$ sigrok-cli --loglevel 5 -d sysclk-lwla --samples 4g
sr: [00:00.000000] log: libsigrok loglevel set to 5.
sr: [00:00.000017] backend: libsigrok 0.4.0-git-89c8226/3:0:0 (rt: 0.4.0-git-89c8226/3:0:0).
sr: [00:00.000030] backend: Libs: glib 2.46.2 (rt: 2.46.2/4602:2), libzip 1.0.1, libserialport 0.1.1/1:0:1 (rt: 0.1.1/1:0:1), libusb-1.0 1.0.20.11004, libftdi 1.2.
sr: [00:00.000038] backend: Host: x86_64-unknown-linux-gnu, little-endian.
sr: [00:00.000045] backend: SCPI backends: TCP, RPC, serial, USBTMC.
sr: [00:00.000057] backend: Sanity-checking all drivers.
sr: [00:00.000063] backend: Sanity-checking all input modules.
sr: [00:00.000067] backend: Sanity-checking all output modules.
sr: [00:00.000077] backend: Sanity-checking all transform modules.
srd: libsigrokdecode loglevel set to 5.
sr: [00:00.003832] hwdriver: Initializing driver 'sysclk-lwla'.
sr: [00:00.003870] hwdriver: Scan of 'sysclk-lwla' found 1 devices.
sr: [00:00.003894] usb: Trying to open USB device 3.28.
sr: [00:00.003915] usb: Opened USB device (VID:PID = 2961:6689, bus.address = 3.28).
sr: [00:00.044194] resource: Attempt to open '/home/steven/.local/share/sigrok-firmware/sysclk-lwla1034-int.rbf' failed: No such file or directory
sr: [00:00.044232] resource: Opened '/usr/share/sigrok-firmware/sysclk-lwla1034-int.rbf'.
sr: [00:00.044307] sysclk-lwla: Downloading FPGA bitstream 'sysclk-lwla1034-int.rbf'.
sr: [00:00.938125] sysclk-lwla: FPGA bitstream download of 81464 bytes done.
sr: [00:01.968498] sysclk-lwla: Failed to receive reply: LIBUSB_ERROR_TIMEOUT.
sr: [00:02.968653] sysclk-lwla: Failed to receive reply: LIBUSB_ERROR_TIMEOUT.
sr: [00:02.968693] usb: Closed USB device 3.28.
sr: [00:02.968702] usb: Trying to open USB device 3.28.
sr: [00:02.968739] usb: Opened USB device (VID:PID = 2961:6689, bus.address = 3.28).
sr: [00:03.008995] resource: Attempt to open '/home/steven/.local/share/sigrok-firmware/sysclk-lwla1034-int.rbf' failed: No such file or directory
sr: [00:03.009016] resource: Opened '/usr/share/sigrok-firmware/sysclk-lwla1034-int.rbf'.
sr: [00:03.009057] sysclk-lwla: Downloading FPGA bitstream 'sysclk-lwla1034-int.rbf'.
sr: [00:03.902824] sysclk-lwla: FPGA bitstream download of 81464 bytes done.
sr: [00:03.933648] hwdriver: sr_config_set(): key 50001 (limit_samples) sdi 0x2333dc0 cg NULL -> uint64 4000000000
sr: [00:03.933676] session: Using thread-default main context.
sr: [00:03.933679] session: Starting.
sr: [00:03.933685] sysclk-lwla: Starting acquisition.
sr: [00:03.933708] sysclk-lwla: Acquisition sample count limit 4000000000.
sr: [00:03.933711] sysclk-lwla: Internal clock, samplerate 125000000.
sr: [00:03.934031] std: sysclk-lwla: Starting acquisition.
sr: [00:03.934036] std: sysclk-lwla: Sending SR_DF_HEADER packet.
sr: [00:03.934041] session: Running transform module 'nop'.
sr: [00:03.934049] transform/nop: Received packet of type 10000, passing on unmodified.
sr: [00:03.934055] session: bus: Received SR_DF_HEADER packet.
cli: Received SR_DF_HEADER.
sr: [00:03.934096] hwdriver: sr_config_get(): key 30000 (samplerate) sdi 0x2333dc0 cg NULL -> uint64 125000000
sr: [00:03.934240] sysclk-lwla: Acquisition started.
sr: [00:04.034532] sysclk-lwla: Captured 11 words, 100 ms, status 0x64.
sr: [00:04.034545] sysclk-lwla: Capture triggered.
sr: [00:04.034547] sysclk-lwla: Sampling in progress.
sr: [00:04.134827] sysclk-lwla: Captured 11 words, 200 ms, status 0x64.
sr: [00:04.134840] sysclk-lwla: Sampling in progress.
sr: [00:04.235083] sysclk-lwla: Captured 11 words, 300 ms, status 0x64.
sr: [00:04.235096] sysclk-lwla: Sampling in progress.
sr: [00:04.335358] sysclk-lwla: Captured 11 words, 400 ms, status 0x64.
sr: [00:04.335371] sysclk-lwla: Sampling in progress.
sr: [00:04.435656] sysclk-lwla: Captured 26 words, 500 ms, status 0x64.
sr: [00:04.435670] sysclk-lwla: Sampling in progress.
sr: [00:04.535912] sysclk-lwla: Captured 384 words, 601 ms, status 0x64.
sr: [00:04.535936] sysclk-lwla: Sampling in progress.
sr: [00:04.636253] sysclk-lwla: Captured 384 words, 701 ms, status 0x64.
sr: [00:04.636265] sysclk-lwla: Sampling in progress.
sr: [00:04.736573] sysclk-lwla: Captured 400 words, 801 ms, status 0x64.
sr: [00:04.736586] sysclk-lwla: Sampling in progress.
sr: [00:04.836809] sysclk-lwla: Captured 758 words, 902 ms, status 0x64.
sr: [00:04.836834] sysclk-lwla: Sampling in progress.
sr: [00:04.937052] sysclk-lwla: Captured 758 words, 1002 ms, status 0x64.
sr: [00:04.937068] sysclk-lwla: Sampling in progress.
sr: [00:05.037285] sysclk-lwla: Captured 778 words, 1102 ms, status 0x64.
sr: [00:05.037299] sysclk-lwla: Sampling in progress.
sr: [00:05.137506] sysclk-lwla: Captured 1136 words, 1203 ms, status 0x64.
sr: [00:05.137520] sysclk-lwla: Sampling in progress.
sr: [00:05.237728] sysclk-lwla: Captured 1136 words, 1303 ms, status 0x64.
sr: [00:05.237742] sysclk-lwla: Sampling in progress.
sr: [00:05.337946] sysclk-lwla: Captured 1136 words, 1403 ms, status 0x64.
sr: [00:05.337961] sysclk-lwla: Sampling in progress.
sr: [00:05.438201] sysclk-lwla: Captured 2660 words, 1503 ms, status 0x64.
sr: [00:05.438225] sysclk-lwla: Sampling in progress.
sr: [00:05.538440] sysclk-lwla: Captured 2660 words, 1604 ms, status 0x64.
sr: [00:05.538457] sysclk-lwla: Sampling in progress.
sr: [00:05.638684] sysclk-lwla: Captured 2674 words, 1704 ms, status 0x64.
sr: [00:05.638709] sysclk-lwla: Sampling in progress.
sr: [00:05.738929] sysclk-lwla: Captured 3032 words, 1804 ms, status 0x64.
sr: [00:05.738953] sysclk-lwla: Sampling in progress.
sr: [00:05.839179] sysclk-lwla: Captured 3032 words, 1904 ms, status 0x64.
sr: [00:05.839204] sysclk-lwla: Sampling in progress.
sr: [00:05.939448] sysclk-lwla: Captured 3032 words, 2004 ms, status 0x64.
sr: [00:05.939465] sysclk-lwla: Sampling in progress.
sr: [00:06.039752] sysclk-lwla: Captured 4556 words, 2104 ms, status 0x64.
sr: [00:06.039765] sysclk-lwla: Sampling in progress.
sr: [00:06.140069] sysclk-lwla: Captured 4566 words, 2205 ms, status 0x64.
sr: [00:06.140082] sysclk-lwla: Sampling in progress.
sr: [00:06.240383] sysclk-lwla: Captured 4924 words, 2305 ms, status 0x64.
sr: [00:06.240395] sysclk-lwla: Sampling in progress.
sr: [00:06.340691] sysclk-lwla: Captured 4924 words, 2405 ms, status 0x64.
sr: [00:06.340704] sysclk-lwla: Sampling in progress.
sr: [00:06.440980] sysclk-lwla: Captured 4924 words, 2506 ms, status 0x64.
sr: [00:06.440994] sysclk-lwla: Sampling in progress.
sr: [00:06.541194] sysclk-lwla: Captured 6448 words, 2606 ms, status 0x64.
sr: [00:06.541208] sysclk-lwla: Sampling in progress.
sr: [00:06.641516] sysclk-lwla: Captured 6461 words, 2706 ms, status 0x64.
sr: [00:06.641532] sysclk-lwla: Sampling in progress.
sr: [00:06.741816] sysclk-lwla: Captured 6819 words, 2807 ms, status 0x64.
sr: [00:06.741829] sysclk-lwla: Sampling in progress.
sr: [00:06.842071] sysclk-lwla: Captured 6819 words, 2907 ms, status 0x64.
sr: [00:06.842083] sysclk-lwla: Sampling in progress.
sr: [00:06.942384] sysclk-lwla: Captured 6819 words, 3008 ms, status 0x64.
sr: [00:06.942397] sysclk-lwla: Sampling in progress.
sr: [00:07.042681] sysclk-lwla: Captured 8358 words, 3108 ms, status 0x64.
sr: [00:07.042696] sysclk-lwla: Sampling in progress.
sr: [00:07.142988] sysclk-lwla: Captured 8358 words, 3208 ms, status 0x64.
sr: [00:07.143000] sysclk-lwla: Sampling in progress.
sr: [00:07.243302] sysclk-lwla: Captured 8716 words, 3308 ms, status 0x64.
sr: [00:07.243317] sysclk-lwla: Sampling in progress.
sr: [00:07.343572] sysclk-lwla: Captured 8716 words, 3408 ms, status 0x64.
sr: [00:07.343580] sysclk-lwla: Sampling in progress.
sr: [00:07.443807] sysclk-lwla: Captured 10240 words, 3508 ms, status 0x64.
sr: [00:07.443822] sysclk-lwla: Sampling in progress.
sr: [00:07.544063] sysclk-lwla: Captured 10240 words, 3609 ms, status 0x64.
sr: [00:07.544077] sysclk-lwla: Sampling in progress.
sr: [00:07.644359] sysclk-lwla: Captured 10259 words, 3709 ms, status 0x64.
sr: [00:07.644385] sysclk-lwla: Sampling in progress.
sr: [00:07.744652] sysclk-lwla: Captured 10617 words, 3809 ms, status 0x64.
sr: [00:07.744683] sysclk-lwla: Sampling in progress.
sr: [00:07.844905] sysclk-lwla: Captured 10617 words, 3910 ms, status 0x64.
sr: [00:07.844931] sysclk-lwla: Sampling in progress.
sr: [00:07.945160] sysclk-lwla: Captured 10617 words, 4010 ms, status 0x64.
sr: [00:07.945175] sysclk-lwla: Sampling in progress.
sr: [00:08.045391] sysclk-lwla: Captured 12141 words, 4110 ms, status 0x64.
sr: [00:08.045409] sysclk-lwla: Sampling in progress.
sr: [00:09.145747] sysclk-lwla: Transfer from device failed (state 8): LIBUSB_TRANSFER_TIMED_OUT.
sr: [00:09.145762] sysclk-lwla: Acquisition stopped.
sr: [00:09.145780] session: Running transform module 'nop'.
sr: [00:09.145785] transform/nop: Received packet of type 10001, passing on unmodified.
sr: [00:09.145788] session: bus: Received SR_DF_END packet.
cli: Received SR_DF_END.
sr: [00:09.145808] usb: usb_source_finalize
sr: [00:09.145817] session: Stopped.
sr: [00:09.145857] resource: Attempt to open '/home/steven/.local/share/sigrok-firmware/sysclk-lwla1034-off.rbf' failed: No such file or directory
sr: [00:09.145868] resource: Opened '/usr/share/sigrok-firmware/sysclk-lwla1034-off.rbf'.
sr: [00:09.145908] sysclk-lwla: Downloading FPGA bitstream 'sysclk-lwla1034-off.rbf'.
sr: [00:09.654875] sysclk-lwla: FPGA bitstream download of 48525 bytes done.
sr: [00:09.684987] usb: Closed USB device 3.28.
sr: [00:09.685004] sysclk-lwla: Device context cleared.