Sleep Mode, Wakeups, and Screen Displays

[kkasmire]

OK, so I'm an iPhone jailbreaker since the 3. I run Debian. I like this stuff. I now have a Kindle Touch and like this e-reader concept (I accidentally bought a Fire, which is another discussion).

So, a list of ideas:

- can the Kindle RTC (real time clock) trigger a wake-up?
- wakeup from sleep mode to display a new screen image?
- say, once every few minutes, and update a date and clock display?
- and update a stock ticker?
- and update the weather?

Since the e-ink display is persistent, it reasons that a quick occasional wake-up to refresh the screen with new content is feasible.

Since the Kindle runs Linux, it seems the following code is straightforward:

- run a CRON job to wake up from sleep, or
- tell the RTC to wake up from sleep
- write a script to generate the "screensaver" image from data sources (time, weather, stock ticker)
- send the image to the screen
- go back to sleep

Does the "advertise" version of the Kindle changes screens when asleep? If so, the wake-up to refresh screen function is already built-in!

Anyone know if the Nook supports wake-up from sleep function?