Framebuffer for Kindle

proc/eink_fb

not available on K5

set Contrast

  echo 19 7 > /proc/eink_fb/update_display

  echo 1 > /proc/eink_fb/update_display

after any write to framebuffer

  echo 2 > /proc/eink_fb/update_display

cleans ghosts

Framebuffer Test

dd if=/dev/urandom of=/dev/fb0 bs=600 count=800
echo 1 > /proc/eink_fb/update_display

Progressbar

echo 55 > /sys/devices/platform/eink_fb.0/progressbar

See also

SDL