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<div dir="auto">Hi Stuart,</div><div dir="auto">Thank you for the link. It does seem what I am looking for. Are you aware of any similar standard created for a serial device? I have a working CDC usb setup, which is why I am asking. If required, will switch to HID though.</div><div id="aqm-signature" dir="auto" style="color: black; font-family: Arial, Myriad, "Liberation Sans", sans-serif;"><div dir="auto"><br></div><div dir="auto">--</div><div dir="auto">Łukasz Przeniosło</div></div><div dir="auto"><br></div>
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<div dir="auto">On March 20, 2023 15:25:09 Stuart Henderson via Nut-upsdev <nut-upsdev@alioth-lists.debian.net> wrote:</div>
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<div dir="auto">On 2023-03-20, Łukasz Przeniosło <lukasz@przenioslo.com> wrote:</div>
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<div dir="auto">I would like to create a new UPS device that communicate with the outer=20</div>
<div dir="auto">world over USB. The USB protocol can be either CDC serial or HID. I am=20</div>
<div dir="auto">looking for an existing protocol that can be legally used by me, so I=20</div>
<div dir="auto">don't need to come up with a new protocol + ask anyone to add any new=20</div>
<div dir="auto">code to the NUT project. It should also be well documented, since I need=20</div>
<div dir="auto">to reimplement it in my device.</div>
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<div dir="auto">What would be the best approach here? I would appreciate all help and=20</div>
<div dir="auto">feedback!</div>
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<div dir="auto">Many of the HID-based UPS use the Power Device Class, docs are at</div>
<div dir="auto">https://usb.org/sites/default/files/pdcv11.pdf</div>
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