Date: Tue, 11 Oct 2022 13:42:46 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Daniel O'Connor <darius@dons.net.au> Cc: freebsd-usb@freebsd.org Subject: Re: Failed control transfer Message-ID: <a4ea1837-dcb8-0338-b3b3-f32147732b5e@selasky.org> In-Reply-To: <75c25972-e998-c7f2-578f-31a364554fd7@selasky.org> References: <7FF9CB5C-26B0-4DBA-B7E4-80DBF50A80BB@dons.net.au> <7e1de023-094f-4247-146d-9e8f498ae0e7@selasky.org> <DF88E7EE-B986-4853-9CF8-9047B084F03C@dons.net.au> <577bcb8a-b2ab-8d38-b657-0d085a8a2df6@selasky.org> <C11CE896-7F67-4C2D-8194-22D4C218DD91@dons.net.au> <75c25972-e998-c7f2-578f-31a364554fd7@selasky.org>
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On 10/11/22 13:31, Hans Petter Selasky wrote: > On 10/11/22 13:13, Daniel O'Connor wrote: >> >> >>> On 11 Oct 2022, at 21:30, Hans Petter Selasky <hps@selasky.org> wrote: >>> >>> On 10/11/22 12:05, Daniel O'Connor wrote: >>>> In [6]: d.ctrl_transfer(0xc0, 176, 0x42, 0, 256, 1000) >>> >>> 255 and not 256 bytes! >> >> Same result :( >> >> -- >> Daniel O'Connor >> "The nice thing about standards is that there >> are so many of them to choose from." >> -- Andrew Tanenbaum >> > > What does "usbdump -i usbusX -f Y -s 65536 -vvv" say? > Maybe you should trace using usbdump from the start of attachment. Maybe some USB request gets the device into a bad state and it starts returning STALL for all new requests! The STALL message comes straight from the USB device! --HPS
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