Re: [avr-gcc-list] Sleep mode

[Mattias Svensson]

address@hidden wrote:
> Hello, I want to stop the execution of my program with a sleep mode. Is this
> correct??
>
> set_sleep_mode(SLEEP_MODE_IDLE);
>          while(1){
>               while(!bit) { 
>  	          sleep_mode()
>                  }
>                 bit=false;
>
> where bit is a flag modify by an interrupt handler
>
> SIGNAL(SIG_OVERFLOW0){  
> static int i=0;
> 	int a=h*7.2; 
>
>         i++;
>         if (i==a){
>                 bit=true;
>                 i=0;
>         }
> }
>
> The interrupt handler counts interrupts and when the number is correct sets the
> bit to resume the execution.

Actually you do not need the flag.
When you call the sleep_mode() function the mcu is put in the sleep mode 
you have configured. If you set sleep mode to "idle" then any interrupt 
will resume normal operation.
All you have to do is call the sleep_mode() function at a well chosen 
place in your code.

It is important to configure the device with the correct sleep mode, it 
should be "idle" in this case.
For information on how to do it, look at the datasheet for your device!

/Mattias S