HDSPM_QS_DoubleWire
if (hdspm->control_register & HDSPM_QS_DoubleWire)
hdspm->control_register &= ~(HDSPM_QS_DoubleWire | HDSPM_QS_QuadWire);
hdspm->control_register |= HDSPM_QS_DoubleWire;
hdspm->control_register & HDSPM_QS_DoubleWire?