;*************************************************************************************
;Program that communicates with a keypad and displays only * to mask the number. *
;This display indicates the mode that it is in. The six digit code is input and a *
;calculation is done to determine if the code is correct. *
;*********02/12/2003*****************15H15**********************************BJB*******
;*************************************************************************************
; Setup *
;*************************************************************************************
LIST P=16F84A ;Processor type
ERRORLEVEL -302 ;Suppress warning of bank 1 operands
INCLUDE "P16F84A.INC" ;
MYREG EQU 0X20 ;
OUTPUT EQU 0X21 ;This reg for data reading to out pin
MYREG1 EQU 0X22 ;
MYREG2 EQU 0X23 ;
COUNTER EQU 0X24 ;
DIGITS EQU 0X25 ;
FLASH1 EQU 0X28 ;
DELAY2 EQU 0X29 ;
DELAY3 EQU 0X2A ;
COUNTER1 EQU 0X2B ;
NUMBER1 EQU 0X2C ;
NUMBER2 EQU 0X2D ;
NUMBER3 EQU 0X2E ;
NUMBER4 EQU 0X2F ;
NUMBER5 EQU 0X30 ;
NUMBER6 EQU 0X31 ;
CODEDATA EQU 0X32 ;
CLRF CODEDATA ;
CLRF NUMBER1 ;
CLRF NUMBER2 ;
CLRF NUMBER3 ;
CLRF NUMBER4 ;
CLRF NUMBER5 ;
CLRF NUMBER6 ;
CLRF COUNTER ;
CLRF OUTPUT ;
CLRF MYREG ;
CLRF MYREG1 ;
CLRF MYREG2 ;
CLRF DIGITS ;
CLRF FLASH1 ;
CLRF COUNTER1 ;
BSF STATUS,5 ;Select bank 1
MOVLW 0X00 ;All outputs
MOVWF TRISA ;Ditto
MOVLW 0X0F ;Lower nibble is inputs
MOVWF TRISB ;Ditto
BCF STATUS,5 ;Back to bank 0
BCF PORTB,7 ;R/S Set to zero- command mode
CLRF PORTA ;Ensure all outputs are at zero
GOTO START ;
;*************************************************************************************
; Pinout use *
;*************************************************************************************
;PORTA , 0 is column 1
;PORTA , 1 is column 2
;PORTA , 2 is column 3
;PORTB , 0 is scanning row 1
;PORTB , 1 is scanning row 2
;PORTB , 2 is scanning row 3
;PORTB , 3 is scanning row 4
;PORTB , 4 is clock output
;PORTB , 5 is serial output pin
;PORTB , 6 is enable
;PORTB , 7 is R/S pin
;*************************************************************************************
; Subroutines *
;*************************************************************************************
ENABLE BSF PORTB,6 ;Set ENABLE pin high
CALL DELAY ;Minimum setup time for the LCD
BCF PORTB,6 ;Falling edge needed to trigger LCD
CALL DELAY ;Kill some time
RETURN ;
DELAY MOVLW 0xFF ;Load 255 into W-register
MOVWF MYREG ;Move this data into MYREG
LOOP DECFSZ MYREG,1 ;Decrement MYREG, ans into MYREG
GOTO LOOP ;Loop program till MYREG = 0
RETURN ;
LONGDELAY MOVLW 0XFF ;
MOVWF DELAY2 ;
LOOP2 DECFSZ DELAY2,1 ;
GOTO LDELAY ;
RETURN ;
LDELAY MOVLW 0XFF ;
MOVWF DELAY3 ;
LOOP3 DECFSZ DELAY3,1 ;
GOTO LOOP3 ;
GOTO LOOP2 ;
DELAY1 MOVLW 0x60 ;Load 96 into W-register
MOVWF MYREG2 ;Move this data into MYREG
LOOP1 DECFSZ MYREG2,1 ;Decrement MYREG, ans into MYREG
GOTO LOOP1 ;Loop program till MYREG = 0
RETURN
CLOCK BCF PORTB,4 ;Ensure that *Clock starts at 0
BSF PORTB,4 ;Clock value HIGH
CALL DELAY ;Kill some time
BCF PORTB,4 ;Falling edge *Clock
CALL DELAY ;Kill some time
RETURN ;
SERIAL MOVWF OUTPUT ;Moved data from W to OUTPUT reg
SERIAL1 BCF PORTB,5 ;Ensure that SERIAL pin starts @ 0
MOVLW 0x04 ;There are 4 bits to a nibble
MOVWF MYREG1 ;Nibble control for escape
TEST BTFSC OUTPUT,7 ;Test data bit 7
BSF PORTB,5 ;SET SERIAL pin to 1
CALL CLOCK ;Clock the data to shift register
BCF PORTB,5 ;Reset SERIAL pin for next test
RLF OUTPUT,1 ;Rotate the OUTPUT register left
DECFSZ MYREG1,1 ;Decrement MYREG1, ans into MYREG1
GOTO TEST ;Do next bit of the word till all done
CALL ENABLE ;Enable the LCD to read the data
RETURN ;Escape after the word is output
EX1 MOVF CODEDATA,0 ;Move data to w_reg
MOVWF NUMBER1 ;Move to number1 reg
RETURN ;
EX2 MOVF CODEDATA,0 ;Move data to w_reg
MOVWF NUMBER2 ;Move to number2 reg
RETURN ;
EX3 MOVF CODEDATA,0 ;Move data to w_reg
MOVWF NUMBER3 ;Move to number3 reg
RETURN ;
EX4 MOVF CODEDATA,0 ;Move data to w_reg
MOVWF NUMBER4 ;Move to number4 reg
RETURN ;
EX5 MOVF CODEDATA,0 ;Move data to w_reg
MOVWF NUMBER5 ;Move to number5 reg
RETURN ;
EX6 MOVF CODEDATA,0 ;Move data to w_reg
MOVWF NUMBER6 ;Move to number6 reg
GOTO CHECK ;
;*************************************************************************************
; LCD Initialise *
;*************************************************************************************
START MOVLW 0x20 ;4 bit
CALL SERIAL ;Move this data to the shift register
MOVLW 0x28 ;4 bit, 2 line, 7x5 matrix
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0x0C ;Disp ON, no cursor
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0x02 ;Display & curser home
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0x01 ;Clear display
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0XC0 ;Address 40
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
;
;*************************************************************************************
; INTRO *
;*************************************************************************************
MOVLW 0X03 ;This is for three tries
MOVWF COUNTER1 ;Counter for amount of attempts
ZERO BSF PORTB,7 ;Character mode
MOVLW 'D' ;D
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'i' ;i
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 's' ;s
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW '-' ;-
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'a' ;a
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'r' ;r
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'm' ;m
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'i' ;i
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'n' ;n
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'g' ;g
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW ' ' ;
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'C' ;C
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'o' ;o
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'd' ;d
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'e' ;e
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW '?' ;?
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BCF PORTB,7 ;Command mode
MOVLW 0X85 ;Address
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
;*************************************************************************************
; MAIN *
;*************************************************************************************
CLEARS MOVLW 0X06 ;Setup maximum digits used
MOVWF DIGITS ;This is the max digit used reg
TESTDATA MOVF DIGITS,0 ;Re-input number of digits left into W
MOVWF DIGITS ;After movf, leave a copy again in DIGITS
XORLW 0X06 ;Has a digit been input ?
BTFSC STATUS,Z ;Well, has it
CLRF CODEDATA ;Ensure that reg CODEDATA is empty
MOVF DIGITS,0 ;Re-input number of digits left into W
MOVWF DIGITS ;Re-input number of digits left into W
XORLW 0X05 ;2nd digit to follow ?
BTFSC STATUS,Z ;Well, is it ?
CALL EX1 ;Put the numeric value into the correct
;NUMBER register
MOVF DIGITS,0 ;Re-input number of digits left into W
MOVWF DIGITS ;Re-input number of digits left into W
XORLW 0X04 ;3rd digit to follow ?
BTFSC STATUS,Z ;Well, is it ?
CALL EX2 ;Put the numeric value into the correct
;NUMBER register
MOVF DIGITS,0 ;Re-input number of digits left into W
MOVWF DIGITS ;Re-input number of digits left into W
XORLW 0X03 ;4th digit to follow ?
BTFSC STATUS,Z ;Well, is it ?
CALL EX3 ;Put the numeric value into the correct
;NUMBER register
MOVF DIGITS,0 ;Re-input number of digits left into W
MOVWF DIGITS ;Re-input number of digits left into W
XORLW 0X02 ;5th digit to follow ?
BTFSC STATUS,Z ;Well, is it ?
CALL EX4 ;Put the numeric value into the correct
;NUMBER register
MOVF DIGITS,0 ;Re-input number of digits left into W
MOVWF DIGITS ;Re-input number of digits left into W
XORLW 0X01 ;6th digit to follow ?
BTFSC STATUS,Z ;Well, is it ?
CALL EX5 ;Put the numeric value into the correct
;NUMBER register
MOVF DIGITS,0 ;Re-input number of digits left into W
MOVWF DIGITS ;Re-input number of digits left into W
XORLW 0X00 ;All six digits in ?
BTFSC STATUS,Z ;Well, is it ?
GOTO EX6 ;Put the numeric value into the correct
;NUMBER register
BSF PORTA,0 ;Poke column 1 high
CALL DETERMINE ;Check PORTB lower nibble for change
BCF PORTA,0 ;Clear column 1
BSF PORTA,1 ;Poke column 2 high
CALL DETERMINE ;Check PORTB lower nibble for change
BCF PORTA,1 ;Clear column 2
BSF PORTA,2 ;Poke column 3 high
CALL DETERMINE ;Check PORTB lower nibble for change
BCF PORTA,2 ;Clear column 3
GOTO TESTDATA ;Loop, check everything again
;*************************************************************************************
; CALCULATION *
;*************************************************************************************
CHECK MOVF NUMBER1,0 ;Put numeric input 1 into W register
XORLW 0X05 ;Is the first saved value 5?
BTFSS STATUS,Z ;Well, is it ?
GOTO LOCKED ;No? start from scratch
MOVF NUMBER2,0 ;Put numeric input 2 into W register
XORLW 0X09 ;Is the second saved value 9?
BTFSS STATUS,Z ;Well, is it ?
GOTO LOCKED ;No? start from scratch
MOVF NUMBER3,0 ;Put numeric input 3 into W register
XORLW 0X07 ;Is the third saved value 7?
BTFSS STATUS,Z ;Well, is it ?
GOTO LOCKED ;No? start from scratch
MOVF NUMBER4,0 ;Put numeric input 4 into W register
XORLW 0X05 ;Is the fourth saved value 5?
BTFSS STATUS,Z ;Well, is it ?
GOTO LOCKED ;No? start from scratch
MOVF NUMBER5,0 ;Put numeric input 5 into W register
XORLW 0X03 ;Is the fifth saved value 3?
BTFSS STATUS,Z ;Well, is it ?
GOTO LOCKED ;No? start from scratch
MOVF NUMBER6,0 ;Put numeric input 6 into W register
XORLW 0X01 ;Is the sixth saved value 1?
BTFSS STATUS,Z ;Well, is it ?
GOTO LOCKED ;No? start from scratch
GOTO TWO ;Good the code is correct
;*************************************************************************************
; DETERMINATION *
;*************************************************************************************
DETERMINE BTFSC PORTB,0 ;Check first row
GOTO DEBOUNCE ;Run debounce subroutine
BTFSC PORTB,1 ;Check second row
GOTO DEBOUNCE1 ;Run debounce routine
BTFSC PORTB,2 ;Check third row
GOTO DEBOUNCE2 ;Run debounce routine
BTFSC PORTB,3 ;Check fouth row
GOTO DEBOUNCE3 ;Run debounce routine
RETURN ;
DEBOUNCE MOVLW 0X04 ;The amount of samples
MOVWF COUNTER ;The sample register
TESTING CALL DELAY1 ;Kill some time
BTFSS PORTB,0 ;Re-check this bit
GOTO START ;False trigger, escape to start
DECFSZ COUNTER,1 ;Re-sample 4 times
GOTO TESTING ;Ditto
TEST1 BTFSC PORTB,0 ;Wait for release
GOTO TEST1 ;Ditto
BSF PORTB,7 ;R/S set to 1 for character display
BTFSC PORTA,0 ;Was it the first column?
GOTO i1 ;This is the character (without i )
BTFSC PORTA,1 ;Was it the second column?
GOTO i2 ;This is the character (without i )
BTFSC PORTA,2 ;Was it the third column?
GOTO i3 ;This is the character (without i )
GOTO START ;
i1 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X01 ;Numeric value 1
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i2 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X02 ;Numeric value 2
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i3 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X03 ;Numeric value 3
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
DEBOUNCE1 MOVLW 0X04 ;The amount of samples
MOVWF COUNTER ;The sample register
TESTING1 CALL DELAY1 ;Kill some time
BTFSS PORTB,1 ;Re-check this bit
GOTO START ;False trigger, escape to start
DECFSZ COUNTER,1 ;Re-sample 4 times
GOTO TESTING1 ;Ditto
TEST2 BTFSC PORTB,1 ;Wait for release
GOTO TEST2 ;Ditto
BSF PORTB,7 ;R/S set to 1 for character display
BTFSC PORTA,0 ;Was it the first column?
GOTO i4 ;This is the character (without i )
BTFSC PORTA,1 ;Was it the second column?
GOTO i5 ;This is the character (without i )
BTFSC PORTA,2 ;Was it the third column?
GOTO i6 ;This is the character (without i )
GOTO START ;
i4 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X04 ;Numeric value 4
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i5 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X05 ;Numeric value 5
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i6 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X06 ;Numeric value 6
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
DEBOUNCE2 MOVLW 0X04 ;The amount of samples
MOVWF COUNTER ;The sample register
TESTING2 CALL DELAY1 ;Kill some time
BTFSS PORTB,2 ;Re-check this bit
GOTO START ;False trigger, escape to start
DECFSZ COUNTER,1 ;Re-sample 4 times
GOTO TESTING2 ;Ditto
TEST3 BTFSC PORTB,2 ;Wait for release
GOTO TEST3 ;Ditto
BSF PORTB,7 ;R/S set to 1 for character display
BTFSC PORTA,0 ;Was it the first column?
GOTO i7 ;This is the character (without i )
BTFSC PORTA,1 ;Was it the second column?
GOTO i8 ;This is the character (without i )
BTFSC PORTA,2 ;Was it the third column?
GOTO i9 ;This is the character (without i )
GOTO START ;
i7 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X07 ;Numeric value 7
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i8 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X08 ;Numeric value 8
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i9 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X09 ;Numeric value 9
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
DEBOUNCE3 MOVLW 0X04 ;The amount of samples
MOVWF COUNTER ;The sample register
TESTING3 CALL DELAY1 ;Kill some time
BTFSS PORTB,3 ;Re-check this bit
GOTO START ;False trigger, escape to start
DECFSZ COUNTER,1 ;Re-sample 4 times
GOTO TESTING3 ;Ditto
TEST4 BTFSC PORTB,3 ;Wait for release
GOTO TEST4 ;Ditto
BSF PORTB,7 ;R/S set to 1 for character display
BTFSC PORTA,0 ;Was it the first column?
GOTO ix ;This is the character (without i )
BTFSC PORTA,1 ;Was it the second column?
GOTO i0 ;This is the character (without i )
BTFSC PORTA,2 ;Was it the third column?
GOTO i# ;This is the character (without i )
GOTO START ;Wasn't triggered,check again
ix MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X2A ;ASCII symbol *
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i0 MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X00 ;Numeric value 0
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
i# MOVLW '*' ;*
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X23 ;ASCII symbol #
MOVWF CODEDATA ;Save data for manipulation
DECF DIGITS,1 ;Reduce digits register
BCF PORTB,7 ;Command mode
GOTO TESTDATA ;Redo the keypad scanning
;*************************************************************************************
; OUTCOMES *
;*************************************************************************************
LOCKED BCF PORTB,7 ;Command mode
BSF PORTA,4 ;Red LED on
MOVLW 0X01 ;Clear display
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X06 ;Increment display shift off
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X86 ;Address 6
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BSF PORTB,7 ;Character mode
MOVLW 'W' ;W
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'R' ;R
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'O' ;O
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'N' ;N
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'G' ;G
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BCF PORTB,7 ;Command mode
MOVLW 0XC6 ;Address 45
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BSF PORTB,7 ;Character mode
MOVLW 'C' ;C
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'O' ;O
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'D' ;D
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'E' ;E
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BCF PORTB,7 ;Command mode
MOVLW 0X0A ;Flash 10 times
MOVWF FLASH1 ;Flashing counter
FLASH MOVLW 0X08 ;Display off
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
CALL LONGDELAY ;Kill a long time
MOVLW 0X0C ;Display on
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
CALL LONGDELAY ;Kill a long time
DECFSZ FLASH1,1 ;Reduce amount of flashes by 1
GOTO FLASH ;Make the display flash on and off
BCF PORTB,7 ;Command mode
MOVLW 0X01 ;Clear display
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0XC0 ;Address 40
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BCF PORTA,4 ;Red LED off
DECFSZ COUNTER1,1 ;Count if max attempt reached
GOTO ZERO ;Re-ask for the code
ONE BSF PORTA,4 ;Red LED on
BCF PORTB,7 ;Command mode
MOVLW 0X01 ;Clear display
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X85 ;Address 05
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BSF PORTB,7 ;Character mode
MOVLW 'L' ;L
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'O' ;O
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'C' ;C
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'K' ;K
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'E' ;E
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'D' ;D
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BCF PORTB,7 ;Command mode
MOVLW 0XC0 ;Address 40
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BSF PORTB,7 ;Character mode
MOVLW 'U' ;U
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 's' ;s
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'e' ;e
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW ' ' ;
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'M' ;M
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'a' ;a
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 's' ;s
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 't' ;t
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'e' ;e
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'r' ;r
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW ' ' ;
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'C' ;C
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'o' ;o
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'd' ;d
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'e' ;e
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
GOTO $ ;
TWO BCF PORTB,7 ;Command mode
MOVLW 0X01 ;Clear display
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 0X82 ;Address 02
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
BSF PORTA,3 ;Green LED on
BSF PORTB,7 ;Character mode
MOVLW 'D' ;D
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'e' ;e
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW '-' ;-
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'A' ;a
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'c' ;c
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 't' ;t
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'i' ;i
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'v' ;v
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'a' ;a
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 't' ;t
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'e' ;e
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
MOVLW 'd' ;d
CALL SERIAL ;This will output 4 bits only
CALL SERIAL1 ;cause the low 4 are already high rot
;*************************************************************************************
GOTO $ ;
END
See:
Questions:
Comments:
| file: /Techref/microchip/3x4Key-4bLCD-Lock.htm, 49KB, , updated: 2008/7/6 15:33, local time: 2024/12/22 04:50,
owner: bj-hotmail-,
18.119.109.60:LOG IN
|
| ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://sxlist.com/techref/microchip/3x4Key-4bLCD-Lock.htm"> PIC Microcontroler 3x4 Keypad Lock w/ 4 bit LCD </A> |
| Did you find what you needed? |
Welcome to sxlist.com!sales, advertizing, & kind contributors just like you! Please don't rip/copy (here's why Copies of the site on CD are available at minimal cost. |
Welcome to sxlist.com! |
.