File content as of revision 0:f89f2dc4b003:

 #include "FXLS8471Q.h"
 
FXLS8471Q::FXLS8471Q(PinName mosi, PinName miso, PinName sck, PinName cs) : _spi(mosi, miso, sck), _spi_cs(cs) {
    _spi_cs = 1;
    wait(0.1);
    begin();
}
    

    
void FXLS8471Q::RegWrite( int reg, int *d, int len)
{
    int ob[2];
    int c = 0;
    ob[1] = 0;
    ob[0] = reg + 128;
    _spi_cs = 0;
    _spi.write(ob[0]);
    _spi.write(ob[1]);
    while(c < len) _spi.write(d[c++]);
    _spi_cs = 1;
}
   
void FXLS8471Q::RegRead( int reg, int *d, int len)
{
    int ob[2];
    int c = 0;
    ob[0] = reg;
    ob[1] = 0;
    _spi_cs = 0;
    _spi.write(ob[0]);
    _spi.write(ob[1]);
    while(c < len) d[c++] = _spi.write(0xff);
    _spi_cs = 1;
}

void FXLS8471Q::begin(void)
{
    int databyte;

    // write 0000 0000 = 0x00 to accelerometer control register 1 to place FXLS8471Q into
    // standby
    // [7-1] = 0000 000
    // [0]: active=0
    databyte = 0x00;
    RegWrite(FXLS8471Q_CTRL_REG1, &databyte, 1);

    // write 0000 0001= 0x01 to XYZ_DATA_CFG register
    // [7]: reserved
    // [6]: reserved
    // [5]: reserved
    // [4]: hpf_out=0
    // [3]: reserved
    // [2]: reserved
    // [1-0]: fs=00 for accelerometer range of +/-2g with 0.244mg/LSB
    databyte = 0x00;
    RegWrite(FXLS8471Q_XYZ_DATA_CFG, &databyte, 1);

    // write 0001 0101b = 0x15 to accelerometer control register 1
    // [7-6]: aslp_rate=00
    // [5-3]: dr=010 for 200Hz data rate
    // [2]: lnoise=1 for low noise mode
    // [1]: f_read=0 for normal 16 bit reads
    // [0]: active=1 to take the part out of standby and enable sampling
    databyte = 0x15;
    RegWrite(FXLS8471Q_CTRL_REG1, &databyte, 1); 
}

void FXLS8471Q::ReadXYZ(float * fdata)
{
int raw[7];
int16_t ix, iy, iz;
RegRead(FXLS8471Q_STATUS, raw, 7);

ix = ((raw[1] * 256) + raw[2]);// / 4;
iy = ((raw[3] * 256) + raw[4]);// / 4;
iz = ((raw[5] * 256) + raw[6]);// / 4;
fdata[0] = ((float) ix) / 16384.0;
fdata[1] = ((float) iy) / 16384.0;
fdata[2] = ((float) iz) / 16384.0;
}