Hi all I am working on an accelerometer bma220 , and its datasheet says that data is in 2's complement form.So what i had to do was getting that 8 bit data in any 8 bit signed char and done. the bma220 have an 8 bit register of which first 6 bits are data and last two are zero.

void properdata(int16_t *msgData)
{
    printf("\nin proper data\n");
    int16_t temp, i;
    for(i=0; i<3; i++)
    {
        temp = *(msgData + i);
        printf("temp = %d sense = %d\n", temp, sense);
        temp = temp >> 2;    // only 6 bits data
        temp = temp / sense; //decimal value * .0625 = value in g
        printf("temp = %d\n", temp);            
    }    
}

in this program i am taking data in a unsigned variable msgdata and doing all the calculations on a signed variable. I just need to know if this is the correct way to convert data?