TelnetEnabler.zip from here: http://www.mobileread.com/forums/attachment.php?attachmentid=108297&d=1373983679
unzip; it contains a file called KoboRoot.tgz. Copy
KoboRoot.tgz into the .kobo directory of your
Kobo when it is plugged into a PC as a USB drive.
Enable networking (for example, Wireless panel of the Settings page). Get device IP from the Device Information panel of the Settings page.
telnet; username root; no password.
ftp works too.
The nickel program (the main Kobo UI) will switch the wireless
off after a few minutes. Annoying.
killall -SIGSTOP nickel # stop execution
killall -SIGCONT nickel # resume it
zcat /etc/images/splash.raw.gz | /usr/local/Kobo/pickel showpic
Image format is raw 16-bit LE RGB565 800x600. See
https://github.com/drj11/pypng/blob/master/code/pngtokobo565
for a converter from PNG to this format.
wget (doesn't seem to support https):
wget -O - http://192.168.0.6:8000/golfer.raw |
/usr/local/Kobo/pickel showpic
nc:
# On Kobo:
nc -l -p 5555 > foo
# On laptop:
cat a.out | nc 192.168.0.10 5555
Cross compiling for arm7.
sudo apt-get install gcc-arm-linux-gnueabi
arm-linux-gnueabi-gcc foo.c
For compiling node (which uses floating point):
export AR=arm-linux-gnueabihf-ar
export CC=arm-linux-gnueabihf-gcc
export CXX=arm-linux-gnueabihf-g++
export LINK=arm-linux-gnueabihf-g++
./configure --prefix kobonode --without-snapshot --dest-cpu=arm --with-arm-float-abi=hard
# make && make install
# (you'll need to hack the #! line for npm)
Many people on the internet helped:
Useufl general hackery: http://www.chauveau-central.net/pub/KoboTouch/
Hints on using ffmpeg http://www.mobileread.com/forums/showpost.php?p=1752157&postcount=1