merged terminal/launchpad/web server

[lrizzo]

[updated 06-dec]

At

http://info.iet.unipi.it/~luigi/kind...indle-terminal

you can find a standalone application that merges launchpad

https://www.mobileread.com/forums/showthread.php?t=97636

and my former ajaxterm code (and a web server), implementing the ideas described in

https://www.mobileread.com/forums/sho...7&postcount=26

At this stage the code is experimental and meant for developers only.
Extract the archive, look at the source and possibly rebuild it to make sure you don't have surprises (there is a precompiled binary if you trust it). Copy myts.arm and the two .ini files in a directory on the kindle and manually start the program in background.

The program acts as "launchpad". In particular, the "Shift"-t sequence enters terminal mode, from which you can exit pressing "Left<" (the "Page Back" key in the upper left). Keys act as their label, you can remap Esc, Ctrl and SYM to generate symbols not on the keyboard. Right now ESC is the "Left>" key, "Aa" acts as CTRL, and "Back" and shift can be used to generate characters not on alphanumeric keys. More details in the README file with the archive.

Right now the terminal uses a CP-437 font of size 8x16 from FreeBSD, which allows you to see 75 chars in vertical mode. ANSI emulation is almost complete though a few issues remain with autowrap mode and colors.

Also, the KindleDX keys might need some tweaks -- see keydefs.ini

Restart on a signal is known not to work.

[h1uke]

it is not clear if you are still using the browser/javascript.
If so, why can't your application simply talk to the telnet daemon
which comes with usbNetwork package?

A practical alternative for that may be mimicking the code from telnetd which
establishes a link to system shell.

[lrizzo]

Originally Posted by h1uke

it is not clear if you are still using the browser/javascript.
If so, why can't your application simply talk to the telnet daemon
which comes with usbNetwork package?

A practical alternative for that may be mimicking the code from telnetd which
establishes a link to system shell.

the browser is not involved. This application grabs keypresses in the same way as launchpad, and does the rendering using /dev/fb
It is trivial to disable the http server part if one does not want it. i just included it in the package as the code that does the virtual screen emulation is the same used in the ajaxterm clone.

There is no point in talking to the telnet daemon when you can talk directly to the pseudo-tty (see function term_new() in terminal.c).
The telnet daemon gives you nothing more than that, and instead adds another layer of encoding on the input and output streams.

cheers
luigi

[JDShaffer]

Awesome work! i finally managed to get it working on my K2i.

But I'm having trouble understanding the keyboard mapping.

How can I get the : key so I can escape VI?

Thanks,
Jeffrey

[kacir]

Great job.

You are featured on hackaday.com
http://hackaday.com/2010/12/10/kindl...ss-activation/
Congratulations.

[janvanmaar]

The same problem here as JDShaffer had - the mapping of most special characters does not work. Only the Sym (physical Back) mapping works ( so I can type eg [] but not {} or () ). This is on Kindle3. I might have a closer look at the code later on...

[PoP]

Originally Posted by JDShaffer

Awesome work! i finally managed to get it working on my K2i.

But I'm having trouble understanding the keyboard mapping.

How can I get the : key so I can escape VI?

Thanks,
Jeffrey

I press simulataneously the symbol key, the shift key and the k key (BackShiftK) to get the : I then type q! and press the enter key to exit vi. I also "export TERM=vt220" prior to invoking vi.

[PoP]

Originally Posted by janvanmaar

The same problem here as JDShaffer had - the mapping of most special characters does not work. Only the Sym (physical Back) mapping works ( so I can type eg [] but not {} or () ). This is on Kindle3. I might have a closer look at the code later on...

The symbols depicted in the Keyboard Mapping Window (displayed when running the terminal) are shown in 4 quadrants per key.

You can enter all symbols by pressing simultaneously the following keys to position you in their respective quadrant:

On the top row,
ALt+Shift+Letter Shift+Back+Letter
Alt+Letter Back+Letter

On the other two rows,
Shift+Letter Shift+Back+Letter
Letter Back+Letter

Hope this helps.

[PoP]

Originally Posted by lrizzo

[updated 06-dec]
...
At this stage the code is experimental and meant for developers only.
...

Thanks for your great application Luigi.

Whenever I enter an invalid hotkey (e.g. not present in the launchpad.ini file) the launchpad program reports the unknown sequence (see 3rd line in my console log below) but stops interpreting any further hotkey. The web server part still works at that point but I anyway have to kill and restart myts.arm manualy for the launchpad part to start reinterpreting hotkeys. Am I missing something.


74461.071 [execute_action 711] start terminal 1 got 0x4b160
74463.361 [curterm_end 822] exit from terminal mode
74476.161 [call_hotkey 809] Unknown hotkey sequence entered len 1:

[janvanmaar]

I get it know - it works. Thanks, PoP!

[lrizzo]

Originally Posted by PoP

Thanks for your great application Luigi.

Whenever I enter an invalid hotkey (e.g. not present in the launchpad.ini file) the launchpad program reports the unknown sequence (see 3rd line in my console log below) but stops interpreting any further hotkey. The web server part still works at that point but I anyway have to kill and restart myts.arm manualy for the launchpad part to start reinterpreting hotkeys. Am I missing something.


74461.071 [execute_action 711] start terminal 1 got 0x4b160
74463.361 [curterm_end 822] exit from terminal mode
74476.161 [call_hotkey 809] Unknown hotkey sequence entered len 1:

i have seen myts.arm stop parsing sequences, but have not investigated
the bug in detail. Your analysis is very interesting, let me try to replicate
the bug and see if we can fix it.

thanks
luigi

[PoP]

Originally Posted by lrizzo

[updated 06-dec]
...
Right now the terminal uses a CP-437 font of size 8x16 from FreeBSD, which allows you to see 75 chars in vertical mode.
...

Luigi, just FYI. I came across this fixedc.fon CP437 6x13 font at http://www.chiark.greenend.org.uk/~sgtatham/fonts/ it is a (small but readable) font you might want to consider for 80 columns terminal display in Kindle Portrait mode.

[lynus]

hi,thanks for your great job.
i came across a problem:when i press <Alt>+<Shift>+u,in order to input &,and the screan came out &*,two symbols.
and i press <Alt>+<Shift>+i,the result is &*,too.
any solution?

[PoP]

Originally Posted by lynus

hi,thanks for your great job.
i came across a problem:when i press <Alt>+<Shift>+u,in order to input &,and the screan came out &*,two symbols.
and i press <Alt>+<Shift>+i,the result is &*,too.
any solution?

I concur. Till the bug gets fixed my bypass solution would be to generate the two symbols &* and DELete the one we don't intend.

[h1uke]

Originally Posted by PoP

Till the bug gets fixed

unfortunately, that's not a software bug, but a design flaw.
The "Alt" keyboard key behaves in a special way.
While all other keys generate usual linux "press" and "release"
input message, this key doesn't generate anything when used alone.
If used in a combination with the most other keys -- doesn't matter sequentially
or simultaneously -- four input events are generated:

• "Alt" pressed
• "key" pressed
• "key" released
• "Alt" released

But, the upper row keys, i.e. QWERTYUIOP combined with the "Alt"
do non produce Alt/ event sequences like shown above,
they simulate numbers instead. For example, pressing and releasing Alt/Q causes
the following input messages to be generated:

• "1" pressed
• "1" released

So, by design it is not possible to enter the Alt/Q .. Alt/P sequences from
the Kindle keyboard. This is true at least for K3W and KDXG models.