aw/pentabug
1
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Enabling timer 2 for LED testing

Browse Source
This commit is contained in:
bigalex 2012-08-11 21:08:50 +02:00
parent f2c95d9503
commit 7144b7d1d0
1 changed files with 22 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
firmware/main.c
View File

@ -48,7 +48,23 @@ static void init_leds(void)
DDRC |= (1 << PORTC0) | (1 << PORTC2) | DDRC |= (1 << PORTC0) | (1 << PORTC2) |
(1 << PORTC3) | (1 << PORTC1) ; (1 << PORTC3) | (1 << PORTC1) ;
/* initially one led is on */ /* initially one led is on */
PORTC = 1; PORTC = 0b00000101;
/*
* Timer 2
*/
/* set timer0 to CTC & prescaler 64 → 125kHz increment */
TCCR2A = (1 << WGM21);
TCCR2B = (1 << CS20) | (1 << CS21);
OCR2A = 6; /* TOP */
TCNT2 = 0;
/*enable interrupt*/
TIMSK2 |= (1<<OCIE2A);
return; return;
} }
@ -102,4 +118,8 @@ ISR(TIMER0_COMPA_vect)
/* calculate next analog sample value in synth mixer:*/ /* calculate next analog sample value in synth mixer:*/
OCR1B = synth_mix(); OCR1B = synth_mix();
} }
ISR(TIMER2_COMPA_vect)
{
//PORTC = 0b0000000;
}