User Account

All Pages

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

Flow chart and pseudocode, #question.flow chart for a program to find out t...

#question.flow chart for a program to find out the number of even and odd numbers from a given series of 16-bit hexadecimal numbers.

Div-idiv-arithmetic instruction-microprocessor, DIV: Unsigned Division:- T...

DIV: Unsigned Division:- This instruction performs unsigned division operation. It divides an unsigned word or double word by a 16-bit or 8-bit operand. The dividend might be in t

Linking a program-microprocessor, Linking a program The DOS linking pro...

Linking a program The DOS linking program LINK.EXE links the different object modules of function library routines and source program to produce an integrated executable code o

Help with assemly language assignment, Will be needing help with assembly l...

Will be needing help with assembly language assignments over the course of 4 weeks

Program, Write a program to separate out positive and negative numbers from...

Write a program to separate out positive and negative numbers from a given series of 16-bit hexadecimal numbers.

Pc bus and interrupt system-microprocessor, PC Bus and Interrupt System ...

PC Bus and Interrupt System The PC Bus utilized a bus controller, address latches, and data transceivers (bidirectional data buffers). 1) Bus controller : ( Intel 8288 Bus

Assignment, 1. Write an assembly program that adds the elements in the odd ...

1. Write an assembly program that adds the elements in the odd indices of the following array. Use LOOP. What is the final value in the register? array1 DWORD 10, 20, 30, 40, 50, 6

Architecture of file transfer, Explain the architecture of the file transfe...

Explain the architecture of the file transfer protocol ftp in terms of clients, servers, sockets

Assembly language, Assembly Language: Inside the 8085, instructions ar...

Assembly Language: Inside the 8085, instructions are really stored like binary numbers, not a very good manner to look at them and very difficult to decipher. An assembler is

Addressing mode of 8086-microprocessor, Addressing mode of 8086 : Addre...

Addressing mode of 8086 : Addressing mode specify a way of locating operands or data. Depending on the data types used the memory  addressing  modes and in the instruction  ,

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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