Scrolling issues in edit command

[Uwe Kleine-König]

On Tue, Apr 05, 2016 at 09:52:39AM +0200, Guillermo Rodriguez Garcia wrote:
> 2016-04-04 22:07 GMT+02:00 Uwe Kleine-König <u.kleine-koenig at pengutronix.de>:
> > Hello,
> >
> > On Wed, Mar 30, 2016 at 05:38:53PM +0200, Guillermo Rodriguez Garcia wrote:
> >> I am trying to setup Barebox on a SAMA5D3-Xplained board. I started
> >> with barebox-2016.03.0. So far things are looking good.
> >>
> >> I have found that I have problems in the 'edit' command, when trying
> >> to scroll using the arrow keys. Scrolling up inserts random "A"
> >> characters in the text, scrolling down inserts random "B" characters.
> >> I am using minicom as the terminal. I don't remember seeing this
> >> before with older versions of barebox on different boards.
> >
> > Can you instrument your serial driver to count/notice overflow events?
> 
> You mean in barebox, or in the host where I'm running minicom/microcom?

in barebox. Also, what is your rs232 hardware? Some usb-to-rs232
adapters are not reliable. The native 8250 ports on PCs are good ones I
think.

> > It's strange that you're missing chars 3-12 in a longer paste.
> >
> > Does it help to use
> >
> >         busybox microcom -d 10 ...
> >
> > ? (That is a feature that is missing from the "fullblown" microcom that
> > comes in the microcom package.)
> 
> Interesting. I tried that, the result is:
> 
> - Still the same problem when scrolling up and down in "edit" (A and B
> characters inserted)
> - Many more missing chars when pasting "Lorem ipsum.." (_in "edit"_).
> Here are three examples:
> 
> Loe Ismismyuye   iinatestis.
> Loe Ismismyuye  eiinatest uy.
> Loe Ismismyuye   iinatest uy.
> 
> - The very same text can be pasted perfectly in barebox's command
> line, no missing chars. The problem is only with the "edit" command.
> What makes "edit" different ?

That's strange. No idea here.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |