Programming the RPi

 Each time I've had to start programming a Pi from scratch, there've been two ordeals to overcome:

1.) Compile the driver for the charge controller and

2.) Program the Pi for WiFi Access Point operation.

Variables:

1.) The model: 3b+, 4b

2.) The opsys: Jessie, Buster, Stretch, Bullseye, Bookworm

3.) The program code source

All can effect the result. As time passes inevitable incompatibilities arise and have to be reconciled. Thus, I am attempting a period setup. The term 'period' is borrowed from the world of entertainment media, e.g., period clothes, period furniture, etc.. I attempt to match the software with the operating system that I have been successful with. The model may have less impact. The installation software, Raspberry Pi Imager, automates some of the work.

Currently, I have the system up and running except for a csv to image script. I'm looking at alternatives like gnuplot and matlibplot.

I expect a motor control module in a few days. The unit seems perfect, except for the use of relays in place of MOSFETs.

RPi and obsolescence

 Attempts to get my system up and running have failed, so far.

The software has changed with each update, from Jessie to Buster to Stretch to Bullseye to Bookworm. The Exar driver has always been difficult to install, but now the driver will not compile.

I have two options. Wait till someone solves the problem or revert to an earlier version of the opsys, namely, Stretch or Buster.