RT-Thread CH32V208 Test Report

Test Environment

Operating System Information

• Source Code Link: Community-PIO-CH32V/ch32-pio-projects
• Reference Installation Document:
  • PlatformIO Core: PlatformIO Installation Guide
  • PlatformIO CH32V: Installation Guide

Hardware Information

• CH32V208WBU6-EVT-R0-1v4
• 1 USB to UART debugger
• 1 WCH-Link(E)

Installation Steps

Install PlatformIO Core

You can first check if the package manager includes platformio-core package. If not, you can use the installation script:

curl -fsSL -o get-platformio.py https://raw.githubusercontent.com/platformio/platformio-core-installer/master/get-platformio.py
python3 get-platformio.py

PlatformIO Environment Configuration

Install CH32V development environment:

pio pkg install -g -p https://github.com/Community-PIO-CH32V/platform-ch32v.git

Add udev rules and apply them (may need to change the GROUP based on the distribution):

curl -fsSL https://raw.githubusercontent.com/platformio/platformio-core/develop/platformio/assets/system/99-platformio-udev.rules | sudo tee /etc/udev/rules.d/99-platformio-udev.rules
cat << EOF | sudo tee -a /etc/udev/rules.d/99-platformio-udev.rules
SUBSYSTEM=="usb", ATTR{idVendor}="1a86", ATTR{idProduct}=="8010", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}="4348", ATTR{idProduct}=="55e0", GROUP="plugdev"
SUBSYSTEM=="usb", ATTR{idVendor}="1a86", ATTR{idProduct}=="8012", GROUP="plugdev"
EOF
sudo udevadm control --reload-rules
sudo udevadm trigger

Add user groups:

• Debian-based systems:

sudo usermod -a -G dialout $USER
sudo usermod -a -G plugdev $USER

• Arch-based systems:

sudo usermod -a -G uucp $USER
sudo usermod -a -G lock $USER

Prepare Project Repository

Clone the relevant repositories:

git clone https://github.com/Community-PIO-CH32V/platform-ch32v.git

Code Compilation

Compile the code using pio:

cd platform-ch32v/examples/hello-world-rt-thread
pio run

Flashing Image

Once WCH-Link(E) is connected to the SWD debug port, use pio to flash the image:

pio run --target upload

pio will automatically detect the development board. If flashing is unsuccessful, you can try to specify manually:

pio run -e your_board --target upload

Add Development Board Series

If using the CBU6 series, please ignore This is because other chips are not in the default chip list, so we need to add them manually. You can find the corresponding json file for your board in platform-ch32v/boards.

cat << EOF | tee -a platformio.ini
[env:your_board]
board = your_board
EOF

Common Issues

• Error: error writing to flash at address 0x00000000 at offset 0x00000000
  • This is due to the low firmware version of the WCH-Link. (See important-notices).
  • Please use the WCH-Link Toolchain to connect once to W2 with CH-Link for automatic update. Currently, this tool is only available for Windows
• Error: Read-Protect Status Currently Enabled
  • This is due to the chip’s write protection being enabled. On Windows, we can use the WCH-Link Toolchain to disable protection, and on Linux, OpenOCD can be used:

cd ~/.platformio/packages/tool-openocd-riscv-wch/bin
./openocd -f wch-riscv.cfg -c init -c halt -c "flash protect wch_riscv 0 last  off " -c exit
cd -

Logging into the System

Connect to the development board via serial port.

Expected Results

The system should start up normally, and information should be viewable through the onboard serial port.

Actual Results

The system starts up normally, and information can be viewed through the onboard serial port.

Boot Log

Screen recording (from compilation to startup):

The MCU in the log below is incorrect, as the example hardcoded that string. See main.c#L:65 for reference. The DeviceID confirms that it is indeed running on the target board.

 \ | /
- RT -     Thread Operating System
 / | \     3.1.3 build Apr 25 2024
 2006 - 2019 Copyright by rt-thread team

 MCU: CH32V307
SystemClk:96000000
DeviceID: 0000051c
 www.wch.cn
msh >

Test Criteria

Successful: The actual result matches the expected result.

Failed: The actual result does not match the expected result.

Test Conclusion

Test successful.