Hi, I recently bought a Velleman DVM4100 DMM (see : http://www.velleman.eu/products/view/?id=385116 <http://www.velleman.eu/products/view/?id=385116>) and I’m struggling to get it working with sigrok.
Some insights: That’s a recent 6000 points DMM that closely looks to the VM40B DMM. One notable exception is how to enable the RS232 output : one has to power the device up with the “REL delta” button pressed instead of “Hz %”' to enable serial output. The IC is unknown : this is a small 64 pin square package with the following annotations : G20B - DTM06602 - R3H3CTD (to be confirmed : the writings are somewhat erased). Pictures link a the end of this message. The PCB shows the following reference on the silkscreen : VA40-20130806 The serial output protocol looks closely to the one used by the fs9721chip : output for DC Auto 0.000V = 1E 2E 3B 4F 5B 6E 7B 8E 9B A0 B0 C0 D2 E0 F1 @2400bps While the fs9721 chip doesn’t support 6000 points, the protocol outputted by this device looks the same. All the 6000 points Fortune ICs supporting 6000 points are using a different protocol. Trying to get sigrok reading it’s input using the VA-VA40B leads to the following : matthieu$ sigrok-cli --driver va-va40b:conn=/dev/tty.usbserial -l 5 -O analog --samples 1000 sr: [00:00.000000] log: libsigrok loglevel set to 5. sr: [00:00.000045] backend: libsigrok 0.4.0-git-0a4549f/2:0:0 (rt: 0.4.0-git-0a4549f/2:0:0). sr: [00:00.000085] backend: Libs: glib 2.46.0 (rt: 2.46.0/4600:0), libzip 1.0.1, libserialport 0.1.1/0:0:0 (rt: 0.1.1/0:0:0), libusb-1.0 1.0.20.11004. sr: [00:00.000094] backend: Host: x86_64-apple-darwin15.0.0, little-endian. sr: [00:00.000100] backend: SCPI backends: TCP, RPC, serial, USBTMC. sr: [00:00.000121] backend: Sanity-checking all drivers. sr: [00:00.000140] backend: Sanity-checking all input modules. sr: [00:00.000146] backend: Sanity-checking all output modules. sr: [00:00.000154] backend: Sanity-checking all transform modules. sr: [00:05.133353] hwdriver: Initializing driver 'va-va40b'. sr: [00:05.134603] hwdriver: sr_config_list(): key 40000 (scan_options) sdi 0x0 cg NULL -> [uint32 20000, 20001] sr: [00:05.135133] serial: Opening serial port '/dev/tty.usbserial' (flags 1). sr: [00:05.202873] serial: Parsing parameters from "2400/8n1". sr: [00:05.206629] serial: Setting serial parameters on port /dev/tty.usbserial. sr: [00:05.212892] serial-dmm: Probing serial port /dev/tty.usbserial. sr: [00:05.212911] serial: Flushing serial port /dev/tty.usbserial. sr: [00:05.212927] serial: Detecting packets on /dev/tty.usbserial (timeout = 3000ms, baudrate = 2400). sr: [00:05.217189] serial: Read 1/1 bytes. sr: [00:05.217214] serial: Read 1/1 bytes. sr: [00:05.217221] serial: Read 1/1 bytes. sr: [00:05.217227] serial: Read 1/1 bytes. sr: [00:05.217233] serial: Read 1/1 bytes. sr: [00:05.217239] serial: Read 1/1 bytes. sr: [00:05.217245] serial: Read 1/1 bytes. sr: [00:05.217251] serial: Read 1/1 bytes. sr: [00:05.217258] serial: Read 1/1 bytes. sr: [00:05.221778] serial: Read 1/1 bytes. sr: [00:05.221832] serial: Read 1/1 bytes. sr: [00:05.221849] serial: Read 1/1 bytes. sr: [00:05.221860] serial: Read 1/1 bytes. sr: [00:05.221871] serial: Read 1/1 bytes. sr: [00:05.221888] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.221897] serial: Got 14 bytes, but not a valid packet. sr: [00:05.221904] serial: Read 1/1 bytes. sr: [00:05.221909] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.221914] serial: Got 14 bytes, but not a valid packet. sr: [00:05.221919] serial: Read 1/1 bytes. sr: [00:05.221924] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.221929] serial: Got 14 bytes, but not a valid packet. sr: [00:05.221935] serial: Read 1/1 bytes. sr: [00:05.221939] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.221944] serial: Got 14 bytes, but not a valid packet. sr: [00:05.221950] serial: Read 1/1 bytes. sr: [00:05.221955] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.221959] serial: Got 14 bytes, but not a valid packet. sr: [00:05.221965] serial: Read 1/1 bytes. sr: [00:05.221970] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.221975] serial: Got 14 bytes, but not a valid packet. sr: [00:05.221981] serial: Read 1/1 bytes. sr: [00:05.221986] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.221992] serial: Got 14 bytes, but not a valid packet. sr: [00:05.221998] serial: Read 1/1 bytes. sr: [00:05.222002] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.222008] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222014] serial: Read 1/1 bytes. sr: [00:05.222018] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.222023] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222029] serial: Read 1/1 bytes. sr: [00:05.222034] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.222038] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222045] serial: Read 1/1 bytes. sr: [00:05.222050] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.222054] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222061] serial: Read 1/1 bytes. sr: [00:05.222066] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.222070] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222076] serial: Read 1/1 bytes. sr: [00:05.222081] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.222086] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222092] serial: Read 1/1 bytes. sr: [00:05.222097] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.222102] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222108] serial: Read 1/1 bytes. sr: [00:05.222113] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.222118] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222123] serial: Read 1/1 bytes. sr: [00:05.222129] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.222133] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222139] serial: Read 1/1 bytes. sr: [00:05.222144] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.222149] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222155] serial: Read 1/1 bytes. sr: [00:05.222160] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.222164] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222170] serial: Read 1/1 bytes. sr: [00:05.222175] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.222180] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222185] serial: Read 1/1 bytes. sr: [00:05.222190] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.222195] serial: Got 14 bytes, but not a valid packet. sr: [00:05.222201] serial: Read 1/1 bytes. sr: [00:05.222205] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.222210] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226791] serial: Read 1/1 bytes. sr: [00:05.226848] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.226865] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226878] serial: Read 1/1 bytes. sr: [00:05.226887] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.226901] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226907] serial: Read 1/1 bytes. sr: [00:05.226912] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.226917] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226923] serial: Read 1/1 bytes. sr: [00:05.226929] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.226933] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226940] serial: Read 1/1 bytes. sr: [00:05.226945] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.226950] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226956] serial: Read 1/1 bytes. sr: [00:05.226961] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.226966] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226972] serial: Read 1/1 bytes. sr: [00:05.226978] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.226982] serial: Got 14 bytes, but not a valid packet. sr: [00:05.226988] serial: Read 1/1 bytes. sr: [00:05.226993] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.226998] serial: Got 14 bytes, but not a valid packet. sr: [00:05.227004] serial: Read 1/1 bytes. sr: [00:05.227009] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.227014] serial: Got 14 bytes, but not a valid packet. sr: [00:05.227020] serial: Read 1/1 bytes. sr: [00:05.227024] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.227029] serial: Got 14 bytes, but not a valid packet. sr: [00:05.227035] serial: Read 1/1 bytes. sr: [00:05.227040] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.227045] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231791] serial: Read 1/1 bytes. sr: [00:05.231850] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.231863] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231876] serial: Read 1/1 bytes. sr: [00:05.231885] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.231893] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231905] serial: Read 1/1 bytes. sr: [00:05.231910] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.231915] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231922] serial: Read 1/1 bytes. sr: [00:05.231927] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.231932] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231938] serial: Read 1/1 bytes. sr: [00:05.231943] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.231948] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231954] serial: Read 1/1 bytes. sr: [00:05.231959] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.231964] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231970] serial: Read 1/1 bytes. sr: [00:05.231976] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.231980] serial: Got 14 bytes, but not a valid packet. sr: [00:05.231987] serial: Read 1/1 bytes. sr: [00:05.231992] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.231997] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232003] serial: Read 1/1 bytes. sr: [00:05.232008] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.232013] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232019] serial: Read 1/1 bytes. sr: [00:05.232024] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.232029] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232035] serial: Read 1/1 bytes. sr: [00:05.232039] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.232044] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232050] serial: Read 1/1 bytes. sr: [00:05.232055] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.232059] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232065] serial: Read 1/1 bytes. sr: [00:05.232070] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.232075] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232081] serial: Read 1/1 bytes. sr: [00:05.232085] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.232090] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232096] serial: Read 1/1 bytes. sr: [00:05.232101] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.232105] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232111] serial: Read 1/1 bytes. sr: [00:05.232116] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.232121] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232127] serial: Read 1/1 bytes. sr: [00:05.232132] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.232137] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232143] serial: Read 1/1 bytes. sr: [00:05.232148] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.232153] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232159] serial: Read 1/1 bytes. sr: [00:05.232164] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.232169] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232175] serial: Read 1/1 bytes. sr: [00:05.232180] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.232185] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232191] serial: Read 1/1 bytes. sr: [00:05.232195] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.232200] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232206] serial: Read 1/1 bytes. sr: [00:05.232211] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.232216] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232221] serial: Read 1/1 bytes. sr: [00:05.232226] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.232231] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232237] serial: Read 1/1 bytes. sr: [00:05.232242] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.232247] serial: Got 14 bytes, but not a valid packet. sr: [00:05.232253] serial: Read 1/1 bytes. sr: [00:05.232258] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.232264] serial: Got 14 bytes, but not a valid packet. sr: [00:05.236859] serial: Read 1/1 bytes. sr: [00:05.236877] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.236886] serial: Got 14 bytes, but not a valid packet. sr: [00:05.236902] serial: Read 1/1 bytes. sr: [00:05.236907] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.236912] serial: Got 14 bytes, but not a valid packet. sr: [00:05.236917] serial: Read 1/1 bytes. sr: [00:05.236922] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.236927] serial: Got 14 bytes, but not a valid packet. sr: [00:05.236933] serial: Read 1/1 bytes. sr: [00:05.236938] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.236942] serial: Got 14 bytes, but not a valid packet. sr: [00:05.236948] serial: Read 1/1 bytes. sr: [00:05.236953] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.236957] serial: Got 14 bytes, but not a valid packet. sr: [00:05.236963] serial: Read 1/1 bytes. sr: [00:05.236968] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.236973] serial: Got 14 bytes, but not a valid packet. sr: [00:05.237036] serial: Read 1/1 bytes. sr: [00:05.237042] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.237046] serial: Got 14 bytes, but not a valid packet. sr: [00:05.237052] serial: Read 1/1 bytes. sr: [00:05.237057] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.237062] serial: Got 14 bytes, but not a valid packet. sr: [00:05.237068] serial: Read 1/1 bytes. sr: [00:05.237073] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.237077] serial: Got 14 bytes, but not a valid packet. sr: [00:05.237083] serial: Read 1/1 bytes. sr: [00:05.237088] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.237092] serial: Got 14 bytes, but not a valid packet. sr: [00:05.237098] serial: Read 1/1 bytes. sr: [00:05.237103] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.237108] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247323] serial: Read 1/1 bytes. sr: [00:05.247356] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.247362] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247368] serial: Read 1/1 bytes. sr: [00:05.247373] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.247378] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247384] serial: Read 1/1 bytes. sr: [00:05.247388] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.247393] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247399] serial: Read 1/1 bytes. sr: [00:05.247404] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.247409] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247414] serial: Read 1/1 bytes. sr: [00:05.247419] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.247424] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247430] serial: Read 1/1 bytes. sr: [00:05.247435] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.247439] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247883] serial: Read 1/1 bytes. sr: [00:05.247889] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.247894] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247900] serial: Read 1/1 bytes. sr: [00:05.247958] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.247964] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247972] serial: Read 1/1 bytes. sr: [00:05.247977] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.247982] serial: Got 14 bytes, but not a valid packet. sr: [00:05.247988] serial: Read 1/1 bytes. sr: [00:05.247994] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.247998] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248004] serial: Read 1/1 bytes. sr: [00:05.248010] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248015] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248021] serial: Read 1/1 bytes. sr: [00:05.248026] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248031] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248037] serial: Read 1/1 bytes. sr: [00:05.248042] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.248046] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248052] serial: Read 1/1 bytes. sr: [00:05.248057] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248061] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248067] serial: Read 1/1 bytes. sr: [00:05.248072] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248077] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248083] serial: Read 1/1 bytes. sr: [00:05.248088] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248092] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248098] serial: Read 1/1 bytes. sr: [00:05.248103] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248108] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248114] serial: Read 1/1 bytes. sr: [00:05.248119] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248124] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248130] serial: Read 1/1 bytes. sr: [00:05.248135] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248141] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248146] serial: Read 1/1 bytes. sr: [00:05.248151] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248157] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248163] serial: Read 1/1 bytes. sr: [00:05.248168] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248173] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248179] serial: Read 1/1 bytes. sr: [00:05.248183] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.248188] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248194] serial: Read 1/1 bytes. sr: [00:05.248199] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248204] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248210] serial: Read 1/1 bytes. sr: [00:05.248215] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248220] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248226] serial: Read 1/1 bytes. sr: [00:05.248231] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248235] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248241] serial: Read 1/1 bytes. sr: [00:05.248246] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248251] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248257] serial: Read 1/1 bytes. sr: [00:05.248262] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248266] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248274] serial: Read 1/1 bytes. sr: [00:05.248279] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248283] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248289] serial: Read 1/1 bytes. sr: [00:05.248295] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248299] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248305] serial: Read 1/1 bytes. sr: [00:05.248310] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248315] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248321] serial: Read 1/1 bytes. sr: [00:05.248326] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248330] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248336] serial: Read 1/1 bytes. sr: [00:05.248341] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248345] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248351] serial: Read 1/1 bytes. sr: [00:05.248356] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248361] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248367] serial: Read 1/1 bytes. sr: [00:05.248371] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248376] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248382] serial: Read 1/1 bytes. sr: [00:05.248387] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248391] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248397] serial: Read 1/1 bytes. sr: [00:05.248402] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248407] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248413] serial: Read 1/1 bytes. sr: [00:05.248418] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248423] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248428] serial: Read 1/1 bytes. sr: [00:05.248433] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248438] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248444] serial: Read 1/1 bytes. sr: [00:05.248449] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248454] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248460] serial: Read 1/1 bytes. sr: [00:05.248465] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248469] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248475] serial: Read 1/1 bytes. sr: [00:05.248480] fs9721: Sync nibble in byte 0 (0xf0) is invalid. sr: [00:05.248485] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248490] serial: Read 1/1 bytes. sr: [00:05.248495] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248500] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248506] serial: Read 1/1 bytes. sr: [00:05.248510] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.248515] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248521] serial: Read 1/1 bytes. sr: [00:05.248526] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248530] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248536] serial: Read 1/1 bytes. sr: [00:05.248541] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248546] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248552] serial: Read 1/1 bytes. sr: [00:05.248557] fs9721: Sync nibble in byte 0 (0x00) is invalid. sr: [00:05.248562] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248568] serial: Read 1/1 bytes. sr: [00:05.248573] fs9721: Sync nibble in byte 0 (0x70) is invalid. sr: [00:05.248577] serial: Got 14 bytes, but not a valid packet. sr: [00:05.248582] serial: Didn't find a valid packet (read 128 bytes). sr: [00:05.248587] serial: Closing serial port /dev/tty.usbserial. sr: [00:05.264153] hwdriver: Scan of 'va-va40b' found 0 devices. No devices found. I tried many other drivers without any success. I’m confused. The RS232 output looks ok using a simple VT100 terminal. Some pictures and close up of the DMM can be found here : https://www.icloud.com/sharedalbum/#B02GdPblXGKAEj3 <https://www.icloud.com/sharedalbum/#B02GdPblXGKAEj3> - Please wait to get a HD picture. Can anybody help ? Thanks Matthieu
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