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. |