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132 lines
3.1 KiB
132 lines
3.1 KiB
10 years ago
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;Kostka pro attiny13
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;sestupna hrana impulzu na PB0 spousti kostku, vzestupna hrana spousti zpomalovani
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;kostka se zastavi na nahodnem cisle.
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;segmenty:
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; PB2 PB3
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; PB4 PB1 PB4
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; PB3 PB2
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; diody na spolecne noze maji kazda svuj odpor. muze byt pole odporu
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.device attiny13
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.def i=r20 ;prvni citac, cita jen pro zpomaleni
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.def j=r21 ;druhy citac, cita az do TOP, pak se oba vynulujou
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.def top=r22 ;maximalni hodnota pro citac j -> vynulovani a dalsi faze
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.def faze=r23 ;faze kostky. jsou zde cisla 0-5
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.def plus=r24 ;prirustek v dobe cekani na timer overflow - vzdy se inkrementuje
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.org 0x0000 ;RESET
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rjmp RESET ;skok na start po resetu
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.org 0x0006 ;TC0 overflow A
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rjmp CASOVAC
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.org 0x0010
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RESET:
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ldi r16,low(RAMEND) ;nastavi stack pointer
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out SPL,r16
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cli ;zakazat vsechna preruseni
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ldi r16,0b11111110 ;smer pinu
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out DDRB,r16
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ldi r16,1 ;PullUpy
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out PORTB,r16
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ldi r16,(1<<CS01)|(1<<CS00) ;TC0 prescaler na 64
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out TCCR0B,r16 ;4800000/64=75000Hz
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ldi r16,(1<<WGM01) ;TC0 je v rezimu CTC
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out TCCR0A,r16
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ldi r16,75 ;Compare Match 0 A je 75
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out OCR0A,r16 ;75000/75=1000Hz interrupt
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in r16, TIMSK0 ;povolit interrupt od preteceni
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ori r16, (1<<OCIE0A)
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out timsk0,r16
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clr i ;nastavime pocatecni hodnoty
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clr j
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ldi top,2
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ldi faze,0
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ldi plus,1
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sei ;Global Interrupt Enable
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LOOP:
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in r16,PINB ;kontrola jestli je PINB0 vypnutej (stisknuto)
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andi r16, 1
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sbrc r16, 0
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rjmp LOOP ;NE -> jdi na loop
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ldi top,1 ;ANO -> nastavit top na 1 a vymazat citace
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ldi plus,1
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clr i
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clr j
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CEKANI:
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ldi top,3 ;cekame na uvolneni, zatim se prepina s top=2
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ldi plus,1
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in r16,PINB ;kontrola jestli je PINB0 zapnutej (pusteny tlacitko)
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andi r16, 1
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sbrs r16, 0
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rjmp CEKANI
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ldi top,1
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ldi plus,1
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clr i
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clr j
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rjmp LOOP ;skok na loop
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CASOVAC:
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cpi top,50 ;porovnam top s 50, kdyz vetsi nebo rovno
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brge CASEND ;tak se dal nepocita - preskok na konec
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inc i ;i++
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cpi i,8 ;je i == 8 ?
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brne CASEND ; ne -> konec, citam dal
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clr i ;i=0
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inc j ;j++
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cp j,top ;je j == top?
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brne CASEND ; ne -> konec, citam dal
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add top,plus ;k top prictu plus
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inc plus ;a plus zvysim o 1
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clr i ;vymazu pomocne
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clr j
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inc faze ;dalsi faze kostky
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cpi faze,6 ;je faze 6?
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brne VYBER ; neni -> skok na VYBER
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ldi faze,0 ; je -> nuluju fazi
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VYBER: cpi faze,0 ;podminene se vybere, co se ma zobrazit
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breq F0
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cpi faze,1
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breq F1
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cpi faze,2
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breq F2
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cpi faze,3
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breq F3
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cpi faze,4
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breq F4
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cpi faze,5
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breq F5
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F0: ldi r16,0b00000011
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out PORTB,r16
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rjmp CASEND
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F1: ldi r16,0b00000101
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out PORTB,r16
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rjmp CASEND
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F2: ldi r16,0b00001011
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out PORTB,r16
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rjmp CASEND
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F3: ldi r16,0b00001101
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out PORTB,r16
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rjmp CASEND
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F4: ldi r16,0b00001111
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out PORTB,r16
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rjmp CASEND
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F5: ldi r16,0b00011101
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out PORTB,r16
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CASEND: ;navrat z preruseni
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reti
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