SR_AACK_DIS_ACK
rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 1);
rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 0);
ret = atusb_write_subreg(atusb, SR_AACK_DIS_ACK, 1);
ret = atusb_write_subreg(atusb, SR_AACK_DIS_ACK, 0);