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st,stts22h (on i2c bus)

Vendor: STMicroelectronics

Description

STMicroelectronics STTS22H temperature sensor connected to I2C bus
When setting the sampling-rate property in a .dts or .dtsi file you
may include stts22h.h and use the macros defined there.

Example:
#include <zephyr/dt-bindings/sensor/stts22h.h>

stts22h: stts22h@0 {
  ...

  sampling-rate = <STTS22H_100Hz>;
};

Properties

Properties not inherited from the base binding file.

Name

Type

Details

int-gpios

phandle-array

interrupt pin
This pin defaults to active high when produced by the sensor. The property value should ensure the flags properly describe the signal that is presented to the driver.

temperature-hi-threshold

int

HIGH temperature threshold above which an alarm is triggered.
Valid range is 0 to 255. It defaults to 0 (alarm off) which is
the configuration at power-up. This threshold must be calculated
from a temperature T in Celsius using the formula
temperature-hi-threshold = 63 + T/0.64 C.

temperature-lo-threshold

int

LOW temperature threshold below which an alarm is triggered.
Valid range is 0 to 255. It defaults to 0 (alarm off) which is
the configuration at power-up. This threshold must be calculated
from a temperature T in Celsius using the formula
temperature-lo-threshold = 63 + T/0.64 C.

sampling-rate

int

Specify the default output data rate expressed in samples per second (Hz).
The values are taken in accordance to stts22h_odr_temp_t enumerative in hal/st
module. Default 0x0 (power down) matches the power-up configuration.

- 0x00 # STTS22H_POWER_DOWN
- 0x01 # STTS22H_ONE_SHOT
- 0x04 # STTS22H_1Hz
- 0x02 # STTS22H_25Hz
- 0x12 # STTS22H_50Hz
- 0x22 # STTS22H_100Hz
- 0x32 # STTS22H_200Hz

Legal values: 0, 1, 2, 4, 18, 34, 50

friendly-name

string

Human readable string describing the sensor. It can be used to
distinguish multiple instances of the same model (e.g., lid accelerometer
vs. base accelerometer in a laptop) to a host operating system.

This property is defined in the Generic Sensor Property Usages of the HID
Usage Tables specification
(https://usb.org/sites/default/files/hut1_3_0.pdf, section 22.5).

supply-gpios

phandle-array

GPIO specifier that controls power to the device.

This property should be provided when the device has a dedicated
switch that controls power to the device.  The supply state is
entirely the responsibility of the device driver.

Contrast with vin-supply.

vin-supply

phandle

Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.

This property should be provided when device power is supplied
by a shared regulator.  The supply state is dependent on the
request status of all devices fed by the regulator.

Contrast with supply-gpios.  If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.