Code:
PROCESSOR 16F84
INCLUDE P16F84.INC
RADIX DEC
__IDLOCS H'0000'
__CONFIG _CP_OFF & _PWRTE_ON & _WDT_ON & _XT_OSC
; Diverses
ZERO EQU Z ; ZERO-Flag
CARRY EQU C ; CARRY-Flag
; Variable
SYS_WSAV = 12 ; located in Bank 0, 1
SYS_SSAV = 13 ; located in Bank 0, 1
TR1 = 14 ; located in Bank 0, 1
TR1_HI = 15 ; located in Bank 0, 1
S4 = 16 ; located in Bank 0, 1
ZV1 = 17 ; located in Bank 0, 1
ZV1_HI = 18 ; located in Bank 0, 1
ZV1_FD = 19 ; located in Bank 0, 1
SYS_TMP1 = 20 ; located in Bank 0, 1
S0 = 21 ; located in Bank 0, 1
S3 = 22 ; located in Bank 0, 1
S1 = 23 ; located in Bank 0, 1
S2 = 24 ; located in Bank 0, 1
ZV2 = 25 ; located in Bank 0, 1
ZV2_FD = 26 ; located in Bank 0, 1
RAM = 27 ; located in Bank 0, 1
ERRORLEVEL -302 ; disable warning (Bankswitching)
ERRORLEVEL -306 ; disable warning (Pageswitching)
;****************************************
;Programmanfang
;****************************************
ORG 0
CLRF STATUS ; switch to RAM-Bank 0
MOVLW HIGH SYS_INIT ; set ROM-Bank
MOVWF PCLATH
GOTO SYS_INIT
;****************************************
;Interrupt-Adress
;****************************************
MOVWF SYS_WSAV ; Register sichern
SWAPF STATUS,W
CLRF STATUS ; BANK0
MOVWF SYS_SSAV
INCFSZ TR1,F
GOTO SYS_INT_LABEL_0
INCF TR1_HI,F
SYS_INT_LABEL_0
BCF INTCON,T0IF ; Interrupt quitieren
EXITINT
SWAPF SYS_SSAV,W ; Register zurück
MOVWF STATUS
SWAPF SYS_WSAV,F
SWAPF SYS_WSAV,W
RETFIE ; RETurn From Interrupt and Enable GIE
;****************************************
; Subroutines
;****************************************
;****************************************
; Tables
;****************************************
;****************************************
;Initialisierung
;****************************************
SYS_INIT
MOVLW B'00100000'
MOVWF INTCON
; Ausgangs-Pegel setzen, bevor die Richtung gesetzt wird
BCF STATUS,RP0 ; Bank 0
MOVLW B'00000000'
MOVWF PORTA
MOVLW B'00000000'
MOVWF PORTB
MOVLW 15
BSF STATUS,RP0 ; Bank 1
MOVWF OPTION_REG
; Richtung setzen
MOVLW B'11111111'
MOVWF TRISA
MOVLW B'00000000'
MOVWF TRISB
; init var
CLRF SYS_WSAV
CLRF SYS_SSAV
CLRF TR1
CLRF TR1_HI
CLRF S4
CLRF ZV1
CLRF ZV1_HI
CLRF ZV1_FD
CLRF SYS_TMP1
CLRF S0
CLRF S3
CLRF S1
CLRF S2
CLRF ZV2
CLRF ZV2_FD
BCF STATUS,RP0 ; Bank 0
CLRF TMR0
BCF INTCON,T0IF
BSF INTCON,GIE ; Interrupt freigeben
;**********************************
;******* Haupt-Programm ***********
;**********************************
MAIN
CLRWDT
;***************************************************
; Timer -> TR1
;***************************************************
MOVLW 0 ; Test auf >=
SUBWF TR1_HI,W ;F-W -> W
BTFSS STATUS,CARRY
GOTO LABEL_TR1_ENDE
MOVLW 195
SUBWF TR1,W ;F-W -> W
BTFSS STATUS,CARRY
GOTO LABEL_TR1_ENDE
LABEL_TR1_RESET
CLRF TR1 ; reset time
CLRF TR1_HI ; reset time
LABEL_TR1_SET ; toggel output
BTFSC S4,0
GOTO LABEL_TR1_CLR
BSF S4,0
GOTO LABEL_TR1_ENDE
LABEL_TR1_CLR
BCF S4,0
LABEL_TR1_ENDE
;***************************************************
; Zähler -> ZV1
;***************************************************
BTFSS S4,1 ; Reset ?
GOTO LABEL_ZV1_COUNT
CLRF ZV1
CLRF ZV1_HI
GOTO LABEL_ZV1_SETOUT
LABEL_ZV1_COUNT
; Test auf positive Flanke
BTFSS S4,0
GOTO LABEL_ZV1_SETFD
BTFSC ZV1_FD,0
GOTO LABEL_ZV1_SETFD
BSF ZV1_FD,0
BTFSC S4,2 ; Vorwärts oder Rückwärts ?
GOTO LABEL_ZV1_BACKWARD
INCFSZ ZV1,F
GOTO LABEL_ZV1_SETOUT
INCF ZV1_HI,F
GOTO LABEL_ZV1_SETOUT
LABEL_ZV1_BACKWARD
DECF ZV1,F
INCFSZ ZV1,W
GOTO LABEL_ZV1_SETOUT
DECF ZV1_HI,F
LABEL_ZV1_SETOUT
LABEL_ZV1_SETFD
; Test auf negative Flanke
BTFSC S4,0
GOTO LABEL_ZV1_EXIT
BCF ZV1_FD,0
LABEL_ZV1_EXIT
;***************************************************
; Schmitt-Trigger 8-Bit -> ST1
;***************************************************
BTFSC S4,1 ; Ausgang gesetzt ?
GOTO LABEL_ST1_MH ; dann mit Hysterese ?
MOVLW 8
GOTO LABEL_ST1_TEST
LABEL_ST1_MH
MOVLW 8
LABEL_ST1_TEST
SUBWF ZV1,W
BTFSS STATUS,CARRY
GOTO LABEL_ST1_RESET
BSF S4,1 ; if greater or equal
GOTO LABEL_ST1_ENDE
LABEL_ST1_RESET
BCF S4,1 ; if less
LABEL_ST1_ENDE
;***************************************************
; Unterprogramm PRG1 aufrufen
;***************************************************
MOVFW ZV1
CALL PRG1
MOVWF S0
;***************************************************
; Multiplexer -> MX1
;***************************************************
CLRF SYS_TMP1
MOVFW ZV2
BTFSS STATUS,ZERO
GOTO LABEL_MX1_CHECKCONTROL1
MOVFW S0
MOVWF S3
GOTO LABEL_MX1_END
LABEL_MX1_CHECKCONTROL1
INCF SYS_TMP1,F
MOVFW ZV2
SUBWF SYS_TMP1,W
BTFSS STATUS,ZERO
GOTO LABEL_MX1_CHECKCONTROL2
MOVFW S1
MOVWF S3
GOTO LABEL_MX1_END
LABEL_MX1_CHECKCONTROL2
INCF SYS_TMP1,F
MOVFW ZV2
SUBWF SYS_TMP1,W
BTFSS STATUS,ZERO
GOTO LABEL_MX1_CHECKCONTROL3
MOVFW S2
MOVWF S3
GOTO LABEL_MX1_END
LABEL_MX1_CHECKCONTROL3
LABEL_MX1_END
;***************************************************
; Unterprogramm PRG2 aufrufen
;***************************************************
MOVFW ZV1
CALL PRG2
MOVWF S1
;***************************************************
; GND
;***************************************************
BCF S4,2 ; immer Low
;***************************************************
; UND - Gatter -> UG1
;***************************************************
LABEL_UG1_1
BTFSS S4,3
GOTO LABEL_UG1_FALSE
LABEL_UG1_2
BTFSS S4,4
GOTO LABEL_UG1_FALSE
LABEL_UG1_TRUE
BSF S4,5
GOTO LABEL_UG1_ENDE
LABEL_UG1_FALSE
BCF S4,5
LABEL_UG1_ENDE
;***************************************************
; Unterprogramm PRG3 aufrufen
;***************************************************
MOVFW ZV1
CALL PRG3
MOVWF S2
;***************************************************
; Verteiler -> BV1
;***************************************************
BTFSC S3,0
GOTO LABEL_BV1_0
BCF STATUS,RP0 ; Bank 0
BCF PORTB,0
GOTO LABEL_BV1_0_END
LABEL_BV1_0
BCF STATUS,RP0 ; Bank 0
BSF PORTB,0
LABEL_BV1_0_END
;**********************************************
BTFSC S3,1
GOTO LABEL_BV1_1
BCF PORTB,1
GOTO LABEL_BV1_1_END
LABEL_BV1_1
BSF PORTB,1
LABEL_BV1_1_END
;**********************************************
BTFSC S3,2
GOTO LABEL_BV1_2
BCF PORTB,2
GOTO LABEL_BV1_2_END
LABEL_BV1_2
BSF PORTB,2
LABEL_BV1_2_END
;**********************************************
BTFSC S3,3
GOTO LABEL_BV1_3
BCF PORTB,3
GOTO LABEL_BV1_3_END
LABEL_BV1_3
BSF PORTB,3
LABEL_BV1_3_END
;**********************************************
BTFSC S3,4
GOTO LABEL_BV1_4
BCF PORTB,4
GOTO LABEL_BV1_4_END
LABEL_BV1_4
BSF PORTB,4
LABEL_BV1_4_END
;**********************************************
BTFSC S3,5
GOTO LABEL_BV1_5
BCF PORTB,5
GOTO LABEL_BV1_5_END
LABEL_BV1_5
BSF PORTB,5
LABEL_BV1_5_END
;**********************************************
BTFSC S3,6
GOTO LABEL_BV1_6
BCF PORTB,6
GOTO LABEL_BV1_6_END
LABEL_BV1_6
BSF PORTB,6
LABEL_BV1_6_END
;**********************************************
BTFSC S3,7
GOTO LABEL_BV1_7
BCF PORTB,7
GOTO LABEL_BV1_7_END
LABEL_BV1_7
BSF PORTB,7
LABEL_BV1_7_END
;**********************************************
;***************************************************
; Zähler -> ZV2
;***************************************************
BTFSS S4,5 ; Reset ?
GOTO LABEL_ZV2_COUNT
CLRF ZV2
GOTO LABEL_ZV2_SETOUT
LABEL_ZV2_COUNT
; Test auf positive Flanke
BCF STATUS,RP0 ; Bank 0
BTFSS PORTA,0
GOTO LABEL_ZV2_SETFD
BTFSC ZV2_FD,0
GOTO LABEL_ZV2_SETFD
BSF ZV2_FD,0
BTFSC S4,6 ; Vorwärts oder Rückwärts ?
GOTO LABEL_ZV2_BACKWARD
INCF ZV2,F
GOTO LABEL_ZV2_SETOUT
LABEL_ZV2_BACKWARD
DECF ZV2,F
LABEL_ZV2_SETOUT
; Output Q0
BTFSS ZV2,0
GOTO LABEL_ZV2_SETOUT0
BSF S4,3
GOTO LABEL_ZV2_SETOUT0_END
LABEL_ZV2_SETOUT0
BCF S4,3
LABEL_ZV2_SETOUT0_END
; Output Q1
BTFSS ZV2,1
GOTO LABEL_ZV2_SETOUT1
BSF S4,4
GOTO LABEL_ZV2_SETOUT1_END
LABEL_ZV2_SETOUT1
BCF S4,4
LABEL_ZV2_SETOUT1_END
LABEL_ZV2_SETFD
; Test auf negative Flanke
BCF STATUS,RP0 ; Bank 0
BTFSC PORTA,0
GOTO LABEL_ZV2_EXIT
BCF ZV2_FD,0
LABEL_ZV2_EXIT
;***************************************************
; GND
;***************************************************
BCF S4,6 ; immer Low
;****************************************
GOTO MAIN
ORG 1010
;***************************************************
;Table -> PRG1
;***************************************************
PRG1
MOVWF SYS_TMP1
MOVLW HIGH PRG1_WERTE
MOVWF PCLATH
MOVFW SYS_TMP1
ADDWF PCL,F
PRG1_WERTE
RETLW 1
RETLW 2
RETLW 4
RETLW 8
RETLW 16
RETLW 32
RETLW 64
RETLW 128
RETLW 128
ORG 996
;***************************************************
;Table -> PRG2
;***************************************************
PRG2
MOVWF SYS_TMP1
MOVLW HIGH PRG2_WERTE
MOVWF PCLATH
MOVFW SYS_TMP1
ADDWF PCL,F
PRG2_WERTE
RETLW 129
RETLW 66
RETLW 36
RETLW 24
RETLW 36
RETLW 66
RETLW 129
RETLW 129
RETLW 129
ORG 982
;***************************************************
;Table -> PRG3
;***************************************************
PRG3
MOVWF SYS_TMP1
MOVLW HIGH PRG3_WERTE
MOVWF PCLATH
MOVFW SYS_TMP1
ADDWF PCL,F
PRG3_WERTE
RETLW 255
RETLW 127
RETLW 191
RETLW 223
RETLW 239
RETLW 247
RETLW 251
RETLW 253
RETLW 254
END
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