Date: Wed, 21 Dec 2022 09:52:47 +0100 From: Hans Petter Selasky <hps@selasky.org> To: Milan Obuch <freebsd-usb@dino.sk>, freebsd-usb@freebsd.org Subject: Re: USB logic analyzer problem Message-ID: <f2140d0d-ffe5-1444-c706-d8b4b9a51c9e@selasky.org> In-Reply-To: <20221221084423.71de3559@zeta.dino.sk> References: <20221221084423.71de3559@zeta.dino.sk>
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On 12/21/22 08:44, Milan Obuch wrote: > Hi, > > recently I've got two simple USB logic analyzers (one with analog > channel as well), and I am trying to get them working under FreeBSD. > They are > > ugen0.x: <vendor 0x08a9 product 0x0014> at usbus0 > ugen0.y: <vendor 0x0925 product 0x3881> at usbus0 > > as seen on plugging in USB port (x, y varies on attempts). These should > be handled by sigrok and pulseview (science/sigrok* and > science/pulseview ports). While building and installing ports was > relatively easy, I did not managed them to work correctly. > > Looking at sigrok wiki, both should work with fx2lafw driver, info at > > https://sigrok.org/wiki/AZDelivery_Logic_Analyzer/Info > https://sigrok.org/wiki/Noname_LHT00SU1/Info > > At first, I thought problem is access rights, as all devices are > created with mode crw-------, uid root. I did not succeed to change > this, trying devd and/or devfs, even manually chmod. As a simple test, > I started pulseview as root, still, no success - I can see my devices > listed and selectable for data acquisition, but trying to get data > yields > > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > sr: fx2lafw: resubmit_transfer: LIBUSB_ERROR_NO_DEVICE > Acquisition took 0.07 s > > at best. So, data set is empty, nothing is captured. > > I am out of ideas. Has anybody any experience with this kind of devices? > Any idea how to debug this issue? > > Regards, > Milan > Hi Milan, If you get a no device error on re-submit, the device has been disconnected, but the software side has not yet done the same I believe. Can you check that? --HPS
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