TWSI_CONTROL_START
val &= ~(TWSI_CONTROL_STOP | TWSI_CONTROL_START);
val &= ~(TWSI_CONTROL_STOP | TWSI_CONTROL_START);
twsi_control_set(sc, TWSI_CONTROL_START);
TWSI_WRITE(sc, sc->reg_control, sc->control_val | TWSI_CONTROL_START);
(send_start ? TWSI_CONTROL_START : 0));