initial commit

.devcontainer/Readme.md

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+Build CircuitPython in a Github-Devcontainer
+============================================
+
+To build CircuitPython within a Github-Devcontainer, you need to perform
+the following steps.
+
+  1. checkout the code to a devcontainer
+
+    - click on the green "<> Code"-button
+    - select the Codespaces-tab
+    - choose "+ new with options..." from the "..."-menu
+    - in the following screen select the branch and then
+    - select ".devcontainer/cortex-m/devcontainer.json" instead
+      of "Default Codespaces configuration"
+    - update region as necessary
+    - finally, click on the green "Create codespace" button
+
+  2. Your codespace is created. Cloning the images is quite fast, but
+     preparing it for CircuitPython-development takes about 10 minutes.
+     Note that this is a one-time task.
+
+  3. During creation, you can run the command
+     `tail -f /workspaces/.codespaces/.persistedshare/creation.log`
+     to see what is going on.
+
+  4. To actually build CircuitPython, run
+
+         cd ports/raspberrypi
+         make -j $(nproc) BOARD=whatever TRANSLATION=xx_XX
+
+     This takes about 2m40s.

.devcontainer/cortex-m/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/universal
+{
+	"name": "CircuitPython Cortex-M Build-Environment (base: Default Linux Universal)",
+	"image": "mcr.microsoft.com/devcontainers/universal:2-linux",
+	"postCreateCommand": ".devcontainer/cortex-mq/on-create.sh",
+	"remoteEnv": { "PATH": "/workspaces/gcc-arm-none-eabi/bin:${containerEnv:PATH}" }
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "uname -a",
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.devcontainer/cortex-m/on-create.sh

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+#!/bin/bash
+# -----------------------------------------------------------------------------
+# on-create.sh: postCreateCommand-hook for devcontainer.json (Cortex-M build)
+#
+# Author: Bernhard Bablok
+#
+# -----------------------------------------------------------------------------
+
+echo -e "[on-create.sh] downloading and installing gcc-arm-non-eabi toolchain"
+cd /workspaces
+wget -qO gcc-arm-none-eabi.tar.bz2 https://adafru.it/Pid
+tar -xjf  gcc-arm-none-eabi.tar.bz2
+ln -s gcc-arm-none-eabi-10-2020-q4-major gcc-arm-none-eabi
+rm -f /workspaces/gcc-arm-none-eabi.tar.bz2
+export PATH=/workspaces/gcc-arm-none-eabi/bin:$PATH
+
+# add repository and install tools
+echo -e "[on-create.sh] adding pybricks/ppa"
+sudo add-apt-repository -y ppa:pybricks/ppa
+echo -e "[on-create.sh] installing uncrustify and mtools"
+sudo apt-get -y install uncrustify mtools
+
+# dosfstools >= 4.2 needed, standard repo only has 4.1
+echo -e "[on-create.sh] downloading and installing dosfstools"
+wget https://github.com/dosfstools/dosfstools/releases/download/v4.2/dosfstools-4.2.tar.gz
+tar -xzf dosfstools-4.2.tar.gz
+cd dosfstools-4.2/
+./configure
+make -j $(nproc)
+sudo make install
+cd /workspaces
+rm -fr /workspaces/dosfstools-4.2 /workspaces/dosfstools-4.2.tar.gz
+
+# prepare source-code tree
+cd /workspaces/circuitpython/
+echo -e "[on-create.sh] fetching submodules"
+make fetch-submodules
+echo -e "[on-create.sh] fetching tags"
+git fetch --tags --recurse-submodules=no --shallow-since="2021-07-01" https://github.com/adafruit/circuitpython HEAD
+
+# additional python requirements
+echo -e "[on-create.sh] pip-installing requirements"
+pip install --upgrade -r requirements-dev.txt
+pip install --upgrade -r requirements-doc.txt
+
+# add pre-commit
+echo -e "[on-create.sh] installing pre-commit"
+pre-commit install
+
+# create cross-compiler
+echo -e "[on-create.sh] building mpy-cross"
+make -j $(nproc) -C mpy-cross                   # time: about 36 sec
+
+# that's it!
+echo -e "[on-create.sh] setup complete"
+
+#commands to actually build CP:
+#cd ports/raspberrypi
+#time make -j $(nproc) BOARD=pimoroni_tufty2040 TRANSLATION=de_DE