Date: Thu, 10 Mar 2022 13:52:53 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Archimedes Gaviola <archimedes.gaviola@gmail.com> Cc: freebsd-arm@freebsd.org Subject: Re: Raspberry Pi 3B USB Printing Issue Message-ID: <8226461b-5740-9c19-0575-2740bd952e16@selasky.org> In-Reply-To: <CAJFbk7EAjrQG5Kj_upVKW72opOS%2B8d63VrMnQdLxcJjUcfsd=g@mail.gmail.com> References: <CAJFbk7EzSfPNbaGxiweKrivwNrKXCPVzA1b7_=0_bTvbs8oBow@mail.gmail.com> <7c67118e-f6ec-c87d-9a81-3ee6a5952f49@selasky.org> <CAJFbk7GYbLAFTJY077Nzh3CTBJM6bk8swr4AkgGMaukCxrfcHQ@mail.gmail.com> <60f98b10-dcdc-cdf4-3d7a-fe9fd4dff223@selasky.org> <CAJFbk7EAjrQG5Kj_upVKW72opOS%2B8d63VrMnQdLxcJjUcfsd=g@mail.gmail.com>
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On 3/10/22 13:37, Archimedes Gaviola wrote:
> On Thu, Mar 10, 2022 at 3:47 PM Hans Petter Selasky <hps@selasky.org> wrote:
>
>> On 3/10/22 00:24, Archimedes Gaviola wrote:
>>> On Thu, Mar 10, 2022 at 4:14 AM Hans Petter Selasky <hps@selasky.org>
>> wrote:
>>>
>>>> On 3/9/22 18:55, Archimedes Gaviola wrote:
>>>>> Hi,
>>>>>
>>>>> I have an Epson printer connected to one of the USB ports of my RPi 3B.
>>>> The
>>>>> printer is detected as a ugen(4) driver and then I have a text file -
>>>>> myfile3.txt which contains 10 lines of repeating sentences.
>>>>>
>>>>> freebsd@generic:~ % dmesg | grep EPSON
>>>>> ugen1.4: <EPSON EPSON UB-U03II> at usbus1
>>>>>
>>>>> freebsd@generic:~ % cat myfile3.txt
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>> The quick brown fox jumps over the lazy dog.
>>>>>
>>>>> freebsd@generic:~ % cat myfile3.txt > /dev/usb/1.4.1
>>>>>
>>>>> I print the file successfully through device file redirection with cat
>>>>> command as described above. However, there were times that printing
>>>> seemed
>>>>> to suspend and withhold especially when my RPi 3B system got idle for
>>>> some
>>>>> period of time. Suspended or withhold in such a way that out of the 10
>>>>> lines there were only 2-3 lines to be printed in the paper. So, the
>> only
>>>>> remedy I have for now is to reboot the system to be able to get back to
>>>>> normal printing. I'm using the 14.0-CURRENT #0
>> main-n253384-45c23c2608e:
>>>>> Thu Feb 24 09:18:58 UTC 2022 and my RPi 4B does not manifest this
>>>> behavior
>>>>> using this same 14.0-CURRENT version. Any idea what's going on?
>>>>>
>>>>> I found these sysctl knobs thinking if some tweaks would help but not
>>>> sure
>>>>> what are the exact settings beyond these defaults.
>>>>>
>>>>> hw.usb.timings.port_resume_delay: 40
>>>>> hw.usb.timings.port_powerup_delay: 300
>>>>> hw.usb.timings.port_reset_recovery: 10
>>>>> hw.usb.timings.port_root_reset_delay: 200
>>>>> hw.usb.timings.port_reset_delay: 50
>>>>>
>>>>> (Resend this message without dmesg and sysctl outputs as files are
>> quite
>>>>> big, sorry I didn't notice it.)
>>>>>
>>>>
>>>> Hi,
>>>>
>>>> Why are you not using /dev/ulpt<N> ?
>>>>
>>>> /dev/usb/1.4.1 is the raw BULK endpoint.
>>>>
>>>
>>>
>>> Hi Hans,
>>>
>>> The ulpt(4) driver isn't detected with this Epson printer. Only my other
>>> printer which is an Xprinter brand is able to get detected with ulpt(4).
>>>
>>
>> Hi,
>>
>> Is it correctly detected if you the VID and PID to
>> /usr/src/sys/dev/usb/serial/ulpt.c ?
>>
>
> Hi Hans,
>
> Not sure how to make the current ugen(4) driver into ulpt(4). Is there a
> need to disable ugen(4) and recompile the kernel and let ulpt(4) driver
> loaded and enabled? As far as vendor ID and product ID of this Epson
> printer are concerned, these are 0x04b8 and 0x0200 respectively. I
> checked it with usbconfig below. I checked also
> /usr/src/sys/dev/usb/usbdevs file and it seems only the vendor ID is
> present but no product ID on these particular model which is TM-U220B.
>
> root@generic:~ # usbconfig -u 1 -a 4 dump_device_desc
> ugen1.4: <EPSON EPSON UB-U03II> at usbus1, cfg=0 md=HOST spd=FULL (12Mbps)
> pwr=ON (10mA)
>
> bLength = 0x0012
> bDescriptorType = 0x0001
> bcdUSB = 0x0110
> bDeviceClass = 0x0000 <Probed by interface class>
> bDeviceSubClass = 0x0000
> bDeviceProtocol = 0x0000
> bMaxPacketSize0 = 0x0008
> idVendor = 0x04b8
> idProduct = 0x0202
> bcdDevice = 0x0200
> iManufacturer = 0x0001 <EPSON>
> iProduct = 0x0002 <EPSON UB-U03II>
> iSerialNumber = 0x0003 <20160118193053218M03C>
> bNumConfigurations = 0x0001
>
>
>>
>> When you use the printer via the BULK endpoint, there might be a missing
>> flush packet, to flush all the printed text. This happens when the
>> payload length is a multiple of the wMaxPacketSize.
>>
>
> Okay this is noted but what I found lately in usbdump are the presence of
> ioerrors ERR=IOERROR in capturing the ugen1.4.1 device while printing were
> the printed outputs are intermittent. This time I'm going to use the word
> "intermittent" as I don't have any idea when this occurs. It just behaves
> anytime without any warnings or notices to the system not even logs in the
> dmesg. On the other hand, normal printing will prompts with ERR=0 with
> complete outputs.
>
> root@generic:~ # usbdump -d ugen1.4.1 -v
> 19:14:11.861532 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:14:12.147498 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:14:23.491555 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:14:23.777222 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:14:32.325817 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:14:32.612222 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:18:46.334624 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:18:46.620474 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:18:53.975846 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:18:54.262223 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:21:38.505907 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:21:38.792224 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:22:06.235833 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:22:06.521723 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:22:16.344551 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:22:16.630472 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:22:31.625887 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:22:31.911723 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:22:40.325843 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:22:40.612223 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:23:53.484761 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:23:53.514428 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,
> frame[0] WRITE 128 bytes
> 19:23:57.055902 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:23:57.084227 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:00.244450 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:00.274206 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:03.974541 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:04.004203 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 144 bytes
> 19:24:06.975851 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:07.004209 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:09.605790 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:09.633980 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:12.385923 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:12.413760 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:15.224542 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:15.253771 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:18.174530 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:18.203756 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:21.125927 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:21.153752 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 136 bytes
> 19:24:24.275854 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:24.303756 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 144 bytes
> 19:24:27.485857 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:27.772223 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:24:36.194633 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:36.223750 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:39.115831 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:39.143771 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 144 bytes
> 19:24:41.855851 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:41.883758 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:44.215882 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:44.243755 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:47.634603 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:47.663751 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:50.324493 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:50.353755 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:52.864637 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:52.893756 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 144 bytes
> 19:24:54.944528 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:54.973743 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:24:57.254498 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:24:57.537227 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=0
> frame[0] WRITE 1264 bytes
> 19:25:06.024607 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:06.053747 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:08.214550 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:08.243749 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 144 bytes
> 19:25:10.355858 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:10.383752 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:12.435851 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:12.463752 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:14.574555 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:14.603740 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:17.814561 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:17.844015 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:19.924529 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:19.954029 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:28.075867 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:28.104036 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 144 bytes
> 19:25:30.195823 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:30.224035 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:32.574567 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:32.604028 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:34.624522 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:34.654016 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 128 bytes
> 19:25:36.895889 usbus1.4
> SUBM-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=1264,IVAL=0
> frame[0] WRITE 1264 bytes
> 19:25:36.924007 usbus1.4
> DONE-BULK-EP=00000001,SPD=FULL,NFR=1,SLEN=0,IVAL=0,ERR=IOERROR
> frame[0] WRITE 144 bytes
>
> 86 packets captured
> 41546 packets received by filter
> 0 packets dropped by kernel
>
> What could be these ioerrors? As I am also firm that my Epson printer's
> status is good and this only happens in RPi 3B but not RPi 4B. My RPi 4B
> using the same printer and ugen(4) driver is very stable.
Hi,
IOERROR usually means an electrical error. The RPI3B will use a
transaction translator for the FULL speed traffic, which is driven by
software. Maybe there is a bug in the HC driver,
"dev/usb/controller/dwc_otg.c". There are some sysctls to enable full HC
debugging, see hw.usb.xxx.debug=17 .
Is the device self-powered?
Try something like this:
> diff --git a/sys/dev/usb/serial/ulpt.c b/sys/dev/usb/serial/ulpt.c
> index c566da92437..d663800f4fc 100644
> --- a/sys/dev/usb/serial/ulpt.c
> +++ b/sys/dev/usb/serial/ulpt.c
> @@ -499,6 +499,9 @@ static const STRUCT_USB_HOST_ID ulpt_devs[] = {
> {USB_IFACE_CLASS(UICLASS_PRINTER),
> USB_IFACE_SUBCLASS(UISUBCLASS_PRINTER),
> USB_IFACE_PROTOCOL(UIPROTO_PRINTER_1284)},
> +
> + /* Epson printer */
> + {USB_VPI(USB_VENDOR_EPSON, USB_PRODUCT_EPSON_TMU220B, 0)},
> };
>
> static int
> diff --git a/sys/dev/usb/usbdevs b/sys/dev/usb/usbdevs
> index 01c25d7c096..632b8f19610 100644
> --- a/sys/dev/usb/usbdevs
> +++ b/sys/dev/usb/usbdevs
> @@ -1941,6 +1941,7 @@ product EPSON 1270 0x0120 Perfection 1270 scanner
> product EPSON 2480 0x0121 Perfection 2480 scanner
> product EPSON 3590 0x0122 Perfection 3590 scanner
> product EPSON 4990 0x012a Perfection 4990 Photo scanner
> +product EPSON TMU220B 0x0200 TM-U220B
> product EPSON CRESSI_EDY 0x0521 Cressi Edy diving computer
> product EPSON N2ITION3 0x0522 Zeagle N2iTion3 diving computer
> product EPSON STYLUS_875DC 0x0601 Stylus Photo 875DC Card Reader
--HPS
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