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Configuration
All these configurations are optional, but I found them quite useful.
By default the RaspberryPi runs on python2.
Check which python versions you have installed by
either running python and python3 in your command line.
Hatchling is written in python3 (3.7 and above) so every command should be python3 instead of python.
Note: You need at least python3.7 on your raspberry. If you have an older version you might want to consider reinstalling your OS.
Since I mainly work with python3, I changed the default python to python3.
Here is a good instruction on how to do this on Linux machines
Now whenever you type python, python3 is executed from /usr/lib/python3/
The same is then also true for related tools like pip/pip3, since it is located in the same library.
The pins of the RaspberryPie are set to input by default.
To find out your pin configuration run this command in the terminal:
gpio readall
In order to avoid annoying hardware issues at system boot,
set your used pins to output and adjust their default status.
I set all my used pins to putput (op) and pulled them low (dl).
Only the latch pin of the LED/Buzzer driver I pulled high (dh).
You can adjust these as you wish, depending on your setup.
Note: The pin numbering here is in BCM format.
To change the configuration, go to /boot/config.txt
and add these lines:
gpio=17,22,5,6,13,19,26,18,23,24,25,12,16,20,21=op,dl
gpio=27=op,dh
python -m venv py_env/hatchling
source py_env/hatchling/bin/activate
pip install <package name>
pip install -r requirements.txt
deactivate
See als this page for more details.