def read_current_data(self, message: str) -> Measure:
time = datetime.datetime.now()
if(message == 'speed'):
return Measure(self.MOCK_SPEED, 'km/h', time)
elif(message == 'rpm'):
return Measure(self.MOCK_RPM, 'rpm', time)
else:
print("MockOBDDevice read_current_data not implemented for message: {}".format(message))
def test_mean():
"""Test the mean() method and test that the correct capacity is used"""
time = datetime.datetime.now()
units = "metres"
distance0 = Measure(5, units, time)
distance1 = Measure(6, units, time)
distance2 = Measure(12, units, time)
distance3 = Measure(20, units, time)
average_value = (5 + 6 + 12 + 20) / 4
name = "distance"
capacity = 5
accumulator = Accumulator(name, capacity)
assert accumulator.mean() == None
accumulator.push(distance0)
accumulator.push(distance1)
accumulator.push(distance2)
accumulator.push(distance3)
assert accumulator.mean().value == average_value
# push more entries to check that the previous entries are dropped
# once we go over the accumulator's capacity
distance4 = Measure(1, units, time)
distance5 = Measure(1, units, time)
distance6 = Measure(1, units, time)
distance7 = Measure(1, units, time)
distance8 = Measure(1, units, time)
accumulator.push(distance4)
accumulator.push(distance5)
accumulator.push(distance6)
accumulator.push(distance7)
accumulator.push(distance8)
assert accumulator.mean().value == 1
def test_newest():
time0 = datetime.datetime.now()
units = "metres"
distance0 = Measure(5, units, time0)
distance1 = Measure(6, units, time0)
name = "distance"
capacity = 5
accumulator = Accumulator(name, capacity)
assert accumulator.newest() == None
accumulator.push(distance0)
accumulator.push(distance1)
assert accumulator.newest().value == distance1.value
def read_temperature(self) -> Measure: """This mock thermometer returns an increasing temperature""" assert self._ready time = datetime.datetime.now() temperature = Measure(self._value, self.MOCK_UNITS, time) self._value = self._value + self.INCREMENT_VALUE return temperature
def read_voltage(self) -> Measure:
"""This mock voltmeter returns an increasing voltage"""
assert self._ready
time = datetime.datetime.now()
voltage = Measure(self._value, self.MOCK_UNITS, time)
self._value = self._value + self.INCREMENT_VALUE
return voltage
def read_pressure(self) -> Measure:
"""This mock barometer returns an increasing pressure"""
assert self._ready
time = datetime.datetime.now()
pressure = Measure(self._value, self.MOCK_UNITS, time)
self._value = self._value + self.INCREMENT_VALUE
return pressure
def test_distance():
value = 5
units = "metres"
time = datetime.datetime.now()
distance = Measure(value, units, time)
assert distance.value == value
assert distance.units == units
assert distance.time == time
def mean_measure(measures) -> Measure:
"""Given a non-empty list of Measures and given that the caller holds the lock,
Return a Measure with the mean value and the units & time from the 0th entry"""
sum_value = 0
for measure in measures:
sum_value += measure.value
average_value = sum_value / len(measures)
return Measure(average_value, measures[0].units, measures[0].time)
def test_minimum_maximum():
"""Test the minimum and maximum methods"""
time0 = datetime.datetime.now()
units = "metres"
distance0 = Measure(5, units, time0)
distance1 = Measure(6, units, time0)
distance2 = Measure(4, units, time0)
name = "distance"
capacity = 5
accumulator = Accumulator(name, capacity)
assert accumulator.minimum() == None
assert accumulator.maximum() == None
accumulator.push(distance0)
accumulator.push(distance1)
accumulator.push(distance2)
assert accumulator.minimum().value == distance2.value
assert accumulator.maximum().value == distance1.value
def test_median():
time = datetime.datetime.now()
units = "metres"
distance0 = Measure(5, units, time)
distance1 = Measure(6, units, time)
distance2 = Measure(12, units, time)
distance3 = Measure(20, units, time)
name = "distance"
capacity = 5
accumulator = Accumulator(name, capacity)
assert accumulator.median() == None
accumulator.push(distance0)
accumulator.push(distance1)
accumulator.push(distance2)
accumulator.push(distance3)
# use the upper middle measure if there are an even number
assert accumulator.median().value == 12
def get_measures(self):
from measure.measure import Measure
result = []
for xml_measure in self.measure[:]:
attributes = xml_measure.attributes[:]
measure = Measure(attributes=attributes, elements=[])
for elt in xml_measure.content():
measure.elements.append(elt)
result.append(measure)
return result
def read_acceleration(self) -> Measure:
assert self._ready
time = datetime.datetime.now()
accel = mpu6050.get_accel_data(self.init)
x = accel['x'] - self.accel['x']
y = accel['y'] - self.accel['y']
z = accel['z'] - self.accel['z']
self.accel_mag = self.calculate_magnitude(x, y, z)
magnitude_measure = Measure(self.accel_mag, self.units, time)
return magnitude_measure
def test_empty_clear():
"""Test the empty property and clear method"""
name = "test"
capacity = 2
accumulator = Accumulator(name, capacity)
assert accumulator.empty
value = 1
units = "metres"
time = datetime.datetime.now()
measure = Measure(value, units, time)
accumulator.push(measure)
assert not accumulator.empty
accumulator.clear()
assert accumulator.empty
def parse_obd_info(self, message, response):
"""Parses byte array from bus stream into readable info according to lookup table"""
if(message == 'pidsupport'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
elif(message == 'monitor_status'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
elif (message == 'freeze_dtc'):
print("Froze DTC")
return
elif (message == 'fuel_system_status'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
elif (message == 'engine_load'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure((int(response[3]) * 100) / 255, "%", time)
return result
elif (message == 'coolant_temp'):
"""returns Celcius, A-40"""
time = datetime.datetime.now()
result = Measure(int(response[3]) - 40, "Celcius", time)
return result
elif (message == 'sterm_fuel1'):
"""returns %, (A-128) * 100/128"""
time = datetime.datetime.now()
result = Measure((int(response[3]) - 128) * (100 / 128), "%", time)
return result
elif (message == 'lterm_fuel1'):
"""returns %, (A-128) * 100/128"""
time = datetime.datetime.now()
result = Measure((int(response[3]) - 128) * (100 / 128), "%", time)
return result
elif (message == 'sterm_fuel2'):
"""returns %, (A-128) * 100/128"""
time = datetime.datetime.now()
result = Measure((int(response[3]) - 128) * (100 / 128), "%", time)
return result
elif (message == 'lterm_fuel2'):
"""returns %, (A-128) * 100/128"""
time = datetime.datetime.now()
result = Measure((int(response[3]) - 128) * (100 / 128), "%", time)
return result
elif (message == 'fuel_pressure'):
"""returns kPa, A"""
time = datetime.datetime.now()
result = Measure(int(response[3]), "kPa", time)
return result
elif (message == 'intake_manifold_pressure'):
"""returns kPa, A*3"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 3, "kPa", time)
return result
elif (message == 'rpm'):
"""returns rpm, ((A*256)+B)/4"""
time = datetime.datetime.now()
result = Measure((int(response[3]) * 256 + int(response[4])) / 4,
"rpm", time)
return result
elif (message == 'speed'):
"""returns km/h, A"""
time = datetime.datetime.now()
result = Measure(int(response[3]), "km/h", time)
return result
elif (message == 'timing_advance'):
"""returns degress relative to cylinder 1, A/2 - 64"""
time = datetime.datetime.now()
result = Measure(int(response[3]) / 2 - 64, "degree", time)
return result
elif (message == 'intake_air_temp'):
"""returns Celcius, A-40"""
time = datetime.datetime.now()
result = Measure(int(response[3]) - 40, "Celcius", time)
return result
elif (message == 'MAF_flow'):
"""returns g/s, ((256*A)+B) / 100"""
time = datetime.datetime.now()
result = Measure(
((256 * int(response[3])) + int(response[4])) / 100, "g/s",
time)
return result
elif (message == 'throttle_position'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'secondary_air_status'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxygen_present'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b1_s1'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b1_s2'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b1_s3'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b1_s4'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b2_s1'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b2_s3'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b2_s3'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxy_b2_s4'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'obd_standard_id'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'oxygen_sensor_present'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'aux_input_status'):
"""returns T/F, A&4"""
time = datetime.datetime.now()
result = Measure(int(response[3]) & 4, "T/F", time)
return result
elif (message == 'engine_run_time'):
"""returns seconds, (A*256)+B"""
time = datetime.datetime.now()
result = Measure((int(response[3]) * 256) + int(response[4]),
"seconds", time)
return result
elif (message == 'pids_support_21_40'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'distance_traveled_MIL'):
"""returns seconds, (A*256)+B"""
time = datetime.datetime.now()
result = Measure((int(response[3]) * 256) + int(response[4]),
"seconds", time)
return result
elif (message == 'fuel_rail_pressure'):
"""returns kPA, ((A*256)+B)*0.079"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) * 0.079, "kPa",
time)
return result
elif (message == 'fuel_rail_pressure_diesel'):
"""returns kPa, ((A*256)+B)*10"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) * 10, "kPa",
time)
return result
elif (message == 'VO2S1_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'VO2S2_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'VO2S3_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'VO2S4_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'VO2S5_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'VO2S6_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'VO2S7_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'VO2S8_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'ERG'):
"""returns %, 100*A/255"""
time = datetime.datetime.now()
result = Measure(100 * int(response[3]) / 255, "%", time)
return result
elif (message == 'ERG_error'):
"""returns %, A*0.78125 - 100"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 0.78125 - 100, "%", time)
return result
elif (message == 'evaporative_purge'):
"""returns %, 100*A/255"""
time = datetime.datetime.now()
result = Measure(100 * int(response[3]) / 255, "%", time)
return result
elif (message == 'fuel_level'):
"""returns %, 100*A/255"""
time = datetime.datetime.now()
result = Measure(100 * int(response[3]) / 255, "%", time)
return result
elif (message == 'warm_up_attemps_since_clear'):
"""returns N/A, A"""
time = datetime.datetime.now()
result = Measure(int(response[3]), "N/A", time)
return result
elif (message == 'distance_traveled_since_clear'):
"""returns km, (A*256)+B"""
time = datetime.datetime.now()
result = Measure((int(response[3]) * 256) + int(response[4]), "km",
time)
return result
elif (message == 'evap_vapour_pressure'):
"""returns kPa, (A*256)+B)/4 - 8,192"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[3], 16)) / 4 - 8192,
"kPa", time)
return result
elif (message == 'baromatic_pressure'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S1_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S2_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S3_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S4_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S5_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S6_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S7_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'CO2S8_WR_lambda'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'catalyst_temp_B1S1'):
"""returns Celcius, ((A*256)+B)/10 - 40"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) / 10 - 40,
"Celcius", time)
return result
elif (message == 'catalyst_temp_B2S1'):
"""returns Celsius, ((A*256)+B)/10 - 40"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) / 10 - 40,
"Celcius", time)
return result
elif (message == 'catalyst_temp_B1S2'):
"""returns Celsius, ((A*256)+B)/10 - 40"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) / 10 - 40,
"Celcius", time)
return result
elif (message == 'catalyst_temp_B2S2'):
"""returns Celsius, ((A*256)+B)/10 - 40"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) / 10 - 40,
"Celcius", time)
return result
elif (message == 'pids_support_41_60'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'monitor_status_drive_cycle'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'control_module_voltage'):
"""returns Voltage, ((A*256)+B)/1000"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) / 1000,
"Voltage", time)
return result
elif (message == 'absolute_load'):
"""returns %, ((A*256)+B)*100/255"""
time = datetime.datetime.now()
result = Measure(
((int(response[3]) * 256) + int(response[4])) * 100 / 255, "%",
time)
return result
elif (message == 'command_equivalence_ratio'):
"""returns N/A, ((A*256)+B)*0.0000305"""
time = datetime.datetime.now()
result = Measure(
(((int(response[3]) * 256) + int(response[4])) * 0.0000305) *
100 / 255, "N/A", time)
return result
elif (message == 'relative_throttle_position'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'ambient_air_temp'):
"""returns Celcius, A-40"""
time = datetime.datetime.now()
result = Measure(int(response[3]) - 40, "Celcius", time)
return result
elif (message == 'absolute_throttle_position_B'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'absolute_throttle_position_C'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'absolute_throttle_position_D'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'absolute_throttle_position_E'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'absolute_throttle_position_F'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'command_throttle_actuator'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'time_run_with_MIL'):
"""returns minutes, (A*256)+B"""
time = datetime.datetime.now()
result = Measure(((int(response[3]) * 256) + int(response[4])),
"Minutes", time)
return result
elif (message == 'time_since_MIL_clear'):
"""returns minutes, (A*256)+B"""
time = datetime.datetime.now()
result = Measure(((int(response[3]) * 256) + int(response[4])),
"Minutes", time)
return result
elif (message == 'fuel_type'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
return int(response[3])
elif (message == 'ethanol_fuel_percent'):
"""returns %, A*100/255"""
time = datetime.datetime.now()
result = Measure(int(response[3]) * 100 / 255, "%", time)
return result
elif (message == 'VIN'):
"""TODO: http://www.geekmyride.org/wiki/index.php/OBD-II_PIDs#Bitwise_encoded_PIDs"""
A = response[3]
B = response[4]
C = response[5]
D = response[6]
E = response[7]
return int(response[3])
return result
def __init__(self, latitude: numbers.Number, longitude: numbers.Number,
altitude: numbers.Number, time: numbers.Number):
self._latitude = Measure(latitude, 'degrees', time)
self._longitude = Measure(longitude, 'degrees', time)
self._altitude = Measure(altitude, 'metres', time)
def read_temperature(self) -> Measure:
"""This mock thermometer always returns 22 celsius"""
assert self._ready
time = datetime.datetime.now()
temperature = Measure(self.MOCK_VALUE, self.MOCK_UNITS, time)
return temperature
def read_acceleration(self) -> Measure:
"""This mock accelerometer """
assert self._ready
time = datetime.datetime.now()
magnitude_measure = Measure(self.MOCK_VALUE, self.MOCK_UNITS, time)
return magnitude_measure
def read_temperature(self) -> Measure:
assert self._ready
time = datetime.datetime.now()
self.temperature = mpu6050.get_temp(self.init)
temp = Measure(self.temperature, self.units, time)
return temp
