FreeRTOS CH32V303 Test Report

Test Environment

Operating System Information

• Source Code Link: https://github.com/Community-PIO-CH32V/ch32-pio-projects
• Reference Installation Document:
  • PlatformIO Core: https://docs.platformio.org/en/latest/core/installation/index.html
  • PlatformIO CH32V: https://pio-ch32v.readthedocs.io/en/latest/installation.html

Hardware Information

• CH32V303VCT6-EVT-R0-1v0
• A USB to UART debugger
• A WCH-Link(E)

Installation Steps

Install PlatformIO Core

You can first check if the package manager has a package like platformio-core. If not, you can install it using 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 the 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 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

Set Up Project Repository

Clone the relevant repository:

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

Code Compilation

Compile the code using pio:

cd platform-ch32v/examples/blinky-freertos
pio run

Flashing Image

Once confirmed that WCH-Link(E) is connected to the SWD debugging port, flash the image using pio:

pio run --target upload

If the flashing fails, you can try to specify the board manually:

pio run -e your_board --target upload

Add Development Board Series

Ignore this if you are using the C8T6 series This is because other chips are not in the default chip list, so we need to add them manually. You can find the json name corresponding to 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 a low firmware version of WCH-Link. (See important-notices).
  • Please use WCH-Link Utility to connect once with CH-Link on W2 to automatically update. This tool currently only has a Windows version.
• Error: Read-Protect Status Currently Enabled
  • This is caused by write protection being enabled on the chip. On Windows, we can use WCH-Link Utility to remove the 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 System

Connect to the development board via serial port.

Expected Results

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

Actual Results

The system boots up normally, with information viewable through the onboard serial port.

Boot Log

Screen recording (from compilation to startup):

SystemClk:96000000
ChipID: 30300514
FreeRTOS Kernel Version:V10.4.6
task2 entry
task1 entry
task1 entry
task2 entry
task1 entry

Test Criteria

Successful: The actual result matches the expected result.

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

Test Conclusion

Test successful.