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Commit | Line | Data |
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1a539d37 TP |
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 |