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1 | Kernel driver shtc1 | ||
2 | =================== | ||
3 | |||
4 | Supported chips: | ||
5 | * Sensirion SHTC1 | ||
6 | Prefix: 'shtc1' | ||
7 | Addresses scanned: none | ||
8 | Datasheet: http://www.sensirion.com/file/datasheet_shtc1 | ||
9 | |||
10 | * Sensirion SHTW1 | ||
11 | Prefix: 'shtw1' | ||
12 | Addresses scanned: none | ||
13 | Datasheet: Not publicly available | ||
14 | |||
15 | Author: | ||
16 | Johannes Winkelmann <johannes.winkelmann@sensirion.com> | ||
17 | |||
18 | Description | ||
19 | ----------- | ||
20 | |||
21 | This driver implements support for the Sensirion SHTC1 chip, a humidity and | ||
22 | temperature sensor. Temperature is measured in degrees celsius, relative | ||
23 | humidity is expressed as a percentage. Driver can be used as well for SHTW1 | ||
24 | chip, which has the same electrical interface. | ||
25 | |||
26 | The device communicates with the I2C protocol. All sensors are set to I2C | ||
27 | address 0x70. See Documentation/i2c/instantiating-devices for methods to | ||
28 | instantiate the device. | ||
29 | |||
30 | There are two options configurable by means of shtc1_platform_data: | ||
31 | 1. blocking (pull the I2C clock line down while performing the measurement) or | ||
32 | non-blocking mode. Blocking mode will guarantee the fastest result but | ||
33 | the I2C bus will be busy during that time. By default, non-blocking mode | ||
34 | is used. Make sure clock-stretching works properly on your device if you | ||
35 | want to use blocking mode. | ||
36 | 2. high or low accuracy. High accuracy is used by default and using it is | ||
37 | strongly recommended. | ||
38 | |||
39 | sysfs-Interface | ||
40 | --------------- | ||
41 | |||
42 | temp1_input - temperature input | ||
43 | humidity1_input - humidity input | ||