hi i'm trying to logging the data received with timestamps for magnetic field sensor, could you give me the java code that you used in this article?
2009년 2월 18일 수요일 오후 4시 8분 2초 UTC+9, gjs 님의 말: > > Hi, > > Try logging the data received with timestamps ( in memory ) for > android.hardware.SensorListener.onSensorChanged(int sensor, float[] > values) and you'll soon work out the Frequency, I have found > accelerometer updates being received at approximately 30~40ms > intervals on a G1 eg: > > 1227266554492 2 [0] = 0.16344418 [1] = -9.629586 [2] = -1.3620348 [3] > = 0.16344418 [4] = -9.629586 [5] = -1.3620348 > 1227266554495 1 [0] = 7.3883734 [1] = -82.0 [2] = 1.0 [3] = 7.3883734 > [4] = -82.0 [5] = 1.0 > 1227266554525 8 [0] = 8.3125 [1] = 12.875 [2] = -71.5625 [3] = 8.3125 > [4] = 12.875 [5] = -71.5625 > 1227266554528 2 [0] = 0.05448139 [1] = -9.684067 [2] = -1.3075534 [3] > = 0.05448139 [4] = -9.684067 [5] = -1.3075534 > 1227266554531 1 [0] = 7.5050936 [1] = -82.0 [2] = 0.0 [3] = 7.5050936 > [4] = -82.0 [5] = 0.0 > 1227266554564 8 [0] = 8.5625 [1] = 12.125 [2] = -71.5625 [3] = 8.5625 > [4] = 12.125 [5] = -71.5625 > 1227266554566 2 [0] = 0.040861044 [1] = -9.670447 [2] = -1.3211738 [3] > = 0.040861044 [4] = -9.670447 [5] = -1.3211738 > 1227266554603 8 [0] = 8.0625 [1] = 12.375 [2] = -71.8125 [3] = 8.0625 > [4] = 12.375 [5] = -71.8125 > 1227266554606 2 [0] = -0.013620348 [1] = -9.724928 [2] = -1.2666923 > [3] = -0.013620348 [4] = -9.724928 [5] = -1.2666923 > 1227266554609 1 [0] = 7.5050936 [1] = -83.0 [2] = 0.0 [3] = 7.5050936 > [4] = -83.0 [5] = 0.0 > 1227266554643 8 [0] = 8.3125 [1] = 12.375 [2] = -71.8125 [3] = 8.3125 > [4] = 12.375 [5] = -71.8125 > 1227266554646 2 [0] = -0.013620348 [1] = -9.615966 [2] = -1.2666923 > [3] = -0.013620348 [4] = -9.615966 [5] = -1.2666923 > 1227266554649 1 [0] = 7.5050936 [1] = -82.0 [2] = 0.0 [3] = 7.5050936 > [4] = -82.0 [5] = 0.0 > 1227266554683 8 [0] = 7.8125 [1] = 11.625 [2] = -71.5625 [3] = 7.8125 > [4] = 11.625 [5] = -71.5625 > 1227266554686 2 [0] = 0.040861044 [1] = -9.615966 [2] = -1.2666923 [3] > = 0.040861044 [4] = -9.615966 [5] = -1.2666923 > > (These examples were when using SENSOR_DELAY_GAME rate, you can > probably do better if you listen just for the accelerometer updates > and use a faster RATE) > > You can also vary this Frequency (rate) with > android.hardware.SensorManager.registerListener(SensorListener > listener, int sensors, int rate) > > int SENSOR_DELAY_FASTEST get sensor data as fast as possible > int SENSOR_DELAY_GAME rate suitable for games > int SENSOR_DELAY_NORMAL rate (default) suitable for screen > orientation > changes > int SENSOR_DELAY_UI rate suitable for the user interface > > I can't help you with the Precision, maybe have a look at > android.hardware.SensorListener.onAccuracyChanged (int sensor, int > accuracy). > > Another idea is to find the specs for the sensor being used in the g1 > or g2, but there is nothing like measuring it for yourself.... > > Regards > > On Feb 17, 8:39 pm, ashu <montoo...@gmail.com> wrote: > > So my question still stands. Frequency? Precision? Thanks for the > > attempt, Jubei. > > > > On Feb 11, 6:14 am, Jubei <nkatza...@gmail.com> wrote: > > > > > Supposedly you pass a 3rd parameter to the sensormanager's > > > registerLister function but It doesnt seem to make any difference. > > > > > On Feb 11, 7:33 pm,ashu<montoo...@gmail.com> wrote: > > > > > > Hey, I wanted to get the frequency of accelerometer output. How > many > > > > readings can I get per second? And to what precision do I get? > Thanks- Hide quoted text - > > > > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
