Watch Application System in Python

Introduction

Wasp-os is a firmware for smart watches that are based on the nRF52 family of microcontrollers, and especially for hacker friendly watches such as the Pine64 PineTime. Wasp-os features full heart rate monitoring and step counting support together with multiple clock faces, a stopwatch, an alarm clock, a countdown timer, a calculator and lots of other games and utilities. All of this, and still with access to the MicroPython REPL for interactive tweaking, development and testing.

Wasp-os comes fully integrated with a robust bootloader based on the Adafruit NRF52 Bootloader. The bootloader has been extended to make it robust for development on form-factor devices without a reset button, power switch, SWD debugger or UART. This allows us to confidently develop on sealed devices relying on Bluetooth Low Energy for over-the-air updates.

Documentation

Wasp-os is has extensive documentation which includes a detailed Application Writer’s Guide to help you get started coding for wasp-os as quickly as possible.

Getting Started

Wasp-os can be installed without using any tools or disassembly onto the following devices:

  • Pine64 PineTime
  • Colmi P8
  • Senbono K9

Use the Installation Guide to learn how to build and install wasp-os on these devices.

At the end of the install process your watch will show the time (03:00) together with a date and a battery meter. When the watch goes into power saving mode you can use the button to wake it again.

At this point you will also be able to use the Nordic UART Service to access the MicroPython REPL. You can use tools/wasptool --console to access the MicroPython REPL.

To set the time and restart the main application:

^C
watch.rtc.set_localtime((yyyy, mm, dd, HH, MM, SS))
wasp.system.run()

Or, if you have a suitable GNU/Linux workstation, just use:

./tools/wasptool --rtc

which can run these commands automatically.

As mentioned above there are many drivers and features still to be developed, see the Roadmap for current status.

Community

The wasp-os community is centred around the github project and is supplemented with instant messaging via the #wasp-os IRC channel at freenode.net.

If you are unfamiliar with IRC we recommend the offical freenode web client. Choose a nickname, leave I have a password unchecked, set the Channel to #wasp-os and click Start. That’s it!

Screenshots

(An older version of) the digital clock application running on a Pine64 PineTime:

wasp-os digital clock app running on PineTime

Screenshots of the built in applications running on the wasp-os simulator:

Bootloader splash screen overlaid on the simulator watch art Digital clock application running on the wasp-os simulator Heart rate application running on the wasp-os simulator Stop watch application running on the wasp-os simulator Step counter application running on the wasp-os simulator Application launcher running on the wasp-os simulator Settings application running on the wasp-os simulator Software selection app running on the wasp-os simulator

wasp-os also contains a library of additional applications for you to choose. These are disabled by default but can be easily enabled using the Software application (and the “blank” white screen is a torch application):

Self test application running a rendering benchmark on the simulator Torch application running on the wasp-os simulator Analogue clock application running in the wasp-os simulator An other clock application running in the wasp-os simulator Fibonacci clock application running in the wasp-os simulator Haiku application running in the wasp-os simulator Game of Life running in the wasp-os simulator Alarm clock application running in the wasp-os simulator Music Player running in the wasp-os simulator Calculator running in the wasp-os simulator Let's play the 2048 game (in the wasp-os simulator) Snake Game running in the wasp-os simulator Countdown timer application running in the wasp-os simulator Weather application running in the wasp-os simulator Shows a time as words in the wasp-os simulator