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233 lines
6.4 KiB
233 lines
6.4 KiB
10 years ago
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.device attiny2313
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;běží na 8MHz, ckdiv8=1 (vypnuto)
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; A L I A S Y
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.def numL = r19
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.def numH = r20
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.def dispL = r21
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.def dispH = r22
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.def wNow = r23
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.def wOld = r24
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.def InitLoopN = r25
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; M A K R A
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.MACRO TimIntEnable
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ldi r16,(1<<OCIE1A)
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out TIMSK,r16 ;povolit interrupt pri Compare Match A
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.ENDMACRO
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.MACRO TimIntDisable
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ldi r16,0
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out TIMSK,r16 ;zakazat interrupt pri Compare Match A
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.ENDMACRO
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; Z A C A T E K P R O G R A M U
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.org 0x0000 ;RESET
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rjmp RESET ;skok na start po resetu
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.org 0x0004 ;TC1 Compare match A
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rjmp TIMER
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.org 0x0010
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; NASTAVENI PO RESETU
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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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; Nastaveni portu
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ldi r16,255 ;smer portu B - vystupni: segmenty (=katody)
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out DDRB,r16
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ser r16 ;r16=255 - vse na 1, segmenty zhasnuty
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out PORTB,r16
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ldi r16,0b00000011 ;smer portu D - PB0 a PB1 jsou vystupni - spinaji anody displeje. Zbytek: dratky.
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out DDRD,r16
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ldi r16,0b11111100 ;enable pullup, 0 na anody = zhasnout
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;dratky pripojeny na GND, s pullupy
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out PORTD,r16
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; 16bitovy citac - generator f=1Hz
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ldi r16,0 ;port se neovlivnuje citacem
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out TCCR1A,r16
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ldi r16,(1<<WGM12)|(1<<CS12) ;TC1 prescaler na 256 (8000000/256=31250), CTC mod
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out TCCR1B,r16
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ldi r16,0b01111010 ;Compare Match 1 A high
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ldi r17,0b00010010 ;Compare Match 1 A low (celkem 31250, overflow f=1Hz)
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out OCR1AH,r16 ;set high
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out OCR1AL,r17 ;set low
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TimIntDisable ;vypni casovac (makro)
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; Nastaveni promennych
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;cas 99
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ldi numL,9
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ldi numH,9
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;vychozi rozlozeni dratu
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in r16,PORTD
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andi r16, 0b11111100 ;ignorovat anody
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mov wOld, r16 ;nastaveni stareho rozlozeni dratu
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mov wNow, r16 ;nastaveni soucasneho rozlozeni dratu
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sei ;Global Interrupt Enable
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; INIT LOOP
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ldi InitLoopN, 0 ;cekej n intervalu
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ldi r18,60 ;delka intervalu v sekundach
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mov r17,r18 ;delka prvniho intervalu jako obecny interval
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;soucasny interval: r17, defaultni interval: r18.
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TimIntEnable ;zapni casovac (makro)
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InitLoop:
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;kontroluje se InitLoopN. snizovani zajistuje casovac.
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cpi InitLoopN,0
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brne InitLoop
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; HLAVNI PROGRAM
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TimIntDisable ;vypni casovac (makro) - skoncila uvodni smycka, zacina odpocitavani
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;nastaveni
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clr r16 ;vynuluj registry ovlivnene uvodnim cekanim
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clr r17
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clr r18
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TimIntEnable ;zacina hlavni program s casovacem.
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ser r16 ;255 na PORTB, vse zhasnuto
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out PORTB, r16
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loop:
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rjmp loop
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; r17 konvertuj do 7segmentovyho kodu pro displej se spol. anodou DECGAFB ---> r16
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dec7seg:
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clr r16 ;do r16 budeme ukladat vystup, v r17 je vstupni cislo 0-9
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cpi r17,9 ;je r17 = 9?
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brne dec7segN8 ;neni -> pokracuj s 8
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; DEChGAFB
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ldi r16, 0b01000000 ;katody DCGAFB na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN8:
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cpi r17,8 ;je r17 = 8?
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brne dec7segN7 ;neni -> pokracuj s 7
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; DEChGAFB
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ldi r16, 0b00000000 ;katody DECGAFB na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN7:
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cpi r17,7 ;je r17 = 7?
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brne dec7segN6 ;neni -> pokracuj s 6
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; DEChGAFB
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ldi r16, 0b11001010 ;katody CAB na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN6:
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cpi r17,6 ;je r17 = 6?
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brne dec7segN5 ;neni -> pokracuj s 5
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; DEChGAFB
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ldi r16, 0b00000001 ;katody DECGAF na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN5:
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cpi r17,5 ;je r17 = 5?
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brne dec7segN4 ;neni -> pokracuj s 4
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; DEChGAFB
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ldi r16, 0b01000001 ;katody DCGAF na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN4:
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cpi r17,4 ;je r17 = 4?
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brne dec7segN3 ;neni -> pokracuj s 3
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; DEChGAFB
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ldi r16, 0b11000100 ;katody CGFB na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN3:
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cpi r17,3 ;je r17 = 3?
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brne dec7segN2 ;neni -> pokracuj s 2
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; DEChGAFB
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ldi r16, 0b01000010 ;katody DCGAB na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN2:
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cpi r17,2 ;je r17 = 2?
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brne dec7segN1 ;neni -> pokracuj s 1
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; DEChGAFB
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ldi r16, 0b00100010 ;katody DEGAB na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN1:
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cpi r17,1 ;je r17 = 1?
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brne dec7segN0 ;neni -> pokracuj s 0
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; DEChGAFB
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ldi r16, 0b11001110 ;katody CB na 0; H = 0, ale bude prepsano pri vystupu
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rjmp dec7segReturn
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dec7segN0:
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; DEChGAFB
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ldi r16, 0b00001000 ;katody DECAFB na 0; H = 0, ale bude prepsano pri vystupu
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dec7segReturn:
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ret
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; TEST DRATU (nutno volat rucne)
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WireTest:
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in r16,PORTD
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andi r16, 0b11111100 ;odfiltrovat anody
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mov wNow, r16 ;nastaveni soucasneho rozlozeni dratu
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;test dratku
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cp wOld,wNow ;porovnej wOld a wNow
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brge WireTestReturn ;wOld >= wNow: nebyl prestrizen dratek, nebo byl nejaky spojen
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;dratek byl prestrizen
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mov wOld, wNow ;nastaveni
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;ODECTENI CASU
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cpi numH,3 ;jsou aspon 3 desitky?
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brlo WireTestLowTens ;nejsou-li ani 3 desitky, vynuluj vse a vybuchni
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subi numH,3 ;jinak odecti 3 desitky
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;nedoslo k vynulovani?
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brne WireTestReturn ;desitky > 0: odejdi bez vybuchu
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cpi numL,0 ;desitky = 0, kolik je jednotek?
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breq WireTestBum ;je-li 0 jednotek, vybuchni
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;0 desitek, n > 0 jednotek
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rjmp WireTestReturn ;0 desitek ale n > 0 jednotek, odejdi bez vybuchu
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WireTestLowTens:
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clr numL ;vymazat jednotky
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clr numH ;vymazat desitky
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WireTestBum:
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rcall BUM
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WireTestReturn:
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ret
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; B U M
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BUM:
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;nekonecna smycka, blikaji nuly
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TimIntDisable ;vypni casovac (makro)
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smycka:
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rjmp smycka
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; PRERUSENI OD CASOVACE f=1Hz
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rjmp loop ; aby se TIMER nevykonal mimo preruseni, kdyby procesor zabloudil
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TIMER: ; casovac ma frekvenci 1Hz
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cpi InitLoopN,0 ;je InitLoopN = 0?
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breq TIMERnormal ;Je-li InitLoopN = 0, pokracuj normalnim prerusenim
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; probiha uvodni cekani
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; test intervaloveho citace
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cpi r17,0 ;je r17 = 0?
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breq TIMERsnizitILN ;je-li r17 = 0, snizit InitLoopN: jdi na TIMERsnizitILN
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dec r17 ;jinak o 1 sniz r17 (intervalovy citac)
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;out PORTB,r17 ;DEBUG test r17
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rjmp TIMERreturn ;a odejdi
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TIMERsnizitILN:
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dec InitLoopN ;snizit InitLoopN
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mov r17,r18 ;nastaveni delky dalsiho intervalu
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rjmp TIMERreturn ;odejdi
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TIMERnormal:
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; STANDARTNI PRERUSENI (1s)
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sbi PINB,4 ;toogle PB4 (tecka na displeji)
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TIMERreturn:
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reti
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