ti,tmag5273 (on i2c bus)

Vendor: Texas Instruments

Description

Texas Instruments TMAG5273 Low-Power Linear 3D Hall-Effect Sensor with an I2C interface.

See the specification for the default I2C address.

The specification of the sensor can be found at:
  https://www.ti.com/lit/ds/symlink/tmag5273.pdf

  When setting the enum properties in a .dts or .dtsi file you may
  include tmag5273.h and use the macros defined there.

  Example:
  #include <zephyr/dt-bindings/sensor/tmag5273.h>

  tmag5273: tmag5273@0 {
    ...
    axis = <TMAG5273_DT_AXIS_XYZ>;
    range = <TMAG5273_DT_AXIS_RANGE_HIGH>;
  };

Properties

Properties not inherited from the base binding file.

Name

Type

Details

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.

operation-mode

int

 
Sensor mode used if set to "active".
Defaults to continuous sampling (TMAG5273_DT_OPER_MODE_CONTINUOUS).

- 0 # TMAG5273_DT_OPER_MODE_CONTINUOUS (continuous)
- 1 # TMAG5273_DT_OPER_MODE_STANDBY    (standby)

Legal values: 0, 1

axis

int

 
Magnet axis channel inputs.
Defaults to measure all axis (TMAG5273_DT_AXIS_XYZ).

- 0  # TMAG5273_DT_AXIS_NONE
- 1  # TMAG5273_DT_AXIS_X
- 2  # TMAG5273_DT_AXIS_Y
- 3  # TMAG5273_DT_AXIS_Z
- 4  # TMAG5273_DT_AXIS_XY
- 5  # TMAG5273_DT_AXIS_XZ
- 6  # TMAG5273_DT_AXIS_YZ
- 7  # TMAG5273_DT_AXIS_XYZ
- 8  # TMAG5273_DT_AXIS_XYX (pseudo-simultaneous sampling)
- 9  # TMAG5273_DT_AXIS_YXY (pseudo-simultaneous sampling)
- 10 # TMAG5273_DT_AXIS_YZY (pseudo-simultaneous sampling)
- 11 # TMAG5273_DT_AXIS_XZX (pseudo-simultaneous sampling)

Default value: 7

Legal values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

temperature

boolean

 
Select for temperature measurement.

range

int

 
XYZ-measurement range for magnetic-field value.
Defaults to lower range (higher resolution; TMAG5273_DT_AXIS_RANGE_LOW).

- 0 # TMAG5273_DT_AXIS_RANGE_LOW      (+/-40 mT (TMAG5273A1) or +/-133 mT (TMAG5273A2))
- 1 # TMAG5273_DT_AXIS_RANGE_HIGH     (+/-80 mT (TMAG5273A1) or +/-266 mT (TMAG5273A2))
- 2 # TMAG5273_DT_AXIS_RANGE_RUNTIME  (@runtime (initial value is: "high"))

Default value: 1

Legal values: 0, 1, 2

int-gpios

phandle-array

 
The INT signal connection.

The signal is active-low as produced by the sensor.
Either used for interrupt signaling, or triggering a conversion.

temperature-coefficient

int

 
Selects the magnet temperature coefficient.
Defaults to none (TMAG5273_DT_TEMP_COEFF_NONE).

  - 0 # TMAG5273_DT_TEMP_COEFF_NONE    (none)
  - 1 # TMAG5273_DT_TEMP_COEFF_NDBFE   (0.12 %/deg C (NdBFe))
  - 2 # TMAG5273_DT_TEMP_COEFF_CERAMIC (0.2 %/deg C (Ceramic))

Ignored if temperature is not measured.

Legal values: 0, 1, 2

trigger-conversion-via-int

boolean

 
Selects initiation of a single conversion based on a trigger via
the INT-pin if enabled, and via I2C-command if disabled.

Used in "standby"-, "wakeup-and-sleep"- and "sleep"-mode.
Using I2C-conversion trigger may result in (handled) I2C-errors.

angle-magnitude-axis

int

 
Enables angle calculation, magnetic gain, and offset corrections
between two selected magnetic channels.
Defaults to no additional calculations (TMAG5273_DT_ANGLE_MAG_NONE).

- 0 # TMAG5273_DT_ANGLE_MAG_NONE    (deactivated)
- 1 # TMAG5273_DT_ANGLE_MAG_XY      (x/y)
- 2 # TMAG5273_DT_ANGLE_MAG_YZ      (y/z)
- 3 # TMAG5273_DT_ANGLE_MAG_XZ      (x/z)
- 4 # TMAG5273_DT_ANGLE_MAG_RUNTIME (@runtime (initial value is: "deactivated"))

Legal values: 0, 1, 2, 3, 4

ch-mag-gain-correction

int

 
Channel for the magnitude gain correction.
Defaults to 1st channel.

  - 0 # TMAG5273_DT_CORRECTION_CH_1 (1st channel)
  - 1 # TMAG5273_DT_CORRECTION_CH_2 (2nd channel)

Only active if angle-magnitude-calculation is active.

Legal values: 0, 1

average-mode

int

 
Enables additional sampling of the sensor data to reduce the noise effect
(or to increase resolution).

Note that averaging will influence the output data rate.
Defaults to 2x averaging (TMAG5273_DT_AVERAGING_2X).

- 0 # TMAG5273_DT_AVERAGING_NONE  (10.0-kSPS (3-axes) or 20-kSPS   (1 axis))
- 1 # TMAG5273_DT_AVERAGING_2X    (5.7-kSPS  (3-axes) or 13.3-kSPS (1 axis))
- 2 # TMAG5273_DT_AVERAGING_4X    (3.1-kSPS  (3-axes) or 8.0-kSPS  (1 axis))
- 3 # TMAG5273_DT_AVERAGING_8X    (1.6-kSPS  (3-axes) or 4.4-kSPS  (1 axis))
- 4 # TMAG5273_DT_AVERAGING_16X   (0.8-kSPS  (3-axes) or 2.4-kSPS  (1 axis))
- 5 # TMAG5273_DT_AVERAGING_32X   (0.4-kSPS  (3-axes) or 1.2-kSPS  (1 axis))

Default value: 1

Legal values: 0, 1, 2, 3, 4, 5

crc-enabled

boolean

 
Activate I2C CRC byte to be sent.

low-noise

boolean

 
Select low-noise mode when enabled, and low-power mode when disabled.

ignore-diag-fail

boolean

 
Ignore detected diagnostic fail.
According to the manual, this should be done if VCC < 2.3V.