This repository has been archived on 2019-08-09. You can view files and clone it, but cannot push or open issues or pull requests.
s6-up-tp/TP3/TP32.asm

283 lines
4.3 KiB
NASM
Raw Normal View History

2017-05-19 05:49:51 +02:00
.equ PINA = 0x00 ; d<>finition des adresses des ports
.equ DDRA = 0x01
.equ PORTA = 0x02
.equ PINC = 0x06
.equ DDRC = 0x07
.equ PORTC = 0x08
.equ RAMEND = 0x21FF
.equ SPH = 0x3E ; initialisation de la pile
.equ SPL = 0x3D
.equ SREG = 0x3F
.equ TCCR0A = 0x24
.equ TCCR0B = 0x25
.equ TIMSK0 = 0x6E
.equ TIFR0 = 0x35
.equ ADMUX = 0x7C
.equ ADCSRB = 0x7B
.equ ADCSRA = 0x7A
.equ ADCH = 0x79
.equ ADCL = 0x78
.def d2 = r19
.def d1 = r20
.def d0 = r21
.def select = r22
.def temp = r23
.org 0x000
; Vecteur RESET
jmp debut
.org 0x002E ; Interruption du timer
jmp tm
.org 0x003A
jmp irqadc
.org 0x0080
codeAff:
.db 0b1111110, 0b001100
.db 0b0110111, 0b0011111
.db 0b1001101, 0b1011011
.db 0b1111011, 0b0001110
.db 0b1111111, 0b1011111
debut:
ldi r28, low(RAMEND)
ldi r29, high(RAMEND)
out SPL, r28
out SPH, r29
cli
; DDRA@IO <- 0xFF
LDI R16,0xFF
OUT DDRA,R16
; DDRC@IO <- 0xFF
LDI R16,0xFF
OUT DDRC,R16
; ADMUX <- 0b01100001
LDI R16,0b01100001
STS ADMUX,R16
; ADCSRB <- 0b00000000
LDI R16,0b00000000
STS ADCSRB,R16
; ADCSRA <- 0b11101111
LDI R16,0b11101111
STS ADCSRA,R16
; Timer toutes les 2 ms
; TCCR0A@IO <- 0x00
LDI R16,0x00
OUT TCCR0A,R16
; TCCR0B@IO <- 0x04
LDI R16,0x04
OUT TCCR0B,R16
; TIMSK0 <- 0x01
LDI R16,0x01
STS TIMSK0,R16
; TIFR0 <- 0x01
LDI R16,0x01
STS TIFR0,R16
sei
; d2 <- 1
LDI R16,1
STS d2,R16
; d1 <- 2
LDI R16,2
STS d1,R16
; d0 <- 3
LDI R16,3
STS d0,R16
; select <- 0b00100000
LDI R16,0b00100000
STS select,R16
boucle:
sleep
jmp boucle
irqadc:
; temp <- ADCH
LDS R16,ADCH
STS temp,R16
; d2 <- temp / 100
LDS R16,temp
LDI R17,100
SER R18
eti0:
INC R18
SUB R16,R17
BRCC eti0
MOV R16,R18
STS d2,R16
; d1 <- temp / 10 - (temp / 100) * 10
LDS R16,temp
LDI R17,10
SER R18
eti1:
INC R18
SUB R16,R17
BRCC eti1
MOV R16,R18
PUSH R16
LDS R16,temp
LDI R17,100
SER R18
eti2:
INC R18
SUB R16,R17
BRCC eti2
MOV R16,R18
LDI R17,10
MUL R16,R17
MOV R16,R0
MOV R17,R16
POP R16
SUB R16,R17
STS d1,R16
; d0 <- temp - temp/10*10
LDS R16,temp
PUSH R16
LDS R16,temp
LDI R17,10
SER R18
eti3:
INC R18
SUB R16,R17
BRCC eti3
MOV R16,R18
LDI R17,10
MUL R16,R17
MOV R16,R0
MOV R17,R16
POP R16
SUB R16,R17
STS d0,R16
reti
tm:
; PortC@IO <- select
LDS R16,select
OUT PortC,R16
; si select = 0b10000000 alors PortA@IO <- codeAff@ROM[d2]
LDS R16,select
PUSH R16
LDI R16,0b10000000
POP R17
CP R17,R16
BREQ eti4
CLR R16
RJMP eti5
eti4:
LDI R16,0x01
eti5:
TST R16
BREQ eti6
LDS R16,d2
LDI R30,low(codeAff<<1)
LDI R31,high(codeAff<<1)
CLR R17
ADD R30,R16
ADC R31,R17
LPM R16,Z
OUT PortA,R16
eti6:
; si select = 0b01000000 alors PortA@IO <- codeAff@ROM[d1]
LDS R16,select
PUSH R16
LDI R16,0b01000000
POP R17
CP R17,R16
BREQ eti7
CLR R16
RJMP eti8
eti7:
LDI R16,0x01
eti8:
TST R16
BREQ eti9
LDS R16,d1
LDI R30,low(codeAff<<1)
LDI R31,high(codeAff<<1)
CLR R17
ADD R30,R16
ADC R31,R17
LPM R16,Z
OUT PortA,R16
eti9:
; si select = 0b00100000 alors PortA@IO <- codeAff@ROM[d0]
LDS R16,select
PUSH R16
LDI R16,0b00100000
POP R17
CP R17,R16
BREQ eti10
CLR R16
RJMP eti11
eti10:
LDI R16,0x01
eti11:
TST R16
BREQ eti12
LDS R16,d0
LDI R30,low(codeAff<<1)
LDI R31,high(codeAff<<1)
CLR R17
ADD R30,R16
ADC R31,R17
LPM R16,Z
OUT PortA,R16
eti12:
lsl select
; si select = 0 alors select <- 0b00100000
LDS R16,select
PUSH R16
LDI R16,0
POP R17
CP R17,R16
BREQ eti13
CLR R16
RJMP eti14
eti13:
LDI R16,0x01
eti14:
TST R16
BREQ eti15
LDI R16,0b00100000
STS select,R16
eti15:
reti