Project: Digital Clock using MC68HC11 (in assembly language)

[snorazizul]

project assembly digital clock

Hello,
I need help, I want to make digital clock using 68HC11 and LCD but I need some basic module to start. I want to know how to control LCD using 68HC11 microcontroller?

anybody please send me example of program that control LCD using this 68HC11 microcontroller. (just in Assembly language)


Thank u

 

[Baron3D]

digital clock using mc68hc11

Hi, this may help.

*       LCD1.ASM
portb   equ      $1004
portc   equ      $1003
ddrc    equ      $1007

start   clr      portc
        ldaa     #240
        staa     ddrc
        jsr      lcdinit

        bsr      go
        bra      *

go      ldx      #text1
textut  ldaa     0,x
        beq      texend
        bsr      lcddata
        inx
        bra      textut
texend  rts


lcdcom  staa     portb
        clra
        bra      strba

lcddata staa     portb
        ldaa     #%01000000

strba   staa     portc
        oraa      #%00010000
        staa     portc
        ldaa     #%11101111
        anda     portc
        staa     portc

        ldy      #30
        bra      paus

p5m     ldy      #2000
paus    dey
        bne      paus
        rts

lcdinit bsr      lints
        bsr      lints
        bsr      lints

lcdclr  ldaa     #%00000001
        bsr      lintb
        ldaa     #%00111000
        bsr      lcdcom
        ldaa     #%00001100
        bsr      lcdcom
        ldaa     #%00000110
        bsr      lcdcom
        rts

lints   ldaa     #%00110000
lintb   bsr      lcdcom
        bsr      p5m
        rts


text1   fcc      'EDAboard'        
        fcb      0

 

[snorazizul]

mc68hc11 projects

Thank u


Im still need to know how u declare the no of line and no of character

 

[Baron3D]

project of mc68hc11

line0	equ 	128
line1	equ 	192

	ldaa	#line_no + char_no   
	jsr	lcdcom

example:

	ldaa	#line1	+ 5   
	jsr	lcdcom

Places the cursor at second line and fifth character.

(PortB=data0-7, PortC bit6=RS, PortC bit5=W/R, PortC bit4=E)

 

[snorazizul]

digital project of using assembled language

thank u

just want to know, can u give me the circuit of your project. I think I use 48pin 6811

ora #%00010000 (WHAT IS THIS INSTRUCTION)

 

[Baron3D]

mc68hc11

Sorry it should be "oraa #%00010000"

I have used this code in many designs, but I can't find any schematic for the moment.

 

[Baron3D]

mc68hc11 48 pin

Here comes one of my constructions, a generic network unit.
It is designed to be a part of a, low cost, networked alarm and information system.

The zip contains schematic and component layout.