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---
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title: Raspberry Pi
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date: 2023-11-25T09:14:35+01:00
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#lastmod:
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#showDate: false
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showReadingTime: false
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showWordCount: false
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showPagination: false
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#showAuthor: false
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showBreadcrumbs: true
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feed_exclude: true
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# site_exclude: true
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draft: true
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---
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## Raspberry Pi 4
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4GB version, if that information is of any use.
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### No network after boot
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Sometimes I make mistakes in my initial `wpa_supplicant.conf` file (that I'd place on
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the boot partition of the new Raspberry Pi SDcard). Recently my `wpa_supplicant.conf`
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file was totally messed up (a bracket too much I think).
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So there is a quick way to connect to a WiFi network with the use of `nmcli` (NetworkManager).
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~~~console
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$ sudo nmcli device wifi connect [ssid] password [password]
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~~~
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You can view networks with (no need for _sudo_):
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~~~console
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$ nmcli device wifi list
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~~~
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### Moving to testing (from bookworm)
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Why would you want to do that in the first place? Well, most
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packages on debian _stable_ are quite old -- hence the name _stable_.
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If you need newer packages, you should consider moving to the _testing_
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branch. I moved my Raspberry Pi 4 to _testing_ because of the starship
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prompt that I use on my computers -- it needed a newer version of the
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`rustc` package.
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First of all, upgrade to the latest packages.
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~~~console
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$ sudo apt update && sudo apt upgrade
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~~~
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Now change the release name (e.g. `bookworm`) to `testing` in `/etc/apt/sources.list`:
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~~~
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deb http://deb.debian.org/debian testing main contrib non-free non-free-firmware
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deb http://deb.debian.org/debian-security/ testing-security main contrib non-free non-free-firmware
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deb http://deb.debian.org/debian testing-updates main contrib non-free non-free-firmware
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~~~
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Then update step by step.
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~~~console
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$ sudo apt update
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$ sudo apt upgrade
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~~~
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> Restart services during package upgrades without asking?
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Answer with <kbd>Yes</kbd>.
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Finish the update:
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~~~console
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$ sudo apt full-upgrade
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$ sudo reboot
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~~~
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### Python 3
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#### Installing non-packaged modules
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I could not find `aprslib` as a package, so I had to install this myself.
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Debian did not allow the installation as it did before, so I had to create
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a virtual environment. And it went like this:
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~~~console
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$ python -m venv ~/.env
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$ source ~/.env/bin/activate
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$ pip install aprslib
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$ deactivate
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~~~
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I now have a similar line in my crontab:
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~~~crontab
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3 * * * * /home/dominic/.env/bin/python /home/dominic/bin/aprs_sendstatus.py
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~~~
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We could also create virtual environments per application, module, package etc.
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<https://www.raspberrypi.com/documentation/computers/os.html#python-on-raspberry-pi>
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## Raspberry Pi 3
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## Raspberry Pi 2
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## Raspberry Pi Pico W
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### Using MicroPython
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<https://micropython.org/download/RPI_PICO_W/>
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I did the dumb thing and made the `boot.py` file break which led to an endless
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loop showing me only the Error code and restarting...
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I was able to stop the script by quickly pressing <kbd>CTRL+D</kbd>,
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<kbd>CTRL+C</kbd> on the serial console but never was able to update the broken
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file without it doing a soft-reboot which loads `boot.py` again instantly...
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After some research I was glad I found [pico-nuke](https://github.com/polhenarejos/pico-nuke/releases).
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Boot into uf2 loading (pressing BOOTSEL while power on) and place the correct .uf
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file (`pico_nuke_pico_w-1.1.uf2`) on the mounted device.
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On OpenBSD there is no response but you can see the filesystem unmounted/removed.
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Unplug the USB and plug it in again booting into uf2 loading, copying over the
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MicroPython uf2 file again.
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