diff options
Diffstat (limited to 'Documentation/hwmon/sht3x')
| -rw-r--r-- | Documentation/hwmon/sht3x | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/Documentation/hwmon/sht3x b/Documentation/hwmon/sht3x index d9daa6ab1e8e..978a7117e4b2 100644 --- a/Documentation/hwmon/sht3x +++ b/Documentation/hwmon/sht3x @@ -2,14 +2,19 @@ Kernel driver sht3x =================== Supported chips: + * Sensirion SHT3x-DIS + Prefix: 'sht3x' + Addresses scanned: none + Datasheet: https://www.sensirion.com/file/datasheet_sht3x_digital Author: - David Frey <david.frey@sensirion.com> - Pascal Sachs <pascal.sachs@sensirion.com> + + - David Frey <david.frey@sensirion.com> + - Pascal Sachs <pascal.sachs@sensirion.com> Description ----------- @@ -24,6 +29,7 @@ addresses 0x44 or 0x45, depending on the wiring. See Documentation/i2c/instantiating-devices for methods to instantiate the device. There are two options configurable by means of sht3x_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 @@ -35,12 +41,15 @@ There are two options configurable by means of sht3x_platform_data: The sht3x sensor supports a single shot mode as well as 5 periodic measure modes, which can be controlled with the update_interval sysfs interface. The allowed update_interval in milliseconds are as follows: - * 0 single shot mode - * 2000 0.5 Hz periodic measurement - * 1000 1 Hz periodic measurement - * 500 2 Hz periodic measurement - * 250 4 Hz periodic measurement - * 100 10 Hz periodic measurement + + ===== ======= ==================== + 0 single shot mode + 2000 0.5 Hz periodic measurement + 1000 1 Hz periodic measurement + 500 2 Hz periodic measurement + 250 4 Hz periodic measurement + 100 10 Hz periodic measurement + ===== ======= ==================== In the periodic measure mode, the sensor automatically triggers a measurement with the configured update interval on the chip. When a temperature or humidity @@ -53,6 +62,7 @@ low. sysfs-Interface --------------- +=================== ============================================================ temp1_input: temperature input humidity1_input: humidity input temp1_max: temperature max value @@ -64,13 +74,15 @@ temp1_min_hyst: temperature hysteresis value for min limit humidity1_min: humidity min value humidity1_min_hyst: humidity hysteresis value for min limit temp1_alarm: alarm flag is set to 1 if the temperature is outside the - configured limits. Alarm only works in periodic measure mode + configured limits. Alarm only works in periodic measure mode humidity1_alarm: alarm flag is set to 1 if the humidity is outside the - configured limits. Alarm only works in periodic measure mode + configured limits. Alarm only works in periodic measure mode heater_enable: heater enable, heating element removes excess humidity from - sensor - 0: turned off - 1: turned on + sensor: + + - 0: turned off + - 1: turned on update_interval: update interval, 0 for single shot, interval in msec - for periodic measurement. If the interval is not supported - by the sensor, the next faster interval is chosen + for periodic measurement. If the interval is not supported + by the sensor, the next faster interval is chosen +=================== ============================================================ |