4 digit seven segment display showing time in seconds

Status
Not open for further replies.
S

swedha

Newbie level 3
Joined
Aug 23, 2012
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,307
hai,
i am doing my project,please help me in writing a program in both assembly language and in c language to continuously run microcontroller 8051 as a timer in seconds and display time in seconds using 4 digit seven segment display so that it can view from 0 to 9999 seconds.
please.....
 

Is this your home work?

There is a lot of examples available in the net. Search using google.
 

i have written assembly language program to run the timer but i donot know to display the seconds 4 digit 7 segment display.
i also need the same in c language.But i didnot get the suitable one in google.
 

code to run 8051 as timer:
org ooooh
seconds EQU 07Eh
crystal EQU 11059200
Timecycle EQU 12
TMR_SEC EQU crystal/timecycle
mov TMOD,#01h
mov seconds,#00h
again:mov ticks,#14h
loop:mov TH1=#4ch
mov TL1,#00h
SETB TR1
wait:JNB TF1,wait
CLR TF1
CLR TR1
DJNZ ticks,loop
INC seconds
RET again



now i am trying out with simulator only.
 

before starting a code start with algorithms or flowchart etc. for using 4 seven segment, u may require to use timer in interupt which is a bit complicated and before transmiting data to seven segment a code table has to be formed
that depends in what way you have connected the seven segment.

Code: 
org 0h
 CALL INIT

AGAIN:
MOV A,R2
MOV P1,A     
CALL DELAY
INC R2
CJNE R2,#10,AGAIN
MOV R2,#0

JMP AGAIN

INIT:
     MOV TMOD,#11H
	MOV R2,#0

RET
DELAY:
        MOV R7,#10D
	L2: MOV R6,#100D
L1:
	CALL DEL
	DJNZ R6,L1
	DJNZ R7,L2
RET
 
DEL:
	MOV TL1,#7CH
	MOV TH1,#0FCH	
	SETB TR1
	JNB TF1,$
	CLR TR1
	CLR TF1
RET;
 
Reactions: swedha

    S

    swedha

    Points: 2
    Helpful Answer Positive Rating
thank u so much for your reply.
i found this useful.i will try the program and if i have any doubt i will post
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…