Envision a future where every student can read all the code of a teaching operating system.

Open source minimal stack for the ch32 line of WCH processors, including the ch32v003, a 10¢ 48 MHz RISC-V Microcontroller - as well as many other chips within the ch32v/x line.

CH32V003 is an ultra-cheap RISC-V MCU with 2KB SRAM, 16KB flash, and up to 18 GPIOs that sells for under $0.10

Including the SDK、HDK、Datasheet of RISC-V MCU CH32V307 and other relevant development materials

Core library for CH32duino

The datasheet/SDK/HDK docmentation of Bluetooth LE RISC-V MCU CH582M/CH583M

Single-chip solution for Hi-speed USB2.0(480Mbps) JTAG/SPI Debugger based on RISC-V MCU CH32V30x/CH32V20x

CH32V203 is an industrial-grade enhanced low-power,small-medium capacity general-purpose MCU based on 32-bit RISC-V core

32-bit RISC-V MCU CH32X035 built-in USB PD PHY

SDK sch&layout reference design and datasheet documention

CH570 is the world’s cheapest RISC-V 2.4GHz wireless & USB2 SoC, costing just about a dime (10 cents)!

The SDK and HDK for RISC-V Bluetooth LE BLE5.4 CH591/CH592

The whole NFC solution (source code and schematic&layout) based on WCH chips

ESC(Electronic Speed Controller) source code based on RISC-V CH32

CH55x MCU application reference routine source code.

CH643 is an RGB display driver microcontroller based on RISC-V. Built-in 3*16-channel PWM current drive, support COM scanning. Supports 192 groups of RGB or 576 single-color LEDs without extra PMOS