Author: Pavel Machek Date: To: Pali Rohár CC: Heinrich Schuchardt, maemo-leste, u-boot, Simon Glass, Thirupathaiah Annapureddy Subject: Re: [maemo-leste] [PATCH] bootmenu: Allow to quit it via CTRL+C
On Sat 2020-12-26 20:15:40, Pali Rohár wrote: > On Saturday 26 December 2020 20:10:10 Heinrich Schuchardt wrote:
> > Am 26. Dezember 2020 20:03:56 MEZ schrieb "Pali Rohár" <pali@???>:
> > >On Saturday 26 December 2020 19:44:23 Heinrich Schuchardt wrote:
> > >> Am 26. Dezember 2020 19:02:25 MEZ schrieb "Pali Rohár"
> > ><pali@???>:
> > >> >When CTRL+C is pressed interrupt bootmenu and jump into U-Boot
> > >console.
> > >> >As the last entry in bootmenu is always U-Boot console just choose
> > >the
> > >> >last
> > >> >entry when CTRL+C is pressed.
> > >> >
> > >> >It is useful when bootmenu is part of boot process and you want to
> > >> >interrupt boot process by scripts which control U-Boot (serial)
> > >> >console.
> > >>
> > >> Wouldn't the escape key be a better choice?
> > >
> > >I can add also escape key. But has escape key stable ANSI sequence
> > >which
> > >is needed to catch? If you tell me which bytes to catch (for escape
> > >key)
> > >I will add it.
> > 0x1b is Escape
> Does not work. 0x1b is not escape key. It is start of the ANSI escape
> sequence which matches also existing keys up and down.
Unfortunately, 0x1b _is_ escape key. That is long standing bug of
Usually timeout is used for detection. 0x1b followed by delay is
escape key; 0x1b followed by [ is some other key.