Two line LCD double height numbers, possible ???

**spcw1234** · - 8th January 2012, 22:38

This is what I came up with using DT_INTS-18 timer routine. This is with a 2x16 display.

Code:

'****************************************************************
'*  Name    : BigDigitTimer.BAS                                 *
'*  Author  : Shawn Newswanger                                  *
'*  Notice  : Copyright (c) 2012                                *
'*          : All Rights Reserved                               *
'*  Date    : 1/8/2012                                          *
'*  Version : 1.0                                               *
'*  Notes   : PIC18F2221 with internal OSC                      *
'****************************************************************
OSCCON=110000            'SET TO 8 MHZ
define OSC 08               '8MHz oscilator 
define LCD_COMMANDUS 1500   'set command delay in us
define LCD_DATAUS 50        'set data delay in us
define LCD_DREG PORTC       'set LCD data port
define LCD_DBIT 4           'set LCD starting data bit
define LCD_RSREG PORTC      'define RS port
define LCD_RSBIT 2          'define RS bit
define LCD_EREG PORTC       'set LCD ENABLE port
define LCD_EBIT 3           'set LCD ENABLE bit
define LCD_BITS 4           'set LCD bits 4 or 8
define LCD_LINES 2          'set # of LCD rows 2 or 4
clear

ADCON1 = 15 'all digital
CMCON = 7   'turns off comparators 

trisc=0
trisb=0
trisa=0

nPos  var byte
nDig  var byte

'CONFIGURE DISPLAY 
pause 100
ln1 con $80
ln2 con $C0
CS  con 1
pause 500
LCDOUT $FE,1


'Set up the digits (http://www.darreltaylor.com/files/CustChar.htm)
  LCDOUT  $FE,$40,$1F,$1F,$1F,$00,$00,$1F,$1F,$1F  ' Cust Char #0  
  LCDOUT  $FE,$48,$1F,$1F,$1F,$00,$00,$00,$00,$00  ' Cust Char #1  
  LCDOUT  $FE,$50,$00,$00,$00,$00,$00,$1F,$1F,$1F  ' Cust Char #2  
  LCDOUT  $FE,$58,$1F,$1F,$1F,$1F,$1F,$1F,$1F,$1F  ' Cust Char #3  
  LCDOUT  $FE,$60,$00,$0E,$0A,$0E,$00,$00,$00,$00  ' Cust Char #4  
  LCDOUT  $FE,$68,$00,$00,$0E,$0A,$0A,$0E,$00,$00  ' Cust Char #5  
  LCDOUT  $FE,$70,$00,$00,$04,$0A,$0A,$04,$00,$00  ' Cust Char #6  
  LCDOUT  $FE,$78,$00,$00,$00,$00,$00,$00,$00,$00  ' Cust Char #7 

'ELAPSED TIMER
INCLUDE "DT_INTS-18.bas"
INCLUDE "ReEnterPBP-18.bas"
INCLUDE "Elapsed_INT-18.bas"  ; Elapsed Timer Routines

ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler   TMR1_INT,  _ClockCount,   PBP,  yes
    endm
    INT_CREATE            ; Creates the interrupt processor
ENDASM

@   INT_ENABLE  TMR1_INT  ; Enable Timer 1 Interrupts  

GOSUB ResetTime           ' Reset Time to  0d-00:00:00.00
GOSUB StartTimer          ' Start the Elapsed Timer
lcdout $fe, CS            ' Clear screen

MAIN:                     'Display time
  IF secondsChanged = 1 THEN  
     secondsChanged = 0
    nDig=minutes dig 1 : nPos=0 : gosub displaydigit
    ndig=minutes dig 0 : npos=4 : gosub displaydigit
      npos=7 : gosub colon  
    ndig=seconds dig 1 : npos=8 : gosub displaydigit
    ndig=seconds dig 0 : npos=12 : gosub displaydigit
  ENDIF
goto main

displaydigit:
if ndig=0 then gosub zero
if ndig=1 then gosub one
if ndig=2 then gosub two
if ndig=3 then gosub three
if ndig=4 then gosub four
if ndig=5 then gosub five
if ndig=6 then gosub six
if ndig=7 then gosub seven
if ndig=8 then gosub eight
if ndig=9 then gosub nine
return

Zero:
    LCDOUT $FE,$80+nPos,3,1,3
    LCDOUT $FE,$C0+nPos,3,2,3
return

One:
    LCDOUT $FE,$80+nPos,1,3,7
    LCDOUT $FE,$C0+nPos,2,3,2
return

Two:
    LCDOUT $FE,$80+nPos,0,0,3
    LCDOUT $FE,$C0+nPos,3,2,2
return

Three:
    LCDOUT $FE,$80+nPos,1,0,3
    LCDOUT $FE,$C0+nPos,2,2,3
return

Four:
    LCDOUT $FE,$80+nPos,3,2,3
    LCDOUT $FE,$C0+nPos,7,7,3
return

Five:
    LCDOUT $FE,$80+nPos,3,0,0
    LCDOUT $FE,$C0+nPos,2,2,3
return

Six:
    LCDOUT $FE,$80+nPos,3,0,0
    LCDOUT $FE,$C0+nPos,3,2,3
return

Seven:
    LCDOUT $FE,$80+nPos,1,1,3
    LCDOUT $FE,$C0+nPos,7,3,7
return

Eight:
    LCDOUT $FE,$80+nPos,3,0,3
    LCDOUT $FE,$C0+nPos,3,2,3
return

Nine:
    LCDOUT $FE,$80+nPos,3,0,3
    LCDOUT $FE,$C0+nPos,7,7,3
return

colon:
    lcdout $fe,$80+nPos,5
    lcdout $FE,$C0+nPos,5
return

end

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**tasmod** · - 9th January 2012, 13:12

That looks great Shawn for my future projects but not for my timer.
I was incorrect about my display, I used a 2x16 as well but I need to display say, 123.45 so the thinner dual height figures are just what I want. I believe i can't use them anyway.
Melanies code is quite 'timing' critical as it should be, so I think adding the character code lookup would cause it's timing to be incorrect. I need to study it all again when I get time as I made this a year ago. I do believe there's an 'offset' in the code I can use to bring it back to correct timing I just need to experiment.

This is Melanies slightly modified code for seconds and hundreths, this uses a 16f628

Code:

    ' Show Jumping Timer 2011 based on Olympic Timer by Melanie Newman
'       05/Aug/2004
'       Topical Program demonstrates use of Interrupt
'       Driven Background TIMER, to time events down to
'       one one-hundredth of a Second (1/100 Sec).
'
'       Bonus CALIBRATION Feature allows simple adjustments
'       in 360mS steps per hour. This calibration adjustment
'       range is limited to +/- 36 seconds per Hour.
'
'       This program is for 4MHz clock (1uS Timer Ticks).
'
'       PIC Defines
'       ===========
'
'       Change these defines to suit your chosen PIC
'
@ DEVICE  pic16F628, XT_OSC    ' System Clock Options
@ DEVICE  pic16F628, WDT_ON    ' Watchdog Timer
@ DEVICE  pic16F628, PWRT_ON   ' Power-On Timer
@ DEVICE  pic16F628, BOD_ON    ' Brown-Out Detect
@ DEVICE  pic16F628, LVP_OFF   ' Low-Voltage Programming
@ DEVICE  pic16F628, CPD_OFF   ' Data Memory Code Protect
@ DEVICE  pic16F628, PROTECT_OFF
                               ' Program Code Protection
@ DEVICE pic16F628, WRT_OFF    ' Flash Memory Word Enable
'
'       Hardware Defines
'       ================
        '
        '       LCD Display
        '       -----------
        '       Adjust these to suit your chosen LCD pinout
        '
Define LCD_DREG PORTB          ' Port for LCD Data
Define LCD_DBIT 4              ' Use upper 4 bits of Port
Define LCD_RSREG PORTB         ' Port for RegisterSelect (RS) bit
Define LCD_RSBIT 3             ' Port Pin for RS bit
Define LCD_EREG PORTB          ' Port for Enable (E) bit
Define LCD_EBIT 1              ' Port Pin for E bit
Define LCB_BITS 4              ' Using 4-bit bus
Define LCD_LINES 2             ' Using 2 line Display
Define LCD_COMMANDUS 2000
                               ' Command Delay (uS)
Define LCD_DATAUS 50           ' Data Delay (uS)
          '
        '      Control Buttons/Lines
        '      ---------------------
ButStart var PortA.0          ' Take this pin low momentarily to START timing
ButStop var PortA.1           ' Take this pin low momentarily to STOP timing
ButReset var PortA.2          ' Take this pin low momentarily to RESET clock
        '
        '      Hold the RESET Button pressed for at least FIVE seconds
        '      to jump into CALIBRATION Mode
'
'       Software Defines
'       ----------------
BannerOffset var BYTE         ' Variable holding start address of Banner Display
CounterA var BYTE             ' Just a Counter
CounterB var BYTE             ' Just a Counter
CounterC var BYTE
DataA var BYTE
'Hours var BYTE
Hundredths var BYTE
'Minutes var BYTE
OverflowError var BIT
RunningFlag var BIT
Seconds var BYTE
SetupTimeOut var WORD         ' Timeout counter for Calibration/Set-Up Mode
TMR1Cal var BYTE              ' Calibration Value
              TMR1CalAR var Byte             ' Calibration 0=ADVANCE, 1=RETARD
        TMR1RunOn var WORD             ' variable holding TMR1 Run-On value
        '
        '       EEPROM Presets
        '       --------------
        Data @0,0                      ' Advance/Retard Indicator
        Data 0                         ' Calibration Value
        Data "Show Jumping Seconds Timer - Robert Lane 2011"
        '
        '       Software Constants
        '       ------------------
        TMR1CalMax con 100             ' Maximum adjustment (+/-100uS per 10mS interrupt)
        TMR1Preset con $D910           ' 10mS Timer Reload value, offset by 20uS
                                       ' to allow for TMR1 Setting Calculations
        '
        '       Start Program
        '       =============
                '
                '       Initialise Processor
                '       --------------------
        TRISA=000000
        TRISB=000111
        'TRISC=000000
        ADCON0=000000
        ADCON1=000111
        OPTION_REG.7=0                 ' Enable Pull-Up's
        RunningFlag=0                   ' Disable actual Interrupt Time-Keeping
        Pause 1000                     ' Pause for LCD to initialise
                       '
                       '        Silly Intro Banner just for Fun
                       '        -------------------------------
        LCDOut $FE,1                   ' Clear LCD
        BannerOffset=2:Gosub DisplayBanner
        Pause 2000
        For CounterA=0 to 30
                BannerOffset=2+CounterA
                Gosub DisplayBanner
                Pause 150
                Next CounterA
        Pause 1000
                '
                '       Initialise TMR1 Interrupts
                '       --------------------------
        Gosub SetTimer                 ' Set the Timer for next 10mS Interrupt
        On Interrupt goto TickCount
        PIE1.0=1                       ' Enable TMR1 Interrupts
        INTCON.6=1                     ' Enable all unmasked Interrupts
        INTCON.7=1                     ' Enable Global Interrupts
                '
                '       -----------------------------------------------------
                '       Following the above "On Interrupt", no Basic Command
                '       is allowed that takes more than 10mS to execute
                '       otherwise the 10mS Interrupt interval is compromised.
                '       -----------------------------------------------------
                '
                '       Reset Timer Variables for Start
                '       -------------------------------
DisplayReset:
        LCDOut $FE,1                   ' Clear LCD
        Read 0,TMR1CalAR               ' Read Calibration Advance/Retard Indicator
        Read 1,TMR1Cal                 ' Read Calibration Value
        Hundredths=0                   ' Reset Timer Counter variables
        Seconds=0
        'Minutes=0
        'Hours=0
        OverflowError=0
        '
        '       Main Program Loop
        '       =================
        Enable
DisplayLoop:
        If ButStart=0 then RunningFlag=1
        If ButStop=0 then RunningFlag=0
       ' LCDOut $FE,$80,DEC2 Hours,":",DEC2 Minutes,":",DEC2 Seconds,".",DEC2 Hundredths
       LCDOut $FE,$80,DEC2 Seconds,".",DEC2 Hundredths
           If OverflowError=1 then
                If Seconds.0=1 then
                       LCDOut $FE,$8C,"ERR"
                       else
                       LCDOut $FE,$8C,"    "
                       endif
                endif
        If RunningFlag=1 then goto DisplayLoop
        If ButReset=1 then goto DisplayLoop
        Disable
        '
        '       Reset Clock
        '       ===========
        '       Momentarily Press the Reset Button for RESET action.
        '       Continue holding the Reset Button for MORE than 5 seconds
        '       to jump into Calibration/Set-Up Mode
        '
ResetClock:
        LCDOut $FE,1,"Reset OK"
        Pause 1000
        Seconds=1
        While Seconds < 5
                Pause 1000
                If ButReset=1 then goto DisplayReset
                Seconds=Seconds+1
                Wend
        '
        '       Calibration Adjustment
        '       ======================
        '       If No Button is Pressed for 20 Seconds, then the program
        '       will automatically exit Calibration/Set-Up Mode WITHOUT saving
        '       any new values.
        '
        SetUpTimeout=0
Calibration:
        LCDOut $FE,1,"Calibrate: "
        While ButReset=0:Wend          ' Wait for User to release finger
CalibrationLoop:
        LCDOut $FE,$8B
        If TMR1Cal=0 then
                LCDOut " "
                else
                If TMR1CalAR=0 then
                       LCDOut "+"
                       else
                       LCDOut "-"
                       endif
                endif
        LCDOut #TMR1Cal," "
                '       ----------------------------------------------------------
                '       Press Start Button to ADVANCE (speed-up) Clock
                '       Press STOP Button to RETARD (slow-down) Clock
                '       Press RESET Button to SAVE new Calibration Setting
                '       ----------------------------------------------------------
                '       Remember each Calibration 'tick' will advance or
                '       retard the Timing by 1uS in every 10mS period - that's
                '       360mS/Hour per setting. Example: A setting of +8 will
                '       SPEED-UP the Timer by 2.88 Seconds (8 x 360mS) in an Hour.
                '       ----------------------------------------------------------
        If TMR1CalAR=0 then
                If ButStart=0 then Gosub CalAdvance
                If ButStop=0 then Gosub CalRetard
                else
                If ButStart=0 then Gosub CalRetard
                If ButStop=0 then Gosub CalAdvance
                endif
        If ButReset=0 then
                Write 0,TMR1CalAR
                Write 1,TMR1Cal
                LCDOut $FE,1,"Bye Rob"
                Pause 1000
                Goto DisplayReset
                endif
        SetupTimeout=SetupTimeout+1
        If SetupTimeout>200 then goto DisplayReset
        Pause 100
        Goto CalibrationLoop
                '
        '       Subroutine Increments Calibration Value
        '       ---------------------------------------
CalAdvance:
        SetupTimeout=0
        If TMR1Cal=>TMR1CalMax then
                TMR1Cal=TMR1cALmAX
                TMR1CalAR=TMR1CalAR^1
                else
                TMR1Cal=TMR1Cal+1
                endif
        Return
        '
        '       Subroutine Decrements Calibration Value
        '       ---------------------------------------
CalRetard:
        SetupTimeout=0
        If TMR1Cal=0 then
                TMR1Cal=1
                TMR1CalAR=TMR1CalAR^1
                else
                TMR1Cal=TMR1Cal-1
                endif
        Return
        '
        '       Subroutine Displays Banner Intro
        '       --------------------------------
DisplayBanner:
        CounterC=BannerOffset+15
        LCDOut $FE,$80
        For CounterB=BannerOffset to CounterC
                Read CounterB,DataA
                LCDOut DataA
                Next CounterB
        Return
        '
        '       Subroutine Loads TMR1 values
        '       ============================
SetTimer:
        T1CON.0=0                     ' Stop the Clock
        TMR1RunOn.Highbyte=TMR1H       ' Load the Run-On (Over-Run) value (if any)
        TMR1RunOn.Lowbyte=TMR1L
        TMR1RunOn=TMR1Preset+TMR1RunOn
                                      ' Calculate the New (adjusted) value for TMR1
        If TMR1CalAR=0 then            ' Calibration ADVANCE (add) or RETARD (subtract)
                TMR1RunOn=TMR1RunOn+TMR1Cal
                else
                TMR1RunOn=TMR1RunOn-TMR1Cal
                endif
        TMR1H=TMR1RunOn.Highbyte       ' Save new values to TMR1
        TMR1L=TMR1RunOn.Lowbyte
        T1CON.0=1                     ' Restart the Clock
        PIR1.0=0                      ' Reset TMR1's Interupt Flag
        Return
        '
        '       Timer Interrupt Handler
        '       =======================
TickCount:
        Gosub SetTimer                ' Set the Timer for next 10mS Interrupt
        If RunningFlag=1 then          ' If timing actually enabled... then...
                Hundredths=Hundredths+1
                                      ' Increment 10mS Seconds Counter
                If Hundredths>99 then
                       Hundredths=0
                       Seconds=Seconds+1
                       
                        ' Increment the Seconds -- Show Jumping to 500
                       If Seconds>500 then
                               Seconds=0
                               endif
                       
                       
                       
                                      ' Increment the Seconds
                    '   If Seconds>59 then
                     '          Seconds=0
                       '        Minutes=Minutes+1
                                      ' Increment the Minutes
                         '      If Minutes>59 then
                          '            Minutes=0
                            '          Hours=Hours+1
                                      ' Increment the Hours
                        ' If Hours>99 then
                         ' Handle any Overflow
                          '      Hours=0
                         '       OverFlowError=1
                          '      endif
                        ' endif
                  ' endif
             endif
       endif
Resume
End

**spcw1234** · - 9th January 2012, 13:28

Yes these digits are a display hog

They will work well for me since I will be displaying time and temperature.

**rsocor01** · - 9th January 2012, 13:31

Originally Posted by spcw1234

This is what I came up with using DT_INTS-18 timer routine. This is with a 2x16 display.

Code:

'****************************************************************
'*  Name    : BigDigitTimer.BAS                                 *
'*  Author  : Shawn Newswanger                                  *
'*  Notice  : Copyright (c) 2012                                *
'*          : All Rights Reserved                               *
'*  Date    : 1/8/2012                                          *
'*  Version : 1.0                                               *
'*  Notes   : PIC18F2221 with internal OSC                      *
'****************************************************************
OSCCON=110000            'SET TO 8 MHZ
define OSC 08               '8MHz oscilator 
define LCD_COMMANDUS 1500   'set command delay in us
define LCD_DATAUS 50        'set data delay in us
define LCD_DREG PORTC       'set LCD data port
define LCD_DBIT 4           'set LCD starting data bit
define LCD_RSREG PORTC      'define RS port
define LCD_RSBIT 2          'define RS bit
define LCD_EREG PORTC       'set LCD ENABLE port
define LCD_EBIT 3           'set LCD ENABLE bit
define LCD_BITS 4           'set LCD bits 4 or 8
define LCD_LINES 2          'set # of LCD rows 2 or 4
clear

ADCON1 = 15 'all digital
CMCON = 7   'turns off comparators 

trisc=0
trisb=0
trisa=0

nPos  var byte
nDig  var byte

'CONFIGURE DISPLAY 
pause 100
ln1 con $80
ln2 con $C0
CS  con 1
pause 500
LCDOUT $FE,1


'Set up the digits (http://www.darreltaylor.com/files/CustChar.htm)
  LCDOUT  $FE,$40,$1F,$1F,$1F,$00,$00,$1F,$1F,$1F  ' Cust Char #0  
  LCDOUT  $FE,$48,$1F,$1F,$1F,$00,$00,$00,$00,$00  ' Cust Char #1  
  LCDOUT  $FE,$50,$00,$00,$00,$00,$00,$1F,$1F,$1F  ' Cust Char #2  
  LCDOUT  $FE,$58,$1F,$1F,$1F,$1F,$1F,$1F,$1F,$1F  ' Cust Char #3  
  LCDOUT  $FE,$60,$00,$0E,$0A,$0E,$00,$00,$00,$00  ' Cust Char #4  
  LCDOUT  $FE,$68,$00,$00,$0E,$0A,$0A,$0E,$00,$00  ' Cust Char #5  
  LCDOUT  $FE,$70,$00,$00,$04,$0A,$0A,$04,$00,$00  ' Cust Char #6  
  LCDOUT  $FE,$78,$00,$00,$00,$00,$00,$00,$00,$00  ' Cust Char #7 

'ELAPSED TIMER
INCLUDE "DT_INTS-18.bas"
INCLUDE "ReEnterPBP-18.bas"
INCLUDE "Elapsed_INT-18.bas"  ; Elapsed Timer Routines

ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler   TMR1_INT,  _ClockCount,   PBP,  yes
    endm
    INT_CREATE            ; Creates the interrupt processor
ENDASM

@   INT_ENABLE  TMR1_INT  ; Enable Timer 1 Interrupts  

GOSUB ResetTime           ' Reset Time to  0d-00:00:00.00
GOSUB StartTimer          ' Start the Elapsed Timer
lcdout $fe, CS            ' Clear screen

MAIN:                     'Display time
  IF secondsChanged = 1 THEN  
     secondsChanged = 0
    nDig=minutes dig 1 : nPos=0 : gosub displaydigit
    ndig=minutes dig 0 : npos=4 : gosub displaydigit
      npos=7 : gosub colon  
    ndig=seconds dig 1 : npos=8 : gosub displaydigit
    ndig=seconds dig 0 : npos=12 : gosub displaydigit
  ENDIF
goto main

displaydigit:
if ndig=0 then gosub zero
if ndig=1 then gosub one
if ndig=2 then gosub two
if ndig=3 then gosub three
if ndig=4 then gosub four
if ndig=5 then gosub five
if ndig=6 then gosub six
if ndig=7 then gosub seven
if ndig=8 then gosub eight
if ndig=9 then gosub nine
return

Zero:
    LCDOUT $FE,$80+nPos,3,1,3
    LCDOUT $FE,$C0+nPos,3,2,3
return

One:
    LCDOUT $FE,$80+nPos,1,3,7
    LCDOUT $FE,$C0+nPos,2,3,2
return

Two:
    LCDOUT $FE,$80+nPos,0,0,3
    LCDOUT $FE,$C0+nPos,3,2,2
return

Three:
    LCDOUT $FE,$80+nPos,1,0,3
    LCDOUT $FE,$C0+nPos,2,2,3
return

Four:
    LCDOUT $FE,$80+nPos,3,2,3
    LCDOUT $FE,$C0+nPos,7,7,3
return

Five:
    LCDOUT $FE,$80+nPos,3,0,0
    LCDOUT $FE,$C0+nPos,2,2,3
return

Six:
    LCDOUT $FE,$80+nPos,3,0,0
    LCDOUT $FE,$C0+nPos,3,2,3
return

Seven:
    LCDOUT $FE,$80+nPos,1,1,3
    LCDOUT $FE,$C0+nPos,7,3,7
return

Eight:
    LCDOUT $FE,$80+nPos,3,0,3
    LCDOUT $FE,$C0+nPos,3,2,3
return

Nine:
    LCDOUT $FE,$80+nPos,3,0,3
    LCDOUT $FE,$C0+nPos,7,7,3
return

colon:
    lcdout $fe,$80+nPos,5
    lcdout $FE,$C0+nPos,5
return

end

Attachment 6218

Nice code and well organized code structure. Thanks for sharing.

Robert

**SKOLS1** · - 9th January 2012, 18:32

where I can find this bas files:

INCLUDE "DT_INTS-18.bas" INCLUDE "ReEnterPBP-18.bas" INCLUDE "Elapsed_INT-18.bas"

thanks

**spcw1234** · - 9th January 2012, 19:00

Originally Posted by SKOLS1

where I can find this bas files:

INCLUDE "DT_INTS-18.bas" INCLUDE "ReEnterPBP-18.bas" INCLUDE "Elapsed_INT-18.bas"

thanks

http://darreltaylor.com/DT_INTS-18/home.html

**tasmod** · - 9th January 2012, 19:07

Shawn, you've copyrighted and reserved the rights. Is it all right with you that I modify it and put it on here ?

**spcw1234** · - 9th January 2012, 19:13

Originally Posted by tasmod

Shawn, you've copyrighted and reserved the rights. Is it all right with you that I modify it and put it on here ?

Copy all you want, most of the code was copied off of this site as it is already!

**tasmod** · - 9th January 2012, 19:27

Thanks, it's just that normally I wouldn't add the copyright notice for anything for open source public consumption.

I'm trying to use just the seconds and 'ticks'

Thread: Two line LCD double height numbers, possible ???

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