File content as of revision 0:96cf16c88314:

// CS needs to be connected to High in order to do I2C

#include "Tap.h"
extern I2C acc;
DigitalIn int2(p17);

char acc_config[2];
const int addr=(0x53<<1);
char data1[1];
char ack;
Timer b;


void Tap_init() 
    {
    wait(0.1);  
    acc_config[0]=0x31; acc_config[1]=0x0B;         //data format
    ack = acc.write(addr,acc_config, 2);
    wait(0.1);
      
    acc_config[0]=0x2D; acc_config[1]=0x08;         //power control->measure mode
    acc.write(addr,acc_config, 2);   
    wait(0.1);
    
    acc_config[0]=0x1D; acc_config[1]=0x50;         //Tap Threshold ->5g 
    acc.write(addr,acc_config, 2); 
    wait(0.1);
    
    acc_config[0]=0x21; acc_config[1]=0x10;         //Tap duration -> 0.01
    acc.write(addr,acc_config, 2);    
    wait(0.1);
    
    acc_config[0]=0x2A; acc_config[1]=0x07;         //Axis -> x&y&z
    acc.write(addr,acc_config, 2);
    wait(0.1);
    
    acc_config[0]=0x2E; acc_config[1]=0x40;         //enable interupt -> single and double tap
    acc.write(addr,acc_config, 2);
    wait(0.1);
    
    acc_config[0]=0x2F; acc_config[1]=0x40;         //map interupt ->int2
    acc.write(addr,acc_config, 2);
    wait(0.1);
    }
    
void Tap()
{      
                    acc_config[0]=0x30;
                    acc.write(addr,acc_config,1);            
                    acc.read(addr,data1,1);  // Get interupt information                 
}