December Allwinner Chip Open Source Project Collection

Allwinner Collection

LC Open Source Hardware Platform

The overall project shape is based on adapting to the installation of the 86 box, using the Allwinner RISC-V core D1s chip as the main control, choosing a 4.3-inch rectangular screen that fits the housing type of many homeowners, outputting RGB888, equipped with the Allwinner XR829 as the WIFI/BLE module, and various methods of linkage.

To structurally adapt to the standard 86 box installation, the hardware design not only leads out most of the function pins of D1s including screen display, network, and audio, but also reserves development interfaces for subsequent DIY function development and full linkage with other open-source microcontroller control projects.

In terms of development system selection, the author developed this project based on Allwinner’s latest public Melis 4.0 real-time operating system and roughly adapted the LVGL graphics library for Melis 4.0, achieving core technology for light rendering on performance-constrained embedded devices, paying tribute to homeassistant.

The Linux core board based on Allwinner F1C200S is based on the ARM 9 architecture, and the SIP built-in DDR minimalist package is very suitable as a Linux development entry board.

The schematic comes from Zhi Hui Jun’s planck-pi, and some changes have been made based on this, splitting the original Type-C interface that could be inserted in both directions into two different functional Type-C interfaces, with all components using 0603 packaging for easier soldering.

The author also used LC EDA Pro to draw a 3D printable shell.

The F1C200S screen development board is an open-source hardware project based on the Allwinner F1C200S ARM926EJ-S core processor. The goal of this development board is to provide a low-cost, ultra-miniature platform suitable for Linux development, especially for screen interface support.

The development board has 16M nor flash onboard, with the main control chip being F1C200S, and 64M DRAM built-in. It also includes USB Host interface and USB type-C port, as well as CH340 serial to USB chip for development debugging.

The U-Boot adapted by the author currently uses the master branch of U-Boot and provides a porting guide. Since the master branch code may be updated later, the porting guide uses the latest U-Boot version to guide developers in modifying and configuring to compile their own U-Boot.