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

Counting Array Values(Programming exercises), Write an application that doe...

Write an application that does the following:(1) fill an array with 50 random integers; (2) loop through the array, displaying each value, and count the number of negative values;

Addsub, Using the AddSub program from Ch3 under c:\Masm615\examples as a re...

Using the AddSub program from Ch3 under c:\Masm615\examples as a reference, write a program that subtracts three 16-bit integers using only registers. Insert a call DumpRegs statem

Cobol, #I submitted my assignment this morning and it is still processing. ...

#I submitted my assignment this morning and it is still processing. How long does it take?

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

Cache memory-microprocessor, Cache Memory Caching is a technology based...

Cache Memory Caching is a technology based on the memory subsystem of any computer. The majoraim of a cache is to accelerate the computer while keeping the cost of the computer

Modes of 8254-microprocessor, Modes of 8254 :   Mode 0 (Inter...

Modes of 8254 :   Mode 0 (Interrupt on Terminal Count)-GATE which value is 1 enables counting and GATE  which value is 0 disables counting, and GATE put not effect on

Programming, Using the following table as a guide, write a program that ask...

Using the following table as a guide, write a program that asks the user to enter an integer test score between 0 and 100. The program should display the appropriate letter grade.

Physical address, Mov ax, [1234h: 4336h + 100]

Mov ax, [1234h: 4336h + 100]

Signal descriptions of 8086-microprocessor, Signal descriptions of 8086 : ...

Signal descriptions of 8086 : described below are common for the maximum andminimum mode bothdata lines AD15 -AD0: These are the time multiplexed andmemory I/O address. Addre

Memory segmentation-microprocessor, Memory Segmentation : The  memory ...

Memory Segmentation : The  memory in an 8086/8088  based system is organized as segmented memory. In this scheme, the whole physically available memory can be divided into a n

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