Hi Michael, first of all, cool use case! Unfortunately, I don't have a HID meter to test with. However, I have two ideas (that might be totally wrong):
1. Check if you have installed the udev rules. By default, sigrok installs udev rules to mark all known vids/pids with ID_SIGROK=1 and only auto scans those. UT612 is expected under 10c4:ea80. 2. Check if you have permissions to open the device. The default sigrok udev rules grant permissions to users in the "plugdev" group. ... I suggest you also run `lsusb` to check what vid/pid we're dealing with (ideally before and after you've connected to usb). Since the chip is HID, it will not show up as /dev/tty*, but it still needs permissions. Additionally, the libserialport-dev is likely not needed (I'm not sure and don't want to spend time to search for it. It's safer to have it), since it will be handled by serial_hid_cp2110.c driver. This depends on: #ifdef HAVE_SERIAL_COMM #ifdef HAVE_LIBHIDAPI It will require libhidapi-dev. Is this installed and compiled with? Best regards, Ladislav On Tue, Nov 25, 2025 at 12:04:39PM +0000, Michael A Ray via sigrok-devel wrote: > > > Dan, > > Thanks. I saw that in the log. Mathias' note about libserialport-dev lead me > to install that, and rebuild libsigrok, but still nothing. However I have > used other UniT kit, like the UT60A dmm with both RS232 and USB adapters > even before installing libserialport-dev. > > I'm now not confident that I have the right button presses to enable USB. > > AI is never going to take over the world if it can't help me enable USB on > the UT612 :-) > > Mike > > > On 25/11/2025 11:33, Dan Horák wrote: > > On Tue, 25 Nov 2025 11:07:04 +0000 > > Michael A Ray <[email protected]> wrote: > > > > > > > > > > > Dan, > > > > > > Here below is the text of the log created. > > > > > > This might sound like a really stupid question, but I have no sighted > > > assistance here. Copilot AI is telling me the right way to enable the > > > meter for USB connectivity is to turn it on, then press the right-most > > > soft button on the row of four buttons under the display. Is that right? > > > Copilot has been known to tell me nonsense before now. > > > > the wiki page (https://sigrok.org/wiki/UNI-T_UT612) talks about only > > TX connected, perhaps there is some oddity how it communicates with > > tools like sigrok-cli > > > > > Log: > > > > > > sr: [00:00.000032] log: libsigrok loglevel set to 5. > > > sr: [00:00.000050] backend: libsigrok 0.6.0-git-0bc24877/4:0:0. > > > sr: [00:00.000095] backend: Libs: glib 2.64.6 (rt: 2.64.6/6406:6), zlib > > > 1.2.11, libzip 1.5.1, minilzo 2.10, libserialport 0.1.1/1:0:1 (rt: > > > 0.1.1/1:0:1), libusb-1.0 1.0.23.11397 API 0x01000107, hidapi 0.9.0, > > > libftdi 1.4, librevisa 0.0.20130812. > > > sr: [00:00.000108] backend: Host: x86_64-pc-linux-gnu, little-endian. > > > sr: [00:00.000119] backend: SCPI backends: TCP, RPC, serial, VISA, USBTMC. > > > sr: [00:00.000127] backend: Firmware search paths: > > > sr: [00:00.000147] backend: - /home/mike/.local/share/sigrok-firmware > > > sr: [00:00.000156] backend: - /usr/local/share/sigrok-firmware > > > sr: [00:00.000165] backend: - /usr/local/share/sigrok-firmware > > > sr: [00:00.000173] backend: - /usr/share/sigrok-firmware > > > sr: [00:00.000181] backend: - /var/lib/snapd/desktop/sigrok-firmware > > > sr: [00:00.000210] backend: Sanity-checking all drivers. > > > sr: [00:00.000224] backend: Sanity-checking all input modules. > > > sr: [00:00.000233] backend: Sanity-checking all output modules. > > > sr: [00:00.000247] backend: Sanity-checking all transform modules. > > > srd: libsigrokdecode loglevel set to 5. > > > sr: [00:00.003443] hwdriver: Scan found 0 devices (agilent-dmm). > > > sr: [00:00.003455] hwdriver: Scan found 0 devices (appa-55ii). > > > sr: [00:00.003464] hwdriver: Scan found 0 devices > > > (arachnid-labs-re-load-pro). > > > sr: [00:00.003474] serial: No serial device specified. > > > sr: [00:00.003484] asix-omega-rtm-cli: Vendor application executable: > > > omegartmcli > > > posix_spawn avoided (fd close requested) > > > sr: [00:00.004331] asix-omega-rtm-cli: External RTM CLI execution failed. > > > sr: [00:00.004347] hwdriver: Scan found 0 devices (asix-omega-rtm-cli). > > > sr: [00:00.004380] hwdriver: Scan found 0 devices (asix-sigma). > > > sr: [00:00.004390] serial: No serial device specified. > > > sr: [00:00.004399] hwdriver: Scan found 0 devices (atorch). > > > sr: [00:00.004408] hwdriver: Scan found 0 devices (atten-pps3203). > > > sr: [00:00.004540] hwdriver: Scan found 0 devices (baylibre-acme). > > > sr: [00:00.004557] hwdriver: Scan found 0 devices (beaglelogic). > > > sr: [00:00.004567] hwdriver: Scan found 0 devices (bkprecision-1856d). > > > sr: [00:00.004576] hwdriver: Scan found 0 devices (cem-dt-885x). > > > sr: [00:00.004585] hwdriver: Scan found 0 devices (center-309). > > > sr: [00:00.004594] hwdriver: Scan found 0 devices (voltcraft-k204). > > > sr: [00:00.004603] serial: No serial device specified. > > > sr: [00:00.004616] hwdriver: Scan found 0 devices (chronovu-la). > > ... > > > sr: [00:00.100744] hwdriver: Scan found 0 devices (voltcraft-vc960-ser). > > > sr: [00:00.100751] hwdriver: Scan found 0 devices (voltcraft-vc870-ser). > > > sr: [00:00.100758] hwdriver: Scan found 0 devices (voltcraft-vc96). > > > sr: [00:00.100772] hwdriver: Scan found 0 devices (deree-de5000). > > > sr: [00:00.100778] hwdriver: Scan found 0 devices (mastech-ms5308). > > > sr: [00:00.100784] hwdriver: Scan found 0 devices (peaktech-2170). > > > sr: [00:00.100790] hwdriver: Scan found 0 devices (uni-t-ut612). > > > > ^^^ it is trying ... > > > > > sr: [00:00.100796] hwdriver: Scan found 0 devices (peaktech-2165). > > > sr: [00:00.100802] hwdriver: Scan found 0 devices (voltcraft-4080). > > > sr: [00:00.100808] serial: No serial device specified. > > ... > > > sr: [00:00.131195] hwdriver: Scan found 0 devices (zketech-ebd-usb). > > > sr: [00:00.131222] hwdriver: Cleaning up all drivers. > > > The following devices were found: > > > demo - Demo device with 13 channels: D0 D1 D2 D3 D4 D5 D6 D7 A0 A1 A2 A3 > > > A4 > > > > > > Dan > > > > > > > > > > On 25/11/2025 10:43, Dan Horák wrote: > > > > On Tue, 25 Nov 2025 10:28:40 +0000 > > > > Michael A Ray via sigrok-devel <[email protected]> > > > > wrote: > > > > > > > > > > > > > > Hello all, > > > > > > > > > > I’ve been experimenting with a UNI-T UT612 LCR meter that uses the > > > > > CP2110 HID-UART bridge (USB VID:PID 10c4:ea80). I’ve built libsigrok > > > > > and > > > > > sigrok-cli from current master, with HIDAPI detected at configure > > > > > time. > > > > > However, sigrok-cli --scan only shows the demo device, and the > > > > > uni-t-ut612 driver appears to expect a serial port (/dev/ttyUSB*). > > > > > > > > please post the output of "sigrok-cli -l 5 --scan", so we get the > > > > verbose logs > > > > > > > > > > > > Dan > > > > > Could someone clarify the current status of HID support for the UT612? > > > > > > > > > > • Has HID binding for the UT612 driver been merged, or is it still > > > > > pending? > > > > > • Is there a development branch or patchset I should test? > > > > > • Any guidance on decoding the HID frames directly would also be > > > > > appreciated. > > > > > > > > > > I’d be happy to test experimental code or contribute logs from my > > > > > device > > > > > if that helps move HID support forward. > > > > > > > > > > Thanks for your time and for all the work on sigrok. > > > > > > > > > > sigrok-cli is an absolute Godsend to me as a totally blind hacker. > > > > > > > > > > Mike > > > > > > > > > > > > > > > -- > > > > > Michael A. Ray > > > > > Software engineer > > > > > Witley, Surrey, South-east UK > > > > > > > > > > He/him > > > > > > > > > > "Perfection is achieved, not when there is nothing more to add, but > > > > > when > > > > > there is nothing left to take away." -- A. de Saint-Exupery > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > sigrok-devel mailing list > > > > > [email protected] > > > > > https://lists.sourceforge.net/lists/listinfo/sigrok-devel > > > > > > > > > -- > > > Michael A. Ray > > > Software engineer > > > Witley, Surrey, South-east UK > > > > > > He/him > > > > > > "Perfection is achieved, not when there is nothing more to add, but when > > > there is nothing left to take away." -- A. de Saint-Exupery > > > > > > > > > > > > _______________________________________________ > > sigrok-devel mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/sigrok-devel > > > -- > Michael A. Ray > Software engineer > Witley, Surrey, South-east UK > > He/him > > "Perfection is achieved, not when there is nothing more to add, but when > there is nothing left to take away." -- A. de Saint-Exupery > > > > > _______________________________________________ > sigrok-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sigrok-devel -- S pozdravem Ladislav "Krakonoš" Láska http://www.krakonos.org/ _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
