Geek Answers Handbook

Is the update frequency set for the MotionUpdateInterval device the actual frequency?

Analysis of deviceMotion.timestamp showed that the refresh rate set in DeviceMotion is not the actual refresh rate.

I implemented a testing application below what I saw!

    update frequency     actual frequency       average time between two calls
       1/10.000000          10.232265              0.097730
       1/20.000000          19.533729              0.051194
       1/30.000000          30.696613              0.032577
       1/40.000000          42.975122              0.023269
       1/50.000000          53.711000              0.018618
       1/60.000000          53.719106              0.018615
       1/70.000000          71.627016              0.013961
       1/80.000000          71.627263              0.013961
       1/90.000000          53.719365              0.018615
       1/100.000000        107.442667              0.009307
       1/110.000000        107.437022              0.009308

did someone notice the same thing? this is mistake?

+5
source share
1 answer

, , , - . , . , , .

  • , .. .
  • iOS 4.2x, iOS 4.3x ([:] pull)
  • Motion

, Core Motion.

+1

More articles:


All Articles