Date: Fri, 24 Mar 2023 10:51:35 +0100 From: Milan Obuch <freebsd-usb@dino.sk> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-usb@freebsd.org Subject: Re: Which serial driver for the development board? Message-ID: <20230324105135.11dc8859@zeta.dino.sk> In-Reply-To: <c7f59377-fd5f-344f-b292-4689153d1b00@selasky.org> References: <20230323130418.5ba9954f@zeta.dino.sk> <88f9b5a4-1e7f-ea9e-e170-888a8713a060@selasky.org> <20230323170028.186d77ed@zeta.dino.sk> <27d8da5f-f2f8-af1d-8300-4d7ccb35744b@selasky.org> <20230323220342.76a6c37a@zeta.dino.sk> <c7f59377-fd5f-344f-b292-4689153d1b00@selasky.org>
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On Fri, 24 Mar 2023 09:43:29 +0100 Hans Petter Selasky <hps@selasky.org> wrote: > On 3/23/23 22:03, Milan Obuch wrote: > > # usbconfig -d ugen0.5 dump_all_desc > > ugen0.5: <vendor 0x1d50 product 0x6141> at usbus0, cfg=255 md=HOST > > spd=FULL (12Mbps) pwr=ON (100mA) > > > > bLength = 0x0012 > > bDescriptorType = 0x0001 > > bcdUSB = 0x0200 > > bDeviceClass = 0x0002 <Communication device> > > bDeviceSubClass = 0x0000 > > bDeviceProtocol = 0x0000 > > bMaxPacketSize0 = 0x0020 > > idVendor = 0x1d50 > > idProduct = 0x6141 > > bcdDevice = 0x0000 > > iManufacturer = 0x0000 <no string> > > iProduct = 0x0000 <no string> > > iSerialNumber = 0x0000 <no string> > > bNumConfigurations = 0x0001 > > > > I think there is some bug in device's firmware, but as MacOS was > > able to communicate with it out-of-the-box, no configuration > > necessary on MAC, there should be a way. > > Hi, > > You may need to run "usbdump" before plugging the device to figure > out exactly what goes wrong. > > cfg=255 means there is a permanent issue using the USB control > endpoint data channel. Yes - likely a bug in the firmware that it > does not handle error conditions properly. > > --HPS > I found how I can produce basic USB dumps yesterday. Just a quick question - could using '-s <snaplen>' option help produce better dumps? I need some time to prepare the dumps, using '-w <file>' to save them for examination, I'd just like to know if there is anything special to use for dump in addition to '-d 0.5' for device filter. Regards, Milan
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