Error in interfacing BME280 with Beaglebone black wireless

[rohan dhameliya]

File "Adafruit_BME280_Example.py", line 3, in <module>

    sensor = BME280(t_mode=BME280_OSAMPLE_8, p_mode=BME280_OSAMPLE_8, h_mode=BME280_OSAMPLE_8)

  File "/var/lib/cloud9/Adafruit_Python_BME280/Adafruit_BME280.py", line 136, in __init__

    self._load_calibration()

  File "/var/lib/cloud9/Adafruit_Python_BME280/Adafruit_BME280.py", line 147, in _load_calibration

    self.dig_T1 = self._device.readU16LE(BME280_REGISTER_DIG_T1)

  File "/usr/local/lib/python2.7/dist-packages/Adafruit_GPIO-1.0.3-py2.7.egg/Adafruit_GPIO/I2C.py", line 187, in readU16LE

    return self.readU16(register, little_endian=True)

  File "/usr/local/lib/python2.7/dist-packages/Adafruit_GPIO-1.0.3-py2.7.egg/Adafruit_GPIO/I2C.py", line 166, in readU16

    result = self._bus.read_word_data(self._address,register) & 0xFFFF

  File "/usr/local/lib/python2.7/dist-packages/Adafruit_PureIO-0.2.3-py2.7.egg/Adafruit_PureIO/smbus.py", line 187, in read_word_data

    ioctl(self._device.fileno(), I2C_RDWR, request)

IOError: [Errno 16] Device or resource busy

i getting this error try to find option but not working please help me..

[MG]

I just used BME280 with BB black with a c written example based on their drivers: https://github.com/BoschSensortec/BME280_driver

and it worked no issue. Can u confirm which I2C line you are connected to? run i2cdetect -l to get enabled i2c lines and i2cdetect -y -r <i2c_number> to get of list of device addresses. I think mine was on 0x76 i2c-2. check for yours and make sure it is not showing as "U" which would explain why you are getting resources busy (either that or your device is not connected properly)

[rohan dhameliya]

debian@beaglebone:/var/lib/cloud9$ i2cdetect -y -r 2

     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

00:          -- -- -- -- -- -- -- -- -- -- -- -- --

10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

50: -- -- -- -- UU UU UU UU -- -- -- -- -- -- -- --

60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

70: -- -- -- -- -- -- -- 77

i got this result what does it mean?

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[MG]

It means that if ur sensor is connected to i2c-2 then your address is prob 0x77. Are you sure you are using correct address?

[rohan dhameliya]

so now how to use that C code which you provided in link.

sorry for trouble but i am very new to this things that's why don't know how to run.

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[MG]

Clone the following into your BB and change the values in there accordingly (which i2c line, which device address...) and compile it and run it from user space:

https://github.com/BoschSensortec/BME280_driver/blob/master/examples/linux_userspace.c