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/linux-6.15/Documentation/hwmon/
H A Dchipcap2.rst14 …Datasheet: https://www.amphenol-sensors.com/en/telaire/humidity/527-humidity-sensors/3095-chipcap-2
23 This driver implements support for the Amphenol ChipCap 2, a humidity and
25 relative humidity is expressed as a per cent mille. The measurement ranges
28 - Relative humidity: 0 to 100000 pcm (14-bit resolution)
34 Depending on the hardware configuration, up to two humidity alarms to control
56 humidity1_input: RO humidity input
65 humidity1_min: RW humidity low limit. Measurements under
69 humidity1_min_hyst: RW humidity low hystersis
70 humidity1_max_hyst: RW humidity high hystersis
71 humidity1_min_alarm: RO humidity low alarm indicator
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H A Dsht3x.rst35 series of humidity and temperature sensors. Temperature is measured in degrees
36 celsius, relative humidity is expressed as a percentage. In the sysfs interface,
61 with the configured update interval on the chip. When a temperature or humidity
64 When the temperature and humidity readings move back between the hysteresis
77 humidity1_input: humidity input
80 humidity1_max: humidity max value
81 humidity1_max_hyst: humidity hysteresis value for max limit
84 humidity1_min: humidity min value
85 humidity1_min_hyst: humidity hysteresis value for min limit
88 humidity1_alarm: alarm flag is set to 1 if the humidity is outside the
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H A Dsht15.rst35 http://www.sensirion.ch/en/pdf/product_information/Datasheet-humidity-sensor-SHT1x.pdf
40 The SHT10, SHT11, SHT15, SHT71, and SHT75 are humidity and temperature
46 bits for humidity, or 12 bits for temperature and 8 bits for humidity.
48 The humidity calibration coefficients are programmed into an OTP memory on the
69 flag to indicate the temp/humidity resolution to use (default to false).
76 humidity1_input humidity input
H A Dsht21.rst37 The SHT21 and SHT25 are humidity and temperature sensors in a DFN package of
39 devices is the higher level of precision of the SHT25 (1.8% relative humidity,
40 0.2 degree Celsius) compared with the SHT21 (2.0% relative humidity,
54 - humidity input
61 The driver uses the default resolution settings of 12 bit for humidity and 14
63 humidity and 66 ms for temperature. To keep self heating below 0.1 degree
H A Dhs3001.rst23 This driver implements support for the Renesas HS3001 chips, a humidity
25 humidity is expressed as a percentage. In the sysfs interface, all values are
36 humidity1_input: humidity input
H A Dsht4x.rst24 This driver implements support for the Sensirion SHT4x chip, a humidity
26 humidity is expressed as a percentage. In sysfs interface, all values are
41 humidity1_input Measured humidity in %H
H A Dshtc1.rst44 chips, a humidity and temperature sensor. Temperature is measured in degrees
45 celsius, relative humidity is expressed as a percentage.
67 - humidity input
H A Dhtu31.rst23 HTU31 is a humidity and temperature sensor.
35 humidity1_input: humidity input
H A Dhih6130.rst22 The HIH-6130 & HIH-6131 are humidity and temperature sensors in a SO8 package.
40 humidity input
/linux-6.15/drivers/iio/humidity/
H A DKconfig3 # humidity sensor drivers
14 relative humidity and ambient temperature sensor.
29 tristate "ENS210 temperature and humidity sensor"
34 humidity and temperature sensors.
47 humidity and temperature sensors.
75 tristate "HID Environmental humidity sensor"
82 humidity driver
85 will be called hid-sensor-humidity.
96 temperature-humidity sensor
117 HTU21 humidity and temperature sensor.
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H A Ddht11.c83 int humidity; member
155 dht11->humidity = ((hum_int << 8) + hum_dec) * 100; in dht11_decode()
158 dht11->humidity = hum_int * 1000; in dht11_decode()
266 *val = dht11->humidity; in dht11_read_raw()
/linux-6.15/Documentation/devicetree/bindings/hwmon/
H A Damphenol,chipcap2.yaml7 title: ChipCap 2 humidity and temperature iio sensor
13 Relative humidity and temperature sensor on I2C bus.
16 https://www.amphenol-sensors.com/en/telaire/humidity/527-humidity-sensors/3095-chipcap-2
39 - description: low humidity alarm
40 - description: high humidity alarm
67 humidity@28 {
/linux-6.15/Documentation/devicetree/bindings/iio/humidity/
H A Dti,hdc2010.yaml4 $id: http://devicetree.org/schemas/iio/humidity/ti,hdc2010.yaml#
7 title: HDC2010/HDC2080 humidity and temperature iio sensors
13 Relative humidity and temperature sensors on I2C bus
45 humidity@40 {
H A Dti,hdc3020.yaml4 $id: http://devicetree.org/schemas/iio/humidity/ti,hdc3020.yaml#
7 title: HDC3020/HDC3021/HDC3022 humidity and temperature iio sensors
16 The HDC302x is an integrated capacitive based relative humidity (RH)
55 humidity-sensor@47 {
H A Ddht11.yaml4 $id: http://devicetree.org/schemas/iio/humidity/dht11.yaml#
7 title: DHT11 humidity + temperature sensor
37 humidity-sensor {
H A Dsciosense,ens210.yaml4 $id: http://devicetree.org/schemas/iio/humidity/sciosense,ens210.yaml#
7 title: ScioSense ENS210 temperature and humidity sensor
H A Dst,hts221.yaml4 $id: http://devicetree.org/schemas/iio/humidity/st,hts221.yaml#
7 title: HTS221 STM humidity + temperature sensor
/linux-6.15/drivers/hwmon/
H A Dsht3x.c183 u32 humidity; member
282 data->humidity = sht3x_extract_humidity(val); in sht3x_update_client()
311 return data->humidity; in humidity1_input_read()
322 u32 humidity; in limits_update() local
339 humidity = sht3x_extract_humidity(raw & 0xfe00); in limits_update()
341 data->humidity_limits[index] = humidity; in limits_update()
367 u32 humidity) in limit_write() argument
388 raw |= ((humidity * 42950) >> 16) & 0xfe00; in limit_write()
405 data->humidity_limits[index] = humidity; in limit_write()
428 u32 humidity; in humidity1_limit_write() local
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H A Dhs3001.c48 u32 humidity; /* in milli % */ member
93 data->humidity = in hs3001_data_fetch_command()
147 *val = data->humidity; in hs3001_read()
162 HWMON_CHANNEL_INFO(humidity, HWMON_H_INPUT),
H A Dhih6130.c41 int humidity; member
138 hih6130->humidity = hih6130_rh_ticks_to_per_cent_mille(t); in hih6130_update_measurements()
192 return sprintf(buf, "%d\n", hih6130->humidity); in hih6130_humidity_show()
H A Daht10.c92 int humidity; member
210 data->humidity = hum; in aht10_read_values()
266 *val = data->humidity; in aht10_humidity1_read()
317 HWMON_CHANNEL_INFO(humidity, HWMON_H_INPUT),
H A Dhtu31.c55 long humidity; member
126 data->humidity = htu31_relative_humidity(be16_to_cpup((__be16 *)&t_h_buf[3])); in htu31_data_fetch_command()
164 *val = data->humidity; in htu31_read()
269 HWMON_CHANNEL_INFO(humidity, HWMON_H_INPUT),
H A Dsht21.c43 int humidity; member
106 sht21->humidity = sht21_rh_ticks_to_per_cent_mille(ret); in sht21_update_measurements()
156 return sprintf(buf, "%d\n", sht21->humidity); in sht21_humidity_show()
/linux-6.15/Documentation/ABI/testing/
H A Dsysfs-bus-iio-chemical-sgp4015 Set the relative humidity. This value is sent to the sensor for
16 humidity compensation.
17 Default value: 50000 (50 % relative humidity)
/linux-6.15/Documentation/devicetree/bindings/
H A Dtrivial-devices.yaml110 # Honeywell Humidicon HIH-6130 humidity/temperature sensor
198 # Measurement Specialities I2C temperature and humidity sensor
200 # Measurement Specialities I2C temperature and humidity sensor
210 # Measurement Specialities temp and humidity part of ms8607 device
211 - meas,ms8607-humidity
338 # Sensirion temperature & humidity sensor with I2C interface
362 # Temperature and humidity sensor with i2c interface
364 # Temperature and humidity sensor with i2c interface
366 # Temperature and humidity sensor with i2c interface
368 # Temperature and humidity sensor with i2c interface
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