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Frodo Looijaard
2c4f8804a5
parameters of a module. git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@389 7894878c-1315-0410-8ee3-d5d059ff63e0
46 lines
1.6 KiB
Plaintext
46 lines
1.6 KiB
Plaintext
Kernel driver `lm75.o'
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=====================
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Status: Complete and well-tested
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Supported chips:
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* National Semiconductors LM75
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Prefix: `lm75'
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Addresses scanned: I2C 0x48 - 0x4f (inclusive)
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Datasheet: Publicly available at the National Semiconductors website
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Description
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-----------
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The LM75 implements one temperature sensor. Limits can be set through the
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Overtemperature Shutdown register and Hysteris register. Each value can be
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set and read to half-degree accuracy.
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An alarm is issued (usually to a connected LM78) when the temperature
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gets higher then the Overtemperature Shutdown value; it stays on until
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the temperature falls below the Hysteris value.
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All temperatures are in degrees Celcius, and are guaranteed within a
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range of -55 to +125 degrees.
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The LM75 only updates its values each 1.5 seconds; reading it more often
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will do no harm, but will return 'old' values.
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The LM75 is usually used in combination with LM78-like chips, to measure
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the temperature of the processor(s).
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Configuration file features
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---------------------------
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LABEL LABEL CLASS COMPUTE CLASS ACCESS MAGNITUDE
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temp NONE NONE R 1
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temp_hyst temp temp RW 1
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temp_over temp temp RW 1
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LABEL FEATURE SYMBOL SYSCTL FILE:OFFSET
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temp SENSORS_LM75_TEMP temp:3
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temp_hyst SENSORS_LM75_TEMP_HYST temp:2
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temp_over SENSORS_LM75_TEMP_OVER temp:1
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