其中,sensor为传感器的标志符,而不同的传感器则采用union方式来表示,sensors_vec_t结构体用来表示不同传感器的数据,sensors_vec_t定义如下: Sensor设备结构体sensors_poll_device_t,对标准硬件设备 hw_device_t结构体的扩展,主要完成读取底层数据,并将数据存储在struct sensors_poll_device_t结构体中,poll函数用来获取...
每个传感器的数据由sensors_event_t结构体表示,定义如下: 其中,sensor为传感器的标志符,而不同的传感器则采用union方式来表示,sensors_vec_t结构体用来表示不同传感器的数据,sensors_vec_t定义如下: Sensor设备结构体sensors_poll_device_t,对标准硬件设备 hw_device_t结构体的扩展,主要完成读取底层数据,并将数据存储...
public void onSensorChanged(SensorEvent event); 实现下列getSensorList()方法来取得感应检测Sensor的值; List<Sensor> sensors = sm.getSensorList(Sensor.TYPE_TEMPERATURE); sm.regesterListener(SensorEventListener listener, Sensor sensor, int rate); 第一个参数:监听Sensor事件,第二个参数是Sensor目标种类的值...
struct sensors_event_t表示传感器的数据 /** * Union of the various types of sensor data * that can be returned. */ typedef struct sensors_event_t { int32_t version; /* must be sizeof(struct sensors_event_t) */ int32_t sensor; /* sensor identifier */ int32_t type; /* sensor t...
Motion sensors(运动传感器) 这些传感器测量加速力,并沿三个轴的旋转力。此类别包括加速度计,重力感应器, 陀螺仪和旋转矢量传感器。 Environmental sensors (环境传感器) 这些传感器测量各种环境参数,例如环境空气温度和压力,照明和湿度。此类别包括气压计,光度计,和温度计。
sensors_event_t.data[3] = cos(theta/2) publicstaticfinalintTYPE_ROTATION_VECTOR=11; 传感器使用方式 privateSensorManagersensorManager;// 传感器管理器对象sensorManager=(SensorManager)getSystemService(Context.SENSOR_SERVICE);SensoraccelerometerSensor=sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);B...
This is usually done using the information from other sensors, but is beyond the scope of this document. android.hardware.Sensor#TYPE_LIGHT Sensor.TYPE_LIGHT: values[0]: Ambient light level in SI lux units android.hardware.Sensor#TYPE_PRESSURE Sensor.TYPE_PRESSURE: values[0]: Atmospheric...
This class represents a android.hardware.Sensor Sensor event and holds information such as the sensor's type, the time-stamp, accuracy and of course the sensor's SensorEvent#values data.C# 复制 [Android.Runtime.Register("android/hardware/SensorEvent", DoNotGenerateAcw=true)] public class ...
public void onSensorChanged(SensorEvent event) { // alpha is calculated as t / (t + dT) // with t, the low-pass filter's time-constant // and dT, the event delivery rate final float alpha = 0.8; gravity[0] = alpha * gravity[0] + (1 - alpha) * event.values[0]; gravity[1...
sensors.cpp sensors.h README License This is an InputEvent based Sensors HAL implementation for interfaceing to OSP based sensor-hubs. Setting up a build environment clone into your android tree under hardware/sensorplatforms/libsensors execute a top level build ...