Move next_wakeup_secs to local

[matopeto]

Please move next_wakeup_secs method to local directory for user/kindles (like fetch-dashboard.sh that cannot use next-wakeup binnary (eg. my kindle DXG). So users can implement own logick for next wakeup (e.g. hadcoded interval)

Maybe i will post PR for this issue later

[pascalw]

Hey thanks for the suggestion, that makes sense :-) If you can send a PR that would be great. If not I'll look into this myself later.

For the Kindle DXG you could probably compile the next-wakeup binary for armv5te. Not 100% sure, but the CPU seems to be ARM5 compatible so it might work. But indeed if all you need is a hardcoded interval then it's overkill.

Btw should you need a quickfix then you can replace the next-wakeup binary by an executable shell script, something like this:

#!/usr/bin/env sh
echo 3600 # or whatever interval you like

[matopeto]

@pascalw nice workaround without changing dash.sh :) and without compile custom binaries

My use case with my DXG is use it as the photo frame. DXG is without connectivity, so i similarly replace wait_for_wifi :)

So i am closing this issue :) Thanks :)