Raspberry Pi history, versions, pins and headers as a Java Maven library
The best way to understand and learn something new, is to document it yourself. That’s what I’m doing in every step for my book-in-progress. And to fully get the pinnings and headers of the different Pi-boards, I decided to gather all info into a Java library with different enums to be able to auto-generate some content for the book and use in a few different example applications.
Maven repository
A first version is now available on Maven, but will definitely be further extended as I’m working on the content of the book.
Raspberry Pi headers library in Maven repository
Source code
The sources are available on GitHub. For example the list of available pin types:
public enum PinType {
POWER("Power", 0x990000),
GROUND("Ground", 0x000000),
DIGITAL("Digital", 0x009900),
DIGITAL_AND_PWM("Digital and PWM", 0xff7ff00),
DIGITAL_NO_PULL_DOWN("Digital without pulldown", 0x800080);
...
}
Example application: JavaFX visualization
As an example in the book this library is used to automatically generate this JavaFX view of a Pi header:
Raspberry Pi headers library in Maven repository
Auto-generated README
Some code in the sources (UpdateReadme.java) automatically generates a new readme file with all the info from the enums.
Pi models
Name
Label
Description
MODEL_A
Model A
Without ethernet connector
MODEL_B
Model B
With ethernet connector
COMPUTE
Compute Module
Pi on a 200-pin DDR2-memory-like module for integration in embedded devices
