WCH CH32V003EVT

Overview

The WCH [1] CH32V003EVT hardware provides support for QingKe 32-bit RISC-V2A processor and the following devices:

  • CLOCK

  • GPIO

  • NVIC

The board is equipped with two LEDs. The WCH webpage on CH32V003 [2] contains the processor’s information and the datasheet.

Hardware

The QingKe 32-bit RISC-V2A processor of the WCH CH32V003EVT is clocked by an external crystal and runs at 48 MHz.

Supported Features

The ch32v003evt board target supports the following hardware features:

Interface

Controller

Driver/Component

CLOCK

on-chip

clock_control

GPIO

on-chip

gpio

PWM

on-chip

pwm

PINCTRL

on-chip

pinctrl

TIMER

on-chip

timer

UART

on-chip

uart

Other hardware features have not been enabled yet for this board.

Connections and IOs

LED

  • LED1 = Unconnected. Connect to an I/O pin (PD4).

Programming and Debugging

Applications for the ch32v003evt board target 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 (see image):

  • VCC = VCC (do not power the board from the USB port at the same time)

  • GND = GND

  • SWIO = PD1

Flashing

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

Here is an example for the Blinky application.

# From the root of the zephyr repository
west build -b ch32v003evt samples/basic/blinky
west flash

Debugging

This board can be debugged via OpenOCD or minichlink.

Testing the LED on the WCH CH32V003EVT

There is 1 sample program that allow you to test that the LED on the board is working properly with Zephyr:

samples/basic/blinky

You can build and flash the examples to make sure Zephyr is running correctly on your board. The button and LED definitions can be found in boards/wch/ch32v003evt/ch32v003evt.dts.

References