MCE_TIME_UNIT
units = DIV_ROUND_UP(timeout, MCE_TIME_UNIT);
ir->rc->timeout = (*hi << 8 | *lo) * MCE_TIME_UNIT;
rawir.carrier = (1000000u / MCE_TIME_UNIT) *
rawir.duration *= MCE_TIME_UNIT;
rc->rx_resolution = MCE_TIME_UNIT;
rc->min_timeout = MCE_TIME_UNIT;
MCE_TIME_UNIT / 1000;
irsample = txbuf[i] / MCE_TIME_UNIT;