50 lines
1.8 KiB
ArmAsm
50 lines
1.8 KiB
ArmAsm
#define __SFR_OFFSET 0
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#include <avr/io.h>
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.include "timer.inc"
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;.include "bpm.inc"
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;.include "midi.inc"
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;.include "led.inc"
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.global main
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main:
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;cbi DDRB, PB1 ; Set EC11 clockwise on PB5 as input
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;cbi DDRB, PB2 ; Set EC11 counter-clockwise on PB3 as input
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;cbi DDRB, PB5 ; Set EC11 button (555 square wave) on PB4 as input
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ldi r26, 60 ; Default BPM //TODO: save to eeprom not register, on runtime also ldi on r24 register
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rcall timer0_ld
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rcall timer1_ld
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; interrupts:
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; button (tap tempo loop) tap_tempo:
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; encoder (increase/decrease tempo by one) incr_temp: , decr_temp:
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; timer 1
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;
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; otherwise start from default bpm 60 (r26)
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; loop: calculate tempo (high priority!) and save, led blinking, segment led writing
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loop:
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ldi r24, 30 ; Load current BPM to register //NOTE: hardcoded temporary
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; TODO: compare two registers (current bpm and previous bpm)
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rcall tempo_calc ; CHANGE: if BPM changed then rcall BPM calculation function else skip because ticks tempo is the value already in [OCR1C]
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; if this BPM != previous BPM then load this to another register (will be used as the 'previous register')
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; final result stored in OCR1C as ticks
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; TODO: look if there are alternatives to rcall
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;rcall midi_send ; Send MIDI ping
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rcall blink_led
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in r16, TIFR0 ; Check timer0 status
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sbrc r16, OCF0A ; Skip stop_blink if clear
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rcall stop_blink
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;rcall segment_led ; Output current BPM to 3-digit 7-segment LED [r24]
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rjmp loop ; Loopback
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