_LDCNT2R
unsigned long tmp = lcdc_read(priv, _LDCNT2R);
lcdc_write(priv, _LDCNT2R, tmp | LDCNT2R_DO);
lcdc_write(priv, _LDCNT2R, tmp & ~LDCNT2R_DO);
if (lcdc_read(priv, _LDCNT2R) & priv->ch[k].enabled)
lcdc_write(priv, _LDCNT2R, priv->ch[0].enabled | priv->ch[1].enabled);
lcdc_write(priv, _LDCNT2R, lcdc_read(priv, _LDCNT2R) | LDCNT2R_BR);
lcdc_wait_bit(priv, _LDCNT2R, LDCNT2R_BR, 0);