Hi! > > > > >> >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 > > vt100 terminal. > > Ok. And has xterm (or other terminals) somehow fixed it? Should we > expect that some other terminals send something different for ESC >key?
Not really. Try it:
pavel@duo:~$ cat | hexdump -C
^[ahoj
00000000 1b 61 68 6f 6a 0a |.ahoj.|
00000006
> > Usually timeout is used for detection. 0x1b followed by delay is
> > escape key; 0x1b followed by [ is some other key.
>
> Any idea how long timeout should be used for this detection?
>
> Heinrich wrote in his patch that sequence of 0x1b 0x1b should be handled
> by escape key. Does it mean that we need to handle both 0x1b+timeout and
> also 0x1b+0x1b as a escape key? Or we should handle 0x1b+timeout or 0x1
> followed by any non '[' character as escape key?
Yes, that makes some sense. 10msec would be right value for the
timeout, I'd say.
> Anyway, this bootmenu was initially written for Nokia N900 (used on LCD
> display with integrated keyboard) and this device does not have ESC key.
> So I would like to have CTRL+C in bootmenu working independently of ESC
> key support.
Or maybe "q" is good choice for the bootmenu?
Best regards,
Pavel
--
http://www.livejournal.com/~pavelmachek
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