projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bf1d290 CM |
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 | ||
| 7 | Reading: returns the current air pressure. | |
| 8 | ||
| 9 | ||
| 10 | What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input | |
| 11 | Date: June 2010 | |
| 12 | Contact: Christoph Mair <christoph.mair@gmail.com> | |
| 13 | Description: Measure the ambient temperature. The returned value represents | |
| 14 | the ambient temperature in units of 0.1 degree celsius. | |
| 15 | ||
| 16 | Reading: returns the current temperature. | |
| 17 | ||
| 18 | ||
| 19 | What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling | |
| 20 | Date: June 2010 | |
| 21 | Contact: Christoph Mair <christoph.mair@gmail.com> | |
| 22 | Description: Tell the bmp085 to use more samples to calculate a pressure | |
| 23 | value. When writing to this file the chip will use 2^x samples | |
| 24 | to calculate the next pressure value with x being the value | |
| 25 | written. Using this feature will decrease RMS noise and | |
| 26 | increase the measurement time. | |
| 27 | ||
| 28 | Reading: returns the current oversampling setting. | |
| 29 | ||
| 30 | Writing: sets a new oversampling setting. | |
| 31 | Accepted values: 0..3. |