USB PID/VID

[sstaub]

Is there a way to change PID / VID of the USB Serial interface?

[john-4]

I'd like to know this as well, probably for the same reason as you sstaub, emulating the old Arduino boards compatible with console Lighthack.

Typically under Arduino compatibles (e.g. Teensy) this is done in a "boards.txt", and in Earle's arduino-pico core that file is seemingly located at [...]\packages\rp2040\hardware\rp2040<version>\boards.txt .

By editing that file, I've had success spoofing my board's PID to Lighthack's, but not the VID. The usual fixes".build.vid=0x2341" ".build.pid=0x0043" didn't do anything. However, by changing ".build.usbpid=-DSERIALUSB_PID=0x0043" from its original value, I was able to spoof my usb-serial PID. There is no corresponding entry like "build.usbvid" though, therefore it looks like no current way to spoof the VID?

I'd really appreciate an official answer on this, as the RP2040 size, cost, and connectivity make it very appealing for Lighthack. In the meantime I'll keep tinkering, it may be possible to spoof it using the regular boards.txt method when running the new official mbed-based rp2040 core.

[earlephilhower]

It's pretty straightforward to add this #define override. Basically the same logic as is there for the PID. Would you like to make a PR?

[john-4]

Wow, that was quick!

I'm afraid I'm not familiar enough with the buildchain to understand where to make that definition properly. And I've never made a pull request on someone else's project before!

If you could let me know where/what to edit, I'll check that it works for my Eos console and then try a PR?

Thanks again!

[earlephilhower]

See

arduino-pico/cores/rp2040/RP2040USB.cpp

Lines 48 to 52 in 5be4053

	#ifdef SERIALUSB_PID
	#define USBD_PID (SERIALUSB_PID)
	#else
	#define USBD_PID (0x000a) // Raspberry Pi Pico SDK CDC
	#endif

Do the same kind of ifdef/etc. for

arduino-pico/cores/rp2040/RP2040USB.cpp

Line 46 in 5be4053

#define USBD_VID (0x2E8A) // Raspberry Pi

and you should be all set.

[earlephilhower]

And to make a PR you'd fork this repo from the GUI, clone it on your machine, do the edit and commit to a new branch. The push the branch to your repo and go back to the web UI. In your code (main) repo page you should see a button to let you make a PR on the recent branch push.

[minisbett]

Hey! Sorry for reviving this old discussion, but I looked up the current implementation of these defines and from my understanding I can override both the VID and PID by adding the build flags -DUSBD_VID=0x0727 -DUSBD_PID=0x0727, however this did not override anything. How can I override this properly?