Have a relase demo of "emacs" for esp8266
Help text, loaded by default
imacs - possibly the worlds smallest emacs clone!
(imacs said in Swedish sounds like [eeemacs])
(c) 2015 Jonas S Karlsson
It's an one file embeddable device emacs in
about 200+ lines c code.
Usage: ./imacs file.txt
Help
====
char forward: ^B back: ^F
delete forward: DEL back: ^D
pages down: ^V up: ESC V
file top: ESC < end: ESC >
lines prev: ^P next: ^N
lines beginning: ^A end: ^E
newline after: ^O before: RET
delete line after cursor: ^K
exit: ^X^C ^X^Z ^X^F
redraw: ^L
eval: ^X^E (it has integration with [esp-lisp](https://github.com/yesco/esp-lisp))
TAB indents cleverly, newline too
1. return will create new line and indent like previous line
2. tab will indent an empty line to the line above
3. tab pressed anywhere on a line that start with spaces will not
mess with it, just move cursor to beginning of text (after space)
4. another press on tab will then indent an additional 2 spaces each time
Why
===
Support simple editing on embedded systems ala ESP8266 wifi device,
on speeds like 115200 baud
Limitations
===========
- vt100 only
- no undo/redo
- no way to save a file!
- can't handle files with longer lines than terminal width
- tabs... get's funny
- some things rewrite whole screen!
- when you move till after the file end, it gets funny (TOFIX)
- big files should mess it up
- Not yet: no arrow keys, just as above and letters
just run linux> ./imacs
it'll compile and run!
if you use bigger screen, try
linux> export LINES
linux> export COLUMNS
then start again, it should use whole screen
In a directory:
- Get https://github.com/SuperHouse/esp-open-rtos (and all it wants)
- Build it.
This is temporary; we need to patch in for read/write to get readline interactive on device!
-
(temp) patch it for IO read using uart SuperHouse/esp-open-rtos#31
-
(temp) instructions on https://help.github.com/articles/checking-out-pull-requests-locally/
-
(temp) esp-open-rtos> git fetch origin pull/ID/head:uart
-
(temp) esp-open-rtos> git checkout uart
-
(temp) buid it...
These will now be in the same directory
Note: the build needs to do some special stuff for compiling to
a plain make will not work.
For the nodemcu instead:
-
./make
if no errors, flash it:
-
make flash
-
./mcu
to connect to it, then press ^L to redraw the screen!
Editor Binary BinSize KLOC Files
imacs imacs 18808 0.364 1
femto femto 43397 2.1k 11
atto atto 33002 1.9k 10