BGW_SENSOR_XACCEL
sc->sc_sensor[BGW_SENSOR_XACCEL].type = SENSOR_INTEGER;
strlcpy(sc->sc_sensor[BGW_SENSOR_XACCEL].desc, "X_ACCEL",
sizeof(sc->sc_sensor[BGW_SENSOR_XACCEL].desc));
sc->sc_sensor[BGW_SENSOR_XACCEL].value = (msb << 4) | (lsb >> 4);
sc->sc_sensor[BGW_SENSOR_XACCEL].flags &= ~SENSOR_FINVALID;