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PevMode CableCheck draft

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uhi22 2022-11-18 12:27:24 +01:00
parent a10877cada
commit 0da4acd0b5
1 changed files with 30 additions and 5 deletions
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35
fsmPev.py
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@ -22,6 +22,9 @@ stateWaitForPreChargeResponse = 8
stateWaitForPowerDeliveryResponse = 9
stateNotYetInitialized = 10
dinEVSEProcessingType_Finished = "0"
dinEVSEProcessingType_Ongoing = "1"
class fsmPev():
def enterState(self, n):
print("from " + str(self.state) + " entering " + str(n))
@ -30,7 +33,12 @@ class fsmPev():
def isTooLong(self):
# The timeout handling function.
return (self.cyclesInState > 20)
limit = 30 # number of call cycles until timeout
if (self.state==stateWaitForCableCheckResponse):
limit = 30*30 # CableCheck may need some time. Wait at least 30s.
if (self.state==stateWaitForPreChargeResponse):
limit = 30*30 # PreCharge may need some time. Wait at least 30s.
return (self.cyclesInState > limit)
def stateFunctionInitialized(self):
if (self.Tcp.isConnected):
@ -133,11 +141,28 @@ class fsmPev():
strConverterResult = exiDecode(exidata, "DD") # Decode DIN
print(strConverterResult)
if (strConverterResult.find("CableCheckRes")>0):
try:
y = json.loads(strConverterResult)
strResponseCode = y["ResponseCode"]
strEVSEProcessing = y["EVSEProcessing"]
print("[PEV] The CableCheck result is " + strResponseCode + " " + strEVSEProcessing)
except:
print("ERROR: Could not decode the CableCheckRes")
# todo: check the request content, and fill response parameters
msg = addV2GTPHeader(exiEncode("EDG_"+self.sessionId)) # EDG for Encode, Din, PreCharge
print("responding " + prettyHexMessage(msg))
self.Tcp.transmit(msg)
self.enterState(stateWaitForPreChargeResponse)
# We have two cases here:
# 1) The charger says "cable check is finished and cable ok", by setting ResponseCode=OK and EVSEProcessing=Finished.
# 2) Else: The charger says "need more time or cable not ok". In this case, we just run into timeout and start from the beginning.
if ((strEVSEProcessing==dinEVSEProcessingType_Finished) and (strResponseCode=="OK")):
msg = addV2GTPHeader(exiEncode("EDG_"+self.sessionId)) # EDG for Encode, Din, PreCharge
print("responding " + prettyHexMessage(msg))
self.Tcp.transmit(msg)
self.enterState(stateWaitForPreChargeResponse)
else:
# cable check not yet finished or finished with bad result -> try again
msg = addV2GTPHeader(exiEncode("EDF_"+self.sessionId)) # EDF for Encode, Din, CableCheck
print("responding " + prettyHexMessage(msg))
self.Tcp.transmit(msg)
if (self.isTooLong()):
self.enterState(0)