grvl Zephyr calendar demo

Copyright (c) 2025 Antmicro

This repository includes an interactive calendar demo using Graphics Rendering Visual Library and Zephyr RTOS.

Features

• Interactive buttons
• Scrollable main view
• Animations
• Dynamic content using JavaScript

Supported boards

• Native simulator (64 bit)
• STM32H747I Discovery (M7 core) + ST B-LCD40-DSI (MB1166-A09) shield

Quick start

For hardware builds, an SD card is required to supply resource files. Make sure you have the mkfs.ext2 binary (part of e2fsprogs) available on your system - this is needed to build the SD card image.

Fetching sources

$ git clone https://github.com/antmicro/grvl-zephyr-calendar-demo
$ cd grvl-zephyr-calendar-demo
$ west init -l .
$ west update
$ west patch apply

Building

$ west build -b <board>

Preparing SD card (for hardware builds)

$ dd if=build/zephyr/zephyr.sdcard.img of=/dev/<sd-card-device> bs=4M

Flashing

$ west flash

Running (Native simulator)

$ ./build/zephyr/zephyr.exe

License

The source code for this project is licensed under Apache License 2.0, and the fonts are licensed under SIL Open Font License 1.1.