PIC lights on, Assembly Language

Assignment Help:
errorlevel -302 ;prevents error code for this chipset
__config 0x373A ;chip config PIC spec page 146
processor 16F877A ;chipset

reset code 0x00
pagesel start ;Chooses pages from goto
nop ;does nothing
goto start

;**************************************************************************
code ;LABEL
start ;Label
clrf STATUS ;clear status from regester(Z is in status regester)
clrf PORTA ;clear port A
clrf PORTB ;clear port B
movlw 0x03 ;move literal into w
movwf PORTA ;move w into f

bsf STATUS, RP0 ;bit set f status, Regestry bank 0
movlw 0x07 ;move literal into w
movwf ADCON1
clrf TRISA ;clear register TriState regestry port A
clrf TRISB ;clear register TriState regestry port B
clrf TRISD ;clear register TriState regestry port D

CLRF STATUS
;*******************************************************************************
loop ;Start a Loop function
call LCD_update ;Calls LCD_Update function
call delay ;Calls delay function for time
goto loop ;Returns to loop


LCD_update_code code ;LAbEL
LCD_update ;LABEL

;IF CONTROL
sw1 btfsc PORTB, 1
goto display1
btfsc PORTB, 0
goto display2
display1
bcf PORTB, 0x01 ;turn Off LED 2
movlw 0xF9 ;Set number 1
movwf PORTD ;move w to f set PORTD
bsf PORTB, 0x00 ;turn On LED 1
goto finish_display

sw2 btfsc PORTB, 0
goto display2
btfsc PORTB, 1
goto display3
display2
bcf PORTB, 0x00 ;turn off LED
movlw 0x24 ;Set number 2
movwf PORTD
bsf PORTB, 0x01 ;turn on LED 2
goto finish_display


sw3 btfsc PORTB, 1
goto display3
btfsc PORTB, 0
goto display4
display3
bcf PORTB, 0x04 ;turn off LED 4
movlw 0x30 ;Set number 3
movwf PORTD
bsf PORTB, 0x02 ;turn on LED 3
goto finish_display


sw4 btfsc PORTB, 0
goto display3
btfsc PORTB, 1
goto finish_display
display4
bcf PORTB, 0x02 ;turn off LED 3
movlw 0x8D ;Set number 4
movwf PORTD
bsf PORTB, 0x04 ;turn on LED 4
goto finish_display

finish_display
RETURN

;*****************************************************************
;Variables for delay function

delay_udata udata ;LABEL
x res 2 ;x reserves 2 bytes

.delay code
delay
banksel x
clrf x
movlw 20
movwf x + 1
decfsz x, 1
goto $-1
decfsz x + 1, 1
goto $-3
return

end

Related Discussions:- PIC lights on

Programming with an assembler-microprocessor, Programming with an assembler...

Programming with an assembler The procedure of hand-coding 8086 programs is somewhat tiresome; hence generally a programmer may find it hard to get a correct listing of the mac

Basic microprocessor architecture and interface, Basic Microprocessor Archi...

Basic Microprocessor Architecture and Interface : Introduction: Intel launches its first 4-bit microprocessor 4004 in the year 1971 and 8-bit microprocessor 8008 in the y

Project, Any small project which can implement on any software. No need any...

Any small project which can implement on any software. No need any external hardware approach.

Cache controller-microprocessor, Cache controller The cache controller ...

Cache controller The cache controller is the mind of the cache.  Its responsibilities include:  performing the  snarfs and snoops, updating the  TRAM  and SRAM and implementing

Progframmw, write a programme the addition two 3*3 matrix and stored in fro...

write a programme the addition two 3*3 matrix and stored in from list

Microcontroller, bello need help with a final project , I have to do a pres...

bello need help with a final project , I have to do a presentation on a digital stop watch , but I have to use edsim51 to make it wondering if you guys can help me

Develop an assembly language program, • To develop an assembly language pro...

• To develop an assembly language program to control a "simulated" intelligent domestic lighting system with the intention of deterring burglary. • To produce a schematic circuit d

Assignment, You have to write a subroutine (assembly language code using NA...

You have to write a subroutine (assembly language code using NASM) for the following equation.

Find out the content of program, a- Trace the following program fragment an...

a- Trace the following program fragment and find out the content of ax after the          the execution of the program.         X db   5,7  -3,-9,4,-7,9               Mov

Flowchart, ALP to preform of two 16-bit numbers in register addressing mode...

ALP to preform of two 16-bit numbers in register addressing mode

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd