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Add altitude property #9

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Merged
merged 2 commits into from
Aug 28, 2020
Merged

Add altitude property #9

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aeefb83
add altitude property
caternuson Aug 27, 2020
a2ec35b
ahh...pylint, my old friend
caternuson Aug 27, 2020
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9 changes: 9 additions & 0 deletions adafruit_dps310.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@
__repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_DPS310.git"

# Common imports; remove if unused or pylint will complain
import math
from time import sleep
import adafruit_bus_device.i2c_device as i2c_device
from adafruit_register.i2c_struct import UnaryStruct, ROUnaryStruct
Expand Down Expand Up @@ -234,6 +235,8 @@ def __init__(self, i2c_bus, address=_DPS310_DEFAULT_ADDRESS):
1040384,
2088960,
)
self.sea_level_pressure = 1013.25
"""Pressure in hectoPascals at sea level. Used to calibrate `altitude`."""
self.initialize()

def initialize(self):
Expand Down Expand Up @@ -301,6 +304,12 @@ def pressure(self):
final_pressure = pres_calc / 100
return final_pressure

@property
def altitude(self):
"""The altitude based on the sea level pressure (`sea_level_pressure`) - which you must
enter ahead of time)"""
return 44330 * (1.0 - math.pow(self.pressure / self.sea_level_pressure, 0.1903))

@property
def temperature(self):
"""The current temperature reading in degrees C"""
Expand Down