Re: Failed control transfer
- Reply: Daniel O'Connor: "Re: Failed control transfer"
- In reply to: Hans Petter Selasky : "Re: Failed control transfer"
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Date: Tue, 11 Oct 2022 11:42:46 UTC
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