Açıklama:Bu projede sensörlerin bulunduğu yerin sıcaklığı ve ortamın ışığı ( parlaklığı ) ölçülmektedir. ADC’ deki data hesaplanarak LCD ekranda görülmektedir.
Devre dijital sıcaklık ve ışık ölçer gibi çalışmaktadır. Her iki sensörde PIC’ in analog kanallarına bağlıdır. Hesaplama işlemlerini basitleştirmek için 2.56 V’ luk bir referans voltajı kullanılmıştır.
Bu projede sensörlerin bulunduğu yerin sıcaklığı ve ortamın ışığı ölçülmektedir.ADC'deki data hesaplanarak LCD ekranda görülmektedir.
DEVRE ŞEMASI:
DEVRENİN YAPILMIŞ HALİ
Devre dijital sıcaklık ve ışık ölçer gibi çalışmaktadır.Her iki sensörde pic'in analog kanallarına bağlıdır.Hesaplama işlemlerini basitleştirmek için 2,56 Voltluk bir referans kullanılmıştır.Bu durumda çözünürlük 2,5mV'tur.LM35 ve Cds fotoselin kullanılması ile parlaklık ve sıcaklık için formüller aşağıdaki gibi olur.
Sıcaklık (Santigrad ) = ADC sonucu / 4
Parlaklık(%) = ADC'nin sonucu / 8
Debug modu için
1- Switch ON konumunda olmalıdır.Anahtarı bu konuma almakla PIC her iki kanaldaki ADC kodlarını işlenmiş halini gösterir, buda bize hataları kontrol etmemizi ve hataları gidermemizi sağlar.
ASSEMBLY KODLARI :
;------------------------------------------------------------------------------------------------------------------------
; Source code for the PIC16F873 based Digital Light and Temp. Reader.
;------------------------------------------------------------------------------------------------------------------------
;
; **Analog Pinouts
; Analog Voltage Input - RA0 (Temp), RA1 (Light).
; Low Voltage Reference - Vss
; High Voltage Reference - RA3, 2.56V
; Resolution = 2.56V / 1024 = 2.5mV / bit.
;
; **USART Pinouts
; Transmit Data - RC6 (TX)
;
; **Modes
; Debug Mode - RC4 (Low = Debug, High = User)
; Infra Mode - RC5 (Low = Enabled, High = Disabled)
;
; **LCD Pinouts
; 1 Vss - Ground, 3rd pin of the potentiometer
; 2 Vcc - 5V DC, 1st pin of the potentiometer
; 3 Vee - Middle pin of the potentiometer
; 4 RS - RC0 (Data - 1, Instruction - 0)
; 5 R/W - RC1 (R - 1, W - 0)
; 6 E - RC2 (Enable Pulse)
; 7 DB0 - RB0 (LSB)
; 8 DB1 - RB1
; 9 DB2 - RB2
; 10 DB3 - RB3 (Lower 4 bits)
; 11 DB4 - RB4 (Upper 4 bits)
; 12 DB5 - RB5
; 13 DB6 - RB6
; 14 DB7 - RB7 (MSB)
;
; Instruction Cycle Time = 1 / (4MHz / 4) = 1us per instruction
;------------------------------------------------------------------------------------------------------------------------
LIST P=16F873
INCLUDE "p16f873.inc"
; ERRORLEVEL -302
__CONFIG _PWRTE_OFF & _HS_OSC & _WDT_OFF & _WRT_ENABLE_ON & _LVP_OFF & _BODEN_OFF; configuration switches
CBlock 0x20
N ; Delay registers.
FIXDELAY
visdelay
dataL
rmng_num ; Digit breaker registers.
quotient
temp_num
tempL ; Temp. variable registers.
tempH
tempCfract
digittempdata0 ; Temp Data digit registers.
digittempdata1
digittempdata2
digittempdataL0
digittempdataL1
digittempdataL2
tempnonfract0 ; Actual temperature digit registers.
tempnonfract1
tempnonfract2
tempfract0
tempfract1
briteL ; Brightness variable registers.
briteH
britefract
digitbritedata0 ; Brightness data digit registers.
digitbritedata1
digitbritedata2
digitbritedataL0
digitbritedataL1
digitbritedataL2
britenonfract0 ; Actual temperature digit registers.
britenonfract1
britenonfract2
britefract0
britefract1
tempHtrans ; Data to be passed to PC.
tempLtrans
briteHtrans
briteLtrans
ENDC
org 0x00
nop ; Reserved for ICD II.
goto start
start call initports ; Initialize Ports as output/inputs.
call setupUART ; Setup USART.
call delay ; Delay for USART settling time.
call INITLCD ; Initialize LCD.
main call tempconv ; Convert temperature readings.
call briteconv ; Convert brightness readings.
call passdata2pc ; Pass data to PC.
call displaydata ; Display the calculated data, either in Debug or User mode.
call visualdelay ; Visual delay for the to view data.
goto main
;------------------------------------------------------------------------------------------------------------------------
; Subroutine to initialize the PORTs as Inputs or Outputs.
;------------------------------------------------------------------------------------------------------------------------
initports
clrf PORTB
clrf PORTC
banksel TRISB ; All PORTB pins as output.
movlw b'00000000'
movwf TRISB
banksel TRISC ; Pins RC0-RC3 and RC6 as output.
movlw b'10110000' ; Pins RC4-RC5 and RC7 as input.
movwf TRISC
return
;------------------------------------------------------------------------------------------------------------------------
; Initialize the LCD.
;------------------------------------------------------------------------------------------------------------------------
INITLCD
BANKSEL PORTB ; Select Bank for PORTB.
MOVLW 0xE6 ; Call for 46ms delay
CALL NDELAY ; Wait for VCC of the LCD to reach 5V
BCF PORTC, 0 ; Clear RS to select Instruction Reg.
BCF PORTC, 1 ; Clear R/W to write
MOVLW B'00111011' ; Function Set to 8 bits, 2 lines and 5x7 dot matrix
MOVWF PORTB
CALL ENABLEPULSE
CALL DELAY50
CALL ENABLEPULSE
CALL DELAY50
CALL ENABLEPULSE
CALL DELAY50 ; Call 50us delay and wait for instruction completion
MOVLW B'00001000' ; Display OFF
MOVWF PORTB
CALL ENABLEPULSE
CALL DELAY50 ; Call 50us delay and wait for instruction completion
MOVLW B'00000001' ; Clear Display
MOVWF PORTB
CALL ENABLEPULSE
MOVLW 0x09 ; Call 1.8ms delay and wait for instruction completion
CALL NDELAY
MOVLW B'00000010' ; Cursor Home
MOVWF PORTB
CALL ENABLEPULSE
MOVLW 0x09 ; Call 1.8ms delay and wait for instruction completion
CALL NDELAY
MOVLW B'00001100' ; Display ON, Cursor OFF, Blinking OFF
MOVWF PORTB
CALL ENABLEPULSE
CALL DELAY50 ; Call 50us delay and wait for instruction completion
MOVLW B'00000110' ; Entry Mode Set, Increment & No display shift
MOVWF PORTB
CALL ENABLEPULSE
CALL DELAY50 ; Call 50us delay and wait for instruction completion
BSF PORTC, 0 ; Set RS to select Data Reg.
BCF PORTC, 1 ; Clear R/W to write
RETURN
;------------------------------------------------------------------------------------------------------------------------
; Enable Pulse for writing or reading instructions or data
;------------------------------------------------------------------------------------------------------------------------
ENABLEPULSE BCF PORTC, 2 ; 2us LOW followed by 3us HIGH Enable Pulse and 2us LOW.
NOP
NOP
BSF PORTC, 2
NOP
NOP
NOP
BCF PORTC, 2
NOP
NOP
RETURN
;------------------------------------------------------------------------------------------------------------------------
; N DELAY SUBROUTINE, delay in multiples of 200us up to 200us*255 = 51ms (or more)
;------------------------------------------------------------------------------------------------------------------------
NDELAY
MOVWF N ; N is delay multiplier
NOTOVER CALL DELAY200 ; Call for 200us
DECFSZ N, 1 ; Decrease N by 1
GOTO NOTOVER ; The delay isn't done
RETURN
;------------------------------------------------------------------------------------------------------------------------
; FIXED 200us DELAY (Possibly more due to execution time of the DECFSZ instruction.)
;------------------------------------------------------------------------------------------------------------------------
DELAY200
MOVLW 0x42 ; 66 LOOPS
MOVWF FIXDELAY ; 200us fixed delay
NOTDONE200 DECFSZ FIXDELAY, 1 ; Decrement of FIXDELAY
GOTO NOTDONE200 ; If 200us isn't up go back to NOTDONE200
RETURN ; If 200us is up then return to instruction.
;------------------------------------------------------------------------------------------------------------------------
; FIXED 50us DELAY (Possibly more due to execution time of the DECFSZ instruction.)
;------------------------------------------------------------------------------------------------------------------------
DELAY50
MOVLW 0x10 ; 16 LOOPS
MOVWF FIXDELAY ; 50us fixed delay
NOTDONE50 DECFSZ FIXDELAY, 1 ; Decrement of FIXDELAY
GOTO NOTDONE50 ; If 50us isn't up go back to NOTDONE50
RETURN ; If 50us is up then return to instruction.
;------------------------------------------------------------------------------------------------------------------------
; Visual delay subroutine.
;------------------------------------------------------------------------------------------------------------------------
visualdelay movlw 0x12
movwf visdelay
seetemp movlw 0xFF
call NDELAY
decfsz visdelay, 1
goto seetemp
return
;------------------------------------------------------------------------------------------------------------------------
; Fast Directive to write characters to LCD.
;------------------------------------------------------------------------------------------------------------------------
PUTCHAR
MOVWF PORTB ; A quicker way of writing characters to LCD.
CALL ENABLEPULSE
CALL CHKBUSY
RETURN
;------------------------------------------------------------------------------------------------------------------------
; Subroutine to check for the BUSY flag. Mostly used for instructions that follows up a character write.
;------------------------------------------------------------------------------------------------------------------------
CHKBUSY
bcf PORTC, 0 ; Clear RS to select Instruction Reg.
bsf PORTC, 1 ; Set R/W to read.
banksel TRISB ; Select Bank for TRISC.
movlw 0xFF ; Define all PORTC Pins as Inputs.
movwf TRISB
banksel PORTC ; Select Bank for PORTC.
bsf PORTC, 2 ; I tried to write my own code for this part initially but I wasn't successful.
movf PORTB, w ; Therefore, I implemented a portion of Peter Ouwehand's LCD Code.
bcf PORTC, 2 ; Will look more into the BUSY flag of the LCD.
andlw 0x80 ; Credits to Peter Ouwehand for his code here. :)
btfss STATUS, Z
goto CHKBUSY
banksel TRISB ; Select Bank for TRISB.
movlw 0x00 ; Define all PORTC Pins as Outputs.
movwf TRISB
banksel PORTC ; Select Bank for PORTA, B, and C.
bsf PORTC, 0 ; Set RS to select Data Register.
bcf PORTC, 1 ; Clear R/W to write.
return
;------------------------------------------------------------------------------------------------------------------------
; Position Cursor to the next line.
;------------------------------------------------------------------------------------------------------------------------
nextline
banksel PORTC
bcf PORTC, 0 ; Select Instructions Register.
bcf PORTC, 1 ; Select Write.
movlw b'11000000' ; Shift cursor to second line at 0x40 RAM address on LCD.
call PUTCHAR
return
;------------------------------------------------------------------------------------------------------------------------
; Clear screen and Cursor home.
;------------------------------------------------------------------------------------------------------------------------
clrscreen
banksel PORTC
bcf PORTC, 0 ; Clear RS to select Instructions Register.
bcf PORTC, 1 ; Clear R/W to select Write.
banksel PORTB
MOVLW B'00000001' ; Clear Display
call PUTCHAR
return
;------------------------------------------------------------------------------------------------------------------------
; Position Cursor to home position.
;------------------------------------------------------------------------------------------------------------------------
cursorhome
banksel PORTC
bcf PORTC, 0 ; Select Instructions Register.
bcf PORTC, 1 ; Select Write.
movlw b'00000010' ; Position cursor to home position.
call PUTCHAR
return
;------------------------------------------------------------------------------------------------------------------------
; Initialize ADC Subroutine
;------------------------------------------------------------------------------------------------------------------------
initadc
banksel TRISA ; Select Bank for TRISA.
movlw b'00111111' ; Initialize RA0 - RA5 as Inputs.
movwf TRISA
banksel ADCON1 ; Select Bank for ADCON1.
movlw b'00000101' ; ADFM for Left Justified, Vref-=Vss Vref+=AN3 Analog In=AN0, AN1 (R/C = 1/2).
movwf ADCON1
banksel ADCON0 ; Select Bank for ADCON0.
movlw b'01000001' ; Fosc/8, Channel 0, Enable the ADC (Default Chan. 0)
movwf ADCON0
return
;------------------------------------------------------------------------------------------------------------------------
; Wait 20us for Acquisition time in order for holding capacitor to charge up.
;------------------------------------------------------------------------------------------------------------------------
delay20
banksel FIXDELAY ; A loop to generate 20us delay.
movlw 0x0A
movwf FIXDELAY
notdone20 decfsz FIXDELAY, 1
goto notdone20
return
;------------------------------------------------------------------------------------------------------------------------
; This routine starts the AD Conversion and waits for it to complete.
;------------------------------------------------------------------------------------------------------------------------
startadc
banksel ADCON0 ; Select Bank for ADCON0.
bsf ADCON0, GO ; Set the GO bit to begin AD Conversion.
banksel ADCON0 ; Select Bank for ADCON0.
checkdone btfsc ADCON0, GO ; Check if the conversion is done?
goto checkdone ; If not, check again.
return ; Else, return to the main programme.
;------------------------------------------------------------------------------------------------------------------------
; Subroutine to setup the USART.
;------------------------------------------------------------------------------------------------------------------------
setupUART
banksel SPBRG ; Load into SPBRG the value of 103 for Baud Rate of 2400 with error of 0.17%.
movlw d'103'
movwf SPBRG
movlw b'00100100' ; Set 8 bit Transmission, Enable Transmit, Asynchronous Mode, High Speed.
movwf TXSTA
banksel RCSTA
movlw b'10010000' ; Enable Serial Port, 8 bit Reception, Enable Continuous Receive.
movwf RCSTA
return
;------------------------------------------------------------------------------------------------------------------------
; Delay to provide some settling time for start up.
;------------------------------------------------------------------------------------------------------------------------
delay
banksel dataL
clrf dataL
settle decfsz dataL, f ; The delay loop.
goto settle
movf RCREG, w ; Flush the receive buffer.
movf RCREG, w
movf RCREG, w
return
;------------------------------------------------------------------------------------------------------------------------
; Receive character from RS232 and store in WREG.
;------------------------------------------------------------------------------------------------------------------------
receive
banksel PIR1
waitrcv btfss PIR1, RCIF ; Wait for RCIF to be set, when set then receive buffur is full.
goto waitrcv ; If not set, then keep waiting.
movf RCREG, w ; If set, move buffer content to WREG.
return
;------------------------------------------------------------------------------------------------------------------------
; Transmit the character that is on WREG to RS232 and wait until the sending is complete.
;------------------------------------------------------------------------------------------------------------------------
transmit
banksel TXREG
movwf TXREG ; Move character to TXREG to be transmitted.
banksel TXSTA
waittrn btfss TXSTA, TRMT ; Check if buffer is empty.
goto waittrn ; If no, then keep waiting.
banksel PORTB ; If yes, select Bank 0 and return.
return
;------------------------------------------------------------------------------------------------------------------------
; Select Channel AN0 of A/D Converter.
;------------------------------------------------------------------------------------------------------------------------
chan0
banksel ADCON0
bcf ADCON0, 5
bcf ADCON0, 4
bcf ADCON0, 3
return
;------------------------------------------------------------------------------------------------------------------------
; Select Channel AN1 of A/D Converter.
;------------------------------------------------------------------------------------------------------------------------
chan1
banksel ADCON0
bcf ADCON0, 5
bcf ADCON0, 4
bsf ADCON0, 3
return
;------------------------------------------------------------------------------------------------------------------------
; Breaks down a number to its individual digits.
;------------------------------------------------------------------------------------------------------------------------
get_dig
movlw d'10' ; To split the digits, divide them by 10.
incf quotient, f ; Increment of quotient with each subtraction by 10.
subwf rmng_num, f ; Subtract the number by 10.
skpnc ; If already negative, stop division.
goto get_dig ; Else, continue dividing.
addwf rmng_num, f ; Restore number.
decf quotient, f ; Restore quotient.
movf rmng_num, w ; Move rmng_num to temp_num.
movwf temp_num
movf quotient, w ; Move quotient to rmng_num.
movwf rmng_num
movf temp_num, w
return
;------------------------------------------------------------------------------------------------------------------------
; Temperature Conversion Subroutine.
;------------------------------------------------------------------------------------------------------------------------
tempconv
call initadc ; Initialize and begin ADC on AN0.
call chan0
call delay20 ; Delay to charge up holding capacitor.
call startadc ; Start ADC and await the completion.
banksel ADRESH ; Pass high byte to tempH.
movf ADRESH, w
movwf tempH
movwf tempHtrans
banksel ADRESL ; Pass low byte to tempL.
movf ADRESL, w
banksel tempL
movwf tempL
movwf tempLtrans
arrgtemp bcf STATUS, C ; Rearrange tempL from xx00 0000 to 0000 00xx.
rlf tempL, f
btfss STATUS, C
goto $+2
bsf tempL, 0
bcf STATUS, C
rlf tempL, f
btfss STATUS, C
goto $+2
bsf tempL, 0
brkdigtemp
banksel tempH
movf tempH, w
movwf rmng_num
clrf quotient ; Break ADC high byte result to individual digits to be displayed.
call get_dig
movwf digittempdata0
clrf quotient
call get_dig
movwf digittempdata1
clrf quotient
call get_dig
movwf digittempdata2
banksel tempL
movf tempL, w
movwf rmng_num
clrf quotient ; Break ADC low byte result to individual digits to be displayed.
call get_dig
movwf digittempdataL0
clrf quotient
call get_dig
movwf digittempdataL1
clrf quotient
call get_dig
movwf digittempdataL2
calctempC
banksel tempL
movlw d'25' ; Assign multiplier and clear fractional temperature reading.
clrf tempCfract
mult25 addwf tempCfract, f ; Multiply ADRESL by 25 to obtain fractional temperature reading.
decfsz tempL, f
goto mult25
breaktempC movf tempH, w ; Break up temperature readings to ind. digits to be displayed.
movwf rmng_num
clrf quotient
call get_dig
movwf tempnonfract0
clrf quotient
call get_dig
movwf tempnonfract1
clrf quotient
call get_dig
movwf tempnonfract2
movf tempCfract, w
movwf rmng_num
clrf quotient
call get_dig
movwf tempfract0
clrf quotient
call get_dig
movwf tempfract1
return
;------------------------------------------------------------------------------------------------------------------------
; Brightness Conversion Subroutine.
;------------------------------------------------------------------------------------------------------------------------
briteconv
call initadc ; Initialize and begin ADC on AN1.
call chan1
call delay20 ; Delay to charge up holding capacitor.
call delay20
call startadc ; Start ADC and await the completion.
banksel ADRESH ; Pass high byte to briteH.
movf ADRESH, w
movwf briteH
movwf briteHtrans
banksel ADRESL ; Pass low byte to briteL.
movf ADRESL, w
banksel briteL
movwf briteL
movwf briteLtrans
arrgbrite bcf STATUS, C ; Rearrange briteL from xx00 0000 to 0000 00xx.
rlf briteL, f
btfss STATUS, C
goto $+2
bsf briteL, 0
bcf STATUS, C
rlf briteL, f
btfss STATUS, C
goto $+2
bsf briteL, 0
bcf STATUS, C ; Pass LSbit of briteH to 2nd bit of briteL.
rrf briteH, f
btfss STATUS, C
goto $+2
bsf briteL, 2
chkbrite movlw d'30' ; Check if brightness is below 30%.
subwf briteH, w
skpc
goto onbklit ; If yes, activate backlit.
goto offbklit ; Else, off backlit.
onbklit bsf PORTC, 3
goto brkdigbrite
offbklit bcf PORTC, 3
goto brkdigbrite
brkdigbrite
banksel briteH
movf briteH, w
movwf rmng_num
clrf quotient ; Break ADC high byte result to individual digits to be displayed.
call get_dig
movwf digitbritedata0
clrf quotient
call get_dig
movwf digitbritedata1
clrf quotient
call get_dig
movwf digitbritedata2
banksel briteL
movf briteL, w
movwf rmng_num
clrf quotient ; Break ADC low byte result to individual digits to be displayed.
call get_dig
movwf digitbritedataL0
clrf quotient
call get_dig
movwf digitbritedataL1
clrf quotient
call get_dig
movwf digitbritedataL2
calcbrite
banksel briteL
movlw d'13' ; Assign multiplier and clear fractional brightness reading.
clrf britefract
mult13 addwf britefract, f ; Multiply ADRESL by 13 to obtain fractional brightness reading.
decfsz briteL, f
goto mult13
breakbrite movf briteH, w ; Break up brightness readings to ind. digits to be displayed.
movwf rmng_num
clrf quotient
call get_dig
movwf britenonfract0
clrf quotient
call get_dig
movwf britenonfract1
clrf quotient
call get_dig
movwf britenonfract2
movf britefract , w
movwf rmng_num
clrf quotient
call get_dig
movwf britefract0
clrf quotient
call get_dig
movwf britefract1
return
;------------------------------------------------------------------------------------------------------------------------
; Check status on RC5 to determine whether to pass data to PC.
;------------------------------------------------------------------------------------------------------------------------
passdata2pc
btfss PORTC, 5
goto transdata
goto transdone
transdata movf tempHtrans, w ; Pass temp results to PC.
call transmit
movf tempLtrans, w
call transmit
movf briteHtrans, w
call transmit
movf briteLtrans, w
call transmit
goto transdone
transdone return
;------------------------------------------------------------------------------------------------------------------------
; Check status on RC4 and display the data.
;------------------------------------------------------------------------------------------------------------------------
displaydata movlw d'48' ; Convert individual digits to ASCII.
addwf digittempdata2, f
addwf digittempdata1, f
addwf digittempdata0, f
addwf digittempdataL2, f
addwf digittempdataL1, f
addwf digittempdataL0, f
addwf tempnonfract2, f
addwf tempnonfract1, f
addwf tempnonfract0, f
addwf tempfract1, f
addwf tempfract0, f
addwf digitbritedata2, f
addwf digitbritedata1, f
addwf digitbritedata0, f
addwf digitbritedataL2, f
addwf digitbritedataL1, f
addwf digitbritedataL0, f
addwf britenonfract2, f
addwf britenonfract1, f
addwf britenonfract0, f
addwf britefract1, f
addwf britefract0, f
btfss PORTC, 4 ; Check Pin 4 of PORTC. If HIGH then display calc. data.
goto debugdata ; Else, display raw ADC data.
goto userdata
debugdata call cursorhome ; Reposition cursor to home.
movlw A'A' ; Displays "ADRES0 xxx yyy"
call PUTCHAR ; "ADRES1 xxx yyy"
movlw A'D'
call PUTCHAR
movlw A'R'
call PUTCHAR
movlw A'E'
call PUTCHAR
movlw A'S'
call PUTCHAR
movlw A'0'
call PUTCHAR
movlw A' '
call PUTCHAR
movf digittempdata2, w
call PUTCHAR
movf digittempdata1, w
call PUTCHAR
movf digittempdata0, w
call PUTCHAR
movlw A' '
call PUTCHAR
movf digittempdataL2, w
call PUTCHAR
movf digittempdataL1, w
call PUTCHAR
movf digittempdataL0, w
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A' '
call PUTCHAR
call nextline
movlw A'A'
call PUTCHAR
movlw A'D'
call PUTCHAR
movlw A'R'
call PUTCHAR
movlw A'E'
call PUTCHAR
movlw A'S'
call PUTCHAR
movlw A'1'
call PUTCHAR
movlw A' '
call PUTCHAR
movf digitbritedata2, w
call PUTCHAR
movf digitbritedata1, w
call PUTCHAR
movf digitbritedata0, w
call PUTCHAR
movlw A' '
call PUTCHAR
movf digitbritedataL2, w
call PUTCHAR
movf digitbritedataL1, w
call PUTCHAR
movf digitbritedataL0, w
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A' '
call PUTCHAR
goto displaydone
userdata call cursorhome ; Reposition cursor to home.
movlw A'T' ; Display message "Temp xxx.yy C"
call PUTCHAR ; "Light xxx.yy %"
movlw A'e'
call PUTCHAR
movlw A'm'
call PUTCHAR
movlw A'p'
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A' '
call PUTCHAR
movf tempnonfract2, w
call PUTCHAR
movf tempnonfract1, w
call PUTCHAR
movf tempnonfract0, w
call PUTCHAR
movlw A'.'
call PUTCHAR
movf tempfract1, w
call PUTCHAR
movf tempfract0, w
call PUTCHAR
movlw b'11011111'
call PUTCHAR
movlw A'C'
call PUTCHAR
call nextline
movlw A'L'
call PUTCHAR
movlw A'i'
call PUTCHAR
movlw A'g'
call PUTCHAR
movlw A'h'
call PUTCHAR
movlw A't'
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A' '
call PUTCHAR
movf britenonfract2, w
call PUTCHAR
movf britenonfract1, w
call PUTCHAR
movf britenonfract0, w
call PUTCHAR
movlw A'.'
call PUTCHAR
movf britefract1, w
call PUTCHAR
movf tempfract0, w
call PUTCHAR
movlw A' '
call PUTCHAR
movlw A'%'
call PUTCHAR
displaydone return
;------------------------------------------------------------------------------------------------------------------------
; End of Programme.
;------------------------------------------------------------------------------------------------------------------------
end
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