sysfs-i2c-bmp085 1.1 KB

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  1. What: /sys/bus/i2c/devices/<busnum>-<devaddr>/pressure0_input
  2. Date: June 2010
  3. Contact: Christoph Mair <christoph.mair@gmail.com>
  4. Description: Start a pressure measurement and read the result. Values
  5. represent the ambient air pressure in pascal (0.01 millibar).
  6. Reading: returns the current air pressure.
  7. What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input
  8. Date: June 2010
  9. Contact: Christoph Mair <christoph.mair@gmail.com>
  10. Description: Measure the ambient temperature. The returned value represents
  11. the ambient temperature in units of 0.1 degree celsius.
  12. Reading: returns the current temperature.
  13. What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling
  14. Date: June 2010
  15. Contact: Christoph Mair <christoph.mair@gmail.com>
  16. Description: Tell the bmp085 to use more samples to calculate a pressure
  17. value. When writing to this file the chip will use 2^x samples
  18. to calculate the next pressure value with x being the value
  19. written. Using this feature will decrease RMS noise and
  20. increase the measurement time.
  21. Reading: returns the current oversampling setting.
  22. Writing: sets a new oversampling setting.
  23. Accepted values: 0..3.