Arduino/Genuino 101 加速度传感器、陀螺仪传感器开发教程

#include "CurieIMU.h"

int lastOrientation = - 1; // previous orientation (for comparison)

void setup() {

  Serial.begin(9600); // initialize Serial communication

  while (!Serial);    // wait for the serial port to open

  // initialize device

  Serial.println("Initializing IMU device...");

  CurieIMU.begin();

  // Set the accelerometer range to 2G

  CurieIMU.setAccelerometerRange(2);

}

void loop() {

int orientation = - 1;   // the board's orientation

  String orientationString; // string for printing description of orientation

  /*

    The orientations of the board:

    0: flat, processor facing up

    1: flat, processor facing down

    2: landscape, analog pins down

    3: landscape, analog pins up

    4: portrait, USB connector up

    5: portrait, USB connector down

  */

  // read accelerometer:

  int x = CurieIMU.readAccelerometer(X_AXIS);

  int y = CurieIMU.readAccelerometer(Y_AXIS);

  int z = CurieIMU.readAccelerometer(Z_AXIS);

  // calculate the absolute values, to determine the largest

  int absX = abs(x);

  int absY = abs(y);

  int absZ = abs(z);

  if ( (absZ > absX) && (absZ > absY)) {

    // base orientation on Z

    if (z > 0) {

      orientationString = "up";

      orientation = 0; 

    } else {

      orientationString = "down";

      orientation = 1;

    }

  } else if ( (absY > absX) && (absY > absZ)) {

    // base orientation on Y

    if (y > 0) {

      orientationString = "digital pins up";

      orientation = 2;

    } else {

      orientationString = "analog pins up";

      orientation = 3;

    }

  } else {

    // base orientation on X

    if (x < 0) {

      orientationString = "connector up";

      orientation = 4;

    } else {

      orientationString = "connector down";

      orientation = 5;

    }

  }

  // if the orientation has changed, print out a description:

  if (orientation != lastOrientation) {

    Serial.println(orientationString);

    lastOrientation = orientation;

  }

}