Timing out DT's Blinking Led

[tazntex]

Thanks Bruce for your suggestion.
The idea I was toying with was to toggle the led for a few moments then time out and go to sleep, ...I then added to the main: the high led/low led to signal that it had returned from the ToggleLed1. Then sleep....

Thanks again for the reply.

[Bruce]

The reason your first version is WAY slow is because Timer1 shuts down during sleep. When the WDT wakes it from sleep, you only have 1 nop and the GOTO Main instruction cycles before it goes back to sleep.

So it takes Timer1 a really long time to increment to overflow with a prescaler of 1:8.

Just increment a variable in the interrupt handler, and check it for a certain value in Main. When it reaches the pre-set value, disable Timer1 and go to sleep.

You can re-enable it as needed.