FreeRTOS Milk-V Duo 256M Test Report

Test Environment

Operating System Information

• Download Link: https://github.com/milkv-duo/duo-buildroot-sdk/releases
• Reference Installation Document: https://github.com/milkv-duo/duo-buildroot-sdk
  • FreeRTOS: https://milkv.io/zh/docs/duo/getting-started/rtoscore

Hardware Information

• Milk-V Duo 256M
• A USB-A to C or USB-C to C Cable
• A microSD card
• A USB to UART Debugger (e.g., CH340, CH341, FT2232)
• Optional: Milk-V Duo IOB (Baseboard)

Installation Steps

RTOS is included in the BuildRoot SDK.

Building the mailbox-test Binary

Clone the duo-examples repository locally and build it.

sudo apt install -y wget git make
git clone https://github.com/milkv-duo/duo-examples --depth=1
cd duo-examples
source envsetup.sh
cd mailbox-test
make

Copy the Built Binary into the Image

First, check the current available loop devices:

sudo losetup -f

The output should be:

$ sudo losetup -f
/dev/loop16

Next, mount the downloaded image and copy the compiled binary into it:

sudo losetup /dev/loop16 milkv-duo256m-v1.1.0-2024-0410.img
sudo kpartx -av /dev/loop16
sudo mount /dev/mapper/loop16p2 /mnt
cp ~/duo-examples/mailbox-test/mailbox_test /mnt/root/
sudo umount /mnt
sudo kpartx -d /dev/loop1
sudo losetup -d /dev/loop16 

Then flash the modified image:

sudo dd if=milkv-duo256m-v1.1.0-2024-0410.img of=/dev/sdc bs=4M status=progress oflag=direct

At this point, the storage card is ready. Insert it into the development board and prepare to boot.

Logging into the System

Logging into the system via the serial port.

Default Username: root Default Password: milkv

Expected Results

The system boots normally, and after logging in through the onboard serial port, running the mailbox_test binary will cause the onboard blue LED to light up and then turn off.

(Standby state: blue LED blinks)

Actual Results

The system booted normally, successfully logged in via the onboard serial port. The mailbox_test ran successfully, and the onboard LED lit up and then turned off.

Boot Log

The authenticity of host '192.168.42.1 (192.168.42.1)' can't be established.
ED25519 key fingerprint is SHA256:JrNwim4ZPbnSw+aC9orl+VPBoRBkXxMatEDjRSq8SSw.
This key is not known by any other names.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.42.1' (ED25519) to the list of known hosts.
root@192.168.42.1's password: 
[root@milkv-duo]~# ./mailbox_test 
C906B: cmd.param_ptr = 0x4
C906B: cmd.param_ptr = 0x3
[root@milkv-duo]~# exit

Screen recording:

Test Criteria

Successful: The actual result matches the expected result.

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

Test Conclusion

Test successful.