Geek Funk Labs

Tag: squishbox

  • Faster Startup

    considering changing /etc/systemd/system/squishbox.service unit file to get <7s start time

    #After=multi-user.target
After=local-fs.target
    startup time plot

  • SquishBox setup notes

    setting up in debian buster

    • write image, save ssh, wpa_supplicant.conf to /boot
    • sudo apt-get update/upgrade
    • sudo apt-get install fluidsynth
    • build newest fluid: get source; edit /etc/apt/sources.list uncomment deb-src line; sudo apt-get build-dep fluidsynth --no-install-recommends; mkdir build; cmake ..; make
    • install nginx – (https://www.raspberrypi.org/documentation/remote-access/web-server/nginx.md) – lots of stuff
      sudo apt-get install nginx; sudo apt-get install php-fpm; edit /etc/nginx/sites-enabled/default
      allow large files to upload: add to http context in /etc/nginx/nginx.conf: client_max_body_size 900M;<br>in /etc/php/7.0/fpm/php.ini:
      memory_limit = 32M?<br>upload_max_filesize = 900M<br>post_max_size = 999M
    • sudo apt-get install python3-pip
    • sudo apt-get autoremove
    • sudo apt-get clean
    • sudo pip3 install oyaml RPi.GPIO RPLCD mido
    • install dac: add dtoverlay=hifiberry-dac and #dtparam=audio=on to /boot/config.txt
    • upload squishbox code
    • chmod a+x squishbox.py
    • realtime audio:
      sudo usermod -a -G audio pi
      sudo vi /etc/security/limits.d/audio.conf:
      @audio - rtprio 80<br>@audio - memlock unlimited
    • web panel stuff tinyfilemanager
    • add www-data to pi group and chmod -R g+rw /home/pi
    • edit /lib/systemd/system/php7.3-fpm.service – umask 0002 to [Service]
    • create systemd service
      www.reddit.com/r/raspberry_pi/comments/4vhofs/creating_a_systemd_daemon_so_you_can_run_a_python/
      create /etc/systemd/system/squishbox.service:
      [Unit]<br>Description=SquishBox<br>After=multi-user.target [Service]<br>Type=simple<br>ExecStart=/home/pi/squishbox.py<br>User=root<br>WorkingDirectory=/home/pi<br>Restart=on-failure [Install]<br>WantedBy=multi-user.target<br>sudo systemctl enable squishbox.service<br>sudo systemctl daemon-reload<br>sudo systemctl start squishbox.service

  • Mods/Upgrades

    • use tinyfilemanager (https://github.com/prasathmani/tinyfilemanager) for web interface
    • new yaml format, script to convert old->new easy
    • directory structure: scripts in ~/SquishBox directory
      • soundfonts
      • banks
    • speed up boot time
    • look into some kind of bare-metal fluidsynth build?
      • fast but less mod-able
    • separate service to start LCD with version + maybe progress bar
    • midi routing – expand with mido
    • also mido for connecting midi devices?
    • midi out for recording?
    • use sequencer?
    • polyphone or other soundfont editor on squishbox?
    • separate fluidsynth/patch functionality from stompbox interface so code can have more general use?
    • maybe patches could be used in DAW
    • allows other options for display/interface – screen, indicators, MIDI only
    • maybe start with curses GUI to make development/hacking easier

  • Pi Images for Squishbox

    use piShrink to shrink/autoreexpand images https://github.com/Drewsif/PiShrink