63 lines
1.1 KiB
Plaintext
63 lines
1.1 KiB
Plaintext
.equ PINA = 0x00 ; définition des adresses des ports
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.equ DDRA = 0x01
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.equ PORTA = 0x02
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.equ PINB = 0x03
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.equ DDRB = 0x04
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.equ PORTB = 0x05
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.equ RAMEND = 0x21FF
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.equ SPH = 0x3E
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.equ SPL = 0x3D
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.equ SREG = 0x3F
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.equ ADMUX = 0x7C
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.equ ADCSRB = 0x7B
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.equ ADCSRA = 0x7A
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.equ ADCH = 0x79
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.equ ADCL = 0x78
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.def temp = r20
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.org 0x000
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; Vecteur RESET
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jmp debut
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.org 0x003A
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jmp irqadc
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.org 0x0080
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codeAff: ; Représentation des chiffres sur l'afficheur 7-segments
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.db 0b1111110, 0b001100, 0b0110111, 0b0011111, 0b1001101, 0b1011011, 0b1111011, 0b0001110, 0b1111111, 0b1011111
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debut:
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ldi r28, low(RAMEND)
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ldi r29, high(RAMEND)
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out SPL, r28
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out SPH, r29
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DDRA@IO <- 0xFF ; Port A (afficheur 7-segments) en sortie
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DDRB@IO <- 0xFF ; Port B (afficheur 7-segments) en sortie
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ADMUX <- 0b01100000 ; Sélection de l'ADC0
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ADCSRB <- 0b00000000 ; Free running mode
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ADCSRA <- 0b11101111 ; Activation des interruptions
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sei
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boucle:
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sleep
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jmp boucle
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irqadc:
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temp <- ADCH / 8
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PORTA@IO <- codeAff@ROM[temp/10]
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PORTB@IO <- codeAff@ROM[temp-(temp/10)*10] ; temp%10
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reti
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