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PiSetup.md

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Setup Instructions for Raspberry Pi

Pi tested on: CanaKit Raspberry Pi 4, 8GB RAM

Equipment Used

  • Raspberry Pi 4
  • MicoSD card and MicroSD reader
    • I think there’s a way to boot with an USB instead, and this might help the Pi run faster
  • Pi Power supply
  • Monitor, microHDMI cable, keyboard, and mouse for initial set up
  • Ethernet cable or wireless adaptor for non-wireless Pis

Install Ubuntu on the Pi

Guide used: https://ubuntu.com/tutorials/how-to-install-ubuntu-desktop-on-raspberry-pi-4#1-overview OS used: Ubuntu Server 22.04.3 LTS

Connect to wifi on the Pi

Guide used: https://ubuntu.com/core/docs/networkmanager/configure-wifi-connections

Enable ssh on the Pi

Guide used: https://linuxize.com/post/how-to-enable-ssh-on-ubuntu-20-04/ Key commands:

sudo apt install openssh-server
sudo systemctl status ssh
sudo ufw allow ssh

I used my router's interface to find my Pi's IP address, but running ip a should also work. Currently, we haven't been able to ssh into the server version of Ubuntu from VSCode on Windows. However, we are able to using Linux WSL or PuTTY.

Install tmux

tmux is a terminal multiplexer that allows processes to continue running after a remote connection has been closed. As some of the steps in setting up took me hours to run, this is useful to have early on. More information on tmux here.

sudo apt install tmux

To use tmux, start by running tmux new to create a new session. Then start the process inside the session. Once that is running, Ctrl-b d will detach the session and continue to run it in the background, even if the remote connection is closed. To reattach to a session, run tmux attach

Dependencies - same as normal setup

sudo apt update && sudo apt upgrade  # Optional, but recommended 
sudo apt install build-essential clang bison flex libreadline-dev gawk tcl-dev libffi-dev \
libftdi-dev mercurial graphviz xdot pkg-config python3 python3-pip libboost-all-dev cmake make

Other dependencies needed

Pip didn’t work on my setup for the python packages so I found this workaround.

sudo apt install git python3-serial python3-numpy python3-matplotlib python3-sortedcontainers

Remove brltty to use microcontrollers

sudo apt remove brltty

Configuring the BitstreamEvolution core - same as normal

This did crash my Pi the first time I ran it, but worked once I powercycled and reran it.
sudo make in the root directory of BitstreamEvolution

Set up Arduino CLI

The first two commands are different from normal setup since Pis use ARM

wget https://downloads.arduino.cc/arduino-cli/arduino-cli_latest_Linux_ARM64.tar.gz
tar -xf arduino-cli_latest_Linux_ARM64.tar.gz -z
./arduino-cli update
./arduino-cli upgrade
./arduino-cli core download arduino:avr
./arduino-cli core install arduino:avr

Compile and upload - same as normal

I used sudo dmesg | tail to figure out the arduino’s device file. I had to add myself to the plugdev and dialout groups and then powercycle before I could upload to the arduino.

sudo usermod -a -G dialout USERNAME
sudo usermod -a -G plugdev USERNAME
./arduino-cli compile -b arduino:avr:nano [PATH TO PROJECT i.e. ~/BitstreamEvolution/data/ReadSignal/ReadSignal.ino]
./arduino-cli upload -b arduino:avr:nano -p /dev/ttyUSB# PATH/TO/SKETCH

Running

python3 src/evolve.py

I couldn’t get graphics to work on the ssh client. The best solution I have so far is downloading the workspace folder and the config file to a copy of the repo I have on my local machine. From there, I could run the plotting tool. The plots kept freezing, so this isn’t an ideal solution.