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diff --git a/Documentation/hwmon/shtc1.rst b/Documentation/hwmon/shtc1.rst new file mode 100644 index 000000000000..aa116332ba26 --- /dev/null +++ b/Documentation/hwmon/shtc1.rst @@ -0,0 +1,58 @@ +Kernel driver shtc1 +=================== + +Supported chips: + + * Sensirion SHTC1 + + Prefix: 'shtc1' + + Addresses scanned: none + + Datasheet: http://www.sensirion.com/file/datasheet_shtc1 + + + + * Sensirion SHTW1 + + Prefix: 'shtw1' + + Addresses scanned: none + + Datasheet: Not publicly available + + + +Author: + + Johannes Winkelmann <johannes.winkelmann@sensirion.com> + +Description +----------- + +This driver implements support for the Sensirion SHTC1 chip, a humidity and +temperature sensor. Temperature is measured in degrees celsius, relative +humidity is expressed as a percentage. Driver can be used as well for SHTW1 +chip, which has the same electrical interface. + +The device communicates with the I2C protocol. All sensors are set to I2C +address 0x70. See Documentation/i2c/instantiating-devices for methods to +instantiate the device. + +There are two options configurable by means of shtc1_platform_data: + +1. blocking (pull the I2C clock line down while performing the measurement) or + non-blocking mode. Blocking mode will guarantee the fastest result but + the I2C bus will be busy during that time. By default, non-blocking mode + is used. Make sure clock-stretching works properly on your device if you + want to use blocking mode. +2. high or low accuracy. High accuracy is used by default and using it is + strongly recommended. + +sysfs-Interface +--------------- + +temp1_input + - temperature input +humidity1_input + - humidity input |