SDK & software

SiFli SDK

Official primary SDK covering the full SF32LB52 / 55 / 56 / 58 lineup

Built on the RT-Thread Smart real-time OS with a Bluetooth 5.3 dual-mode stack, the ePicasso graphics engine and a hi-fi audio framework. CMake + SCons dual build, GCC + VS Code debug — works the way you'd expect.

GitHub repo Read the docs

Full HAL driver layer with peripheral abstraction
Bluetooth 5.3 dual-mode (BR/EDR + BLE + BLE Audio)
ePicasso 2D / 2.5D graphics engine, deep LVGL integration
Hi-fi audio framework (BT calls, MP3 decode)
FAT32 + LittleFS dual filesystem
Sample projects across GPIO, UART, SPI, I²C, I²S, USB

$ git clone --recursive

https://github.com/OpenSiFli/SiFli-SDK

More development options

RTOS

Zephyr

Upstream Zephyr port for SiFli MCUs — modules/hal/sifli HAL, DeviceTree descriptions and west build integration. Community-maintained.

View repo

Components

SiFli Package Registry

Component registry for the SiFli SDK. Categorised by AI/ML, audio, display, IoT, networking, with one-click download and a RESTful API.

Browse packages

Firmware

AT firmware

Bluetooth firmware exposing a standard AT command set over UART. Turns a SiFli module into a stand-alone BT controller for hosts that don't run the SDK.

Download firmware

Rust HAL