Sensor calls

• <SensorBinder type = "">: You can bind the sensor data to the variables for gravity sensing, orientation sensor, acceleration sensors, pressure sensors (altitude) Example:

  <VariableBinders>
    // Orientation sensor:
            type = "orientation"
            index = 0: azimuth, from 0 to 359,0 = North, 90 = East, 180 = South, 270 = West
            index = 1: pitch angle, -180 ~ 180, z-axis steering y-axis positive direction
            index = 2: roll angle, -90 ~ 90, x-axis steering z axis positive direction
    <SensorBinder type = "orientation">
        <Variable name = "" index = "0" />     
        <Variable name = "" index = "1" />
        <Variable name = "" index = "2" />
    </ SensorBinder>
    // Linear acceleration
            type = "linear_acceleration"
            index = 0: x direction of linear acceleration
            index = 1: linear acceleration y direction
            index = 2: z direction of linear acceleration
            Linear acceleration is to remove the influence of gravity: gravitational acceleration = linear acceleration +
    <SensorBinder type = "linear_acceleration">
        <Variable name = "linear_acceleration_x" index = "0" />
        <Variable name = "linear_acceleration_y" index = "1" />
        <Variable name = "linear_acceleration_z" index = "2" />
    </ SensorBinder>
    // Acceleration
            type = "accelerometer"
            index = 0: x-direction acceleration
            index = 1: y direction acceleration
            index = 2: z direction acceleration
    <SensorBinder type = "accelerometer">
        <Variable name = "" index = "0" />
        <Variable name = "" index = "1" />
        <Variable name = "" index = "2" />
    </ SensorBinder>
    // Gravity sensor
            type = "gravity"
            index = 0: gravitational acceleration in the x direction
            gravitational acceleration in the y direction: index = 1
            index = 2: gravitational acceleration z direction
    <SensorBinder type = "gravity">
        <Variable name = "" index = "0" />
        <Variable name = "" index = "1" />
        <Variable name = "" index = "2" />
    </ SensorBinder>
    // Pressure sensor
            type = "pressure"
            index = 0: barometric pressure unit hPa. The average air pressure at sea level is 1013.25hPa, it can be estimated based on the barometric pressure altitude.
    <SensorBinder type = "pressure">
        <Variable name = "" index = "0" />
    </ SensorBinder>
  </ VariableBinders>