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- .def tmp = r16
- .def mask = r17
- .def counter = r18
- .cseg
- rjmp reset
- .org $002
- rjmp i0
- .org $004
- rjmp i1
- .org $00C
- rjmp dimaj
- .org $010
- rjmp dimaj
- reset:
- ldi tmp, high(RAMEND)
- out SPH, tmp
- ldi tmp, low(RAMEND)
- out SPL, tmp
- ldi tmp, 0xff
- out PORTA, tmp
- out DDRA, tmp
- ldi tmp, (1 << WGM10)
- out TCCR1A, tmp
- ldi tmp, (1 << WGM12) | (1 << CS10)
- out TCCR1B, tmp
- ldi tmp, 130
- out OCR1AL, tmp
- ldi tmp, (1 << OCIE1A) | (1 << TOIE1)
- out TIMSK, tmp
- ldi tmp, (1 << ISC11) | (1 << ISC01)
- out MCUCR, tmp
- ldi tmp, (1 << INT0) | (1 << INT1)
- out GICR, tmp
- sei
- ldi tmp, 0xff
- ldi mask, 0x01
- start:
- rjmp start
- dimaj:
- in tmp, PORTA
- eor tmp, mask
- out PORTA, tmp
- reti
- i0:
- in counter, OCR1AL
- cpi counter, 250
- brne i0_jump
- rjmp i0_end
- i0_jump:
- inc counter
- i0_end:
- out OCR1AL, counter
- reti
- i1:
- in counter, OCR1AL
- cpi counter, 1
- brne i1_jump
- rjmp i1_end
- i1_jump:
- dec counter
- i1_end:
- out OCR1AL, counter
- reti
- debounce:
- clr r19
- clr r20
- ldi r21, 4
- delay_loop:
- dec r19
- brne delay_loop
- dec r20
- brne delay_loop
- dec r21
- brne delay_loop
- push tmp
- ldi tmp, (1 << INTF0) | (1 << INTF1)
- out GIFR, tmp
- pop tmp
- ret
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