9f85a70a04
Docs now start at a high level, discussing sensors, attributes, channels, and reading data from them. Followed by more detailed usage guides in how to solve common problems sensor users may run into. Additionally renames the sensor_api sphinx tag to sensor Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
29 lines
1.2 KiB
ReStructuredText
29 lines
1.2 KiB
ReStructuredText
Device Tree
|
|
###########
|
|
|
|
In the context of sensors device tree provides the initial hardware configuration
|
|
for sensors on a per device level. Each device must specify a device tree binding
|
|
in Zephyr, and ideally, a set of hardware configuration options for things such
|
|
as channel power modes, data rates, filters, decimation, and scales. These can
|
|
then be used in a boards devicetree to configure a sensor to its initial state.
|
|
|
|
.. code-block:: dts
|
|
|
|
#include <zephyr/dt-bindings/icm42688.h>
|
|
|
|
&spi0 {
|
|
/* SPI bus options here, not shown */
|
|
|
|
accel_gyro0: icm42688p@0 {
|
|
compatible = "invensense,icm42688";
|
|
reg = <0>;
|
|
int-gpios = <&pioc 6 GPIO_ACTIVE_HIGH>; /* SoC specific pin to select for interrupt line */
|
|
spi-max-frequency = <DT_FREQ_M(24)>; /* Maximum SPI bus frequency */
|
|
accel-pwr-mode = <ICM42688_ACCEL_LN>; /* Low noise mode */
|
|
accel-odr = <ICM42688_ACCEL_ODR_2000>; /* 2000 Hz sampling */
|
|
accel-fs = <ICM42688_ACCEL_FS_16>; /* 16G scale */
|
|
gyro-pwr-mode = <ICM42688_GYRO_LN>; /* Low noise mode */
|
|
gyro-odr = <ICM42688_GYRO_ODR_2000>; /* 2000 Hz sampling */
|
|
gyro-fs = <ICM42688_GYRO_FS_16>; /* 16G scale */
|
|
};
|
|
};
|