CREATE_MASK
CREATE_MASK(SELTHRSH_POS, SELTHRSH_LEN);
CREATE_MASK(RINGSIZE_POS, RINGSIZE_LEN);
CREATE_MASK(RINGTYPE_POS, RINGTYPE_LEN);
CREATE_MASK(RINGMODE_POS, RINGMODE_LEN);
CREATE_MASK(RECOMTIMEOUTL_POS, RECOMTIMEOUTL_LEN);
ring_cfg[4] |= 0x7 & CREATE_MASK(RECOMTIMEOUTH_POS, RECOMTIMEOUTH_LEN);