Rockbox mail archive

• Next message: Björn Stenberg: "Re: Use SLEEP instruction for longer (?) runtime"
• Previous message: SeeSchloss: "Re: Rockbox and archos"
• In reply to: Uwe Freese: "Re[2]: Use SLEEP instruction for longer (?) runtime"
• Next in thread: Simon Elén: "Re: Use SLEEP instruction for longer (?) runtime"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

Uwe Freese wrote:
> Is it possible to write code like this:
>
> set_alarm(time);
> CPU_STANDBY();
> lcdout('now I'm on');
>
> and add it to the code that currently shuts down the device
> in apps/alarm_menu.c? Maybe the CPU stops execution after
> CPU_STANDBY and wakes up because of the alarm? Or am I thinking too
> simple?

It seems the alarm function can only cause an ordinary interrupt in a
unmodified recorder, and we need either an NMI or a RESET in order to leave
standby. We can ask the watchdog timer to send a RESET after 2 minutes,
which should be seldom enough to consume as little power as if we were in
standby the whole time.

--
Simon Elén

• Next message: Björn Stenberg: "Re: Use SLEEP instruction for longer (?) runtime"
• Previous message: SeeSchloss: "Re: Rockbox and archos"
• In reply to: Uwe Freese: "Re[2]: Use SLEEP instruction for longer (?) runtime"
• Next in thread: Simon Elén: "Re: Use SLEEP instruction for longer (?) runtime"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]