works on my piA+ but pressure values are a bit off. Checked the self.cal_p8 value in the datasheet which shows -14600 rather than the -14500 value in the code.

Hey,

i got a problem while using this library.
I receive pressure values which are way too low...I mean I expect round about 1013 hPa, and I get 96466 Pa, which is equal to 964 hPa, so where are the missing 50 hPa?

Do I have to adjust the sensor?
I am using this one: http://www.amazon.de/Adafruit-Luftdruck--Temperatur--H%C3%B6hensensor-BMP180/dp/B00KLBTR4I/ref=sr_1_1?ie=UTF8&qid=1433182269&sr=8-1&keywords=adafruit+bmp

Thanks.

• Raspberry Pi with Raspbian operating system, updated today (apt-get update, apt-get dIst-upgrade) with latest kernel (sudo rpi-update).

• Python version 2.7.

• Error message you are receiving:
  Traceback (most recent call last):
  File "simpletest.py", line 37, in
  sensor = BMP085.BMP085()
  File "build/bdist.linux-armv6l/egg/Adafruit_BMP/BMP085.py", line 67, in init
  File "build/bdist.linux-armv6l/egg/Adafruit_GPIO/I2C.py", line 63, in get_i2c_device
  File "build/bdist.linux-armv6l/egg/Adafruit_GPIO/I2C.py", line 55, in get_default_bus
  RuntimeError: Could not determine default I2C bus for platform.

• My python program was working prior to updating my Raspberry Pi B. After updating received the above error. The above error was received using the simpletest.py example. Also received with my python script. i2cdetect displays the address of the BMP085.

pi@raspberrypiLights:~/Adafruit_Python_BMP/examples $ i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- 77

Fixed myself. Installed Adafruit Python GPIO Library.

Hi: I got this to work once, but now fails weirdly due to the setup.py file and the non-standard (and somewhat hacky) Raspbian python environment. I'm still trying to replicate the "working" part using your sensor module, and the reason I had to install it again is because the other Python sensor code (which also worked fine) stopped working after I installed your Python modules for the BMP sensor. The sensor board I'm working with has three sensors integrated (SHT10, BMP085, and MPU6050) but the required Python modules break each other when the upstream "install" is run. Proper packaging as *.debs would avoid all of this pip/easy_install nonsense, which turns out to be anything but easy. I'm through debugging this stuff for now and I will make some proper git/versioned ebuilds for what I need (conference deadlines are approaching fast) and put them in our arm testing overlay (I do Gentoo and Yocto, which is plenty enough already). Please consider packaging an actual release of your modules and either package the dependencies or push it up to Raspbian and get them to do it. It's currently not possible for an OS/distribution developer to install multiple sensor modules in the latest 09-09 Raspbian using the available tools/docs (such as they are) so I really don't see how a "normal" user could do it.

Hello,

when I run the simpletest.py, I get the following error

What am I doing wrong?
Thanks for your answer
greeting
Tobi

When testing the munin plugin:
python munin/i2c_pressure

I get the error:

File "munin/i2c_pressure", line 4, in
from Adafruit_BMP085 import BMP085
ImportError: No module named Adafruit_BMP085

Is there a quick fix for this? I would really like to intergrate this to munin.

@tdicola Do you know of any plans to add support for Adafruit BMP280 Barometric Pressure + Temperature Sensor Breakout?

This user is looking to use the BMP280 with the Raspberry Pi:
BMP280 SPI CONNECTIONS RASPBERRY

Could you kindly release this library to PyPI so users can easily install it via pip install command?

Error received while running examples/google_spreadsheet.py:

Logging sensor measurements to temp_log every 30 seconds.
Press Ctrl-C to quit.
/usr/local/lib/python2.7/dist-packages/gspread/client.py:73: Warning:
            ClientLogin is deprecated:
            https://developers.google.com/identity/protocols/AuthForInstalledApps?csw=1

            Authorization with email and password will stop working on April 20, 2015.

            Please use oAuth2 authorization instead:
            http://gspread.readthedocs.org/en/latest/oauth2.html


  """, Warning)
Unable to login and get spreadsheet.  Check email, password, spreadsheet name.

Using the simpletest.py I get constant errors

python simpletest.py 
Traceback (most recent call last):
  File "simpletest.py", line 37, in <module>
    sensor = BMP085.BMP085()
  File "/usr/lib/python2.7/site-packages/Adafruit_BMP/BMP085.py", line 68, in __init__
    self._load_calibration()
  File "/usr/lib/python2.7/site-packages/Adafruit_BMP/BMP085.py", line 72, in _load_calibration
    self.cal_AC2 = self._device.readS16BE(BMP085_CAL_AC2)   # INT16
  File "/usr/lib/python2.7/site-packages/Adafruit_GPIO/I2C.py", line 195, in readS16BE
    return self.readS16(register, little_endian=False)
  File "/usr/lib/python2.7/site-packages/Adafruit_GPIO/I2C.py", line 172, in readS16
    result = self.readU16(register, little_endian)
  File "/usr/lib/python2.7/site-packages/Adafruit_GPIO/I2C.py", line 159, in readU16
    result = self._bus.read_word_data(self._address,register) & 0xFFFF
IOError: [Errno 110] Connection timed out

I'm not sure what is causing this. I have one other sensor on the i2c bus.

i2cdetect -y 0
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- 77  

The only way I can get it to show me anything is if I do something like

value = None
while value is None:
  try:
    value = BMP085.BMP085().read_pressure()
    print 'Pressure = {0:0.2f} Pa'.format(value)
  except:
    pass

Even then I seem to get wild values

Pressure = 1092309.00 Pa

So I'm not sure if my sensor is buggered, or if the voltage is dropping too much on the 3.3v line to run both sensors (the other sensor is an si1145). The si1145 seems to have the same error and needs a similar solution when I use it.

So it's either the voltage, or something related to daisy chaining the two sensors on the same i2c bus

EDIT:
Just did some more testing, ran the simpletest.py in a loop and monitored the voltage, it was a constant 3.34v, so that's fine.
I also tried each sensor on it's own, and it still had the timeout issue. So now I think it must be related to my RPi or my kernel config.

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I tried using this library in both Python 2 and 3 with a BMP180 sensor from Adafruit. It works great with version 2.7.x, but I'm having 'unsupported operand type(s)' errors when trying to use this library with Python 3.4:

Please note that the sensor seems to be recognized, as shows the following screenshot:

I'm working with a Raspberry Pi model B if that helps.

please someone delete this issue. sorry.

Hello,
using a Banana PI with Debian 8.6.

git clone https://github.com/adafruit/Adafruit_Python_BMP
cd Adafruit_Python_BMP
sudo python3 setup.py install

compilation terminated.
error: Setup script exited with error: command 'arm-linux-gnueabihf-gcc' failed with exit status 1

build.txt

arm-linux-gnueabihf-gcc (Debian 4.9.2-10) 4.9.2

How to fix this ?