accelerometer sensor applications

Recently engaged in a project related to the accelerometer, so contact with more sensors, now write a summary, to prevent the later and I like to walk so many detours.The first thing to see is the pin graph, if the driver should not first troubleshoot the hardware problem:SPI Connection methodIIc Connection method We then focus on a few registers: sensor Name (read/write) Register number

to study)Use third-party libraries (the underlying C functions are encapsulated with OC)Https://github.com/Shmoopi/iOS-System-ServicesHttps://github.com/erica/uidevice-extensionAcceleration meterThe accelerometer can be used to detect the movement of a device, and common applications such as shake/pedometer are based on accelerometers."Accelerometer mainly throu

Acceleration Sensor Accelerometer The Android system supports powerful management services for sensors. The steps for developing sensor applications are as follows: (1) Call the getSystemService (Context. SENSOR_SERVICE) method of Context to obtain the Sensor Manager object.

); } public String Getlastknowny () {return (y = =-999)? "Null": string.valueof (y); } public String Getlastknownz () {return (z = =-999)? "Null": String.valueof (z); } public void Setrate (String rate) {mrate = Sensorrate.getint (rate),} public String getrate () {return sensorrate.getstring (Mrat e); } public void setcycle (int milliseconds) {mcycle = milliseconds,} public int getcycle () {return mcycle;} public void S eteventcycle (int milliseconds) {meventcycle = milliseconds;} public int get

timeIsaccelerometeractive---is collectingStartaccelerometerupdates---PullStartaccelerometerupdatestoqueue---PushStopaccelerometerupdates---stop samplingAccelerometerdata---data collected*/3. Set sampling intervalSelf.mgr.accelerometerUpdateInterval = 1.0/30.0;4. Start sampling[Self.mgr startaccelerometerupdatestoqueue:[nsoperationqueue Mainqueue] withhandler:^ (CMAccelerometerData * Accelerometerdata, Nserror *error) {When the data is collected, it is calledif (error) return;cmacceleration acce

The coordinate system of the Android sensor is not the same as its 2D design, with coordinate systems such as:Once the sensor listener is registered with the Sensormanager object, an object of sensorevent can be obtained within the Onsensorchanged method.The Sensorevent object has an important member variable public final float[] values, which are defined as follows:Public final float[] valuesThe length and

Android Orientation Sensor (Direction Sensor) details and applications, androidorientation I. Preface This blog is my first article on "Android advanced". It has been around for more than four months since I started Android, and I have some experiences, I can also do something on my own. Thanks to the android development tips of our company and the omnipotent

Sensors on the Android platform include the accelerometer, orientation, magnetic field, and light ). The development of sensor applications on the Android platform is implemented through the listener mechanism. The main steps to develop applications for one or more sensors are as follows: 1. Create a sensormanager

has" + allsensors.size () + "sensors, they are: \ n"; //display specific information for each sensor for(Sensor s:allsensors) {String tempstring= "\ n" + "Device Name:" + s.getname () + "\ n" + "Device version:" + s.getversion () + "\ n" + "Supplier:" + S.getvendor () + "\ n"; System.out.println ("Sensor:" +S.gettype ()); Switch(S.gettype ()) { CaseSenso

gravitational acceleration of 9.7997.Now assume that the gravity of the position is 9.8:, then:Put the phone flat on the table, the x-axis and the y-axis of the gravitational acceleration of the 0,z axis of the value of 9.8;The mobile phone is erected to prevent (completely upright), then the x-axis and z-axis of the gravitational acceleration of the 0,y axis is more than 9.8 of the value of gravity;When the phone is sideways (completely sideways), the gravitational acceleration of the y-axis a