| Navin Sankar Velliangiri | 505c254 | 2021-05-24 19:50:38 +0530 | [diff] [blame] | 1 | .. SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | Kernel driver sht4x |
| 4 | =================== |
| 5 | |
| 6 | Supported 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 | |
| 18 | Author: Navin Sankar Velliangiri <navin@linumiz.com> |
| 19 | |
| 20 | |
| 21 | Description |
| 22 | ----------- |
| 23 | |
| 24 | This driver implements support for the Sensirion SHT4x chip, a humidity |
| 25 | and temperature sensor. Temperature is measured in degree celsius, relative |
| 26 | humidity is expressed as a percentage. In sysfs interface, all values are |
| 27 | scaled by 1000, i.e. the value for 31.5 degrees celsius is 31500. |
| 28 | |
| 29 | Usage Notes |
| 30 | ----------- |
| 31 | |
| 32 | The device communicates with the I2C protocol. Sensors can have the I2C |
| 33 | address 0x44. See Documentation/i2c/instantiating-devices.rst for methods |
| 34 | to instantiate the device. |
| 35 | |
| 36 | Sysfs entries |
| 37 | ------------- |
| 38 | |
| 39 | =============== ============================================ |
| 40 | temp1_input Measured temperature in millidegrees Celcius |
| 41 | humidity1_input Measured humidity in %H |
| 42 | update_interval The minimum interval for polling the sensor, |
| 43 | in milliseconds. Writable. Must be at least |
| 44 | 2000. |
| Randy Dunlap | 276281b | 2021-07-27 16:20:54 -0700 | [diff] [blame] | 45 | =============== ============================================ |