WCH CH32V203EVT

Overview

The WCH [1] CH32V203C8T6EVT hardware provides the evaluation kit for the CH32V203 MCU. A QuingKe V4B 32-bit RISC-V processor.

The board is equipped with two 2 LEDs, but those are not connected by default and a jumper has to be installed.

The WCH webpage on CH32V203 [2] contains the processor’s manuals. The openwch github [3] contains the schematics and some more references.

Hardware

The QingKe V4B 32-bit RISC-V processor is clocked by an external 8 MHz high speed crystal and a 32768 Hz low speed crystal, both also offering internal oscillators. Those run the board up to 144 MHz. The CH32V203 SoC Features 2-4 USART, 4 GPIO ports, 1-2 SPI, 0-2 I2C, 9-16 ADC, RTC, CAN, USB Device, USB Host, OPA, and several timers.

Supported Features

The ch32v203c8t6evt board supports the hardware features listed below.

on-chip / on-board
Feature integrated in the SoC / present on the board.
2 / 2
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.
vnd,foo
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

Programming and Debugging

The ch32v203c8t6evt board supports the runners and associated west commands listed below.

flash debug

Applications for the ch32v203c8t6evt board can be built and flashed in the usual way (see Building an Application and Run an Application for more details); however, an external programmer is required since the board does not have any built-in debug support.

The following pins of the external programmer must be connected to the following pins on the PCB:

  • VCC = VCC

  • GND = GND

  • SWIO = PA13

  • SWCLK = PA14

Flashing

You can use minichlink or wlink to flash the board. Once either has been set up, build and flash applications as usual (see Building an Application and Run an Application for more details).

Debugging

This board can be debugged via OpenOCD or minichlink.

References