282 lines
4.8 KiB
NASM
Executable File
282 lines
4.8 KiB
NASM
Executable File
LIST P=18F4550, F=INHX32 ; Specify processor and hex format
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#include <p18f4550.inc>
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CONFIG FOSC = HS ; Use internal oscillator, RA6 as clock output
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CONFIG WDT = OFF ; Watchdog Timer off
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CONFIG LVP = OFF ; Low-Voltage Programming off
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CONFIG MCLRE = ON ; MCLR pin disabled, RE3 input enabled
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;CONFIG PBADEN = OFF
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ROTA1 EQU 0x01
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ROTA2 EQU 0x02
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ROTA3 EQU 0x04
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ROTA4 EQU 0x08
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ROTA5 EQU 0x10
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ROTA6 EQU 0x20
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R1 EQU 0x020
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R2 EQU 0x021
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R3 EQU 0x024
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CUENTA EQU 0x022
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CUENTA2 EQU 0x034
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TEMP EQU 0x23
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DISP0 EQU 0x30
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DISP1 EQU 0x31
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DISP2 EQU 0x32
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DISP3 EQU 0x33
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ORG 0x0000
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goto Start
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ORG 0x0008
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goto loop
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Start:
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; Initialize PORTB
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CLRF TRISD ; Set all PORTB pins as output
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CLRF LATD ; Clear PORTB outputs
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CLRF LATB
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BCF INTCON2, RBPU
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MOVLW 0xff
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MOVWF TRISB ; set port b to input
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movlw 0x0f
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movwf ADCON1
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clrf LATA
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clrf TRISA
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bsf RCON, IPEN ; enable priority modes
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bsf INTCON, RBIF ; RB Port change interrupt
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bsf INTCON, PEIE ; enable peripheral interrupts
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bsf INTCON, GIE ; enable global interrupts
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bsf INTCON2, RBIP ; rb to high priority
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clrf LATE
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clrf TRISE
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clrf CUENTA2
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loop:
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movf PORTB, W
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bcf INTCON, RBIF
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clrf CUENTA
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call splitDigit
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call Delay
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movf PORTB, W
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xorlw ROTA1
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btfsc STATUS, Z
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goto hexa ; cuenta 1
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xorlw ROTA2^ROTA1
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btfsc STATUS, Z
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goto decimal ; cuenta 2
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xorlw ROTA2^ROTA3
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btfsc STATUS, Z
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goto des ; cuenta 3 wip
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xorlw ROTA3^ROTA4
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btfsc STATUS, Z
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goto hexAsc
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xorlw ROTA4^ROTA5
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btfsc STATUS, Z
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goto bcdt
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xorlw ROTA5^ROTA6
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btfsc STATUS, Z
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goto hext
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goto loop
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hexa:
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call splitDigit
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call Delay
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incf CUENTA, F
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call Delay
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goto hexa
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des:
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clrf CUENTA
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clrf CUENTA2
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rl:
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call splitDigit
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call Delay
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incf CUENTA, W
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daw
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movwf CUENTA
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xorlw 0x60
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btfss STATUS, Z
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goto rl
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clrf CUENTA
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incf CUENTA2, W
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daw
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movwf CUENTA2
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xorlw 0x60
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btfsc STATUS, Z
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return
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goto rl
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decimal:
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call splitDigit
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call Delay
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incf CUENTA, W
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daw
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movwf CUENTA
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Call Delay
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goto decimal
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hexAsc:
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movlw 0xff
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movwf CUENTA
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rl2:
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call splitDigit
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call Delay
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decfsz CUENTA
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goto rl2
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goto hexAsc
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bcdt: ;; count to a thousand
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clrf CUENTA
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clrf CUENTA2
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co:
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call splitDigit
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call Delay
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incf CUENTA, W
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daw
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movwf CUENTA
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btfss STATUS, C
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goto co
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incf CUENTA2, W
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daw
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movwf CUENTA2
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btfss STATUS, C
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goto co
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return
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hext:
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clrf CUENTA
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clrf CUENTA2
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ht:
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call splitDigit
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call Delay
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incf CUENTA, W
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movwf CUENTA
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btfss STATUS, Z
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goto ht
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clrf CUENTA
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incf CUENTA2, W
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movwf CUENTA2
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btfss STATUS, Z
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goto ht
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return
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splitDigit:
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movf CUENTA, W
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andlw 0x0f
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movwf DISP0
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swapf CUENTA, W
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andlw 0x0f
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movwf DISP1
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movf CUENTA2, W
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andlw 0x0f
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movwf DISP2
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swapf CUENTA2, W
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andlw 0x0f
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movwf DISP3
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return
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disp_delay:
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movlw D'250'
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movwf R3
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disp_delay_inner:
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NOP
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NOP
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NOP
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NOP
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decfsz R3, F
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goto disp_delay_inner
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return
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sevensw:
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movlw high(sevenjmp)
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movwf PCLATH
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movf TEMP, W
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addwf TEMP, W
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addlw low(sevenjmp)
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btfsc STATUS, 0
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incf PCLATH, 1
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movwf PCL
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sevenjmp:
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retlw 3Fh
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retlw 06h
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retlw 5Bh
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retlw 4Fh
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retlw 66h
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retlw 6Dh
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retlw 7Dh
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retlw 07h ; siete
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retlw 7Fh ; ocho
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retlw 6Fh ; nueve
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retlw 77h ; A
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retlw 7Ch ; B
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retlw 39h ; C
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retlw 5Eh ; D
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retlw 79h ; E
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retlw 71h ; F
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; Delay subroutine (approx 500ms)
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Delay:
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MOVLW D'250' ; Outer loop count
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MOVWF R1
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Delay_Outer:
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MOVLW D'250' ; Inner loop count
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MOVWF R2
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Delay_Inner:
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NOP ; Do nothing (No Operation)
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NOP
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DECFSZ R2, F ; Decrement inner loop counter
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GOTO Delay_Inner ; Repeat inner loop
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;; Multiplex code
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call display
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DECFSZ R1, F ; Decrement outer loop counter
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GOTO Delay_Outer ; Repeat outer loop
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RETURN ; Return from delay
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display:
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clrf PORTD
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movff DISP0, TEMP
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call sevensw
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movwf PORTD
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movlw 0x04
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movwf PORTE
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call disp_delay
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clrf PORTD
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movff DISP1, TEMP
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call sevensw
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movwf PORTD
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movlw 0x02
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movwf PORTE
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call disp_delay
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clrf PORTD
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movff DISP2, TEMP
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call sevensw
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movwf PORTD
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movlw 0x01
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movwf PORTE
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call disp_delay
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clrf PORTD
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clrf PORTE
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movff DISP3, TEMP
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call sevensw
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movwf PORTD
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movlw 0x10
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movwf PORTA
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call disp_delay
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clrf PORTA
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return
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END ; End of program
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;todopic y aquihayapuntes
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