SPresense SDK on WSL2 ?

[jln 0]

Since it now seems possible to connect USB devices to a Linux distribution running on WSL2 with Windows 11 (see https://docs.microsoft.com/en-us/windows/wsl/connect-usb), do you have any advice about installing SPresence SDK on WSL2 for Windows 11 ?

[KamilTomaszewski]

Hi @jln-0,

If you have already installed WSL2, now to setup Spresense environment you have to follow instructions for Linux: https://developer.sony.com/develop/spresense/docs/sdk_set_up_en.html#_setup_for_linux

Best Regards,
Kamil Tomaszewski

[jln 0]

@KamilTomaszewski , Thank you very much for your reply.

Using the setup from the Microsoft link on how to access USB devices from WSL2, I encounter a problem. The 'lsusb' command on the Ubuntu distribution that runs on WSL2, the Spresence board indeed appears as :

Bus 001 Device 003: ID 10c4:ea60 Silicon Labs CP210x UART Bridge

While the PowerShell "usbipd wsl list" command shows that it binds to COM5 as :

1-1 10c4:ea60 Silicon Labs CP210x USB to UART Bridge (COM5) Attached - Ubuntu

But unfortunately, I find no corresponding entry on /dev/ttyS5 on the WSL2 Ubuntu side for me to flash the firmware on the board.

Or is the board seen through another /dev/tty... ?

Do you have any suggestion about what I should do ?

Best regards

[jln 0]

It turns out that the USB device is attached to ttyUSB0, but I still can't flash the firmware as the port can't be opened, complaining that the file is not found...

/spresense/sdk$ lsusb -t

/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=vhci_hcd/8p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=vhci_hcd/8p, 480M
|__ Port 1: Dev 4, If 0, Class=Vendor Specific Class, Driver=cp210x, 12M

*/spresense/sdk$ dmesg | grep "cp21.attached"

[ 1322.831808] usb 1-1: cp210x converter now attached to ttyUSB0
[ 1371.440873] usb 1-1: cp210x converter now attached to ttyUSB0
[10484.027067] usb 1-1: cp210x converter now attached to ttyUSB0

/spresense/sdk$ tools/flash.sh -c /dev/ttyUSB0 nuttx.spk

Cannot open port : /dev/ttyUSB0
could not open port '/dev/ttyUSB0': FileNotFoundError(2, '...', None, 3)

/spresense/sdk$ ls -l /dev/ttyUSB0
crw------- 1 root root 188, 0 Jun 24 11:40 /dev/ttyUSB0

Additional comment : the 'flash' command does not work as sudo either, and I added my user name to the 'dialout' group.

[rauna]

@jln-0 If you're using Windows WSL2, the port will usually be something like COM7. I use Arduino IDE on Windows to check for my spresense's port.

[jln 0]

@rauna Thank you very much for your kind reply.
The board appears as /dev/ttyUSB0

[gyps]

@jln-0 I'm sure you have already solved this problem, but in wsl2, you can access /dev/tty by using the sudo command.

$ sudo ./tools/flash.sh -c /dev/ttyUSB0 nuttx.spk

$ sudo screen /dev/ttyUSB0

[CamilaSouza]

Hello,
@gyps, @jln-0
Have you been able to successfully flash spresense bootloader using wsl2?

@Jolle has experienced the following error, in case you have seen that one before:
"Error creating child process!
CreateProcessW: Incorrect function."

[jln 0]

Hi @CamilaSouza Unfortunately, I still get the following error message when trying to flash the firmware using command "sudo ./tools/flash.sh -c /dev/ttyUSB0 nuttx.spk" :

Cannot open port : /dev/ttyUSB0
could not open port '/dev/ttyUSB0': FileNotFoundError(2,...

[gyps]

@jln-0 Have you tried the solutions described here?https://forum.developer.sony.com/topic/773/developing-with-spresense-sdk-on-wsl2

[CamilaSouza]

Nice catch, @gyps !

[jln 0]

@gyps Thank you very much, it works !