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