LMENV_VCC
sc->sc_sensor[LMENV_VCC].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_VCC].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_VCC].desc, "+Vcc",
sizeof(sc->sc_sensor[LMENV_VCC].desc));
case LMENV_VCC: