参数资料
型号: ATAVRSBIN1
厂商: Atmel
文件页数: 14/37页
文件大小: 0K
描述: INERTIAL ONE SENSOR BOARD
产品培训模块: Sensors Xplained
标准包装: 1
系列: Sensors Xplained
传感器类型: 加速计,陀螺仪,电子罗盘,温度
接口: I²C
电源电压: 3.3V
嵌入式:
已供物品:
已用 IC / 零件: AK8975,BMA150,ITG-3200
相关产品: 828-1003-6-ND - 3-AXIS ACCELEROMETER DIGITAL I/F
828-1003-1-ND - 3-AXIS ACCELEROMETER DIGITAL I/F
828-1003-2-ND - 3-AXIS ACCELEROMETER DIGITAL I/F

7 Reading sensor data
7.1 Overview
7.1.1 Sensor read interfaces
The Atmel Sensors Xplained software provides a set of high-level functions to obtain
data from sensor devices and return the measurements in an easy-to-use form. Each
type of sensor has a corresponding read function to get data from the device.
Table 7-1 contains a summary of the sensor read functions for each sensor type.
Table 7-1. Sensor read function summary.
Sensor type
All
Sensors Xplained function
sensor_device_id()
Sensor_data_t field(s)
device.id
Measurement units
device.version
Accelerometer (X, Y, Z)
sensor_get_acceleration() axis.x
axis.y
axis.z
Milli-g
Compass/Magnetometer
sensor_get_heading()
heading.direction
heading.inclination
heading.strength
Direction: Degrees from
magnetic north (0° to 360°)
Inclination: Degrees from
horizontal (-90° to +90°)
Field strength : Microtesla
(μT)
(Note: One gauss (G) = 100μT)
sensor_get_field()
axis.x
axis.y
axis.z
Microtesla (μT)
Gyroscope (X, Y, Z)
sensor_get_rotation()
axis.x
axis.y
Degrees of rotation per
second (°/s)
axis.z
Pressure
Temperature
sensor_get_pressure()
sensor_get_temperature()
pressure.value
temperature.value
Pascal (Pa)
Degrees Celsius (°C)
NOTE
The code sequence examples found later in this section reference sensor.h
explicitly. If you are using an automatically generated asf.h file that includes
sensor.h , you may simply include asf.h instead.
7.1.2 Sensor data structure – sensor_data_t
All API functions that return sensor data readings do so using the sensor_data_t
data structure. When the sensor read function returns, this structure will contain the
measurement values from the device, as well as a high-granularity timestamp.
The sensor_data_t structure uses a C union to define “aliases” of the data fields to
provide more meaningful names for use in your application. See Table 7-1 for the
recommended field name references for specific functions.
14
Atmel AVR4016
8367B-AVR-06/11
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