File content as of revision 2:73fd396b4d49:

#include "ADXL345_I2C.h"

 ADXL345_I2C accelerometer(I2C_SDA, I2C_SCL);
 Serial pc(USBTX, USBRX);
 
 float XYZ[3];
 
 int16_t complement(int16_t value);
 int main() {
       pc.baud(115200);
     int readings[3] = {0, 0, 0};
     
     pc.printf("Starting ADXL345 test...\n");
     wait(.001);
     pc.printf("Device ID is: 0x%02x\n", accelerometer.getDeviceID());
    wait(.001);
    
     // These are here to test whether any of the initialization fails. It will print the failure
    if (accelerometer.setPowerControl(0x00)){
         pc.printf("didn't intitialize power control\n"); 
         return 0;  }
     //Full resolution, +/-16g, 4mg/LSB.
     wait(.001);
     
     if(accelerometer.setDataFormatControl(0x0B)){
        pc.printf("didn't set data format\n");
        return 0;  }
     wait(.001);
     
     //3.2kHz data rate.
     if(accelerometer.setDataRate(ADXL345_3200HZ)){
        pc.printf("didn't set data rate\n");
        return 0;    }
     wait(.001);
     
     //Measurement mode.
     
     if(accelerometer.setPowerControl(MeasurementMode)) {
        pc.printf("didn't set the power control to measurement\n"); 
        return 0;   } 
 
     while (1) {
     
         wait(0.5);
         
         accelerometer.getOutput(readings);
         XYZ[0] = (uint16_t)(readings[0] );   //doit rajouter le signe
         XYZ[1] = (uint16_t)(readings[1] ); //doit rajouter le signe
         XYZ[2] = (uint16_t)(readings[2] ); //doit rajouter le signe
        int16_t data = (float)complement(XYZ[0]);
        pc.printf("\n\r%.3f",XYZ[0]);
        //pc.printf("%.3f, %.3f, %.3f\n\r", XYZ[0], XYZ[1], XYZ[2]);
     }
 
 }
 
 int16_t complement(int16_t value){
    if(value & 0x8000){
        return (not(value - 1)) * -1;
    }else{
        return (not(value - 1));
    }
}