SNVS_LPSRTCLR
counter1 |= (uint64_t)RD4(sc, SNVS_LPSRTCLR) << (SBT_LSB);
counter2 |= (uint64_t)RD4(sc, SNVS_LPSRTCLR) << (SBT_LSB);
WR4(sc, SNVS_LPSRTCLR, (uint32_t)(sbt >> (SBT_LSB)));