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feature: added ini file. Prepared GPIO for beaglebone.

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uhi22 2023-04-15 20:35:51 +02:00
parent 68a4a6ef85
commit 658beda580
6 changed files with 142 additions and 26 deletions
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3
addressManager.py
View file

@ -85,7 +85,8 @@ class addressManager():
# 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
# 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
# print("This is a heading")
if (line.find(": eth")>0):
sFind = ": " + getConfigValue("eth_interface") # e.g. "eth0"
if (line.find(sFind)>0):
# print("This is the heading for the ethernet.")
blInTheEthernetChapter = 1 # we are in the ethernet chapter
else:

22
configmodule.py Normal file
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@ -0,0 +1,22 @@
# See https://docs.python.org/3/library/configparser.html
import configparser
config = configparser.ConfigParser()
config.read('pyPlc.ini')
def getConfigValue(s):
return config['general'][s]
def getConfigValueBool(s):
return config.getboolean('general', s)
if __name__ == "__main__":
print("Testing configmodule...")
print(str(config.sections()))
print(config['general']['mode'])
for key in config['general']:
print(key + " has value " + config['general'][key])
print(config.getboolean('general', 'display_via_serial'))

14
fsmPev.py
View file

@ -10,8 +10,8 @@ from datetime import datetime
from helpers import prettyHexMessage, compactHexMessage, combineValueAndMultiplier
from exiConnector import * # for EXI data handling/converting
import json
from configmodule import getConfigValue, getConfigValueBool
PARAM_U_DELTA_MAX_FOR_END_OF_PRECHARGE = 10 # volts between inlet and accu, to change from PreCharge to PowerDelivery
stateNotYetInitialized = 0
stateConnecting = 1
@ -393,7 +393,7 @@ class fsmPev():
except:
self.addToTrace("ERROR: Could not decode the PreChargeResponse")
self.addToTrace("PreChargeResponse received.")
if (self.USE_EVSEPRESENTVOLTAGE_FOR_PRECHARGE_END):
if (getConfigValueBool("use_evsepresentvoltage_for_precharge_end")):
# We want to use the EVSEPresentVoltage, which was reported by the charger, as end-criteria for the precharging.
s = "EVSEPresentVoltage " + str(u) + "V, "
else:
@ -402,7 +402,7 @@ class fsmPev():
s = "U_Inlet " + str(u) + "V, "
s= s + "U_Accu " + str(self.hardwareInterface.getAccuVoltage()) + "V"
self.addToTrace(s)
if (abs(u-self.hardwareInterface.getAccuVoltage()) < PARAM_U_DELTA_MAX_FOR_END_OF_PRECHARGE):
if (abs(u-self.hardwareInterface.getAccuVoltage()) < float(getConfigValue("u_delta_max_for_end_of_precharge"))):
self.addToTrace("Difference between accu voltage and inlet voltage is small. Sending PowerDeliveryReq.")
self.publishStatus("PreCharge done")
if (self.isLightBulbDemo):
@ -471,7 +471,7 @@ class fsmPev():
self.callbackShowStatus(format(u,".1f"), "EVSEPresentVoltage")
except:
self.addToTrace("ERROR: Could not decode the PreChargeResponse")
if (self.USE_PHYSICAL_INLET_VOLTAGE_DURING_CHARGELOOP):
if (getConfigValueBool("use_physical_inlet_voltage_during_chargeloop")):
# Instead of using the voltage which is reported by the charger, use the physically measured.
u = self.hardwareInterface.getInletVoltage()
# as long as the accu is not full and no stop-demand from the user, we continue charging
@ -606,14 +606,10 @@ class fsmPev():
self.cyclesInState = 0
self.DelayCycles = 0
self.rxData = []
self.isLightBulbDemo = True
self.isLightBulbDemo = getConfigValueBool("light_bulb_demo")
self.isBulbOn = False
self.cyclesLightBulbDelay = 0
self.isUserStopRequest = False
self.USE_EVSEPRESENTVOLTAGE_FOR_PRECHARGE_END = 1 # to configure, which criteria is used for end of PreCharge
self.USE_PHYSICAL_INLET_VOLTAGE_DURING_CHARGELOOP = 0 # to configure, whether to display the measured or charger-reported
# voltage during the charging loop
# we do NOT call the reInit, because we want to wait with the connection until external trigger comes
def __del__(self):

49
hardwareInterface.py
View file

@ -9,8 +9,23 @@
import serial # the pyserial
from serial.tools.list_ports import comports
from time import sleep
from configmodule import getConfigValue, getConfigValueBool
if (getConfigValue("digital_output_device")=="beaglebone"):
# In case we run on beaglebone, we want to use GPIO ports.
import Adafruit_BBIO.GPIO as GPIO
class hardwareInterface():
def needsSerial(self):
# Find out, whether we need a serial port. This depends on several configuration items.
if (getConfigValueBool("display_via_serial")):
return True # a display is expected to be connected to serial port.
if (getConfigValue("digital_output_device")=="dieter"):
return True # a "dieter" output device is expected to be connected on serial port.
if (getConfigValue("analog_input_device")=="dieter"):
return True # a "dieter" input device is expected to be connected on serial port.
return False # non of the functionalities need a serial port.
def findSerialPort(self):
ports = []
self.addToTrace('Available serial ports:')
@ -21,36 +36,49 @@ class hardwareInterface():
self.addToTrace('{:2}: {:20} {!r}'.format(n, port, desc))
ports.append(port)
if (len(ports)<1):
if (self.needsSerial()):
self.addToTrace("ERROR: No serial ports found. No hardware interaction possible.")
self.ser = None
self.isInterfaceOk = False
self.isSerialInterfaceOk = False
else:
self.addToTrace("We found no serial port, but also do not need it. No problem.")
self.ser = None
self.isSerialInterfaceOk = False
else:
self.addToTrace("ok, we take the first port, " + ports[0])
try:
self.ser = serial.Serial(ports[0], 19200, timeout=0)
self.isInterfaceOk = True
self.isSerialInterfaceOk = True
except:
self.addToTrace("ERROR: Could not open serial port.")
self.ser = None
self.isInterfaceOk = False
self.isSerialInterfaceOk = False
def addToTrace(self, s):
self.callbackAddToTrace("[HARDWAREINTERFACE] " + s)
def setStateB(self):
self.addToTrace("Setting CP line into state B.")
if (getConfigValue("digital_output_device")=="beaglebone"):
GPIO.output("P8_18", GPIO.LOW)
self.outvalue &= ~1
def setStateC(self):
self.addToTrace("Setting CP line into state C.")
if (getConfigValue("digital_output_device")=="beaglebone"):
GPIO.output("P8_18", GPIO.HIGH)
self.outvalue |= 1
def setPowerRelayOn(self):
self.addToTrace("Switching PowerRelay ON.")
if (getConfigValue("digital_output_device")=="beaglebone"):
GPIO.output("P8_16", GPIO.HIGH)
self.outvalue |= 2
def setPowerRelayOff(self):
self.addToTrace("Switching PowerRelay OFF.")
if (getConfigValue("digital_output_device")=="beaglebone"):
GPIO.output("P8_16", GPIO.LOW)
self.outvalue &= ~2
def setRelay2On(self):
@ -91,6 +119,11 @@ class hardwareInterface():
self.callbackShowStatus(format(self.simulatedSoc,".1f"), "soc")
return self.simulatedSoc
def initPorts(self):
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
GPIO.setup("P8_18", GPIO.OUT) #output for CP
def __init__(self, callbackAddToTrace=None, callbackShowStatus=None):
self.callbackAddToTrace = callbackAddToTrace
@ -101,6 +134,8 @@ class hardwareInterface():
self.inletVoltage = 0.0 # volts
self.rxbuffer = ""
self.findSerialPort()
self.initPorts()
def resetSimulation(self):
self.simulatedInletVoltage = 0.0 # volts
@ -111,7 +146,7 @@ class hardwareInterface():
self.simulatedInletVoltage = self.simulatedInletVoltage + 1.0 # simulate increasing voltage during PreCharge
def close(self):
if (self.isInterfaceOk):
if (self.isSerialInterfaceOk):
self.ser.close()
def evaluateReceivedData(self, s):
@ -122,7 +157,7 @@ class hardwareInterface():
if (len(s)==4):
try:
self.inletVoltage = int(s) / 1024.0 * 1.08 * (6250) / (4.7+4.7)
if (getConfigValue("analog_input_device")=="dieter"):
self.callbackShowStatus(format(self.inletVoltage,".1f"), "uInlet")
except:
# keep last known value, if nothing new valid was received.
@ -132,10 +167,12 @@ class hardwareInterface():
def showOnDisplay(self, s1, s2, s3):
# show the given string s on the display which is connected to the serial port
if (getConfigValueBool("display_via_serial") and self.isSerialInterfaceOk):
s = "lc" + s1 + "\n" + "lc" + s2 + "\n" + "lc" + s3 + "\n"
self.ser.write(bytes(s, "utf-8"))
def mainfunction(self):
if (getConfigValueBool("soc_simulation")):
if (self.simulatedSoc<100):
if ((self.outvalue & 2)!=0):
# while the relay is closed, simulate increasing SOC
@ -143,7 +180,7 @@ class hardwareInterface():
self.loopcounter+=1
if (self.isInterfaceOk):
if (self.isSerialInterfaceOk):
if (self.loopcounter>15):
self.loopcounter=0
# self.ser.write(b'hello world\n')

55
pyPlc.ini Normal file
View file

@ -0,0 +1,55 @@
[general]
# mode can be either PevMode to use as car, or EvseMode to use as charger
mode = PevMode
# Simulation without modem
# For development purposes, make it possible to run two instances (pev and evse) on one machine, without
# a modem connected. This feature is not tested since a long time, most likely does not work as intended.
# todo: replace isSimulationMode by this setting
is_simulation_without_modems = false
# The Ethernet interface. Usually eth0 on Raspberry.
# Todo: This setting is considered only on linux. Find a clean solution for windows is to be done.
eth_interface = eth0
# If a display is connected via serial line, e.g. an WIFI-KIT-32 running the software from https://github.com/uhi22/SerialToOLED
display_via_serial = yes
# LightBulbDemo turns on the relay with a short delay in the charging loop, to stabilize the voltage
# before the resistive load is connected.
light_bulb_demo = yes
# SOC simulation.
# In PevMode, simulate a rising SOC while charging.
soc_simulation = yes
# Device selection for the digital outputs, for CP state and power relays
# Possible options:
# dieter: Serial controlled device, which controls the digital outputs. E.g. arduino from https://github.com/uhi22/dieter
# beaglebone: GPIO pins of the beagleBone, as used in https://github.com/jsphuebner/pyPLC/tree/beaglebone
digital_output_device = dieter
#digital_output_device = beaglebone
# Device to read the physically measured inlet voltage in PevMode
# Either the high-voltage dieter from https://github.com/uhi22/dieter, which is connected on serial port.
# Or "none", if no measurement is intended.
#analog_input_device = dieter
analog_input_device = none
# Criteria for ending the PreCharge phase in PevMode
# Possible options:
# yes: use the EVSEPresentVoltage which is reported by the charger, to decide the end of the precharge
# no: use the physically measured inlet voltage to decide the end of the precharge
use_evsepresentvoltage_for_precharge_end = yes
# Use the physically measured inlet voltage to show on display during the charge loop.
# If false, we are showing the EVSEPresentVoltage which is reported by the charger.
use_physical_inlet_voltage_during_chargeloop = no
# Voltage threshold for the end-of-precharge decision
# This is the maximum difference voltage between the charger voltage and the accu voltage. If the actual voltage
# difference is lower than this threshold, we will close the power relay, to connect the accu to the charger.
# Unit: volt
u_delta_max_for_end_of_precharge = 10

5
pyPlc.py
View file

@ -11,6 +11,7 @@ import time
import pyPlcWorker
from pyPlcModes import *
import sys # for argv
from configmodule import getConfigValue, getConfigValueBool
startTime_ms = round(time.time()*1000)
@ -60,6 +61,10 @@ def cbShowStatus(s, selection=""):
root.update()
myMode = C_LISTEN_MODE
if (getConfigValue("mode")=="PevMode"):
myMode = C_PEV_MODE
if (getConfigValue("mode")=="EvseMode"):
myMode = C_EVSE_MODE
if (len(sys.argv) > 1):
if (sys.argv[1] == "P"):
myMode = C_PEV_MODE