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Merge pull request #7 from jsphuebner/chademo_back

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added CHAdeMO backend
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uhi22 2023-06-22 22:18:02 +02:00 committed by GitHub
commit b22c82faf4
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4 changed files with 88 additions and 2 deletions
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2
.gitignore vendored
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@ -8,3 +8,5 @@ testresults.txt
/log
/local
*.bak
*.pyc

4
doc/pyPlc.ini.template
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@ -99,6 +99,10 @@ testsuite_enable = No
# in form of UDP Syslog messages. For details see in udplog.py.
udp_syslog_enable = Yes
# Set backend for obtaining charging parameters, we start with CHAdeMO CAN for now
# Need to make a simulator device and maybe a celeron device?
charge_parameter_backend = chademo
# REST callback for SoC states. Comment out to disable. Do not leave a trailing slash
soc_callback_enabled = False
soc_callback_endpoint = http://1.1.1.1

8
fsmPev.py
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@ -425,6 +425,10 @@ class fsmPev():
if (strConverterResult.find('"EVSEProcessing": "Finished"')>0):
self.publishStatus("ChargeParams discovered")
self.addToTrace("Checkpoint550: ChargeParams are discovered. Will change to state C.")
#Report charger paramters
maxI = combineValueAndMultiplier(y["EVSEMaximumCurrentLimit.Value"], y["EVSEMaximumCurrentLimit.Multiplier"])
maxV = combineValueAndMultiplier(y["EVSEMaximumVoltageLimit.Value"], y["EVSEMaximumVoltageLimit.Multiplier"])
self.hardwareInterface.setChargerParameters(maxV, maxI)
# pull the CP line to state C here:
self.hardwareInterface.setStateC()
self.addToTrace("Checkpoint555: Locking the connector.")
@ -650,9 +654,13 @@ class fsmPev():
strResponseCode = y["ResponseCode"]
strEVSEPresentVoltageValue = y["EVSEPresentVoltage.Value"]
strEVSEPresentVoltageMultiplier = y["EVSEPresentVoltage.Multiplier"]
strEVSEPresentCurrentValue = y["EVSEPresentCurrent.Value"]
strEVSEPresentCurrentMultiplier = y["EVSEPresentCurrent.Multiplier"]
u = combineValueAndMultiplier(strEVSEPresentVoltageValue, strEVSEPresentVoltageMultiplier)
i = combineValueAndMultiplier(strEVSEPresentCurrentValue, strEVSEPresentCurrentMultiplier)
self.callbackShowStatus(format(u,".1f"), "EVSEPresentVoltage")
strEVSEStatusCode = y["DC_EVSEStatus.EVSEStatusCode"]
self.hardwareInterface.setChargerVoltageAndCurrent(u, i)
except:
self.addToTrace("ERROR: Could not decode the PreChargeResponse")
if (strResponseCode!="OK"):

76
hardwareInterface.py
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@ -16,6 +16,10 @@ if (getConfigValue("digital_output_device")=="beaglebone"):
# In case we run on beaglebone, we want to use GPIO ports.
import Adafruit_BBIO.GPIO as GPIO
if (getConfigValue("charge_parameter_backend")=="chademo"):
# In case we use the CHAdeMO backend, we want to use CAN
import can
class hardwareInterface():
def needsSerial(self):
# Find out, whether we need a serial port. This depends on several configuration items.
@ -140,6 +144,14 @@ class hardwareInterface():
#if (getConfigValue("digital_output_device")=="celeron55device"):
# return self.lock_confirmed
return 1 # todo: use the real connector lock feedback
def setChargerParameters(self, maxVoltage, maxCurrent):
self.maxChargerVoltage = int(maxVoltage)
self.maxChargerCurrent = int(maxCurrent)
def setChargerVoltageAndCurrent(self, voltageNow, currentNow):
self.chargerVoltage = int(voltageNow)
self.chargerCurrent = int(currentNow)
def getInletVoltage(self):
# uncomment this line, to take the simulated inlet voltage instead of the really measured
@ -149,6 +161,8 @@ class hardwareInterface():
def getAccuVoltage(self):
if (getConfigValue("digital_output_device")=="celeron55device"):
return self.accuVoltage
elif getConfigValue("charge_parameter_backend")=="chademo":
return self.accuVoltage
#todo: get real measured voltage from the accu
self.accuVoltage = 230
return self.accuVoltage
@ -161,13 +175,17 @@ class hardwareInterface():
if self.accuMaxCurrent >= EVMaximumCurrentLimit:
return EVMaximumCurrentLimit
return self.accuMaxCurrent
elif getConfigValue("charge_parameter_backend")=="chademo":
return self.accuMaxCurrent #set by CAN
#todo: get max charging current from the BMS
self.accuMaxCurrent = 10
return self.accuMaxCurrent
def getAccuMaxVoltage(self):
if getConfigValue("charge_target_voltage"):
self.accuMaxVoltage = getConfigValue("charge_target_voltage")
if getConfigValue("charge_parameter_backend")=="chademo":
return self.accuMaxVoltage #set by CAN
elif getConfigValue("charge_target_voltage"):
self.accuMaxVoltage = getConfigValue("charge_target_voltage")
else:
#todo: get max charging voltage from the BMS
self.accuMaxVoltage = 230
@ -191,6 +209,13 @@ class hardwareInterface():
return self.simulatedSoc
def initPorts(self):
if (getConfigValue("charge_parameter_backend") == "chademo"):
filters = [
{"can_id": 0x100, "can_mask": 0x7FF, "extended": False},
{"can_id": 0x101, "can_mask": 0x7FF, "extended": False},
{"can_id": 0x102, "can_mask": 0x7FF, "extended": False}]
self.canbus = can.interface.Bus(bustype='socketcan', channel="can0", can_filters = filters)
if (getConfigValue("digital_output_device") == "beaglebone"):
# Port configuration according to https://github.com/jsphuebner/pyPLC/commit/475f7fe9f3a67da3d4bd9e6e16dfb668d0ddb1d6
GPIO.setup("P8_16", GPIO.OUT) #output for port relays
@ -209,10 +234,17 @@ class hardwareInterface():
self.lock_confirmed = False # Confirmation from hardware
self.cp_pwm = 0.0
self.soc_percent = 0.0
self.capacity = 0.0
self.accuMaxVoltage = 0.0
self.accuMaxCurrent = 0.0
self.contactor_confirmed = False # Confirmation from hardware
self.plugged_in = None # None means "not known yet"
self.maxChargerVoltage = 0
self.maxChargerCurrent = 10
self.chargerVoltage = 0
self.chargerCurrent = 0
self.logged_inlet_voltage = None
self.logged_dc_link_voltage = None
self.logged_cp_pwm = None
@ -336,6 +368,9 @@ class hardwareInterface():
# 0.5 charging needs ~8s, good for automatic test case runs.
self.simulatedSoc = self.simulatedSoc + deltaSoc
if (getConfigValue("charge_parameter_backend")=="chademo"):
self.mainfunction_chademo()
if (getConfigValue("digital_output_device")=="dieter"):
self.mainfunction_dieter()
@ -376,6 +411,43 @@ class hardwareInterface():
s = "" # for the case we received corrupted data (not convertable as utf-8)
#self.addToTrace(str(len(s)) + " bytes received: " + s)
self.evaluateReceivedData_celeron55device(s)
def mainfunction_chademo(self):
message = self.canbus.recv(0)
if message:
if message.arbitration_id == 0x100:
vtg = (message.data[1] << 8) + message.data[0]
if self.accuVoltage != vtg:
self.addToTrace("CHAdeMO: Set battery voltage to %d V" % vtg)
self.accuVoltage = vtg
if self.capacity != message.data[6]:
self.addToTrace("CHAdeMO: Set capacity to %d" % message.data[6])
self.capacity = message.data[6]
msg = can.Message(arbitration_id=0x108, data=[ 0, self.maxChargerVoltage & 0xFF, self.maxChargerVoltage >> 8, self.maxChargerCurrent, 0, 0, 0, 0], is_extended_id=False)
self.canbus.send(msg)
#Report unspecified version 10, this makes our custom implementation send the momentary
#battery voltage in 0x100 bytes 0 and 1
status = 4 if self.maxChargerVoltage > 0 else 0 #report connector locked
msg = can.Message(arbitration_id=0x109, data=[ 10, self.chargerVoltage & 0xFF, self.chargerVoltage >> 8, self.chargerCurrent, 0, status, 0, 0], is_extended_id=False)
self.canbus.send(msg)
if message.arbitration_id == 0x102:
vtg = (message.data[2] << 8) + message.data[1]
if self.accuMaxVoltage != vtg:
self.addToTrace("CHAdeMO: Set target voltage to %d V" % vtg)
self.accuMaxVoltage = vtg
if self.accuMaxCurrent != message.data[3]:
self.addToTrace("CHAdeMO: Set current request to %d A" % message.data[3])
self.accuMaxCurrent = message.data[3]
if self.capacity > 0:
soc = message.data[6] / self.capacity * 100
if self.simulatedSoc != soc:
self.addToTrace("CHAdeMO: Set SoC to %d %%" % soc)
self.simulatedSoc = soc
def myPrintfunction(s):
print("myprint " + s)