1.. SPDX-License-Identifier: GPL-2.0 2 3Kernel driver sht4x 4=================== 5 6Supported Chips: 7 8 * Sensirion SHT4X 9 10 Prefix: 'sht4x' 11 12 Addresses scanned: None 13 14 Datasheet: 15 16 English: https://www.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Datasheets/Sensirion_Humidity_Sensors_SHT4x_Datasheet.pdf 17 18Author: Navin Sankar Velliangiri <navin@linumiz.com> 19 20 21Description 22----------- 23 24This driver implements support for the Sensirion SHT4x chip, a humidity 25and temperature sensor. Temperature is measured in degree celsius, relative 26humidity is expressed as a percentage. In sysfs interface, all values are 27scaled by 1000, i.e. the value for 31.5 degrees celsius is 31500. 28 29Usage Notes 30----------- 31 32The device communicates with the I2C protocol. Sensors can have the I2C 33address 0x44. See Documentation/i2c/instantiating-devices.rst for methods 34to instantiate the device. 35 36Sysfs entries 37------------- 38 39=============== ============================================ 40temp1_input Measured temperature in millidegrees Celcius 41humidity1_input Measured humidity in %H 42update_interval The minimum interval for polling the sensor, 43 in milliseconds. Writable. Must be at least 44 2000. 45=============== ============================================ 46