MPL3115A2 Module¶
This module contains the driver for NXP MPL3115A2 Pressure, Altitude and Temperature sensor.
The MPL3115A2 is capable of direct I2C communication; the pressure and temperature data is fed into a high resolution ADC to provide fully compensated and digitized outputs for pressure in Pascals and temperature in °C.
The compensated pressure output can then be converted to altitude (utilizing the formula stated in Section 8.1.3 “Pressure/altitude” of the datasheet or putting the sensor in altimeter operating mode) provided in meters.
class MPL3115A2¶
class MPL3115A2(i2cdrv, addr=0x60, clk=400000)
Creates an instance of a new MPL3115A2.
Arguments:
- i2cdrv – I2C Bus used ‘( I2C0, … )’
- addr – Slave address, default 0x60
- clk – Clock speed, default 400kHz
Example:
from nxp.mpl3115a2 import mpl3115a2
...
mpl = mpl3115a2.MPL3115A2(I2C0)
mpl.start()
mpl.init()
alt = mpl.get_alt()
pres = mpl.get_pres()
MPL3115A2.init¶
init(osr=0)
Initialize the MPL3115A2 setting the oversample rate value.
Arguments: osr – set the oversample rate value (from 0 to 7), default 0.
OSR Value | Oversample Ratio | Data Ready |
---|---|---|
0 | 1 | 6 ms |
1 | 2 | 10 ms |
2 | 4 | 18 ms |
3 | 8 | 34 ms |
4 | 16 | 66 ms |
5 | 32 | 130 ms |
6 | 64 | 258 ms |
7 | 128 | 512 ms |
MPL3115A2.get_raw_alt¶
get_raw_alt()
Retrieves the current altitude data from the sensor as raw value.
Returns raw_a.
get_raw_pres()
Retrieves the current pressure data from the sensor as raw value.
Returns raw_p.
MPL3115A2.get_raw_temp¶
get_raw_temp()
Retrieves the current temperature data from the sensor as raw value.
Returns raw_t.
MPL3115A2.get_alt¶
get_alt()
Calculates, from measured pressure, the current altitude data as value in meters.
Returns altitude.
MPL3115A2.get_pres¶
get_pres()
Retrieves the current pressure data from the sensor as calibrate value in Pa.
Returns pres.
MPL3115A2.get_temp¶
get_temp()
Retrieves the current temperature data from the sensor as calibrate value in °C.
Returns temp.