Starting with some basic applications

The best way to get a feel of zephyr for the smartwatch, is to start building applications.

The watch framework is under /app.

The framework contains a clock, bluetooth, a procedure to upgrade over the air, cts …

To reduce the complexity, samples are provided. Each sample contains a single feature of the framework.

Push the button

  • A button for the posix simulation watch, is a lvgl push button.

  • A button for the pinetime is a real button, which needs 2 (!) gpio ports

  • A button for the Desay D6 is a real button, which needs 1 gpio port.

To complicate matters, a button on the pinetime can be both an lvgl button and a real gpio-enabled button.

Using a framework, which would suit these watches, needs to distinguish between the boards (use a condition with parameter : CONFIG_BOARD)

posix

Building and Running

The “native_posix_64” board is your own linux-box. This means that you can execute the code on your system. You do not need a smartwatch.

west build -p -b native_posix_64 samples/button/sdlbutton

running : ./build/zephyr/zephyr.exe

pinetime

Building and Running

west build -p -b pinetime_devkit1 samples/button/pinebutton

running : west flash

Reading out the button on the watch

The pinetime does have a button on the side.
The desay D6 has a touchbutton in front.
The virtual POSIX watch has a touchbutton

Note:: The pinetime watch has a button out port (15) and button in port (13). You have to set the out-port high. Took me a while to figure this out…