CDD: Require rotation vector when accel, gyro, magneto available
The rotation vector is now a requirement when a device
includes an accellerometer, a gyroscope sensor and a magentometer
sensor. The requirment has become MANDATORY now as the Android Open
Source project provides the rotation vector sensor implementation
when all 3 base sensors are correctly implemented in the Sensor HAL.
Accelerometer measurements requires at least 12bit resolution.
Bug: 18984395
Bug: 24376867
Change-Id: I6b742954506da72083ec6b1f22c473842e790f94
diff --git a/src/compatibility/android-cdd.html b/src/compatibility/android-cdd.html
index 8278113..461d05f 100644
--- a/src/compatibility/android-cdd.html
+++ b/src/compatibility/android-cdd.html
@@ -3333,7 +3333,7 @@
Android APIs [<a href="http://developer.android.com/reference/android/hardware/SensorEvent.html">Resources, 74</a>].</li>
<li>MUST be capable of measuring from freefall up to four times the gravity (4g) or
more on any axis.</li>
- <li>MUST have a resolution of at least 8-bits and SHOULD have a resolution of at
+ <li>MUST have a resolution of at least 12-bits and SHOULD have a resolution of at
least 16-bits.</li>
<li>SHOULD be calibrated while in use if the characteristics changes over the life
cycle and compensated, and preserve the compensation parameters between device
@@ -3352,7 +3352,7 @@
TYPE_LINEAR_ACCELERATION composite sensors and SHOULD implement the
TYPE_GAME_ROTATION_VECTOR composite sensor. Existing and new Android devices
are STRONGLY RECOMMENDED to implement the TYPE_GAME_ROTATION_VECTOR sensor.</li>
- <li>SHOULD implement a TYPE_ROTATION_VECTOR composite sensor, if a gyroscope sensor
+ <li>MUST implement a TYPE_ROTATION_VECTOR composite sensor, if a gyroscope sensor
and a magnetometer sensor is also included.</li>
</ul>
@@ -3385,7 +3385,7 @@
<li>SHOULD have a standard deviation, calculated on a per axis basis on samples
collected over a period of at least 3 seconds at the fastest sampling rate, no
greater than 0.5 µT.</li>
- <li>SHOULD implement a TYPE_ROTATION_VECTOR composite sensor, if an accelerometer
+ <li>MUST implement a TYPE_ROTATION_VECTOR composite sensor, if an accelerometer
sensor and a gyroscope sensor is also included.</li>
<li>MAY implement the TYPE_GEOMAGNETIC_ROTATION_VECTOR sensor if an accelerometer
sensor is also implemented. However if implemented, it MUST consume less than
@@ -3424,7 +3424,7 @@
or rad^2 / s). The variance is allowed to vary with the sampling rate, but must
be constrained by this value. In other words, if you measure the variance of
the gyro at 1 Hz sampling rate it should be no greater than 1e-7 rad^2/s^2.</li>
- <li>SHOULD implement a TYPE_ROTATION_VECTOR composite sensor, if an accelerometer
+ <li>MUST implement a TYPE_ROTATION_VECTOR composite sensor, if an accelerometer
sensor and a magnetometer sensor is also included.</li>
<li>If an accelerometer sensor is included, MUST implement the TYPE_GRAVITY and
TYPE_LINEAR_ACCELERATION composite sensors and SHOULD implement the
