Building the Firmware

Prerequisites

sudo apt update
sudo apt install cmake gcc-arm-none-eabi libnewlib-arm-none-eabi build-essential
sudo pip3 install rshell
sudo usermod -a -G dialout $USER
make -C mpy-cross
cd ports/rp2
make BOARD=PICO_W submodules

Build Firmware

cd ports/rp2
make BOARD=PICO_W
ls build-PICO_W/*.uf2

Load Firwmare onto Pico W

• put pico into boot mode by holding down BOOTSEL while plugging it into your computer

  cd ports/rp2
  sudo mkdir /mnt/pico
  sudo blkid -o list | grep RPI
  sudo mount /dev/sda1 /mnt/pico
  sudo cp build-PICO_W/firmware.uf2 /mnt/pico
  sudo sync

• power cycle the board

Connect to Python Session

screen /dev/ttyACM0

or

sudo rshell
repl

Loading the Project Code

Prerequisites

• Pico is loaded with micropython firmware and plugged into USB

Loading the Project Code

sudo rshell
rm /pyboard/*            # "Factory Reset" (Does not reset firmware)
cp subway/*.py /pyboard/ # Don't overwrite config
cp subway/*    /pyboard/ # Overwrite config
repl
# CTRL+D() to restart board. Runs main.py on startup

First Boot

• connect to "Live Subway Map" Wifi Network
• navigate to http://192.168.4.1/
• provide SSID and Password of your LAN
• connect back to your LAN
• device should have gotten assigned a DHCP address on your LAN
  • for now, it just says Hello