micropython-bmp180

Module bmp180

bmp180 is a micropython module for the Bosch BMP180 sensor. It measures temperature as well as pressure, with a high enough resolution to calculate altitude.
Breakoutboard: http://www.adafruit.com/products/1603
data-sheet: http://ae-bst.resource.bosch.com/media/products/dokumente/bmp180/BST-BMP180-DS000-09.pdf

If you have any questions, open an issue.

Wiring the sensor to the pyboard

pyboard	bmp180
VIN	VIN
3V3	3Vo
GND	GND
SCL	SCL
SDA	SDA

Quickstart

Example:

from bmp180 import *
from altimeter import altitude

bmp180 = BMP180()
bmp180.config(oversample=2)

bmp180.measure()

temp = bmp180.get_fixedp(TEMPERATURE)
p = bmp180.get_float(PRESSURE)
alt = altitude(p, 101325)

Classes

BMP180
Module for the BMP180 pressure sensor.

Methods

config(i2c, oversample)
Configure the sensor.

measure()
Initiates a blocking measurement.

get_fixedp(VALUE)
Returns VALUE as int.

get_float(VALUE)
Returns VALUE as float.

Instance variables

chip_id
ID of chip is hardcoded on the sensor.

oversample_sett
Sets the accuracy. Default: 0

0 lowest accuracy, fastest
1
2
3 highest accuracy, slowest

Modules

altimeter
Provides a function to calculate altitude from pressure.

Functions

altitude(pressure, baseline)
Input in Pa.
Altitude in m.
Baseline is the pressure at Main Sea Level. The default is 101325 Pa, but you can use your local QNH in Pa.
To get different altitudes, use this as baselines:

altitude	baseline
absolute	local pressure
true	QNH*100
pressure	101325 or None

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!