LCD_FLAG_F
priv->flags &= ~LCD_FLAG_F;
priv->flags |= LCD_FLAG_F;
((hdc->hd44780_common_flags & LCD_FLAG_F) ?
((hdc->hd44780_common_flags & LCD_FLAG_F) ?
hdc->hd44780_common_flags |= LCD_FLAG_F;
hdc->hd44780_common_flags &= ~LCD_FLAG_F;