topic Implement MS OS descriptor functionality in virtual printer bm example in MCUXpresso IDE

Implement MS OS descriptor functionality in virtual printer bm example

shabaka101694 — Thu, 31 Aug 2023 17:02:01 GMT

Hello,

We are trying to use the virtual printer bm example specifically : lpcexpresso_54s018_dev_printer_virtual_plain_text_bm example.

We have the basic functionality working, but need to add MS OS descriptor functionality so that the USB device registers as a WinUSB and therefore no driver signing is necessary.

We are seeing Windows request the stringDescriptor at index 0xEE. We are having trouble getting Windows to request the other two needed descriptors. Specifically :

the WINUSB_ExtendedCompatId Descriptor

and

the WINUSB_ExtendedProperty_InterfaceGUID_Descriptor

Is it possible to provide some help/guidance on how we can get Windows to request these two descriptors using the previously mentioned example as a starting point

Thanks

Victor

Re: Implement MS OS descriptor functionality in virtual printer bm example

xiangjun_rong — Fri, 01 Sep 2023 02:18:38 GMT

Hi,

Regarding the question about MS OS descriptor functionality in virtual printer bm example, I have asked AE team, I will answer you after I get response.

XiangJun Rong

Re: Implement MS OS descriptor functionality in virtual printer bm example

Xu_Zhang — Wed, 13 Sep 2023 08:01:34 GMT

hi，shabaka101694

You can refer to this question and answer, hope it will help you.

https://community.nxp.com/t5/MCUXpresso-General/LPC54S018-WinUSB-driver-signing/td-p/1703179

Xu Zhang