release notes
Release notes of the previous releases of Pi4J V.2 are available on github.com/Pi4J/pi4j-v2/releases.
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Pi4J V.2 Released!
The Pi4J Project was started in 2012 by Robert Savage, the same year the Raspberry Pi was introduced.
After long rework, the Pi4J library (a friendly object-oriented I/O API and implementation libraries for Java Programmers to access the full I/O capabilities of the Raspberry Pi platform) has taken a big step with the first release of the V.2.
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Controlling Electronics with JBang on the Raspberry Pi
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Java in Education: Combining Java with Raspberry Pi and the Pi4J Library
Although a lot of universities and high schools focus on Python and C# in their program, there are luckily a lot of others who go “full Java”.
Don’t get me wrong, I definitely don’t want to start a “programming-languages-war”, but Java is the language I used myself more than any other for the last 10 years.
Setting up a new project or building a proof-of-concept for a new idea, is a matter of hours. And there is always a solution for the problem I need to solve.
This is probably true for each developer who has enough experience in the language used the most. But having used and experimented with many other languages, I still keep returning to my “one true love”, being Java, as it always delivers the result I’m aiming for, with the right amount of code to be readable, understandable, and testable!
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