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Since the sensor supports different sampling intervals via bits CR0 and CR1 from the CONFIG register, add support in order for the conversion rate to be changed from user space. Default is 4 conv/sec. Signed-off-by: Flaviu Nistor <flaviu.nistor@gmail.com> Link: https://lore.kernel.org/r/20260403140654.10368-1-flaviu.nistor@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
66 lines
2.1 KiB
ReStructuredText
66 lines
2.1 KiB
ReStructuredText
Kernel driver tmp102
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====================
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Supported chips:
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* Texas Instruments TMP102
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Prefix: 'tmp102'
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Addresses scanned: none
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Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp102.html
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* Texas Instruments TMP110
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Prefix: 'tmp110'
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Addresses scanned: none
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Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp110.html
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* Texas Instruments TMP113
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Prefix: 'tmp113'
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Addresses scanned: none
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Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp113.html
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Author:
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Steven King <sfking@fdwdc.com>
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Description
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-----------
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The Texas Instruments TMP102 implements one temperature sensor. Limits can be
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set through the Overtemperature Shutdown register and Hysteresis register. The
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sensor is accurate to 0.5 degree over the range of -25 to +85 C, and to 1.0
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degree from -40 to +125 C. Resolution of the sensor is 0.0625 degree. The
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operating temperature has a minimum of -55 C and a maximum of +150 C.
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The TMP102 has a programmable update rate that can select between 8, 4, 1, and
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0.25 Hz.
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The TMP110 and TMP113 are software compatible with TMP102, but have different
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accuracy (maximum error) specifications. The TMP110 has an accuracy (maximum error)
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of 1.0 degree, TMP113 has an accuracy (maximum error) of 0.3 degree, while TMP102
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has an accuracy (maximum error) of 2.0 degree.
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sysfs-Interface
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---------------
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The following list includes the sysfs attributes that the driver provides, their
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permissions and a short description:
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=============================== ======= ===========================================
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Name Perm Description
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=============================== ======= ===========================================
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temp1_input: RO Temperature input
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temp1_label: RO Descriptive name for the sensor
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temp1_max: RW Maximum temperature
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temp1_max_hyst: RW Maximum hysteresis temperature
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update_interval RW Update conversions interval in milliseconds
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=============================== ======= ===========================================
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