./smuview -l 5
sr: [00:00.000001] log: libsigrok loglevel set to 5.
Settings: "/home/peter/.config/sigrok/SmuView.conf" format QSettings::Format(NativeFormat)
sr: [00:00.000231] backend: libsigrok 0.6.0-git-e8111990/4:0:0.
sr: [00:00.000287] backend: Libs: glib 2.56.4 (rt: 2.56.4/5604:4), libzip 1.1.2, libserialport 0.1.1/1:0:1 (rt: 0.1.1/1:0:1), libusb-1.0 1.0.21.11156 API 0x01000105, libftdi 1.2.
sr: [00:00.000307] backend: Host: x86_64-pc-linux-gnu, little-endian.
sr: [00:00.000322] backend: SCPI backends: TCP, RPC, serial, USBTMC.
sr: [00:00.000340] backend: Firmware search paths:
sr: [00:00.000370] backend:  - /home/peter/.local/share/sigrok-firmware
sr: [00:00.000388] backend:  - /usr/local/share/sigrok-firmware
sr: [00:00.000403] backend:  - /usr/share/ubuntu/sigrok-firmware
sr: [00:00.000418] backend:  - /usr/local/share/sigrok-firmware
sr: [00:00.000433] backend:  - /usr/share/sigrok-firmware
sr: [00:00.000447] backend:  - /var/lib/snapd/desktop/sigrok-firmware
sr: [00:00.000485] backend: Sanity-checking all drivers.
sr: [00:00.000512] backend: Sanity-checking all input modules.
sr: [00:00.000531] backend: Sanity-checking all output modules.
sr: [00:00.000556] backend: Sanity-checking all transform modules.
sr: [00:00.039452] hwdriver: Scan found 0 devices (agilent-dmm).
sr: [00:00.039963] hwdriver: Scan found 0 devices (appa-55ii).
sr: [00:00.040217] hwdriver: Scan found 0 devices (arachnid-labs-re-load-pro).
sr: [00:00.063549] hwdriver: Scan found 0 devices (atten-pps3203).
sr: [00:00.065406] hwdriver: Scan found 0 devices (baylibre-acme).
sr: [00:00.065658] hwdriver: Scan found 0 devices (bbcgm-2010).
sr: [00:00.065910] hwdriver: Scan found 0 devices (brymen-bm25x).
sr: [00:00.066114] hwdriver: Scan found 0 devices (brymen-bm857).
sr: [00:00.066426] hwdriver: Scan found 0 devices (brymen-bm86x).
sr: [00:00.066597] hwdriver: Scan found 0 devices (cem-dt-885x).
sr: [00:00.066781] hwdriver: Scan found 0 devices (center-309).
sr: [00:00.066951] hwdriver: Scan found 0 devices (colead-slm).
sr: [00:00.067149] hwdriver: Scan found 0 devices (conrad-digi-35-cpu).
sr: [00:00.067326] demo: Generating square pattern.
sr: [00:00.067374] demo: Generating sine pattern.
sr: [00:00.067528] demo: Generating triangle pattern.
sr: [00:00.067700] demo: Generating sawtooth pattern.
sr: [00:00.067758] hwdriver: Scan found 1 devices (demo).
Configurable::init(): Init  "A0"  - key  "Offset"
Configurable::init(): Init  "A0"  - key  "Measured Quantity"
Configurable::init(): Init  "A0"  - key  "Amplitude"
Configurable::init(): Init  "A0"  - key  "Pattern Mode"
sr: [00:00.068028] hwdriver: sr_config_list(): key 30002 (pattern) sdi 0x564a7b64e880 cg A0 -> ['square', 'sine', 'triangle', 'sawtooth']
Configurable::init(): Init  "A1"  - key  "Offset"
Configurable::init(): Init  "A1"  - key  "Measured Quantity"
Configurable::init(): Init  "A1"  - key  "Amplitude"
Configurable::init(): Init  "A1"  - key  "Pattern Mode"
sr: [00:00.068179] hwdriver: sr_config_list(): key 30002 (pattern) sdi 0x564a7b64e880 cg A1 -> ['square', 'sine', 'triangle', 'sawtooth']
Configurable::init(): Init  "A2"  - key  "Offset"
Configurable::init(): Init  "A2"  - key  "Measured Quantity"
Configurable::init(): Init  "A2"  - key  "Amplitude"
Configurable::init(): Init  "A2"  - key  "Pattern Mode"
sr: [00:00.068322] hwdriver: sr_config_list(): key 30002 (pattern) sdi 0x564a7b64e880 cg A2 -> ['square', 'sine', 'triangle', 'sawtooth']
Configurable::init(): Init  "A3"  - key  "Offset"
Configurable::init(): Init  "A3"  - key  "Measured Quantity"
Configurable::init(): Init  "A3"  - key  "Amplitude"
Configurable::init(): Init  "A3"  - key  "Pattern Mode"
sr: [00:00.068466] hwdriver: sr_config_list(): key 30002 (pattern) sdi 0x564a7b64e880 cg A3 -> ['square', 'sine', 'triangle', 'sawtooth']
Configurable::init(): Init  "Analog"  - key  "Offset"
Configurable::init(): Init  "Analog"  - key  "Amplitude"
Configurable::init(): Init  "Logic"  - key  "Pattern Mode"
sr: [00:00.068598] hwdriver: sr_config_list(): key 30002 (pattern) sdi 0x564a7b64e880 cg Logic -> ['sigrok', 'random', 'incremental', 'walking-one', 'walking-zero', 'all-low', 'all-high', 'squid', 'graycode']
Configurable::init(): Init  "Demo device"  - key  "Trigger Match"
sr: [00:00.068683] hwdriver: sr_config_list(): key 30014 (triggermatch) sdi 0x564a7b64e880 cg NULL -> [1, 2, 3, 4, 5]
Configurable::init(): Init  "Demo device"  - key  "Averaging Samples"
Configurable::init(): Init  "Demo device"  - key  "Averaging"
Configurable::init(): Init  "Demo device"  - key  "Capture Ratio"
Configurable::init(): Init  "Demo device"  - key  "Samplerate"
sr: [00:00.068831] hwdriver: sr_config_list(): key 30000 (samplerate) sdi 0x564a7b64e880 cg NULL -> {'samplerate-steps': <[uint64 1, 1000000000, 1]>}
sr: [00:00.069022] hwdriver: Scan found 0 devices (deree-de5000).
sr: [00:00.069243] hwdriver: Scan found 0 devices (digitek-dt4000zc).
sr: [00:00.069465] hwdriver: Scan found 0 devices (eevblog-121gw).
sr: [00:00.077394] hwdriver: Scan found 0 devices (fluke-45).
sr: [00:00.078240] hwdriver: Scan found 0 devices (fluke-dmm).
sr: [00:00.078468] hwdriver: Scan found 0 devices (gmc-mh-1x-2x-rs232).
sr: [00:00.078668] hwdriver: Scan found 0 devices (gmc-mh-2x-bd232).
sr: [00:00.078859] hwdriver: Scan found 0 devices (gwinstek-gpd).
sr: [00:00.086410] hwdriver: Scan found 0 devices (hp-3457a).
sr: [00:00.093835] hwdriver: Scan found 0 devices (hpib-pps).
sr: [00:00.097684] hwdriver: Scan found 0 devices (iso-tech-idm103n).
sr: [00:00.100295] hwdriver: Scan found 0 devices (kecheng-kc-330b).
sr: [00:00.101648] hwdriver: Scan found 0 devices (kern-ew-6200-2nm).
sr: [00:00.102926] hwdriver: Scan found 0 devices (korad-kaxxxxp).
sr: [00:00.103921] hwdriver: Scan found 0 devices (lascar-el-usb).
sr: [00:00.105000] hwdriver: Scan found 0 devices (manson-hcs-3xxx).
sr: [00:00.105994] hwdriver: Scan found 0 devices (mastech-mas345).
sr: [00:00.106981] hwdriver: Scan found 0 devices (mastech-ms2115b).
sr: [00:00.107969] hwdriver: Scan found 0 devices (mastech-ms5308).
sr: [00:00.108975] hwdriver: Scan found 0 devices (mastech-ms8250b).
sr: [00:00.109867] hwdriver: Scan found 0 devices (mastech-ms8250d).
sr: [00:00.110774] hwdriver: Scan found 0 devices (maynuo-m97).
sr: [00:00.111654] hwdriver: Scan found 0 devices (metex-m3640d).
sr: [00:00.112551] hwdriver: Scan found 0 devices (metex-m3860m).
sr: [00:00.113434] hwdriver: Scan found 0 devices (metex-m4650cr).
sr: [00:00.114227] hwdriver: Scan found 0 devices (metex-me31).
sr: [00:00.114961] hwdriver: Scan found 0 devices (metrix-mx56c).
sr: [00:00.115817] hwdriver: Scan found 0 devices (mic-98581).
sr: [00:00.116658] hwdriver: Scan found 0 devices (mic-98583).
sr: [00:00.117432] serial: No serial device specified.
sr: [00:00.117459] hwdriver: Scan found 0 devices (motech-lps-301).
sr: [00:00.118253] hwdriver: Scan found 0 devices (norma-dmm).
sr: [00:00.122633] hwdriver: Scan found 0 devices (pce-322a).
sr: [00:00.123463] hwdriver: Scan found 0 devices (pce-pce-dm32).
sr: [00:00.124284] hwdriver: Scan found 0 devices (peaktech-2170).
sr: [00:00.125239] hwdriver: Scan found 0 devices (peaktech-3330).
sr: [00:00.126092] hwdriver: Scan found 0 devices (peaktech-3410).
sr: [00:00.126954] hwdriver: Scan found 0 devices (peaktech-3415).
sr: [00:00.127849] hwdriver: Scan found 0 devices (peaktech-4370).
sr: [00:00.128709] hwdriver: Scan found 0 devices (peaktech-4390a).
sr: [00:00.129528] hwdriver: Scan found 0 devices (radioshack-22-168).
sr: [00:00.130355] hwdriver: Scan found 0 devices (radioshack-22-805).
sr: [00:00.131157] hwdriver: Scan found 0 devices (radioshack-22-812).
sr: [00:00.131940] hwdriver: Scan found 0 devices (rdtech-dps).
sr: [00:00.139900] hwdriver: Scan found 0 devices (scpi-dmm).
sr: [00:00.147778] hwdriver: Scan found 0 devices (scpi-pps).
sr: [00:00.148771] hwdriver: Scan found 0 devices (siemens-b102x).
sr: [00:00.149595] hwdriver: Scan found 0 devices (sparkfun-70c).
sr: [00:00.150427] hwdriver: Scan found 0 devices (tecpel-dmm-8061).
sr: [00:00.151307] hwdriver: Scan found 0 devices (tecpel-dmm-8061-ser).
sr: [00:00.152140] hwdriver: Scan found 0 devices (tekpower-tp4000ZC).
sr: [00:00.152911] hwdriver: Scan found 0 devices (teleinfo).
sr: [00:00.153576] hwdriver: Scan found 0 devices (tenma-72-7730).
sr: [00:00.154386] hwdriver: Scan found 0 devices (tenma-72-7730-ser).
sr: [00:00.155146] hwdriver: Scan found 0 devices (tenma-72-7732).
sr: [00:00.155853] hwdriver: Scan found 0 devices (tenma-72-7732-ser).
sr: [00:00.156523] hwdriver: Scan found 0 devices (tenma-72-7745).
sr: [00:00.157225] hwdriver: Scan found 0 devices (tenma-72-7745-ser).
sr: [00:00.158052] hwdriver: Scan found 0 devices (tenma-72-7750).
sr: [00:00.158844] hwdriver: Scan found 0 devices (tenma-72-7750-ser).
sr: [00:00.159629] hwdriver: Scan found 0 devices (tenma-72-9380a).
sr: [00:00.160482] hwdriver: Scan found 0 devices (tenma-72-9380a-ser).
sr: [00:00.161327] hwdriver: Scan found 0 devices (testo).
sr: [00:00.162161] hwdriver: Scan found 0 devices (tondaj-sl-814).
sr: [00:00.163046] hwdriver: Scan found 0 devices (uni-t-ut32x).
sr: [00:00.164045] hwdriver: Scan found 0 devices (uni-t-ut372).
sr: [00:00.165134] hwdriver: Scan found 0 devices (uni-t-ut60a).
sr: [00:00.166127] hwdriver: Scan found 0 devices (uni-t-ut60a-ser).
sr: [00:00.167078] hwdriver: Scan found 0 devices (uni-t-ut60e).
sr: [00:00.169175] hwdriver: Scan found 0 devices (uni-t-ut60e-ser).
sr: [00:00.169976] hwdriver: Scan found 0 devices (uni-t-ut60g).
sr: [00:00.170747] hwdriver: Scan found 0 devices (uni-t-ut60g-ser).
sr: [00:00.171592] hwdriver: Scan found 0 devices (uni-t-ut61b).
sr: [00:00.172362] hwdriver: Scan found 0 devices (uni-t-ut61b-ser).
sr: [00:00.174459] hwdriver: Scan found 0 devices (uni-t-ut61c).
sr: [00:00.175229] hwdriver: Scan found 0 devices (uni-t-ut61c-ser).
sr: [00:00.175949] hwdriver: Scan found 0 devices (uni-t-ut61d).
sr: [00:00.176624] hwdriver: Scan found 0 devices (uni-t-ut61d-ser).
sr: [00:00.177305] hwdriver: Scan found 0 devices (uni-t-ut61e).
sr: [00:00.181279] hwdriver: Scan found 0 devices (uni-t-ut61e-ser).
sr: [00:00.182057] hwdriver: Scan found 0 devices (uni-t-ut71a).
sr: [00:00.182949] hwdriver: Scan found 0 devices (uni-t-ut71a-ser).
sr: [00:00.184244] hwdriver: Scan found 0 devices (uni-t-ut71b).
sr: [00:00.184980] hwdriver: Scan found 0 devices (uni-t-ut71b-ser).
sr: [00:00.185751] hwdriver: Scan found 0 devices (uni-t-ut71c).
sr: [00:00.186513] hwdriver: Scan found 0 devices (uni-t-ut71c-ser).
sr: [00:00.187365] hwdriver: Scan found 0 devices (uni-t-ut71d).
sr: [00:00.188196] hwdriver: Scan found 0 devices (uni-t-ut71d-ser).
sr: [00:00.189033] hwdriver: Scan found 0 devices (uni-t-ut71e).
sr: [00:00.189858] hwdriver: Scan found 0 devices (uni-t-ut71e-ser).
sr: [00:00.190687] hwdriver: Scan found 0 devices (va-va18b).
sr: [00:00.191524] hwdriver: Scan found 0 devices (va-va40b).
sr: [00:00.192360] hwdriver: Scan found 0 devices (velleman-dvm4100).
sr: [00:00.193231] hwdriver: Scan found 0 devices (victor-dmm).
sr: [00:00.193993] hwdriver: Scan found 0 devices (victor-dmm-ser).
sr: [00:00.194810] hwdriver: Scan found 0 devices (voltcraft-k204).
sr: [00:00.195637] hwdriver: Scan found 0 devices (voltcraft-m3650cr).
sr: [00:00.196555] hwdriver: Scan found 0 devices (voltcraft-m3650d).
sr: [00:00.197357] hwdriver: Scan found 0 devices (voltcraft-m4650cr).
sr: [00:00.198177] hwdriver: Scan found 0 devices (voltcraft-me42).
sr: [00:00.199002] hwdriver: Scan found 0 devices (voltcraft-vc820).
sr: [00:00.199816] hwdriver: Scan found 0 devices (voltcraft-vc820-ser).
sr: [00:00.200565] hwdriver: Scan found 0 devices (voltcraft-vc830).
sr: [00:00.201332] hwdriver: Scan found 0 devices (voltcraft-vc830-ser).
sr: [00:00.202117] hwdriver: Scan found 0 devices (voltcraft-vc840).
sr: [00:00.202917] hwdriver: Scan found 0 devices (voltcraft-vc840-ser).
sr: [00:00.203693] hwdriver: Scan found 0 devices (voltcraft-vc870).
sr: [00:00.204417] hwdriver: Scan found 0 devices (voltcraft-vc870-ser).
sr: [00:00.205128] hwdriver: Scan found 0 devices (voltcraft-vc920).
sr: [00:00.205873] hwdriver: Scan found 0 devices (voltcraft-vc920-ser).
sr: [00:00.206672] hwdriver: Scan found 0 devices (voltcraft-vc940).
sr: [00:00.207370] hwdriver: Scan found 0 devices (voltcraft-vc940-ser).
sr: [00:00.208069] hwdriver: Scan found 0 devices (voltcraft-vc96).
sr: [00:00.208765] hwdriver: Scan found 0 devices (voltcraft-vc960).
sr: [00:00.209466] hwdriver: Scan found 0 devices (voltcraft-vc960-ser).
sr: [00:00.210212] hwdriver: Scan found 0 devices (zketech-ebd-usb).
sr: [00:29.682282] hwdriver: sr_config_list(): key 2147418112 (NULL) sdi (nil) cg NULL -> [uint32 20000, 20001, 20002]
sr: [00:29.682374] modbus: Opening serial_rtu device /dev/ttyUSB0.
sr: [00:29.682422] serial: Opening serial port '/dev/ttyUSB0' (flags 1).
sr: [00:29.683948] serial: Parsing parameters from "9600/8n1".
sr: [00:29.684058] serial: Setting serial parameters on port /dev/ttyUSB0.
sr: [00:29.684180] serial: Flushing serial port /dev/ttyUSB0.
sr: [00:29.684227] rdtech-dps: rdtech_dps_read_holding_registers(): -1-, i = 0
sr: [00:29.684301] serial: Wrote 1/1 bytes.
sr: [00:29.684356] serial: Wrote 5/5 bytes.
sr: [00:29.684415] serial: Wrote 2/2 bytes.
sr: [00:29.986341] serial: Read 1/1 bytes.
sr: [00:29.986399] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 301951
sr: [00:29.986476] serial: Read 1/1 bytes.
sr: [00:29.986553] serial: Read 5/5 bytes.
sr: [00:29.986615] serial: Read 2/2 bytes.
sr: [00:29.986664] rdtech-dps: rdtech_dps_read_holding_registers(): -2- ret = 0
sr: [00:29.986711] rdtech-dps: RDTech PSU model: 3005 version: 14
sr: [00:29.986793] hwdriver: Scan found 1 devices (rdtech-dps).
Configurable::init(): Init  "RDTech DPS3005"  - key  "Regulation"
Configurable::init(): Init  "RDTech DPS3005"  - key  "Over Current Protection Threshold"
Configurable::init(): Init  "RDTech DPS3005"  - key  "Over Current Protection Active"
Configurable::init(): Init  "RDTech DPS3005"  - key  "Over Voltage Protection Threshold"
Configurable::init(): Init  "RDTech DPS3005"  - key  "Over Voltage Protection Active"
Configurable::init(): Init  "RDTech DPS3005"  - key  "Enabled"
Configurable::init(): Init  "RDTech DPS3005"  - key  "Current Limit"
sr: [00:29.987537] hwdriver: sr_config_list(): key 30032 (current_limit) sdi 0x564a7bc0f850 cg NULL -> [0.0, 5.0, 0.001]
Configurable::init(): Init  "RDTech DPS3005"  - key  "Current"
Configurable::init(): Init  "RDTech DPS3005"  - key  "Voltage Target"
sr: [00:29.987795] hwdriver: sr_config_list(): key 30030 (voltage_target) sdi 0x564a7bc0f850 cg NULL -> [0.0, 30.0, 0.01]
Configurable::init(): Init  "RDTech DPS3005"  - key  "Voltage"
sr: [00:32.490576] device: rdtech-dps: Opening device instance.
sr: [00:32.490642] serial: Opening serial port '/dev/ttyUSB0' (flags 1).
sr: [00:32.491749] serial: Parsing parameters from "9600/8n1".
sr: [00:32.491856] serial: Setting serial parameters on port /dev/ttyUSB0.
sr: [00:32.491959] serial: Flushing serial port /dev/ttyUSB0.
sr: [00:32.492051] serial: Wrote 1/1 bytes.
sr: [00:32.492119] serial: Wrote 8/8 bytes.
sr: [00:32.492194] serial: Wrote 2/2 bytes.
sr: [00:32.712672] serial: Read 1/1 bytes.
sr: [00:32.712726] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 220491
sr: [00:32.712787] serial: Read 1/1 bytes.
sr: [00:32.712834] serial: Read 4/4 bytes.
sr: [00:32.712890] serial: Read 2/2 bytes.
Init channel  "V" , channel_start_timestamp =  "2019.05.29 22:19:01.320"
Init channel  "I" , channel_start_timestamp =  "2019.05.29 22:19:01.320"
Init channel  "P" , channel_start_timestamp =  "2019.05.29 22:19:01.320"
Init analog base signal  "V [V DC]"
Init analog time signal  "V [V DC]" , signal_start_timestamp_ =  "2019.05.29 22:19:01.320"
Init analog base signal  "I [A DC]"
Init analog time signal  "I [A DC]" , signal_start_timestamp_ =  "2019.05.29 22:19:01.320"
Init analog base signal  "P [W]"
Init analog time signal  "P [W]" , signal_start_timestamp_ =  "2019.05.29 22:19:01.320"
Init channel  "" , channel_start_timestamp =  "2019.05.29 22:19:01.320"
Init analog base signal  "R [Ω]"
Init analog time signal  "R [Ω]" , signal_start_timestamp_ =  "2019.05.29 22:19:01.320"
Init channel  "" , channel_start_timestamp =  "2019.05.29 22:19:01.320"
Init analog base signal  "Wh [Wh]"
Init analog time signal  "Wh [Wh]" , signal_start_timestamp_ =  "2019.05.29 22:19:01.320"
Init channel  "" , channel_start_timestamp =  "2019.05.29 22:19:01.320"
Init analog base signal  "Ah [Ah]"
Init analog time signal  "Ah [Ah]" , signal_start_timestamp_ =  "2019.05.29 22:19:01.320"
sr: [00:32.714832] session: Creating our own main context.
sr: [00:32.714920] session: Starting.
sr: [00:32.714951] hwdriver: rdtech-dps: Starting acquisition.
sr: [00:32.714986] rdtech-dps: rdtech_dps_read_holding_registers(): -1-, i = 0
sr: [00:32.715057] serial: Wrote 1/1 bytes.
sr: [00:32.715124] serial: Wrote 5/5 bytes.
sr: [00:32.715187] serial: Wrote 2/2 bytes.
sr: [00:32.844757] rdtech-dps: rdtech_dps_read_holding_registers(): -1-, i = 0
sr: [00:32.844840] serial: Wrote 1/1 bytes.
sr: [00:32.844866] serial: Wrote 5/5 bytes.
sr: [00:32.844888] serial: Wrote 2/2 bytes.
sr: [00:33.085719] serial: Read 1/1 bytes.
sr: [00:33.085792] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 240886
sr: [00:33.085723] sr: [00:33.085873] serial: Read 1/1 bytes.
sr: [00:33.085979] serial: Read 1/1 bytes.
sr: [00:33.086040] serial: Read 3/3 bytes.
modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 370813
sr: [00:33.086162] rdtech-dps: rdtech_dps_read_holding_registers(): -2- ret = -1
sr: [00:33.086211] rdtech-dps: rdtech_dps_read_holding_registers(): -1-, i = 1
sr: [00:33.086290] serial: Wrote 1/1 bytes.
sr: [00:33.086360] serial: Wrote 5/5 bytes.
sr: [00:33.086435] serial: Wrote 2/2 bytes.
sr: [00:33.186314] serial: Read 1/2 bytes.
sr: [00:33.186378] rdtech-dps: rdtech_dps_read_holding_registers(): -2- ret = -1
sr: [00:33.186437] rdtech-dps: rdtech_dps_read_holding_registers(): -1-, i = 1
sr: [00:33.186533] serial: Wrote 1/1 bytes.
sr: [00:33.186603] serial: Wrote 5/5 bytes.
sr: [00:33.186687] serial: Wrote 2/2 bytes.
sr: [00:33.458984] serial: Read 1/1 bytes.
sr: [00:33.459057] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 272331
sr: [00:33.458984] sr: [00:33.459150] serial: Read 1/1 bytes.
sr: [00:33.459210] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 372728
sr: [00:33.459279] rdtech-dps: rdtech_dps_read_holding_registers(): -2- ret = -1
sr: [00:33.459348] rdtech-dps: rdtech_dps_read_holding_registers(): -1-, i = 2
serial: Read 1/1 bytes.
sr: [00:33.459449] sr: [00:33.459460] serial: Read 3/3 bytes.
serial: Wrote 1/1 bytes.
sr: [00:33.459601] serial: Wrote 5/5 bytes.
sr: [00:33.459677] serial: Wrote 2/2 bytes.
sr: [00:33.559796] serial: Read 1/2 bytes.
sr: [00:33.559862] rdtech-dps: rdtech_dps_read_holding_registers(): -2- ret = -1
sr: [00:33.559913] rdtech-dps: rdtech_dps_read_holding_registers(): -1-, i = 2
sr: [00:33.560001] serial: Wrote 1/1 bytes.
sr: [00:33.560071] serial: Wrote 5/5 bytes.
sr: [00:33.560145] serial: Wrote 2/2 bytes.
sr: [00:33.832178] serial: Read 1/1 bytes.
sr: [00:33.832248] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 272064
sr: [00:33.832182] sr: [00:33.832331] serial: Read 1/1 bytes.
sr: [00:33.832404] serial: Read 3/3 bytes.
serial: Read 1/1 bytes.
sr: [00:33.832473] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 372751
sr: [00:33.832525] rdtech-dps: rdtech_dps_read_holding_registers(): -2- ret = -1
sr: [00:33.832562] session: Could not start rdtech-dps device (null) acquisition.
sr: [00:33.832603] hwdriver: rdtech-dps: Stopping acquisition.
sr: [00:33.832656] session: bus: Received SR_DF_END packet.
sr: [00:33.832742] session: Cannot remove non-existing event source 0x7fcf4c00b300.
sr: [00:33.932655] serial: Read 1/2 bytes.
sr: [00:33.932719] rdtech-dps: rdtech_dps_read_holding_registers(): -2- ret = -1
Caught exception: generic/unspecified error
BaseDevice::close(): Trying to close device  "RDTech DPS3005 v14"
sr: [00:33.941837] session: No main context set; already stopped?
sr: [00:33.941903] device: rdtech-dps: Closing device instance.
sr: [00:33.942000] serial: Wrote 1/1 bytes.
sr: [00:33.942071] serial: Wrote 8/8 bytes.
sr: [00:33.942174] serial: Wrote 2/2 bytes.
sr: [00:34.206419] serial: Read 1/1 bytes.
sr: [00:34.206478] modbus_serial: modbus_serial_rtu_read_begin(): 1st serial_read_blocking() time = 264253
sr: [00:34.206549] serial: Read 1/1 bytes.
sr: [00:34.206597] serial: Read 4/4 bytes.
sr: [00:34.206658] serial: Read 2/2 bytes.
sr: [00:34.206699] serial: Closing serial port /dev/ttyUSB0.
BaseDevice::close(): Device closed  "RDTech DPS3005 v14"
BaseDevice::~BaseDevice():  "Demo device"
BaseDevice::close(): Trying to close device  "Demo device"