#define __SFR_OFFSET 0
#include <avr/io.h>

.include "timer.inc"
;.include "bpm.inc"
;.include "midi.inc"
;.include "led.inc"
.global main

main:
    ;cbi        DDRB,       PB1         ; Set EC11 clockwise on PB5 as input
    ;cbi        DDRB,       PB2         ; Set EC11 counter-clockwise on PB3 as input
    ;cbi        DDRB,       PB5         ; Set EC11 button (555 square wave) on PB4 as input
    ldi         r26,        60          ; Default BPM //TODO: save to eeprom not register, on runtime also ldi on r24 register

    rcall       timer0_ld
    rcall       timer1_ld


; interrupts:
;   button (tap tempo loop) tap_tempo:
;   encoder (increase/decrease tempo by one) incr_temp: , decr_temp:
; timer 1
;
; otherwise start from default bpm 60 (r26)

; loop: calculate tempo (high priority!) and save, led blinking, segment led writing
loop:
    ldi         r24,        30          ; Load current BPM to register //NOTE: hardcoded temporary
                                        ; TODO: compare two registers (current bpm and previous bpm)
    rcall       tempo_calc              ; CHANGE: if BPM changed then rcall BPM calculation function else skip because ticks tempo is the value already in [OCR1C]
                                        ; if this BPM != previous BPM then load this to another register (will be used as the 'previous register')

    ; final result stored in OCR1C as ticks

    ; TODO: look if there are alternatives to rcall

    ;rcall      midi_send       ; Send MIDI ping

    rcall       blink_led
    in          r16,        TIFR0       ; Check timer0 status
    sbrc        r16,        OCF0A       ; Skip stop_blink if clear
    rcall       stop_blink



    ;rcall      segment_led             ; Output current BPM to 3-digit 7-segment LED [r24]

    rjmp        loop                    ; Loopback