GTCFR_STP
clrsetbits_8(tmr->gtcfr, ~(GTCFR_STP(num) | GTCFR_RST(num)),
GTCFR_STP(num) | GTCFR_RST(num));
setbits8(tmr->gtcfr, GTCFR_STP(num));
clrbits8(tmr->gtcfr, GTCFR_STP(num));
setbits8(tmr->gtcfr, GTCFR_STP(num));