슬라이드 제목 없음 - TizenTizen... · 2015. 6. 24. · SW Design Principles Gyroscope Sensor Functionality To detect angular velocity, which is calculated using the measurement

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Spring 2015

Soo Dong Kim, Ph.D.Professor, Department of Computer Science

Software Engineering Laboratory

Soongsil UniversityOffice 02-820-0909 Mobile [email protected] http://soft.ssu.ac.kr

Tizen Sensors(Tizen Ver. 2.3)

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Unit 6-1.

Sensors of Tizen Ver. 2.3 Specification

3© 2015 Soo Dong KimSW Design Principles

Sensor List of Tizen Ver. 2.3 Accelerometer Sensor

Gravity Sensor

Linear Accelerometer Sensor

Magnetic Sensor

Rotation Vector Sensor

Orientation Sensor

Gyroscope Sensor

Light Sensor

Proximity Sensor

Pressure Sensor

Ultraviolet Sensor

Temperature Sensor

Humidity Sensor

GPS Sensor


Accelerometer Sensor Functionality

To measure the device's accelerometer vector in 3 axes relative to its body frame

Contexts Acquired

Measurement Type Range Unit

X Float Min value = -19.6Max value = 19.6

m/s2

Y Float Min value = -19.6Max value = 19.6

m/s2

Z Float Min value = -19.6Max value = 19.6

m/s2


Gravity Sensor Functionality

To measure the vector components of gravity when the device is at rest or moving slowly

Contexts Acquired



m/s2


m/s2


m/s2


Linear Accelerometer Sensor Functionality

To measure user-driven changes in velocity without considering the gravity value

Contexts Acquired



m/s2


m/s2


m/s2


Magnetic Sensor Functionality

To measure magnetic field strength and fluctuations, and splits the measurement into X, Y, and Z components

Contexts Acquired

Measurement Type Unit

X Float μT (micro Tesla)

Y Float μT (micro Tesla)

Z Float μT (micro Tesla)


Rotation Vector Sensor Functionality

To represents the orientation of the device as a combination of an angle and an axis

Contexts Acquired

Measurement Type Range

X Float Min value = -1Max value = 1

Y Float Min value = -1Max value = 1

Z Float Min value = -1Max value = 1

W Float Min value = -1Max value = 1


Orientation Sensor Functionality

To combines the 3-axis accelerometer sensor and 3-axis magnetic sensor to determine the angular positions

Contexts Acquired


Azimuth Float Min value = 0Max value = 360

Degrees (°)

Pitch Float Min value = -180Max value = 180

Degrees (°)

Roll Float Min value = -180Max value = 180

Degrees (°)


Gyroscope Sensor Functionality

To detect angular velocity, which is calculated using the measurement data retrieved from a 3-axis gyroscope

Contexts Acquired



Degrees/s (°/s)


Degrees/s (°/s)


Degrees/s (°/s)


Light Sensor Functionality

To detect the brightness of ambient light

Contexts Acquired


Level Float Min value = 0Max value = 45875

Lux


Proximity Sensor Functionality

To detect the presence of nearby objects

Contexts Acquired


Proximity Float - -


Pressure Sensor Functionality

To measure pressure, typically the pressure of gases or liquids

Contexts Acquired


Pressure Float Min value = 260Max value = 1260

hPa


Ultraviolet Sensor Functionality

To measure the ultraviolet index

Contexts Acquired


UV Index Float Min value = 0Max value = 15

uv index


Temperature Sensor Functionality

To measure the temperature, just like a thermometer.

Contexts Acquired


Temperature Float Min value = -30Max value = 100

℃


Humidity Sensor Functionality

To measure Humidity

Contexts Acquired


Humidity Float Min value = 0Max value = 100

%


GPS Sensor Functionality

To retrieve the current location of the device user

Context Acquired

Measurement Type

Latitude double

Longitude double

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Unit 6-2. Sensors of Tizen Devices


List of Sensors in Samsung Z1 Accelerometer Sensor

GPS Sensor


Accelerometer Sensor (1) Required Header File

sensor.h

sensor_create_listener ()

To create a sensor listener

Parameters

Return 0 on success, otherwise a negative error value

Type Name Description

sensor_h sensor The sensor handle

sensor_listener_h* listener The new listener handle


Accelerometer Sensor (2) sensor_listener_set_event_cb ()

To register a callback function to be invoked when a sensor event occurs

Parameters



sensor_listener_h listener The sensor handle

unsigned int interval_ms The interval at which sensor events are delivered

sensor_event_cb callback The callback function to register

void* data The user data to be passed to the callback function


Accelerometer Sensor (3) sensor_listener_start ()

To start the sensor server for the given listener

Parameter



sensor_listener_h listener The listener handle


Accelerometer Sensor (4) Code Examples

To define a callback function for the accelerometer sensor

To register the callback function and start a sensor listenersensor_h sensor;sensor_listener_h listener;

sensor_get_default_sensor(SENSOR_ACCELEROMETER, &sensor); sensor_create_listener (sensor, &listener); // Creates a sensor listenersensor_listener_set_event_cb( // Registers the callback function

listener, 100, on_sensor_event, user_data);sensor_listener_start(listener); // Starts sensing

void on_sensor_event(sensor_h sensor, sensor_event_s *event, void *user_data){

sensor_type_e type;sensor_get_type(sensor, &type);switch (type) {

case SENSOR_ACCELEROMETER:// Codes go here.

}}


GPS Sensor (1) Required Header File

locations.h

location_manager_create()

To create a new location manager

Parameters

Return 0 on success otherwise a negative error value


location_method_e method The location method

location_manager.h* manager The new location manager handle


GPS Sensor (2) location_manager_set_position_updated_cb ()

To register a callback function to be invoked at defined interval with updated position information

Parameters



location_manager_h manager The location manager handle

location_position_updated_cb callback The callback function to register

int interval The interval [1 ~ 120] (seconds)

void* user_data The user data to be passed to the callback function


GPS Sensor (3) location_manager_start ()

To start the location service

Parameter



location_manager_h manager The location manager handle


GPS Sensor (4) Code Examples

To define a callback function the GPS sensor

To register the callback function and start a sensor listenerlocation_manager_h manager;

// Creates a location managerlocation_manager_create(LOCATIONS_METHOD_GPS, &manager);// Registers a callback function to the managerlocation_manager_set_service_state_changed_cb(manager, _state_changed_cb, NULL);// Starts the managerlocation_manager_start(manager);

static void _state_changed_cb(location_service_state_e state, void *user_data){

double latitude, longitude;time_t timestamp;

if (state == LOCATIONS_SERVICE_ENABLED) {

// Codes go here.}

}


Thank You !

Documents

슬라이드 제목 없음 - TizenTizen... · 2015. 6. 24. · SW Design Principles Gyroscope Sensor Functionality To detect angular velocity, which is calculated using the measurement