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Hi all. New to this forum. Tried a search but did not find any answer to my current design task.
My current application is using the pic 16f876a displaying user data onto an Optrex 2x16 display. I would like to display a couple of custom characters, which in the Optrex manual seems to allow, by using the CG RAM area.
I have not been able to find any command in the LCDOUT command that allows me to send data to this RAM area.
Has anyone here tried this before and if so, some code example?
Thanks!
Hi badrad,
LCDOUT $FE,$60,$02,$06,$1a,$1a,$1a,$06,$02,$00
LCDOUT $FE,$78,$06,$0f,$0f,$0f,$0f,$0f,$0f,$00
The first line writes a "speaker" character to CGRAM address 4 and the last writes a "battery" to CGRAM addess 7.
To use the character you just write......
LCDOUT $04 'will write the "speaker" symbol.
The addresses(characternumber) are the numbers located right after the $FE.
character 0 = $40
character 1= $48
character 2 = $50
character 3= $58
character 4 = $60
character 5= $68
character 6 = $70
character 7= $78
The character itself is made up by the rest of the numbers following the address. Can't remeber if the bits are arranged horizontally or vertically. Draw it on a paper and have a look.
/Ingvar
Ingvar,
thanks ever so much, that worked out well. that has really save me so much time from having work it all out.
I wanted to display some smiley faces and sad faces on the unit that I have built for kindergarten and primary school kids so that they can learn about energy, without having to deal with large numbers and such.
thanks again.
badrad
No worries,
The image of happy kids in my mind makes it worth the effort, all three minutes of it ;-)
Cheers
/Ingvar
BTW, here is smiley and sad face symbol that i am trying out.
LCDOUT $FE,$60,$00,$0a,$0a,$00,$00,$11,$0e,$00 'smiley symbol
LCDOUT $FE,$78,$00,$0a,$0a,$00,$00,$0e,$11,$00 'sad symbol
many thanks again!
ps: the only problem with image of the happy kids was there were 60+ in each classroom, as we had to double up classes for the labs! there was so much energy in that small classroom and they were all so enthusiatic!
badrad
Hi,
I have used the character calculator at http://www.geocities.com/dinceraydin/lcd/charcalc.htm to draw some symbols, but cant understand how to implement the in picbasic pro. How did you arrive at those values for the battery symbol?
Sorry if its a stupid question!
Thanks,
Anthony
Hi Anthony,
There are 8 Custom Character locations. The location is selected by sending a command with the following format.
%01xxx000 where xxx is the location 0-7
location 0 = %01000000 = $40 = 64
location 1 = %01001000 = $48 = 72
location 2 = %01010000 = $50 = 80
location 3 = %01011000 = $58 = 88
location 4 = %01100000 = $60 = 96
location 5 = %01101000 = $68 = 104
location 6 = %01110000 = $70 = 112
location 7 = %01111000 = $78 = 120
The location is followed by 8 bytes of character data. Each byte represents 1 row of 5 dots from left to right. The upper 3 bits are ignored. You need to send all 8 rows, even if the character doesn't use them all.
The 8th row is normally reserved for the Cursor.
Using the examples from Ingvar & badrad you get these characters
http://www.pbpgroup.com/files/CustomChars.GIF
To use the values from the Custom Character Generator you mentioned. You can either use the values that it creates, or you can subtract 128 to get values that resemble the examples here. The upper 3 bits of each byte is ignored by the display, so it will work either way.Code:Speaker LCDOUT $FE,$60,$02,$06,$1a,$1a,$1a,$06,$02,$00
$02=%00010 X
$06=%00110 XX
$1a=%11010 XX X
$1a=%11010 XX X
$1a=%11010 XX X
$06=%00110 XX
$02=%00010 X
$00=%00000
battery LCDOUT $FE,$78,$06,$0f,$0f,$0f,$0f,$0f,$0f,$00
$06=%00110 XX
$0f=%01111 XXXX
$0f=%01111 XXXX
$0f=%01111 XXXX
$0f=%01111 XXXX
$0f=%01111 XXXX
$0f=%01111 XXXX
$00=%00000
smiley LCDOUT $FE,$60,$00,$0a,$0a,$00,$00,$11,$0e,$00
$00=%00000
$0a=%01010 X X
$0a=%01010 X X
$00=%00000
$00=%00000
$11=%10001 X X
$0e=%01110 XXX
$00=%00000
Sad LCDOUT $FE,$78,$00,$0a,$0a,$00,$00,$0e,$11,$00
$00=%00000
$0a=%01010 X X
$0a=%01010 X X
$00=%00000
$00=%00000
$0e=%01110 XXX
$11=%10001 X X
$00=%00000
HTH,
I was just playing around with Ingvar's battery icon, and thought this was pretty neat.
It allows you to show the battery level with the same icon.
The demo just runs thru a loop counting backwards from 10, and changes the Custom Character accordingly.
It also demonstrates how you can animate the characters by simply updating the CGRAM.
Any characters that are already on the screen will automatically be updated as well.
http://www.pbpgroup.com/files/Battery.gifDarrelCode:BattLevel var byte ' 0 - 10, 0=Empty 10=Full
Char var byte
y var byte
LCDout $FE,1," ",1," ",1," ",1," ",1 ' Show 4 batteries
Loop: ' Test loop showing all the possible Battery Levels
for BattLevel = 10 to 0 step -1
gosub ShowBattery
pause 500
next BattLevel
goto Loop
ShowBattery: ' Show Battery Level 0 - 10, 0=Empty 10=Full
lcdout $FE,$48,$06
for y = 5 to 1 step -1
if BattLevel >= (y * 2 - 1) then
if BattLevel >= (y * 2) then
Char = $0F
else
Char = $0B
endif
else
Char = $09
endif
lcdout Char
next y
lcdout $0F,$00
return
Thanks for the really clear explanation, got it working straight away!
Many thanks..
Anthony
I use
OPTREX hd4470A0 LCD
16f877A (4mhz)
pbp2.45
I can't display this string , whats wrong ?
LCDOUT $FE,$60,$00,$0a,$0a,$00,$00,$11,$0e,$00 'smiley symbol
Hi swordman,
Sending that string will define the Custom Character at location number 4. Then to actually display the character use this.
LCDOUT 4
HTH,
Darrel
Thanks Darrel !
Working fine
Hi,
How can I display 2 custom char like this:
Lcdout $FE,$85,4
LCDOUT $FE,$60,$1F,$11,$11,$11,$11,$11,$11,$0
Lcdout $FE,$C2,4
LCDOUT $FE,$78,$3,$5,$9,$9,$9,$11,$11,$0
when I write that code lcd display only second
Hi Swordman,
The second example uses Address $78 which is Location 7.
To display that Custom Character use this
<font="courier">Lcdout $FE,$C2,7</font>
Darrel
This is fun!
Here are 3 more:
lcdout $FE,$60,$1F,$11,$15,$17,$17,$15,$11,$1F 'copyright sign
lcdout $FE,$70,$0E,$11,$11,$11,$0E,$04,$0E,$04 'female symbol
lcdout $FE,$78,$07,$03,$05,$08,$0E,$11,$11,$0E 'male symbol
Lcdout $FE, $D4, 4, 6, 7
and the tool to create them + PBP code easy... PicMultiCalc... once again ;)
http://www.mister-e.org/pages/utilitiespag.html
<img src="http://www.picbasic.co.uk/forum/attachment.php?attachmentid=1404&stc=1&d=117207765 7">
You're such a stud Steve.Quote:
and the tool to create them + PBP code easy... PicMultiCalc... once again
http://www.mister-e.org/pages/utilitiespag.html
LMAO, not sure of the meaning of this 'stud' expression but... thanks :D
To me it's sounds x-rated... but since too much time i'm single so :D
:eek: ooooooooooohhhhhhhhhhhhhh no.... sorry buddy, I'm married. How about "You The Man"..... uhm... maybe "You Rock". What I mean to say is that is cool. Keep on adding to your PicMultiCalc and eventually you'll end up with one heck of an IDE/compiler.Quote:
Originally Posted by MisterE
Don't worry, i prefer ladies anyways :D After having ruining Darrel's life and bank account (and or credit card) with the USBDemo and by suggesting him another compiler... i try to stay away of any potential problem... yeah i try. I'm sure Darrel will survive so far.
__________________________________________________ __________________________________________
well i have some plan to extend the PicMultiCalc, 'till now it's still a dream and a big work in progress when i find some new idea, time, courage etc etc etc... hence why it's still stated WIP version in the about menu.
I still consider any idea when there's some coming in my e-mail.
And, Lest we forget...
http://www.pbpgroup.com/files/CustChar.JPG
http://www.picbasic.co.uk/forum/showthread.php?t=2598
P.S. That guy's got a problem with his thingy. :eek:
Even if simple, it's funny what we can do with few minutes and the right software. So thisQuote:
P.S. That guy's got a problem with his thingy.
<embed src="http://www.mister-e.org/Wav/Viagra_Forum.mp3" autostart=false loop=false>may help this guy to have at least $04, $0E, $15, $04, $0E, $11, $11, $0E
:D
I think you were right, before you changed your post mister_e.
A little viagra might help ..... let's see ....
http://www.pbpgroup.com/files/ViagraChar.gif
But I think yours might have a lower risk of heart attack ...
http://www.pbpgroup.com/files/Male2.gif
<br>
Ooh, you people, are unbelievable!!!
Just for the history, the symbols are ancient greek ones and were used to symbol the man (holding his shield and arrow) and the woman she used and still holds the mirror (circle and handle).
Now I hear few asking, did ancient greeks have mirrors? No, they did not had glass mirrors. They had metal mirrors from silver or brass.
Ioannis
Brilliant, DT
Why i had the feeling tat Darrel was building something like that yesterday :D
Well done!
RE: History Lesson...
Yes those funny Ancient Greeks. Called them the "Shield of Mars" and the "Mirror of Venus".
But we know what they were really thinking of. :)
http://www.pbpgroup.com/files/MFsym.gif
hi
thanks mister-e, here is direct link:
PICMultiCalc:
All you need to calculate PIC Timers, PWM, USART, EUSART, ADC, Comparator register value in few clicks!
USART, EUSART, A/D and LCD custom character provide a code generation tool for Melabs PICBASIC PRO.
http://www.mister-e.org/files/picmulticalc_v_1_3_1.zip
with best regards
What the.....????Quote:
Originally Posted by Mostafa
Gee...I wonder who wrote that program...
see also:Quote:
Originally Posted by skimask
http://www.picbasic.co.uk/forum/show...s%22#post34133
-Adam-
I am impressed with the amount of work that has been put into this thread already.
I have used the custom character generator Darren Taylor posted and it works great!
I would like to now place my custom characters on the line of my choice for my 4x20. As far as I know my Truly 4x20 lcd has 4 rows and 8 colums for custom characters.
Can I simply add on to your custom character generator line with , 128, 192,148, or 212 to choose the start position?????
thanks
The LCD only has 8 locations for custom characters, and those locations don't relate to any specific rows or columns.Quote:
Originally Posted by earltyso
Once you've sent a custom character to the LCD, it can be used any number of times, anywhere on the screen.
For instance, this line creates the Smiley Face in the LCD's CGRAM at location 4 ($60).
and this will fill your display with smiley faces.Code:LCDOUT $FE,$60,$00,$0a,$0a,$00,$00,$11,$0e,$00 ; #4 Smiley Face
Or this will do the same thing as the FOR/NEXT loopCode:LoopCount VAR BYTE
FOR LoopCount = 1 to 80
LCDOUT 4
NEXT LoopCount
LCDOUT REP 4\80
<hr>
If you always wanted to start in the first column of each row, those would work.Quote:
... 128, 192,148, or 212 to choose the start position?????
You can also add an "offset" to those numbers to specify the column.
HTH,Code:Row1 CON 128
Row2 CON 192
Row3 CON 148
Row4 CON 212
LCDOUT $FE,$60,$00,$0a,$0a,$00,$00,$11,$0e,$00 ; #4 Smiley Face
LCDOUT $FE,Row3+10, 4 ; Put a smiley in the middle of Row 3
Darren,
Thanks, I got it now. Keep up the good work!
Hey everyone,
I thought I would try contribute instead of just take from this great forum.
Here are 2 symbols I came up with for the Holidays using Darren's Character generator.
Both require 4x20 LCD of space.
I also figured out that you can redefine 8 custom characters as many times as you want...in loops only. You just have to be careful about how you go back and forth between the loops.
enjoy
halloween:
LCDOUT 254,64,8,17,3,7,15,15,29,29 ' Cust Char #0 PUMPKIN
LCDOUT 254,72,12,31,31,14,31,31,27,27 ' Cust Char #1
LCDOUT 254,80,2,17,24,28,30,30,23,23 ' Cust Char #2
LCDOUT 254,88,29,30,14,7,7,19,8,0 ' Cust Char #3
LCDOUT 254,96,31,21,21,0,10,31,31,0 ' Cust Char #4
LCDOUT 254,104,23,15,14,28,28,25,2,0 ' Cust Char #5
LCDOUT 254,112,8,16,10,6,1,1,6,8 ' Cust Char #6 PUMPKIN VINE
lcdout 254, 1
lcdout $FE,Row1+3, 6
LCDOUT $FE,Row2+2, 0
LCDOUT $FE,Row2+3, 1
LCDOUT $FE,Row2+4, 2," Happy "
LCDOUT $FE,Row3+2, 3
LCDOUT $FE,Row3+3, 4
LCDOUT $FE,Row3+4, 5," Halloween "
pause 5000
goto halloween
christmas:
LCDOUT 254,64,4,8,7,31,3,8,4,0 ' Cust Char #0 Christmas Star
LCDOUT 254,72,14,27,17,0,17,27,14,14 ' Cust Char #1
LCDOUT 254,80,4,2,28,31,24,2,4,0 ' Cust Char #2
LCDOUT 254,88,4,4,4,21,21,4,14,14 ' Cust Char #3
LCDOUT 254,96,14,14,14,4,4,4,21,21 ' Cust Char #4
LCDOUT 254,104,21,4,4,4,4,4,0,0 ' Cust Char #5
lcdout 254, 1
lcdout $FE,Row1+3, 3
LCDOUT $FE,Row2+2, 0
LCDOUT $FE,Row2+3, 1
LCDOUT $FE,Row2+4, 2," MERRY "
LCDOUT $FE,Row3+3, 4," CHRISTMAS"
LCDOUT $FE,Row4+3, 5
pause 5000
goto christmas
:D nice job earltyso!
Hi, i have written this program to make custom character on 2*16 LCD but LCD shows nothing.i use picbasic pro and PIC16F877A. what's the problem?
define OSC 4
' Set LCD Data port
DEFINE LCD_DREG PORTC
' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_DBIT 4
' Set LCD Register Select port
DEFINE LCD_RSREG PORTC
' Set LCD Register Select bit
DEFINE LCD_RSBIT 1
' Set LCD Enable port
DEFINE LCD_EREG PORTC
' Set LCD Enable bit
DEFINE LCD_EBIT 0
' Set LCD bus size (4 or 8 bits)
DEFINE LCD_BITS 4
' Set number of lines on LCD
DEFINE LCD_LINES 2
'Making lcd ready
pause 100
lcdout $fe,1
m var byte
n var byte
m=25
n=98
lcdout $fe,$40,$08,$04,$02,$01,$01,$02,$04,$08
lcdout $fe,$14
lcdout $fe,$00,$00,$07,$07,$1F,$00,$00,$00
lcdout $fe,$14
lcdout $fe,$04,$04,$04,$04,$07,$00,$00,$00
lcdout $fe,$14
lcdout ":",#m,".",#n
end
If you study post #2 of this thread, you'll find your problem...Quote:
Originally Posted by amindzo
i have studied that post but i still have problem. post 2 just specify the 8 location but LCD is 2*16.what about other locations?
The 8 locations are memory locations in the LCD.Quote:
Originally Posted by amindzo
Take a look at post #32
Copy that code.
If you had studied post #2 (and the rest of the posts), you'd notice that you can only program the first 8 locations in the LCD's ram.Quote:
Originally Posted by amindzo
You may be setting up the first few custom characters in the LCD ram, but you surely aren't trying to display them...