> On 7 Feb 2018, at 15:50, Haojian Zhuang <haojian.zhu...@linaro.org> wrote:
> 
> Hi all,
> 
> I have an issue on tty terminal. I setup PL011 serial console as the
> tty terminal on HiKey platform. When it's built in debug mode, arrow
> key works well. When it's built in release mode, arrow key can't work.
> 
> For example, DOWN key is gotten in terminal with "~[B" value in debug
> build. DOWN key is gotten in terminal with "~" value in release build.
> These values are fetched by GetOneKeyFromSerial().
> 
> But I can't find any difference on PL011 serial driver between debug
> and release mode.
> 
> Do you have any idea on this?
> 
> 

You need to set the FIFO depth to 16 iirc
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