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author | Takashi Iwai <tiwai@suse.de> | 2010-08-18 15:17:30 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2010-08-18 15:17:30 +0200 |
commit | 6ab561c8aab2e4af535f09adbc6253f958536848 (patch) | |
tree | 37846adb4ea106485720d113e252d71d615c23ed /Documentation/ABI/testing/sysfs-i2c-bmp085 | |
parent | 4f4e8f69895c8696a4bcc751817d4b186023ac44 (diff) | |
parent | cbaa9f60d5d5c3af10f94e0d49789d5b82341a4a (diff) | |
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Merge branch 'topic/isa' into topic/misc
Diffstat (limited to 'Documentation/ABI/testing/sysfs-i2c-bmp085')
-rw-r--r-- | Documentation/ABI/testing/sysfs-i2c-bmp085 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-i2c-bmp085 b/Documentation/ABI/testing/sysfs-i2c-bmp085 new file mode 100644 index 000000000000..585962ad0465 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-i2c-bmp085 @@ -0,0 +1,31 @@ +What: /sys/bus/i2c/devices/<busnum>-<devaddr>/pressure0_input +Date: June 2010 +Contact: Christoph Mair <christoph.mair@gmail.com> +Description: Start a pressure measurement and read the result. Values + represent the ambient air pressure in pascal (0.01 millibar). + + Reading: returns the current air pressure. + + +What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input +Date: June 2010 +Contact: Christoph Mair <christoph.mair@gmail.com> +Description: Measure the ambient temperature. The returned value represents + the ambient temperature in units of 0.1 degree celsius. + + Reading: returns the current temperature. + + +What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling +Date: June 2010 +Contact: Christoph Mair <christoph.mair@gmail.com> +Description: Tell the bmp085 to use more samples to calculate a pressure + value. When writing to this file the chip will use 2^x samples + to calculate the next pressure value with x being the value + written. Using this feature will decrease RMS noise and + increase the measurement time. + + Reading: returns the current oversampling setting. + + Writing: sets a new oversampling setting. + Accepted values: 0..3. |