WebUSB for Zephyr OS

This folder contains WebUSB-enabled Serial interface for Zephyr OS.

Compatible Hardware

This code has been tested with the Arduino 101.

Getting Started

1. Make sure you are running the latest dev-channel release of Google Chrome.

2. Make sure "WebUSB" and "Experimental Web Platform Features" flags are enabled in chrome://flags/.

Build shell with WebUSB

1. Confirm the [Zephyr SDK] https://www.zephyrproject.org/doc/1.4.0/getting_started/installation_linux.html#zephyr-sdk) has been installed in your system.

2. Clone JavaScript* Runtime for Zephyr* OS (i.e zephyr.js) and make the initial setup.

   https://github.com/nagineni/zephyr.js.git

3. Check out the 'webusb_ashell' branch. This branch includes the changes that are required to build 'ashell' application with WebUSB support.

   $ cd zephyr.js

   $ git checkout webusb_ashell

4. Set up ZJS environment variables and get source dependencies

   $ cd zephyr.js

   $ source zjs-env.sh 256

   $ make update

   $ source deps/zephyr/zephyr-env.sh 256

5. Build the 'ashell' app

   $ cd zephyr.js

   $ make DEV=ashell

6. Flash the image: To flash the device with dfu-util, first press the Master Reset button on your Arduino 101, and about three seconds later type:

   make dfu

7. Stop ModemManager if it is running on your system:

   On Ubuntu: sudo service modemmanager stop

8. When the flashing is done press the Master Reset button one more time to boot your new image. Once the device is booted, you should see a notification from Chrome: "Go to webusb-ashell.appspot.com to connect.". Click on the notification and try the demo by connecting and uploading the JS code.