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https://github.com/uhi22/pyPLC.git
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Merge pull request #7 from jsphuebner/chademo_back
added CHAdeMO backend
This commit is contained in:
commit
b22c82faf4
4 changed files with 88 additions and 2 deletions
2
.gitignore
vendored
2
.gitignore
vendored
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@ -8,3 +8,5 @@ testresults.txt
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/log
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/local
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*.bak
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*.pyc
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@ -99,6 +99,10 @@ testsuite_enable = No
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# in form of UDP Syslog messages. For details see in udplog.py.
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udp_syslog_enable = Yes
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# Set backend for obtaining charging parameters, we start with CHAdeMO CAN for now
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# Need to make a simulator device and maybe a celeron device?
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charge_parameter_backend = chademo
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# REST callback for SoC states. Comment out to disable. Do not leave a trailing slash
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soc_callback_enabled = False
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soc_callback_endpoint = http://1.1.1.1
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@ -425,6 +425,10 @@ class fsmPev():
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if (strConverterResult.find('"EVSEProcessing": "Finished"')>0):
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self.publishStatus("ChargeParams discovered")
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self.addToTrace("Checkpoint550: ChargeParams are discovered. Will change to state C.")
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#Report charger paramters
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maxI = combineValueAndMultiplier(y["EVSEMaximumCurrentLimit.Value"], y["EVSEMaximumCurrentLimit.Multiplier"])
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maxV = combineValueAndMultiplier(y["EVSEMaximumVoltageLimit.Value"], y["EVSEMaximumVoltageLimit.Multiplier"])
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self.hardwareInterface.setChargerParameters(maxV, maxI)
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# pull the CP line to state C here:
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self.hardwareInterface.setStateC()
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self.addToTrace("Checkpoint555: Locking the connector.")
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@ -650,9 +654,13 @@ class fsmPev():
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strResponseCode = y["ResponseCode"]
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strEVSEPresentVoltageValue = y["EVSEPresentVoltage.Value"]
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strEVSEPresentVoltageMultiplier = y["EVSEPresentVoltage.Multiplier"]
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strEVSEPresentCurrentValue = y["EVSEPresentCurrent.Value"]
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strEVSEPresentCurrentMultiplier = y["EVSEPresentCurrent.Multiplier"]
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u = combineValueAndMultiplier(strEVSEPresentVoltageValue, strEVSEPresentVoltageMultiplier)
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i = combineValueAndMultiplier(strEVSEPresentCurrentValue, strEVSEPresentCurrentMultiplier)
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self.callbackShowStatus(format(u,".1f"), "EVSEPresentVoltage")
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strEVSEStatusCode = y["DC_EVSEStatus.EVSEStatusCode"]
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self.hardwareInterface.setChargerVoltageAndCurrent(u, i)
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except:
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self.addToTrace("ERROR: Could not decode the PreChargeResponse")
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if (strResponseCode!="OK"):
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@ -16,6 +16,10 @@ if (getConfigValue("digital_output_device")=="beaglebone"):
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# In case we run on beaglebone, we want to use GPIO ports.
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import Adafruit_BBIO.GPIO as GPIO
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if (getConfigValue("charge_parameter_backend")=="chademo"):
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# In case we use the CHAdeMO backend, we want to use CAN
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import can
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class hardwareInterface():
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def needsSerial(self):
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# Find out, whether we need a serial port. This depends on several configuration items.
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@ -141,6 +145,14 @@ class hardwareInterface():
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# return self.lock_confirmed
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return 1 # todo: use the real connector lock feedback
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def setChargerParameters(self, maxVoltage, maxCurrent):
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self.maxChargerVoltage = int(maxVoltage)
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self.maxChargerCurrent = int(maxCurrent)
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def setChargerVoltageAndCurrent(self, voltageNow, currentNow):
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self.chargerVoltage = int(voltageNow)
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self.chargerCurrent = int(currentNow)
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def getInletVoltage(self):
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# uncomment this line, to take the simulated inlet voltage instead of the really measured
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# self.inletVoltage = self.simulatedInletVoltage
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@ -149,6 +161,8 @@ class hardwareInterface():
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def getAccuVoltage(self):
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if (getConfigValue("digital_output_device")=="celeron55device"):
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return self.accuVoltage
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elif getConfigValue("charge_parameter_backend")=="chademo":
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return self.accuVoltage
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#todo: get real measured voltage from the accu
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self.accuVoltage = 230
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return self.accuVoltage
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@ -161,12 +175,16 @@ class hardwareInterface():
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if self.accuMaxCurrent >= EVMaximumCurrentLimit:
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return EVMaximumCurrentLimit
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return self.accuMaxCurrent
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elif getConfigValue("charge_parameter_backend")=="chademo":
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return self.accuMaxCurrent #set by CAN
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#todo: get max charging current from the BMS
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self.accuMaxCurrent = 10
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return self.accuMaxCurrent
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def getAccuMaxVoltage(self):
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if getConfigValue("charge_target_voltage"):
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if getConfigValue("charge_parameter_backend")=="chademo":
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return self.accuMaxVoltage #set by CAN
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elif getConfigValue("charge_target_voltage"):
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self.accuMaxVoltage = getConfigValue("charge_target_voltage")
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else:
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#todo: get max charging voltage from the BMS
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@ -191,6 +209,13 @@ class hardwareInterface():
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return self.simulatedSoc
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def initPorts(self):
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if (getConfigValue("charge_parameter_backend") == "chademo"):
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filters = [
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{"can_id": 0x100, "can_mask": 0x7FF, "extended": False},
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{"can_id": 0x101, "can_mask": 0x7FF, "extended": False},
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{"can_id": 0x102, "can_mask": 0x7FF, "extended": False}]
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self.canbus = can.interface.Bus(bustype='socketcan', channel="can0", can_filters = filters)
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if (getConfigValue("digital_output_device") == "beaglebone"):
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# Port configuration according to https://github.com/jsphuebner/pyPLC/commit/475f7fe9f3a67da3d4bd9e6e16dfb668d0ddb1d6
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GPIO.setup("P8_16", GPIO.OUT) #output for port relays
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@ -209,10 +234,17 @@ class hardwareInterface():
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self.lock_confirmed = False # Confirmation from hardware
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self.cp_pwm = 0.0
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self.soc_percent = 0.0
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self.capacity = 0.0
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self.accuMaxVoltage = 0.0
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self.accuMaxCurrent = 0.0
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self.contactor_confirmed = False # Confirmation from hardware
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self.plugged_in = None # None means "not known yet"
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self.maxChargerVoltage = 0
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self.maxChargerCurrent = 10
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self.chargerVoltage = 0
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self.chargerCurrent = 0
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self.logged_inlet_voltage = None
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self.logged_dc_link_voltage = None
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self.logged_cp_pwm = None
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@ -336,6 +368,9 @@ class hardwareInterface():
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# 0.5 charging needs ~8s, good for automatic test case runs.
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self.simulatedSoc = self.simulatedSoc + deltaSoc
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if (getConfigValue("charge_parameter_backend")=="chademo"):
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self.mainfunction_chademo()
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if (getConfigValue("digital_output_device")=="dieter"):
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self.mainfunction_dieter()
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@ -377,6 +412,43 @@ class hardwareInterface():
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#self.addToTrace(str(len(s)) + " bytes received: " + s)
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self.evaluateReceivedData_celeron55device(s)
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def mainfunction_chademo(self):
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message = self.canbus.recv(0)
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if message:
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if message.arbitration_id == 0x100:
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vtg = (message.data[1] << 8) + message.data[0]
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if self.accuVoltage != vtg:
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self.addToTrace("CHAdeMO: Set battery voltage to %d V" % vtg)
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self.accuVoltage = vtg
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if self.capacity != message.data[6]:
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self.addToTrace("CHAdeMO: Set capacity to %d" % message.data[6])
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self.capacity = message.data[6]
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msg = can.Message(arbitration_id=0x108, data=[ 0, self.maxChargerVoltage & 0xFF, self.maxChargerVoltage >> 8, self.maxChargerCurrent, 0, 0, 0, 0], is_extended_id=False)
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self.canbus.send(msg)
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#Report unspecified version 10, this makes our custom implementation send the momentary
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#battery voltage in 0x100 bytes 0 and 1
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status = 4 if self.maxChargerVoltage > 0 else 0 #report connector locked
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msg = can.Message(arbitration_id=0x109, data=[ 10, self.chargerVoltage & 0xFF, self.chargerVoltage >> 8, self.chargerCurrent, 0, status, 0, 0], is_extended_id=False)
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self.canbus.send(msg)
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if message.arbitration_id == 0x102:
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vtg = (message.data[2] << 8) + message.data[1]
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if self.accuMaxVoltage != vtg:
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self.addToTrace("CHAdeMO: Set target voltage to %d V" % vtg)
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self.accuMaxVoltage = vtg
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if self.accuMaxCurrent != message.data[3]:
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self.addToTrace("CHAdeMO: Set current request to %d A" % message.data[3])
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self.accuMaxCurrent = message.data[3]
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if self.capacity > 0:
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soc = message.data[6] / self.capacity * 100
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if self.simulatedSoc != soc:
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self.addToTrace("CHAdeMO: Set SoC to %d %%" % soc)
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self.simulatedSoc = soc
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def myPrintfunction(s):
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print("myprint " + s)
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