Ok, here goes
Code is attached in arduino formatting (as INO file). Code also references a couple LIBs but they should be in arduino program by default. This is literally all the code i have on this, soo...
Also attached is the schematic and rough board layout in EAGLE.
Posted by: MarkT
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We need to see your circuit to understand this, some of your code suggests you are clocking timer2's prescaler at 32768Hz, is this true and if so how?
To be honest, I have no idea what you just said. I am just trying to get timer2 to inturrupt every 8s from a 32.768 crystal. Most of my code was copied from sparkfuns example, so it should work, but as I said, hardware and software level inturrupts are not exactly my strongpoint.
Posted by: PaulS
Not working saves even more power? Just trying to eliminate possible areas of conflict.
Yep :D, well at least at the moment...
I'd check... I also don't see where you connect that ISR to that pin. The attachInterrupt() function is usually called to make an association.
I think this deos it
//Setup external INT0 interrupt
EICRA = (1<<ISC01); //Interrupt on falling edge
EIMSK = (1<<INT0); //Enable INT0 interrupt
Which pins would that be? What code, of yours, is supposed to respond to those interrupts?
Pins TOSC1 & TOSC2 if I got the names right. Just XTAL1 and XTAL2 on the schematic. This code is what is supposed to be run when it interrupts.
SIGNAL(TIMER2_OVF_vect){
seconds += 8; //We sleep for 8 seconds instead of 1 to save more power
//seconds++; //Use this if we are waking up every second
if(seconds > 59){
minutes++;
seconds = seconds - 59;
}
if(minutes > 59){
hours++;
minutes = minutes - 59;
}
BinaTime2.ino (28.4 KB)
Watch-v13.brd (60.6 KB)
Watch-v13.sch (164 KB)