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Enable interrupt on INT0

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Erick
2026-01-09 13:47:45 +01:00
parent 12a61f1327
commit 447865df4e
1 changed files with 6 additions and 1 deletions
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src/clockinator.S
+6 -1
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@@ -9,7 +9,7 @@
.org 0x0000 ; RESET Vector .org 0x0000 ; RESET Vector
rjmp main rjmp main
.org 0x0002 ; INT0 button interrupt (tap tempo) .org 0x0002 ; INT0 button interrupt (tap tempo)
;rjump tap_tempo --> should have timer0_start --> if timer0_overflow_count=0 start timer (?) rjmp tap_tempo_isr
.org 0x0004 ; TIMER0 overflow .org 0x0004 ; TIMER0 overflow
rjmp timer0_isr rjmp timer0_isr
.org 0x0006 ; TIMER1_COMPA .org 0x0006 ; TIMER1_COMPA
@@ -44,6 +44,11 @@ main:
cbi DDRB, PB2 ; Set EC11 button (555 square wave) on PB2 as input cbi DDRB, PB2 ; Set EC11 button (555 square wave) on PB2 as input
sbi PORTB, PB2 ; Enable pull-up on PB2 sbi PORTB, PB2 ; Enable pull-up on PB2
ldi r16, (1<<ISC01) | (0<<ISC00)
out MCUCR, r16 ; ISC01=1, ISC00=0 → falling edge
ldi r16, (1<<INT0)
out GIMSK, r16 ; Enable external interrupt INT0
;ldi r26, 60 ; Default BPM //TODO: save to eeprom not register, on runtime also ldi on r24 register ;ldi r26, 60 ; Default BPM //TODO: save to eeprom not register, on runtime also ldi on r24 register
; Setup general registers and global variables ; Setup general registers and global variables