Start work on firmware build scripts

build/dimensioner.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+mkdir workspace
+cd workspace
+git clone https://github.com/micropython/micropython.git
+cd micropython
+make -C mpy-cross
+cd ports/rp2
+make submodules
+make BOARD=RPI_PICO FROZEN_MANIFEST=../../../../src/dimensioner/manifest.py

src/dimensioner/main.py

@@ -87,6 +87,8 @@ ZERO_BUTTON_PIN = 13 # Pin to read if hardware zero button is pressed
 UNITS_BUTTON_PIN = 14 # Pin to read if hardware unit change button is pressed
 FIRMWARE_VERSION = "1.0"
 
+machine.freq(240000000) # Set CPU to 240MHz (about twice as fast as default)
+
 #
 # USB configuration
 #

src/dimensioner/manifest.py

@@ -0,0 +1,7 @@
+# Build manifest for PostalPoint Parcel Dimensioner
+require("usb-device-hid")
+require("ssd1306")
+module("dimensioner_utils.py")
+module("dimensioner_screen.py")
+module("ssd1306big.py")
+module("main.py")