originally a
PineTime firmware toolkit based on Zephyr Project RTOS.
now evolved into a framework which has the potential to support other watches, cyclecomputers, wearables ...
Included in this toolkit is a virtual watch, which you can run on your computer. (no real watch, devboard, debugprobe is needed!)
The pinetime board (watch) has become a part of the zephyr distribution.
You can contribute to this project, by adding your own board definition file, better coding, suggestions ...
Read the tutorial! A helpful manual is included in the repository:
- Follow the Zephyr Getting Started Guide to install zephyr SDK and tools.
- Install
westmeta tool (https://docs.zephyrproject.org/latest/guides/west/install.html).
build your first sample!
- west build -p -b pinetime_devkit0 samples/boards/pine64_pinetime
The initial toolkit was focused on getting zephyr up and running on the pinetime smartwatch.
Zephyr is still under development and some nifty features were added since (or I discovered them only lately)
- touchscreen support (kscan)
- out of tree development
- virtual board
- ssd1306 oled spi support
it inspired me to morph the original pinetime-toolkit into an open-source-watch-framework.
Quick&easy, open and cheap!
Once you set up zephyr on your system, you only have to copy the "app" directory alongside. There is an extensive "hands-on" manual included, it is an addition of the zephyr manual.
Although dev-boards are not expensive, you might just want to try things out, without spending money. Bluetooth, LVGL, board definition, touchscreen can be run native on X86. Another advantage : no need for a debug probe. You can get a taste of debugging your firmware with gdb. I've included compiled firmware, which you can run on your linux(64) box.
I used a osbox virtual linux ubuntu 18, so you do not even have to own a computer.
I made a demo clip : oswatchclip.mp4 File should be on github, not sure if it will work...
suppose you already have ../work/zephyr installed copy /app to ../work
west build -p -b native_posix_64 oswatch
./build/zephyr/zephyr.exe
a simulated watch is displayed on the screen
the simulated watch can use bluetooth! (some extra config is needed : this is explained in the included manual)
Resources:
- West documentation: https://docs.zephyrproject.org/latest/guides/west
In this repository you can find files that supplement a zephyr installation.
- board definition Contains the board definition for the pinetime, ds_d6, and native_posix_64
- drivers Contains the drivers for the pinetime, ds_d6
- samples These are building blocks, which eventually end up in the oswatch-firmware.
- the display
- bluetooth BLE
- graphics libraries
-
- LittlevGL
- RTC
- Serial NOR flash
- accel sensor
- heart rate sensor
- touchscreen (not with all the gizmo's yet)
- CTS (setting time in bluetooth)
- DFU (wireless firmware update)
- serial port
- build-in features of bosch accel sensor (eg step counter)
- powermanagement
- watchdog
- touchscreen (out of tree)
- HR detection (algorithm)
- cycle computer
There are quite a few hackable watches, based on the same nrf52832 microcontroller. I have also made a repository for the desay D6, which is a ssd1306 OLED based, cheap chinese watch with a serial port. other smartwatches This watch combined with a "blue-pill" black magic debug probe, which contains a serial port, might be one of the cheapest zephyr dev boards available!