Matrix user forums

Hi Guys,

How do I execute a SLEEP instruction in an Attiny13 to make it power down.
Prior to executing the instruction I understand I need to set MCUCR register to 0x30 and can use a C block to do this ... but I am not sure what I need to do next to execute the actual instruction in Flowcode ?
Found reference to using sleep(); but I get a compiler error for this !

Can anyone please help ?

Iain

Hi Iain,

Need to (in a C block - before using sleep())

Martin

Hi Martin,

After a bit of investigation found that this worked in a C block

asm ("sleep");

iain

Good. I think the call to sleep(); just expands to a sleep instruction if you include the header file....

Hi Martin!

I suppose this also is for the Arduino, please, And how do I give it a " wakeupcall" again?

I have no experience with this feature.

Br Jorgen

See https://microchipdeveloper.com/8avr:avrsleep for a description..

The processor is basically woken by an interrupt or a reset. It can possibly wake itself by generating a wdt (watchdog timer) interrupt..

I posted a 1s flasher using the wdt here viewtopic.php?f=76&t=21832&hilit=wdt which worked well on the Arduino ATMega328 chip but sadly not on the AtMega8 chi

Martin

Thank you Martin.

Jorgen