SL11H_CTLREG1
sl811_write(sl811, SL11H_CTLREG1, SL11H_CTL1MASK_SE0);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
u8 t = sl811_read(sl811, SL11H_CTLREG1);
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);