zsensor — Zephyr sensor bindings

The zsensor module contains a class for using sensors with Zephyr.

class Sensor — sensor control for the Zephyr port

Use this class to access data from sensors on your board. See Zephyr documentation for sensor usage here: Sensors.

Sensors are defined in the Zephyr devicetree for each board. The quantities that a given sensor can measure are called a sensor channels. Sensors can have multiple channels to represent different axes of one property or different properties a sensor can measure. See Channels below for defined sensor channels.

Constructor

class zsensor.Sensor(device_name)

Device names are defined in the devicetree for your board. For example, the device name for the accelerometer in the FRDM-k64f board is “FXOS8700”.

Methods

Sensor.measure()

Obtains a measurement sample from the sensor device using Zephyr sensor_sample_fetch and stores it in an internal driver buffer as a useful value, a pair of (integer part of value, fractional part of value in 1-millionths). Returns none if successful or OSError value if failure.

Sensor.get_float(sensor_channel)

Returns the value of the sensor measurement sample as a float.

Sensor.get_micros(sensor_channel)

Returns the value of the sensor measurement sample in millionths. (Ex. value of (1, 500000) returns as 1500000)

Sensor.get_millis(sensor_channel)

Returns the value of sensor measurement sample in thousandths. (Ex. value of (1, 500000) returns as 1500)

Sensor.get_int(sensor_channel)

Returns only the integer value of the measurement sample. (Ex. value of (1, 500000) returns as 1)

Channels

zsensor.ACCEL_X

Acceleration on the X axis, in m/s^2.

zsensor.ACCEL_Y

Acceleration on the Y axis, in m/s^2.

zsensor.ACCEL_Z

Acceleration on the Z axis, in m/s^2.

zsensor.GYRO_X

Angular velocity around the X axis, in radians/s.

zsensor.GYRO_Y

Angular velocity around the Y axis, in radians/s.

zsensor.GYRO_Z

Angular velocity around the Z axis, in radians/s.

zsensor.MAGN_X

Magnetic field on the X axis, in Gauss.

zsensor.MAGN_Y

Magnetic field on the Y axis, in Gauss.

zsensor.MAGN_Z

Magnetic field on the Z axis, in Gauss.

zsensor.DIE_TEMP

Device die temperature in degrees Celsius.

zsensor.PRESS

Pressure in kilopascal.

zsensor.PROX

Proximity. Dimensionless. A value of 1 indicates that an object is close.

zsensor.HUMIDITY

Humidity, in percent.

zsensor.LIGHT

Illuminance in visible spectrum, in lux.

zsensor.ALTITUDE

Altitude, in meters.