def test_return_freezing_given_actual_data(self):
calibrator = Calibrator(self._hardware_calibration_coefficients,
253952, 524288)
self.assertAlmostEqual(calibrator.temperature(209505),
0,
places=-1,
msg="Fails to return 0degC given data that "
"matches that.")
def test_returns_3_atm_pressure_given_actual_data(self):
calibrator = Calibrator(self._hardware_calibration_coefficients,
253952, 524288)
self.assertAlmostEqual(calibrator.pressure(-3274260, 209505),
303000,
places=-1,
msg="Fails to return 3 atm pressure given "
"data that matches that.")
def test_return_standard_temperature_given_actual_data(self):
calibrator = Calibrator(self._hardware_calibration_coefficients,
253952, 524288)
self.assertAlmostEqual(calibrator.temperature(167393),
20,
places=-1,
msg="Fails to return 20degC given data that "
"matches that.")
def test_returns_2_atm_pressure_given_actual_data(self):
calibrator = Calibrator(self._hardware_calibration_coefficients,
253952, 524288)
self.assertAlmostEqual(calibrator.pressure(-3132150, 167393),
202000,
places=-1,
msg="Fails to return 2 atm pressure given "
"data that matches that.")
def test_one_coefficients_and_data(self):
calibrator = Calibrator((1, 1, 1, 1, 1, 1, 1, 1, 1), 1, 1)
self.assertAlmostEqual(calibrator.pressure(1, 1),
7.0,
msg="Fails to return 7.0 pressure when "
"all coefficients and data equal 1.0.")
self.assertAlmostEqual(calibrator.temperature(1),
1.5,
msg="Fails to return 1.5 temperature "
"when all coefficients and data equal 1.0.")
def test_zero_coefficients_and_non_zero_data(self):
calibrator = Calibrator((0, 0, 0, 0, 0, 0, 0, 0, 0, 0), 1, 1)
self.assertAlmostEqual(calibrator.pressure(10, 10),
0.0,
msg="Fails to return 0 pressure when all "
"coefficients equal 0.")
self.assertAlmostEqual(calibrator.temperature(10),
0.0,
msg="Fails to return 0 temperature when "
"all coefficient equal 0.")
def test_returns_standard_pressure_given_actual_data(self):
calibrator = Calibrator(self._hardware_calibration_coefficients,
253952, 524288)
# Raw pressure and temperature found by solving the compensating
# equation for raw pressure and temperature given the hardware
# calibration coefficients.
# This is true for this and the following few tests.
self.assertAlmostEqual(calibrator.pressure(-2968390, 167393),
101000,
places=-1,
msg="Fails to return sea level pressure given "
"data that matches that.")
def test_one_coefficients_and_zero_data(self):
calibrator = Calibrator((1, 1, 1, 1, 1, 1, 1, 1, 1), 1, 1)
self.assertAlmostEqual(calibrator.pressure(0, 0),
1.0,
msg="Fails to return 1.0 pressure when "
"all coefficients equal 1.0 and data "
"equals 0.")
self.assertAlmostEqual(calibrator.temperature(0),
0.5,
msg="Fails to return 1.5 temperature "
"when all coefficients equal 1.0 and "
"data equals 0.")
def test_zero_scaling_factor_raises_exception(self):
with self.assertRaises(ZeroDivisionError,
msg="Fails to raise a ZeroDivisionError "
"when initialized with a scaling factor "
"equal to 0."):
calibrator = Calibrator((0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
0,
0)
import constants
if "__main__" == __name__:
print("--Initialization")
mux = I2CMux(constants.PRESSURE_SENSOR_MUX_ADDRESS)
mux.select_channel(0)
comms = Communicator(dump_communication=False)
print("--Set Op Mode")
comms.set_op_mode(PressureSensor.OpMode.command)
print("--Set Pressure Sampling")
comms.set_pressure_sampling()
print("--Set Temperature Sampling")
comms.set_temperature_sampling()
calibrator = Calibrator(comms.calibration_coefficients,
comms.pressure_scale_factor,
comms.temperature_scale_factor)
try:
while True:
print("--Get Pressure")
raw_pressure = comms.raw_pressure()
print("--Get Temperature")
raw_temperature = comms.raw_temperature()
pressure = calibrator.pressure(raw_pressure, raw_temperature)
temperature = calibrator.temperature(raw_temperature)
print(f"Time:\t\t{time.time()*1000}\n"
f"Pressure:\t{pressure}\n"
f"Temperature:\t{temperature}")
time.sleep(1.0)
finally:
