.. zephyr:board:: linkw

Overview

The WCH_ LinkW hardware provides support for QingKe V4C 32-bit RISC-V processor and the following devices:

CLOCK
:abbr:GPIO (General Purpose Input Output)
:abbr:NVIC (Nested Vectored Interrupt Controller)

The board is equipped with two LEDs and two Buttons. The WCH webpage on CH32V208_ contains the processor's manuals. The WCH webpage on LinkW_ contains the LinkW's schematic.

Hardware

The QingKe V4C 32-bit RISC-V processor of the WCH LinkW is clocked by an external 32 MHz crystal or the internal 8 MHz oscillator and runs up to 144 MHz. The CH32V208 SoC Features 4 USART, 4 GPIO ports, 2 SPI, 2 I2C, ADC, RTC, CAN, 2 USB Device, USB Host, OPA, ETH with PHY, several timers, and BLE 5.3.

Supported Features

.. zephyr:board-supported-hw::

Connections and IOs

LED

LED0 = Green Mode LED
LED1 = Blue Activity LED

Button

SW0 = Mode Select Button (Active Low)
SW1 = Bootstrap Button (Active High)

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the linkw board target 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: linkw :goals: build flash

Debugging

This board can be debugged via OpenOCD or minichlink.

References

.. target-notes::

.. _WCH: http://www.wch-ic.com .. _WCH webpage on CH32V208: https://www.wch-ic.com/products/CH32V208.html .. _WCH webpage on LinkW: https://www.wch-ic.com/products/WCH-Link.html