def recover_lost_connection(connection: obd.OBD, fast: bool,
timeout: float) -> obd.OBD:
"""
Recover lost connection and return a new working connection handle.
"""
logging.info("recovering lost connection")
connection.close()
sleep(CONNECTION_WAIT_DELAY)
connection = get_obd_connection(fast=fast, timeout=timeout)
return connection
def setup():
adapters = scanner.scan("OBD")
if len( adapters ) == 0:
print "[!]\tNo adapters were found that have 'OBD' in their name.\nExiting..."
else:
global adapter
adapter = OBD( type="bluetooth", addr=adapters[0]['addr'], name=adapters[0]['name'], baud=BAUD )
adapter.bind()
adapter.connect()
print(SendOBD("ate0"))
print(SendOBD("atl0"))
print(SendOBD("ath0"))
def bluetooth(): adapters = scanner.scan( "OBD" ) if len( adapters ) == 0: print "[!]\tNo adapters were found that have 'OBD' in their name.\nExiting..." # Adapters were found. else: # Grab the first adapter returned. # adapter = OBD( adapters[0]['addr'], adapters[0]['name'], BAUD ) adapter = OBD( type="bluetooth", addr=adapters[0]['addr'], name=adapters[0]['name'], baud=BAUD ) adapter.bind() adapter.connect()
def run(self):
"""
Main class function
:return:
"""
while True:
if self.connection:
if not self.connection.status() == OBDStatus.CAR_CONNECTED:
self.connection = OBD(self.port, self.baud, self.protocol)
elif self.connection.status() == OBDStatus.CAR_CONNECTED:
self.get_all_pids()
else:
self.init_bt()
self.connection = OBD(self.port, self.baud, self.protocol)
def bluetooth():
"""Bluetooth OBD-II Range Test
This method manages all range testing of a bluetooth OBD-II adapter.
"""
# Scan for all adapters.
adapters = scanner.scan( "OBD" )
# No adapters were found.
if len( adapters ) == 0:
print "[!]\tNo adapters were found that have 'OBD' in their name.\nExiting..."
# Adapters were found.
else:
# Grab the first adapter returned.
# adapter = OBD( adapters[0]['addr'], adapters[0]['name'], BAUD )
adapter = OBD( type="bluetooth", addr=adapters[0]['addr'], name=adapters[0]['name'], baud=BAUD )
adapter.bind()
adapter.connect()
# Setup the file manager.
fm = FileManager()
# Write header to CSV file.
fm.writeCSV( csvfile, [ "Iteration", "RX/TX Time" ] )
# Save the starting time.
starttime = datetime.now()
###
# Run the range test.
###
test( adapter, fm )
# Get the time when testing completes.
finishtime = datetime.now()
# Create a plot of the values.
columns = getColumns( fm.readCSV( csvfile ) )
# Create plot.
figurename = plotter.generateLinePlot( columns["Iteration"][1:len(columns["Iteration"])], columns["RX/TX Time"][1:len(columns["RX/TX Time"])], "Bluetooth Range Test", "Iteration", "(RX - TX) Time [sec]", ("rangetest_" + finishtime.strftime( "%H_%M_%S" )), "png" )
# Write ending results.
print "\tTime to completion: " + str( finishtime - starttime )
print "\tCSV File: " + csvfile
print "\tPlot Image: " + figurename
def wifi():
"""WiFi OBD-II Range Test
This method manages all range testing of a wifi OBD-II adapter.
"""
global IP, PORT
adapter = OBD(type="wifi", name="OBD", ip=IP, port=PORT)
adapter.connect()
# Setup the file manager.
fm = FileManager()
# Write header to CSV file.
fm.writeCSV(csvfile, ["Iteration", "RX/TX Time"])
# Save the starting time.
starttime = datetime.now()
###
# Run the range test.
###
test(adapter, fm)
# Get the time when testing completes.
finishtime = datetime.now()
# Create a plot of the values.
columns = getColumns(fm.readCSV(csvfile))
# Create plot.
figurename = plotter.generateLinePlot(
columns["Iteration"][1 : len(columns["Iteration"])],
columns["RX/TX Time"][1 : len(columns["RX/TX Time"])],
"WiFi Range Test",
"Iteration",
"(RX - TX) Time [sec]",
("rangetest_" + finishtime.strftime("%H_%M_%S")),
"png",
)
# Write ending results.
print "\tTime to completion: " + str(finishtime - starttime)
print "\tCSV File: " + csvfile
print "\tPlot Image: " + figurename
def speedometer():
speedData = OBD().query(commands.SPEED).value.to("mph")
speedText = str(speedData) + " mph"
speed.config(text=speedText,
bg='black',
fg='#F4511E',
font=("Helvetica", 72, "bold"))
speed.place(anchor='center', relx=0.5, rely=0.5)
root.after(1000, speedometer) # Update speedometer every second
def execute_obd_command(connection: obd.OBD, command_name: str):
"""
executes OBD interface query given command_name on OBD connection.
returns list or value
"""
if obd.commands.has_name(command_name):
obd_response = connection.query(obd.commands[command_name], force=True)
elif command_name in local_commands:
obd_response = connection.query(local_commands[command_name],
force=True)
else:
# raise LookupError(f"command <{command_name}> missing from python-obd and custom commands")
logging.warn(
f"LookupError: config file has command name <{command_name}> that doesn't exist"
)
return None
return obd_response
def setup():
global PRINT_ECHO_ACTIVE
global adapter
adapter = OBD()
adapter.connect()
ans = adapter.send_obd("ate0")
if (PRINT_ECHO_ACTIVE):
print(ans)
ans = adapter.send_obd("atl0")
if (PRINT_ECHO_ACTIVE):
print(ans)
ans = adapter.send_obd("ath0")
if (PRINT_ECHO_ACTIVE):
print(ans)
def connect(self, port):
global connected
global connOBD
if port == "":
self.status["text"] = "Connecting to ELM327..."
self.update()
connOBD = ObdData("")
else:
self.status["text"] = "Connecting to simulator..."
self.update()
connOBD = ObdData(port)
if OBD.is_connected(connOBD.conn):
connected = True
app.show_frame(Dashboard)
else:
self.status["text"] = "Error!!"
self.update()
def run(self):
print "\tOBDReader: connecting..."
#init
connection = OBD('/dev/ttyUSB1')
if not connection.is_connected():
print "\tOBDReader: Error: could not connecto to vehicle"
connection = OBD(self.port)
if not connection.is_connected():
print "\tOBDReader: Error: could not connect to obdsim"
return
self.connected = True
#print "\treadOBD thread connected. Entering main loop."
#main loop
while not self.stopped():
STATUS = connection.query(commands.STATUS) # MIL: bool, DTC_count int
MAF = connection.query(commands.MAF) # grams/sec
SPEED = connection.query(commands.SPEED) # kph
THROTTLE_POS = connection.query(commands.THROTTLE_POS) # %
RPM = connection.query(commands.RPM) # rpm
COOLANT_TEMP = connection.query(commands.COOLANT_TEMP) # deg C
GET_DTC = connection.query(commands.GET_DTC) # [('code','desc')]
print "|%s|" % GET_DTC
SharedData.lock.acquire()
try:
SharedData.MIL = STATUS.value.MIL if not STATUS.is_null() else None
SharedData.DTC_count = STATUS.value.DTC_count if not STATUS.is_null() else None
SharedData.MAF = MAF.value if not MAF.is_null() else None
SharedData.SPEED = SPEED.value if not SPEED.is_null() else None
SharedData.THROTTLE_POS = THROTTLE_POS.value if not THROTTLE_POS.is_null() else None
SharedData.RPM = RPM.value if not RPM.is_null() else None
SharedData.COOLANT_TEMP = COOLANT_TEMP.value if not COOLANT_TEMP.is_null() else None
SharedData.GET_DTC = GET_DTC.value if not GET_DTC.is_null else None
finally:
SharedData.lock.release()
connection.close()
print "\tOBDReader: disconnected."
from obd import OBD
from at_commands import *
HIREKEN_MAC_ADDR = '00:1D:A5:00:03:43'
adapter = OBD()
#adapter.scan()
#adapter.connect_specific(HIREKEN_MAC_ADDR)
adapter.connect()
print adapter.send_obd(DESC_PROTOCOL)
print adapter.send_obd(ECHO_OFF)
print adapter.send_obd(DISP_DEV_ID)
print adapter.send_obd(REPEAT_CMD)
print adapter.send_obd('010C')
print adapter.send_obd(WARM_START)
print adapter.send_obd('010C')
#adapter = OBD_User()
#adapter.connect()
#print adapter.send_obd(WARM_ATART)
# Weirdly the OBD port doesn't differentiate forward movement from backward movement
class OBDReading():
def __init__(self, connection):
self.throttle = connection.query(commands.THROTTLE_ACTUATOR).value.magnitude
self.rpm = connection.query(commands.RPM).value.magnitude
self.engineLoad = connection.query(commands.ENGINE_LOAD).value.magnitude
self.speed = connection.query(commands.SPEED).value.magnitude
if self.speed == 0 or self.speed is None:
self.moving = False
else:
print('moving')
self.moving = True
self.csvstring = "{},{},{},{},".format(self.throttle,self.rpm,self.engineLoad,self.speed)
conn = OBD(portstr='/dev/ttyUSB0',baudrate=38400,fast=False)
with open('/home/stephen/loggeddata.csv', 'w', newline='') as csvfile:
if conn.status() == OBDStatus.CAR_CONNECTED:
print(conn.status())
try:
while True:
reading = []
print('reading reset')
reading.append(OBDReading(conn))
if not reading[0].moving:
reading.append(OBDReading(conn))
if reading[1].moving:
print('{},{}'.format(reading[0].moving, reading[0].speed))
print('{},{}'.format(reading[1].moving, reading[1].speed))
print('beginlogging')
for _ in range(0,10):
# Blink display led 5 times to show device has started
# led will blink at 2500ms intervals while data is uploaded
# to firebase
led = LED(17)
led.off()
for i in range(0, 4):
led.on()
sleep(.5)
led.off()
sleep(.5)
# Connect to Car ECU
ecuAttempt = 1
try:
f.write('Attempting Connection to OBD \n')
connection = OBD()
f.write(str(connection) + '\n')
except:
sleep(.25)
f.write("Connection to ECU #:{} unsuccsesfull, retrying...\n".format(
str(ecuAttempt)))
ecuAttempt += 1
break
# Fetch the service account key for firebase from JSON file contents & initilize
cred = credentials.Certificate('OBDII.json')
initialize_app(
cred, {'databaseURL': 'https://obdiidata.firebaseio.com/'})
ref = db.reference('/')
class OBD2(Thread):
"""
OBD2 Class
"""
def __init__(self, *args, **kwargs):
super().__init__()
self.passkey = kwargs['passkey']
self.baud = kwargs['baud']
self.protocol = kwargs['protocol']
self.vef = kwargs['vef']
self.eds = kwargs['eds']
self.parent = kwargs['parent']
self.port = None
self.path = os.getcwd() + "/configs/pids.ini"
self.config = ConfigObj(self.path)
self.plottime = float(kwargs['time'])
self.connection = None
self.mai = 28.97 # Молекуляная масса воздуха
self.rgas = 8.314 # Газовая постоянная
self.d_gasoline = 750 # Плотность бензина (АИ-95)
self.daemon = True
self.pids = {}
mypids = list(self.config['PIDS'].sections)
for pid in mypids:
gtype = self.config['PIDS'][pid]['type']
if gtype == 'graph':
try:
color = list(self.config['PIDS'][pid]['color'])
except:
color = [1, 1, 1, 1]
gauge = GaugeGraph(name=self.config['PIDS'][pid]['name'],
color=color,
grid=True,
gtype=gtype,
parent=self)
self.pids[pid] = {
'values': [],
'name': self.config['PIDS'][pid]['name'],
'gauge': gauge
}
elif gtype == 'label':
try:
color = list(self.config['PIDS'][pid]['color'])
except:
color = [1, 1, 1, 1]
gauge = GaugeLabel(name=self.config['PIDS'][pid]['name'],
color=color,
gtype=gtype,
parent=self)
self.pids[pid] = {
'value': 0,
'name': self.config['PIDS'][pid]['name'],
'gauge': gauge
}
self.start()
self._stop_event = Event()
def init_bt(self):
"""
Connect to OBDII bt device
"""
devices = bluetooth.discover_devices(duration=4,
lookup_names=True,
flush_cache=True,
lookup_class=False)
print(devices)
for device in devices:
if device[1] == 'OBDII':
addr = device[0]
subprocess.call("kill -9 `pidof bluetooth-agent`", shell=True)
port = 1
status = subprocess.call("bluetooth-agent " + self.passkey +
" &",
shell=True)
try:
self.port = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
self.port.connect((addr, port))
except bluetooth.btcommon.BluetoothError as err:
print('Bluetooth couldn\'t connect due to error: \n')
print(err)
pass
def run(self):
"""
Main class function
:return:
"""
while True:
if self.connection:
if not self.connection.status() == OBDStatus.CAR_CONNECTED:
self.connection = OBD(self.port, self.baud, self.protocol)
elif self.connection.status() == OBDStatus.CAR_CONNECTED:
self.get_all_pids()
else:
self.init_bt()
self.connection = OBD(self.port, self.baud, self.protocol)
def get_pid(self, pid):
"""
Get data for specific PID
:param pid:
:return:
"""
if self.connection.status() == OBDStatus.CAR_CONNECTED:
cmd = commands[pid]
response = self.connection.query(cmd)
if response == "":
return None
else:
res = response.value.magnitude
return res
else:
print("Not connected to OBD2")
return None
def get_all_pids(self):
"""
Get data from all pids from internal list
:return:
"""
for pid in self.pids.keys():
val = self.get_pid(pid)
gtype = self.pids[pid]['gauge'].gtype
if gtype == 'graph':
values_list = self.pids[pid]['values']
values_list.append(val)
self.pids[pid]['values'] = values_list[-49:]
if gtype == 'label':
self.pids[pid]['value'] = val
self.pids[pid]['gauge'].update()
sleep(self.plottime)
def fuel_consumption(self):
"""
Calculates fuel consumption based on MAP sensor
:return:
"""
rpm = int(self.get_pid("RPM"))
intake_temp = celsius_to_kelvin(self.get_pid("INTAKE_TEMP"))
intake_pressure = self.get_pid("INTAKE_PRESSURE")
speed = self.get_pid("SPEED")
if speed > 0:
if (rpm != -999) and (intake_temp != -999) and (intake_pressure !=
-999):
vfl = ((((((rpm * intake_pressure / (intake_temp * 2)) / 60) *
(self.vef / 100) * self.eds * self.mai / self.rgas) /
14.7) / self.d_gasoline) * 3600) * 100 / speed
else:
vfl = 0
units = "LPK"
else:
if (rpm != -999) and (intake_temp != -999) and (intake_pressure !=
-999):
vfl = (((((rpm * intake_pressure / (intake_temp * 2)) / 60) *
(self.vef / 100) * self.eds * self.mai / self.rgas) /
14.7) / self.d_gasoline) * 3600
else:
vfl = 0
units = "LPH"
return (vfl, units)
def get_available_pids(self):
"""
Get a list of available PIDS
:return:
"""
for command in self.connection.supported_commands:
try:
response = self.connection.query(command)
print("PID : " + str(command) + " -> " + str(response.value))
sleep(self.plottime)
except:
print("PID : " + str(command) + "said OOPS!")
def get_errors(self):
"""
Get the current errors list
:return:
"""
try:
cmd = commands["GET_DTC"]
response = self.connection.query(cmd)
if response == "":
res = "None"
else:
res = response.value
return res
except Exception as exceptn:
return exceptn
def clear_errors(self):
"""
Clear errors
:return:
"""
try:
cmd = commands["CLEAR_DTC"]
self.connection.query(cmd)
return None
except Exception as exceptn:
return exceptn
from obd import OBD # Create the OBD object - we will leave the port blank so the app will run a port scan and let us know which port # the OBD connector will be plugged into. This will be different on each device so this may help debug some initial # issues when running on the pi for the first time conn = OBD(portstr=None, baudrate=None, protocol=None, fast=True)
