.. zephyr:board:: bluepillplus_ch32v203

Overview

The WeActStudio_ BluePill Plus CH32V203 hardware provides support for QingKe V4B 32-bit RISC-V processor and the following devices:

CLOCK
:abbr:GPIO (General Purpose Input Output)
:abbr:NVIC (Nested Vectored Interrupt Controller)
:abbr:UART (Universal Asynchronous Receiver-Transmitter)

The board is equipped with two LEDs and three Buttons. User can use one of the LEDs and one of the buttons. The WCH webpage on CH32V203_ contains the processor's manuals. The WeActStudio webpage on BPP_ contains the BluePill's schematic.

Hardware

The QingKe V4B 32-bit RISC-V processor of the BluePill Plus CH32V203 is clocked by an external 8 MHz crystal or the internal 8 MHz oscillator and runs 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

.. zephyr:board-supported-hw::

Connections and IOs

LED

LED0 = Blue User LED

Button

SW0 = User Button

Programming and Debugging

Applications for the bluepillplus_ch32v203 board can be built and flashed in the usual way (see :ref:build_an_application and :ref:application_run 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 to flash the board. Once minichlink has been set up, build and flash applications as usual (see :ref:build_an_application and :ref:application_run for more details).

Here is an example for the :zephyr:code-sample:blinky application.

.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: bluepillplus_ch32v203 :goals: build flash

Debugging

This board can be debugged via OpenOCD or minichlink.

References

.. target-notes::

.. _WeActStudio: https://github.com/WeActStudio .. _WCH webpage on CH32V203: https://www.wch-ic.com/products/CH32V203.html .. _WeActStudio webpage on BPP: https://github.com/WeActStudio/WeActStudio.BluePill-Plus-CH32