Basic question about logging

[G8GYW]

Hi everyone

ebusd novice here so please be nice (c:

I am building an ebuzzz USB adapter to connect my Vaillant ecotec boiler to a Raspberry Pi running ebusd. I don't want to control the boiler, just log data such as flow and return temperatures over a period of time. Is this easy to do for a novice like me? Any pointers on how to get it running?

Thanks!

Mike

[G8GYW]

I've made some progress with this. I have a working adapter connected to my boiler and ebusd is running on the RPi.

I've done my best to understand the wiki (not easy for a novice but I appreciate the effort that went in to creating it!) and managed to produce this output:

`ebus@boiler:~ $ ebusctl find
bai AccessoriesOne = no data stored
bai AccessoriesTwo = no data stored
bai ACRoomthermostat = no data stored
bai averageIgnitiontime = no data stored
bai BlockTimeHcMax = no data stored
bai BoilerType = no data stored
bai ChangesDSN = no data stored
bai CirPump = no data stored
bai CounterStartattempts1 = no data stored
bai CounterStartattempts2 = no data stored
bai CounterStartAttempts3 = no data stored
bai CounterStartAttempts4 = no data stored
bai currenterror = no data stored
bai DateTime = no data stored
bai dcfState = no data stored
bai DCFTimeDate = no data stored
bai DCRoomthermostat = no data stored
bai DeactivationsIFC = no data stored
bai DeactivationsTemplimiter = no data stored
bai DeltaFlowReturnMax = no data stored
bai DisplayMode = no data stored
bai DSN = no data stored
bai DSNOffset = no data stored
bai DSNStart = no data stored
bai EBusHeatcontrol = no data stored
bai EbusSourceOn = no data stored
bai EbusVoltage = no data stored
bai errorhistory = no data stored
bai expertlevel_ReturnTemp = no data stored
bai ExternalFaultmessage = no data stored
bai externalFlowTempDesired = no data stored
bai externalHwcSwitch = no data stored
bai ExternGasvalve = no data stored
bai ExtFlowTempDesiredMin = no data stored
bai ExtStorageModulCon = no data stored
bai extWP = no data stored
bai FanHours = no data stored
bai FanMaxSpeedOperation = no data stored
bai FanMinSpeedOperation = no data stored
bai FanPWMSum = no data stored
bai FanPWMTest = no data stored
bai FanSpeed = no data stored
bai FanSpeedOffsetMax = no data stored
bai FanSpeedOffsetMin = no data stored
bai FanStarts = no data stored
bai Flame = no data stored
bai FlameSensingASIC = no data stored
bai FloorHeatingContact = no data stored
bai FlowsetHcMax = no data stored
bai FlowsetHwcMax = no data stored
bai FlowSetPotmeter = no data stored
bai FlowTemp = no data stored
bai FlowTempDesired = no data stored
bai FlowTempMax = no data stored
bai Fluegasvalve = no data stored
bai FluegasvalveOpen = no data stored
bai Gasvalve3UC = no data stored
bai Gasvalve = no data stored
bai GasvalveASICFeedback = no data stored
bai GasvalveUC = no data stored
bai GasvalveUCFeedback = no data stored
bai HcHours = no data stored
bai HcPumpMode = no data stored
bai HcPumpStarts = no data stored
bai HcStarts = no data stored
bai HcUnderHundredStarts = no data stored
bai HeatingSwitch = no data stored
bai HoursTillService = no data stored
bai HwcDemand = no data stored
bai HwcHours = no data stored
bai HwcImpellorSwitch = no data stored
bai HwcPostrunTime = no data stored
bai HwcSetPotmeter = no data stored
bai HwcStarts = no data stored
bai HwcSwitch = no data stored
bai HwcTemp = no data stored
bai HwcTempDesired = no data stored
bai HwcTempMax = no data stored
bai HwcTypes = no data stored
bai HwcUnderHundredStarts = no data stored
bai HwcWaterflow = no data stored
bai HwcWaterflowMax = no data stored
bai Ignitor = no data stored
bai InitialisationEEPROM = no data stored
bai IonisationVoltageLevel = no data stored
bai maintenancedata_HwcTempMax = no data stored
bai maxIgnitiontime = no data stored
bai minIgnitiontime = no data stored
bai ModulationTempDesired = no data stored
bai OutdoorstempSensor = no data stored
bai OverflowCounter = no data stored
bai ParamToken = no data stored
bai PartloadHcKW = no data stored
bai PartloadHwcKW = no data stored
bai PartnumberBox = no data stored
bai PositionValveSet = no data stored
bai PowerValue = no data stored
bai PrAPSCounter = no data stored
bai PrAPSSum = no data stored
bai PrEnergyCountHc1 = no data stored
bai PrEnergyCountHc2 = no data stored
bai PrEnergyCountHc3 = no data stored
bai PrEnergyCountHwc1 = no data stored
bai PrEnergyCountHwc2 = no data stored
bai PrEnergyCountHwc3 = no data stored
bai PrEnergySumHc1 = no data stored
bai PrEnergySumHc2 = no data stored
bai PrEnergySumHc3 = no data stored
bai PrEnergySumHwc1 = no data stored
bai PrEnergySumHwc2 = no data stored
bai PrEnergySumHwc3 = no data stored
bai ProductionByte = no data stored
bai PrVortexFlowSensorValue = no data stored
bai PumpHours = no data stored
bai PumpHwcFlowNumber = no data stored
bai PumpHwcFlowSum = no data stored
bai RemainingBoilerblocktime = no data stored
bai ReturnRegulation = no data stored
bai ReturnTemp = no data stored
bai ReturnTempMax = no data stored
bai SecondPumpMode = no data stored
bai SerialNumber = no data stored
bai SetFactoryValues = no data stored
bai SetMode = no data stored
bai SHEMaxDeltaHwcFlow = no data stored
bai SHEMaxFlowTemp = no data stored
bai SolPostHeat = no data stored
bai Statenumber = no data stored
bai Status01 = no data stored
bai Status02 = no data stored
bai Status16 = no data stored
bai Status = no data stored
bai StatusCirPump = no data stored
bai Storageloadpump = no data stored
bai StorageLoadPumpHours = no data stored
bai StorageloadPumpStarts = no data stored
bai StorageLoadTimeMax = no data stored
bai StoragereleaseClock = no data stored
bai StorageTemp = no data stored
bai StorageTempDesired = no data stored
bai StorageTempMax = no data stored
bai TargetFanSpeed = no data stored
bai TargetFanSpeedOutput = no data stored
bai TempDiffBlock = no data stored
bai TempDiffFailure = no data stored
bai TempGradientFailure = no data stored
bai Templimiter = no data stored
bai TemplimiterWithNTC = no data stored
bai TempMaxDiffExtTFT = no data stored
bai Testbyte = no data stored
bai TimerInputHc = no data stored
bai ValveMode = no data stored
bai ValveStarts = no data stored
bai VolatileLockout = no data stored
bai VolatileLockoutIFCGV = no data stored
bai VortexFlowSensor = no data stored
bai WarmstartDemand = no data stored
bai WarmstartOffset = no data stored
bai WaterHcFlowMax = no data stored
bai WaterPressure = no data stored
bai WaterpressureBranchControlOff = no data stored
bai WaterpressureMeasureCounter = no data stored
bai WaterpressureVariantSum = no data stored
bai WP = no data stored
bai WPPostrunTime = no data stored
bai WPSecondStage = no data stored
broadcast datetime = no data stored
broadcast error = no data stored
broadcast hwcStatus = no data stored
broadcast id = no data stored
broadcast id = no data stored
broadcast load = no data stored
broadcast outsidetemp = no data stored
broadcast signoflife = no data stored
broadcast vdatetime = no data stored
general valuerange = no data stored
memory eeprom = no data stored
memory ram = no data stored
scan id = no data stored
scan.08 = Vaillant;BAI00;0518;7401
scan.08 id = 21;08;49;0010002460;1300;014973;N3

ebus@boiler:~ $ ebusctl read FlowTemp
49.12;ok

ebus@boiler:~ $ ebusctl read ReturnTemp
36.38;64953;ok
`
What I want to do is read the values of FlowTemp and ReturnTemp every minute and store them in a file. I realise this is not a function of ebusd but I don't know where to start. Can anyone point me in the right direction please?

Mike

[G8GYW]

In case anyone else is doing this I now have a working python script which I run in a tmux session on a headless RPi.

The code has lost its indents in this forum!!

from subprocess import check_output
from datetime import datetime
import threading
def read_ebus():
threading.Timer(60.0, read_ebus).start()
file = open("vaillant_log.csv","a")
cmd = ["/usr/bin/ebusctl", "read", "-f"]
flow_stdout = check_output([*cmd, "FlowTemp"], encoding="utf8")
flow_temp = float(flow_stdout.split(";", maxsplit=1)[0])
return_stdout = check_output([*cmd, "ReturnTemp"], encoding="utf8")
return_temp = float(return_stdout.split(";", maxsplit=1)[0])
file.write(datetime.today().strftime('%Y-%m-%d'+"," '%H:%M:%S')+",")
file.write(str(flow_temp)+","+str(return_temp)+"\n")
file.close()
read_ebus()

Mike