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added CHAdeMO backend

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Demo User 2023-06-20 10:43:03 +00:00
parent 7f233f1baa
commit 219ca7f51d
2 changed files with 65 additions and 1 deletions
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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

62
hardwareInterface.py
View file

@ -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 run on beaglebone, we want to use GPIO ports.
import can
class hardwareInterface():
def needsSerial(self):
# Find out, whether we need a serial port. This depends on several configuration items.
@ -149,6 +153,8 @@ 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 +167,17 @@ 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")
self.accuMaxVoltage = getConfigValue("charge_target_voltage")
elif getConfigValue("charge_parameter_backend")=="chademo":
return self.accuMaxVoltage #set by CAN
else:
#todo: get max charging voltage from the BMS
self.accuMaxVoltage = 230
@ -191,6 +201,13 @@ 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
@ -209,6 +226,8 @@ 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"
@ -336,6 +355,9 @@ 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 +398,44 @@ 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]
#TODO: determine maximum charger current and voltage and also actual current and voltage
msg = can.Message(arbitration_id=0x108, data=[ 0, 0, 0, 125, 0, 0, 0, 0], is_extended_id=False)
self.canbus.send(msg)
#Report unspecified version 10, this makes our custom implementation send the
#battery voltage in 0x100 bytes 0 and 1
status = 4 #report connector locked
msg = can.Message(arbitration_id=0x109, data=[ 10, 0, 0, 0, 0, 0, 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)