Magnetometer readings are incorrect - byte order issue

[konkrog]

The code for magnetometer reading must be fixed. The byte order is incorrect according to datasheet. The code should read:

`/**

• @brief Read readings from magnetometer.
  */
  void MPU9255::read_mag()
  {
  requestBytes(MAG_address, MAG_XOUT_L, 8);//note we must request 8 bytes of data because otherwise it does not work

uint8_t rawData[6];
readArray(rawData,6);

mx = ((int16_t)rawData[1] << 8) | rawData[0];
my = ((int16_t)rawData[3] << 8) | rawData[2];
mz = ((int16_t)rawData[5] << 8) | rawData[4];
}
`

[MaartenJB]

thanks konkrog for posting, this fixed the issue. I've made a pull request for the library owner.

For anyone who want the fixed version until the maintainer of this library fixed the problem, you can you the fixed version:

https://github.com/MaartenJB/MPU9255-Arduino-Library