Have you, or anyone else done anything with the backlight so that it can be adjusted dynamically? Everytime I change the value (1-32) I have to reinitialize the display, which causes a very annoying screen flicker.
I'd like to just change the value and have the display adjust the backlight only. That way, I could implment a software controlled ambient light sensor (with the user being able to set the gain.)
I too searched the listing but it seemed fixed at the moment. Probably on a 'things to do' list?
I don't need to adjust BL for now; but once I get on batteries (might be a while the way things are progressing for me), I'll sure want to conserve them.
Bill, the backlight can be changed easily... The backlight level is a variable whose address is passed to the LCD driver. The driver checks this value very often and adjusts the backlight if changed. I don't think there should be any flicker when changing backlight level...
You can just move the Spin code that sets the brightness at the end of the start methode to it's own public methode. Then it will be possible to change this when ever you want by calling this methode.
Bill (Henning)
My Board draws ~150 mA and I power it always from an USB port. I think the PSB has a similar current consumption.
Ariba said...
You can just move the Spin code that sets the brightness at the end of the start methode to it's own public methode. Then it will be possible to change this when ever you want by calling this methode.
That was too easy!!! Thanks Andy!!!
Hey all, here is the simple method I added to Andy's Full Screen Graphics Driver to allow dynamic blacklighting adjustments.
Bill, I'm not sure Spin is fast enough to set the backlight correctly... The PSB and PTP assembly drivers set the backlight at assembly speed during the blanking period of the display. Your spin method may kinda work, but may not work exactly like you think... Anyway, that was my experience.
Doing some tests, it works perfectly. I built a slider that allows the user to drag a thumb across the screen. I used the TouchX value divided by 100. I then trimmed that to 1-32 to fit the parameter range. I found that if I didn't trim it, it would cause the display to shut down.
Now, when I drag the thumb, it does a beautiful job of changing it depending on where you drag the thumb.
EDIT:· By the way, it works because the spin code is the only code that is twiddling the bits for the backlight pin, which is obviously on a different cog then the display driver itself.· Andy's driver doesn't do anything to that pin after the initial spin startup.
Ran out of breakout boards and decided to improve the layout before ordering more... Test run of new boards checks out (and on way to GadgetGangster.com) and so will be ordering a bunch more now.
The only non-cosmetic change was to reduce the spacings between mounting holes. This is because the blade that I cut the boards apart with is much thicker than originally anticipated. Also, I've made a lot of cosmetic improvements. Here's a pic:
I built a slider that allows the user to drag a thumb across the screen. I used the TouchX value divided by 100. I then trimmed that to 1-32 to fit the parameter range. I found that if I didn't trim it, it would cause the display to shut down.
Now, when I drag the thumb, it does a beautiful job of changing it depending on where you drag the thumb.
Bill
Bill- are you willing/able to share your code for this? I have one of Rayman's touch-screen units and I'm having trouble getting off square one. I'm not very familiar with graphics and bitmaps but I'm working on it. Having an example that adjusts the brightness could be really educational.
That would be great. I think I need another way of looking at things to help me understand what's going on. I have the PTP board from Rayman. If that's what you've got too, it should be as simple as downloading your code to the platform to see what it does. I can then work through the code to see how you manage it.
The application I'd like to write is pretty straight forward. Just some menus (text based would be a fine first pass). But getting text boxes (or better yet) small buttons to go where I want and be the color I want AND respond to buttons hasn't worked so far.
I have to admit that Bill's slider sounds pretty cool- downright iPhone like.
Bill- are you willing/able to share your code for this?
Sure, Peter.
The following code is used to read the screen touch location... and if it is within the lower portion of the screen, then I display the text for the slider.
The user slides their finger across the text and I simply read the position of their finger.
'get current touch screen location and pressure
touchx := i2c.gettouchx/16
touchy := i2c.gettouchy/16
touchz := i2c.gettouchz1/1000'if the pressure is greater than 10, then show sliderif touchz>10
gr.text(0, -25, string("<-- Brightness -->"))
if touchY > 3000'are they touching the bottom line?
newBrightness := (touchx/100) 'set brightness to 1/100 scale of touch pointif (newBrightness =< 0) 'make sure brightness stays within bounds
newBrightness := 1if (newBrightness => 33)
newBrightness := 32
newBrightness := 33 - newBrightness
oldBrightness := newBrightness 'store for future useifnot (Brightness == newBrightness) 'if they changed... then change display
Brightness := newBrightness
lcd.AdjustBrightness(Brightness)
This is the code for the "AdjustBrightness" method I added to the "TSD_GraphicsDriver" that Andy Schenk wrote for the 4.3" display.
Thanks for sharing. That looks pretty straight forward. I'm supposed to be packing the van and 3 kids for a trip to grandma's. When I get back I'll test it out.
Sorry about the slowness on this matter. For some reason I am unable to transfer the archived file from Windows to my Mac. Wasted too much time trying to fix the problem, so decided I'd just copy from Prop tool to the Mac to let you access it.
Hope this is useful. I was hoping to include Basic with the file but never got that far; thus the file name is a bit confusing.
{{+-----------------------------------------------------+
| Touch-sscreen Basic -TsB by hasdesignn 18 Sep.2010 | rev. 11:17 am 6 Oct.2010
+-----------------------------------------------------+
'PSB Graphics Demo (C) Copyright 2009 Rayslogic.com, LLC
'Based on the Propeller Graphics and Paint ! demos adapted for the PSB Screen }}
CON_clkmode = xtal1+pll16x_clkfreq = 80_000_000
QU = 34'LCD is 480x272 giving 30x17 tiles; divide by 16 for Parallax font)
cols = 30
rows = 17
screensize = cols * rows ' = 510 tiles'Constants for Graphics Demo _stack = ($3000 + 100) >> 2'accomodate display memory and stack
x_tiles = 30'16
y_tiles = 17'12
paramcount = 14
bitmap_base = $5000' was $2000 no double buffer
display_base = $5000
lines = 5
thickness = 2
GraphicsXOffset=6' NEEDED ???
GraphicsYOffset=3VARlong lcd_status 'status: off/visible/invisible read-only (5 contiguous longs)long lcd_enable 'enable: off/on write-onlylong lcd_videobase 'video base @word write-onlylong lcd_colorbase 'color base @long write-onlylong lcd_backlight 'Used to control LCD backlightlong col, row, color, tilex, tiley, colU, rowU
long boxcolor,ptr
'vars for Graphics Demolong mousex, mousey
long touchx, touchy
' long touchx0,touchdx,touchy0,touchdy 'cal factorslong CurrentColor, bLineMode, bStillDown, LastX, LastY
word screen[screensize]
'for custom charactersword user_charbase
byte colorA, colorB, flagReg, Char, Indexx ' lagReg: lsb = 'cap'key ON; byte x[lines], y[lines], xs[lines], ys[lines]
OBJ
lcd : "PSB_LcdDriver"'Modified to drive 4.3" TFT
i2c : "PSB_i2cDriver"' Rokicki & Dummer's i2c
gr : "graphics"' Chip Graecey's object' kbd : "Keyboard" ' Ps/2 keyboard' mouse : "mouse"
fsrw : "fsrw"'' sd2 : "SD2.0_FATEngine" 'Kye's SD card enginePUBMain'Start up Display'clear screen
print($100) ' show black on silver'start driver
lcd_enable:=1
lcd_videobase := @screen
lcd_colorbase := @vgacolors
lcd_backlight:= 22'1=bright, 16=medium, 32=dark
lcd.start(@lcd_status)
i2c.initialize 'init touch controller ' TSC2003 touch ICrepeat20
i2c.GetTouchX
GraphicsDemo
PUBGraphicsDemo|i,j,k,dx,dy, kk, pp, pq, rr, numx, numchr,GraphicsColor' modified repeat
print($110)
print($100)
printStr(string("KeyBd,Color,Calibrate"))
WaitStylusDown(true)
if tiley < 3if tilex < 5
TouchKeyBd
if (tilex < 11) and (tilex > 5)
ColorDial
if (tilex < 21) and (tilex > 11)
CalibrateTouchScreen
PUBcolorDial | i
colorB := coloReg1
colorA := coloReg1 >> 8repeat
print($100)
print($11F)
row := 1repeat i from0to7
printStr(string("The Parallax PROPELLER is # 1 "))
colorLong
WaitStylusDown(true)
ifina[lcd#TouchIrqPin]==0
UpdateColor
WaitStylusUp
Waitcnt(cnt+clkfreq/2)
PUBUpdateColorif (Tilex < 8) and (tiley > 12)
if tiley < 15if (tilex == 0)
colorA := ColorA + $10if (tilex == 1)
colorA := ColorA + 1if (tilex == 6)
colorB := ColorB + $10if (tilex == 7)
colorB := ColorB + 1elseif (tilex == 0)
colorA := ColorA - $10if (tilex == 1)
colorA := ColorA - 1if (tilex == 6)
colorB := ColorB - $10if (tilex == 7)
colorB := ColorB - 1
coloReg1 := colorA<<24 + colorB<<16 + colorA<<8 + colorB
coloReg2 := colorA<<24 + colorA<<16 + colorB<<8 + colorB
colorLong
PUBcolorLong
print($110)
col := 0
row := 13
hex (coloReg1,8)
col := 0
row := 15
hex (coloReg2,8)
PUBTouchKeyBd{{ (272 lines/16 =) 17 tiles high provides 2 data entry lines w/blue background,4 lines display
standard ASCII keyboard layout black on silver, w/ spacebar,control keys in white on green
except for 'cap' key in white on red when locked. When 'cap' has green baclground keys are
lower-case, capitaized when red background. Touch 'sft' prior to each single capital letter;
touch cap' for multiple capital letters. }}
flagReg := 1' repeat
print($111) ' heading white/yellow on blue
print($100)
col :=0'
row := 0
colU :=0
rowU :=0
printStr(string(" Touchscreen Basic "))
printStr(string(" 6 Oct.2019 "))
printStr(string(" "))
printStr(string(" "))
repeatif ((tilex == 0) and (tiley==16)) ' DEBUG controlif (flagReg & $80) > 1
flagReg := flagReg & $7Felse
flagReg := flagReg | $80if ((tilex >25) and (tiley==16)) ' backlight controlif (tilex < 28) and (lcd_backlight < 32)
lcd_backlight := lcd_backlight + 1elseif (tilex > 27) and (lcd_backlight > 1)
lcd_backlight := lcd_backlight - 1
ShowKeys
DecodeKey
if flagReg & $80 > 0
print($114) ' white on black for DEBUG data
col := 18
row := 0
PrintStr(string("Index=")) ' show pixel x,y of touch position
hex(Indexx,2)
{{ PrintStr(string("touchx=")) ' show pixel x,y of touch position
dec(touchx)
col := 18
row := 2
PrintStr(string("touchy="))
dec(touchy) }}
col := 18
row := 4
PrintStr(string("tilex=")) ' show Tile number
dec(tilex)
col := 18
row := 6
PrintStr(string("tiley="))
dec(tiley)
col := 18' show flag register value
row := 8
PrintStr(string("flagReg="))
hex(flagReg,2)
col := 18' show BL value
row := 10
PrintStr(string("BL="))
dec(lcd_backlight)
col := 18' show 'Char' value
row := 12
PrintStr(string("Ch="))
hex(Char,2)
print($20)
print(Char)
Waitcnt(cnt+clkfreq/2)
WaitStylusUp
WaitStylusDown(true)
PUBDecodeKey | Index
Char := 0
Index := -50if tiley == 7or tiley == 8' check top line - numbers, punctuationif tilex > 1and tilex < 27
Index := (tilex - 2)/2elseif tilex > 27' check if on BS
Char := $1' do BSif tiley == 9or tiley == 10' 2nd line - qwerty..if tilex > 2and tilex < 28
Index := (tilex - 3)/2 + 13elseif tilex < 2' check if on TAB
Char := $2' do TABif tiley == 11or tiley == 12' 3rd line - asdfg.. if tilex > 3and tilex < 25
Index := (tilex - 4)/2 + 26elseif tilex > 25' checkif on RET key
Char := 3' do RETelseif tilex < 3' check if 'cap' pressedif (flagReg & 1) == 1
flagReg := flagReg & $FEelse
flagReg := flagReg | 1if tiley == 13or tiley == 14' 4th line - zxcv.. if tilex > 3and tilex < 24
Index := (tilex - 5)/2 + 37elseif tilex < 3or tilex > 25' check if on Shift key
Char := 4' do single Shift
FlagReg := FlagReg | 2' set for single Shift action
FlagReg := FlagReg & $FEif tiley == 15or tiley == 16' bottom line if (tilex > 8and tilex < 21) ' if Spacebar
Char := $20
flagReg := flagReg | 4{{' Index := 47 }}
elseif (tilex > 3and tilex < 6) ' check if 'cntl-c' key
Char := 5' do Cntl-zelseif (tilex > 6and tilex < 9) ' check if 'cntl-z' key
Char := 6' do Cntl-celseif tilex > 21and tilex < 25' check if ESC key
Char := 7' do ESCif (flagReg & 3 == 1)'' or (flagReg & 2 == 1) ' check flags for Shift Lock or single Shift
Index := Index + 48
Indexx := Index
if (Index > 0) and (FlagReg & 4 == 0)
Char := LookUpZ(Index: "`","1","2","3","4","5","6","7","8","9","0","-","=",{{
}} "q","w","e","r","t","y","u","i","o","p","[","]","\", {{
}} "a","s","d","f","g","h","j","k","l",":","'",{{
}} "z","x","c","v","b","n","m",",",".","/"," ", {{
}} "~","!","@","#","$","%","^","&","*","(",")","_","+", {{
}} "Q","W","E","R","T","Y","U","I","O","P","{","}","|", {{
}} "A","S","D","F","G","H","J","K","L",":",QU,{{
}} "Z","X","C","V","B","N","M","<",">","?"," ")
if Char => $20
print($111) ' heading white/yellow on blue
col:= colU ' restore last position used '
row := rowU
print(Char) ' show last typed character in upper areaif col == cols ' move down two tiles for next row
col++
row := row + 2
colU := col ' save last position
rowU := row
FlagReg := FlagReg & $FD' restore single Shift
print($110) ' black letters on silver PUBShowKeys
print($110) ' black letters on silver if (flagReg & 1 == 1) or (flagReg & 2 == 1)
col := 0
row := 7
PrintStr(string(" ~ ! @ # $ % ^ & * ( ) _ + "))
print($116) ' bs, tb, ret, sft, spacebar are white on green
PrintStr(string("bs"))
col := 0
row := 9
PrintStr(string("tb"))
print($110)
PrintStr(string(" Q W E R T Y U I O P { } |"))
col := 0
row := 11
print($115) ' 'cap' is white on red if selected, else on green
PrintStr(string("cap"))
print($110)
print($110)
PrintStr(string(" A S D F G H J K L : " , QU," "))
print($116)
PrintStr(string("ret "))
col := 0
row := 13
PrintStr(string("sft"))
print($110)
PrintStr(string(" Z X C V B N M < > ? "))
ELSE
col := 2
row := 7
PrintStr(string("` 1 2 3 4 5 6 7 8 9 0 - = "))
print($116)
PrintStr(string("bs"))
col := 0
row := 9
PrintStr(string("tb"))
print($110)
PrintStr(string(" q w e r t y u i o p [ ] \"))
col := 0
row := 11
print($116)
PrintStr(string("cap"))
print($110)
print($110)
PrintStr(string(" a s d f g h j k l : ' "))
print($116)
PrintStr(string("ret "))
col := 0
row := 13
PrintStr(string("sft"))
print($110)
PrintStr(string(" z x c v b n m , . / "))
print($116)
PrintStr(string("sft "))
col := 9
row := 15
PrintStr(string("[ spacebar ]")) ' cntl opt cmd names/legends unused
print($112)
col := 0
row := 15
PrintStr(string("cntl-z -c"))
col := 22
row := 15
PrintStr(string("esc"))
' col := 0' row :=' PrintStr(string(""))'PUB DUMMYPUBCalibrateTouchScreen|TLX,TLY,TRX,TRY,TBLX,TBLY,TBRX,TBRY' touch '+'s to calibraterepeat
print($100)
row:=6
col:=4
PrintStr(string("Calibrate Touch Screen"))
row:=12
col:=1
PrintStr(string("(Tap and release each point)"))
'Calibrate top-left corner
WaitStylusUp
Waitcnt(cnt+clkfreq/2)
Bitmap1Bit(@CalibrateCursor, 0, 0, 1, 1, 0)
row:=0
col:=3
PrintStr(string(186,144,144,170," Press Here"))
GetTouchCal
TLX:=touchx
TLY:=touchy
'Calibrate top-right corner
WaitStylusUp
Waitcnt(cnt+clkfreq/2)
print($100)
Bitmap1Bit(@CalibrateCursor, cols-1, 0, 1, 1, 0)
row:=0
col:=10
PrintStr(string("Press Here ",169,144,144,187))
GetTouchCal
TRX:=touchx
TRY:=touchy
'Calibrate bottom-left corner
WaitStylusUp
Waitcnt(cnt+clkfreq/2)
print($100)
Bitmap1Bit(@CalibrateCursor, 0, rows-2, 1, 1, 0)
row:=rows-2
col:=3
PrintStr(string(186,144,144,170," Press Here"))
GetTouchCal
TBLX:=touchx
TBLY:=touchy
'Calibrate bottom-right corner
WaitStylusUp
Waitcnt(cnt+clkfreq/2)
print($100)
Bitmap1Bit(@CalibrateCursor, cols-1, rows-2, 1, 1, 0)
row:=rows-2
col:=10
PrintStr(string("Press Here ",169,144,144,187)) ' these are Parallax font characters
GetTouchCal
TBRX:=touchx
TBRY:=touchy
'Calculate touchscreen cal factors'horizontal pixels between touchpoints = 16*(cols-1)'vertical pixels between touchpoints=16*(rows-2)
touchdx:=((TRX+TBRX)-(TLX+TBLX))/(32*(cols-1))
touchdy:=((TBLY+TBRY)-(TLY+TRY))/(32*(rows-2))
touchx0:=((TLX+TBLX)/2)-8*touchdx
touchy0:=((TLY+TRY)/2)-16*touchdy
'Now show cross in center and see if cal is good
WaitStylusUp
Waitcnt(cnt+clkfreq/2)
print($100)
Bitmap1Bit(@CalibrateCursor, 15, 8, 1, 1, 0)
row:=5
col:=4
PrintStr(string("Press Here ",5)) ' '5' = Parallax font 'down arrow'
GetTouchCal
WaitStylusUp
' waitcnt(cnt+clkfreq/2) 'Calculate if cal good'test x is at 15*16+7=247'test y is at 8*16+15=143if (||(((touchx-touchx0)/touchdx)-247)<5) and (||(((touchy-touchy0)/touchdy)-143)<5)
'Good Califtrue' WaitStylusUp
print($100)
row := 4
col := 10
PrintStr(string(" dx="))
dec(touchdx)
row := 6
col := 10
PrintStr(string(" dy="))
dec(touchdy)
row := 9
col := 10
PrintStr(string(" x0="))
dec(touchx0)
row := 11
col := 10
PrintStr(string(" y0="))
dec(touchy0)
Waitcnt(cnt+clkfreq)
WaitStylusDown(true)
'repeat ' ReturnelseWaitcnt(cnt+clkfreq/2)
print($100)
row:=5
col:=4
PrintStr(string("Calibration Failed."))
Waitcnt(cnt+clkfreq)
row:=15
col:=0
PrintStr(string(" X="))
dec((touchx-touchx0)/touchdx)
PrintStr(string(" Y="))
dec((touchy-touchy0)/touchdy)
WaitStylusDown(true)
PUBGetTouchCal|tx,ty'take 5 samples and average
tx~
ty~
repeat5
WaitStylusDown(false)
tx+=touchx
ty+=touchy
touchx:=tx/5
touchy:=ty/5
WaitStylusUp
PUBWaitStylusUp'Wait for stylus to be uprepeatwaitcnt(cnt+clkfreq/100)
ifina[lcd#TouchIrqPin]<>0returnPUBWaitStylusDown(bCalibrated)|tx,ty,z1,z2,tz'Wait for stylus to be down then update touchx, touchy and returnrepeatwaitcnt(cnt+clkfreq/1000)
ifina[lcd#TouchIrqPin]==0
tx:=i2c.GetTouchX
ty:=i2c.GetTouchY
z1:=i2c.GetTouchZ1
z2:=i2c.GetTouchZ2
'take another x,y reading and average
tx+=i2c.GetTouchX
ty+=i2c.GetTouchY
tx>>=1' divide by 2 using shift right
ty>>=1
tz:=tx*(z2-z1)/z1
waitcnt(cnt+clkfreq/1000)
if (tz<90000) and (tz>10000) and (ina[lcd#TouchIrqPin]==0 ) 'You might have to tweak these values for some LCDs...if bCalibrated==true'calculate calibrated pixel
touchx:=(tx-touchx0)/touchdx
touchy:=(ty-touchy0)/touchdy
else'set uncalibrated data
touchx:=tx
touchy:=ty
tilex := touchx/16' HASD - these two added to have 'tile' value too
tiley := touchy/16returnelse
bStillDown:=falseelse
bStillDown:=falsePRIBitmap1Bit(pBitmap, xPos, yPos, xSize, ySize, clr)|c,i,j,BmpAddress
row:=yPos
col:=xPos
c:=0
BmpAddress:=pBitmap+user_charbase-@uchar
repeat j from0to (ySize-1) step2repeat i from0to (xSize-1)
screen[row * cols + col] := (clr<<1+1) << 10 + BmpAddress>>6 +c
screen[(row+1) * cols + col] := (clr<<1) << 10 + BmpAddress>>6 +c
c++
col++
row+=2
col:=xPos
PRIBitmap2Bit(pBitmap, xPos, yPos, xSize, ySize, clr)|c,i,j,BmpAddress
row:=yPos
col:=xPos
c:=0
BmpAddress:=pBitmap+user_charbase-@uchar
repeat j from0to (ySize-1)
repeat i from0to (xSize-1)
screen[row * cols + col] := (clr) << 10 + BmpAddress>>6 +c
'Print2Bit(c,clr,pBitmap)
c++
col++
row++
col:=xPos
{{
PUB box(left,top,width,height) | x, y, i
ptr := top * cols + left
boxchr($0)
repeat i from 1 to width
boxchr($C)
boxchr($8)
repeat i from 1 to height
ptr := (top + i) * cols + left
boxchr($A)
ptr += width
boxchr($B)
ptr := (top + height + 1) * cols + left
boxchr($1)
repeat i from 1 to width
boxchr($D)
boxchr($9)
PRI boxchr(c): i
screen[ptr++] := boxcolor << 10 + $200 + c }} ' WHAT DOES $200 MEAN ???'' Print a character'''' $00..$FF = character'' $100 = clear screen'' $108 = backspace'' $10D = new line''$110..$11F = select color PRIPrintStr(stringptr)'' Print a zero-terminated stringrepeatstrsize(stringptr)
print(byte[stringptr++])
PUBprint(c) | i, kcase c
$00..$FF: 'character?
k := color << 1 + c & 1
i := k << 10 + $200 + c & $FE
screen[row * cols + col] := i
screen[(row + 1) * cols + col] := i | 1if ++col == cols
newline
$100: 'clear screen?wordfill(@screen, $220, screensize) ' original ' WHAT DOES $220 MEAN ???wordfill(@screen, $220, screensize) ' hasd
col := row := 0$108: 'backspace?if col
col--
$10D: 'return?
newline
$110..$11F: 'select color?
color := c & $F' New linePRInewline : i
col := 0if (row += 2) == rows
row -= 2'scroll linesrepeat i from0to rows-3' wordmove(@screen[i*cols], @screen[(i+2)*cols], cols)'clear new line' wordfill(@screen[(rows-2)*cols], $200, cols<<1)PRIdec(value) | i'' Print a decimal numberif value < 0
-value
print("-")
i := 1_000_000_000repeat10if value => i
print(value / i + "0")
value //= i
result~~
elseifresultor i == 1
print("0")
i /= 10PRIhex(value, digits)'' Print a hexadecimal number
value <<= (8 - digits) << 2repeat digits
print(lookupz((value <-= 4) & $F : "0".."9", "A".."F"))
DAT'Default Touchscreen Calibrations; HASD using B1 LCD average - 5 readings, B2 - 8
touchdx long121' Rayman 123 hasd A 127 B1 123 B2 121
touchdy long209' 206 209 208 208
touchx0 long3584' 2713 2072 2906 3605
touchy0 long4531' 4590 4046 4221 4569{{ RAM usage TsB lcd i2c gr fsrw
program 3774
Variable 455
Stack/free 3957 }}
DAT'Bitmap data
padding LONG7[16] 'alignment padding for the following user defined characters
uchar long
CalibrateCursor long
file "calibrateCursor.dat"'1 tile
ColorButton long
file "button1.dat"'2x2=4 tiles
LineButton long
file "button2.dat"'2x2=4 tiles
DotsButton long
file "button3.dat"'2x2=4 tiles DAT
vgacolors long' 1st long pair determines fore-/back-ground after 'print($100)'long$00A800A8'0 black on silverlong$0000A8A8long$F00CF00C'1 blue background with yellow letterslong$F0F00C0Clong$08A808A8'2 blue on silverlong$0808A8A8long$50005000'3 green on blacklong$50500000long$FC00FC00'4 white on blacklong$FCFC0000long$FF80FF80'5 white on redlong$FFFF8080long$FF20FF20'6 white on greenlong$FFFF2020long$FF28FF28'7 white on cyanlong$FFFF2828long$70447044'8 yellow on purplelong$70704444long$E084E084'9 orange on raspberrylong$E0E08484long$60346034'10 cranberry o pale yellowlong$60603434long$F020F020'11 yellow-orange on greenlong$F0F02020long$AC14AC14'12 grey-blue on graylong$ACAC1414long$50E050E0'13 green on orangelong$5050E0E0long$6CB06CB0'14 lt. blue on yellowlong$6C6CB0B0
coloReg1 long$70007000'15 for 'Color Dial' use;
coloReg2 long$70700000' initially yellow on black {{ Propeller I/O pin usage
Prop I/O Signal Use I/O Signal Use
--------+--------+----------+---+--------+----------
A00 DO ( SD card) A31* TX (PropPlug)
A01 CLK " SPI A30* RX "
A02 DI " A29* SDA (i2c EEPROM)
A03 CS " A28* SCL (and Touch)
A04 BL/DON (LCD) A27* (PS/2 kEYBOARD)
A05 DE " A26* "
A06 PCLK " A25* (PS/2 MOUSE)
A07 IRQ " A24* "
A08 not used A23 R1 (LCD)
A09 " A22 R0 "
A10 " A21 G1 "
A11 " A20 G0 "
A12 1.1K (TV) A19 B1 "
A13 560 " A18 B0 "
A14 270 " A17 HSync "
A15 560 (audio) " A16 VSync "
* = Hard-wired on Parallax Prop ProtoBoard
}}
I tried to send the archived files from Windows website but for some reason I'm not allowed in. Yet, after dinner I tried again on the Mac and I was logged in, yet before dinner I couldn't get in.
I was hoping I could get in but can't. Will try later on. May be Sat before that happens. Sorry
Yes, Somewhere along while I was working on my code I noticed those files were gone. I think maybe they were the '+' symbols for the Calibration points. I tried until I got pretty good at guessing where the graphic which did show up should be. Thus was able to get cal data for my screens. Worked great for the 3.5" screen, but don't recall it was for the 4.3".
I learned a lot with these touchscreens. Pretty neat not needing a keyboard or mouse, LCD has variable brightness backlighting, and found both the 3.5 and 4.3" LCDs to be adequate for many applications.
I must of had the 4.3" LCDs for nearly a year, but when I got the 3.5" one after them I got onto a design displaying heart beat waveform. Still haven't gotten to the 'front end' sensor and amplifier part yet. Rayman's PTP board for the 3.5" was a great beginning to work with. Hardly had to any parts except for the sigma-delta A/D and my D/A (to simulate a heart pulse for developing the firmware). Battery operated makes for a handy system to use anywhere. I'm amazed how long the AAA's last for the PTP board and 3.5" LCD. That was what sold me on getting a 3.5" one when I'd not even run the 4.3" ones.
My 4.3" is mounted on a Prop Protoboard along with a SD card board. Unfortunately I have another project to finish first before getting back to playing with these LCDs.
I finally found a few minutes after returning from the turkey holiday to test out what you posted.
I wasn't paying close enough attention to this thread (which is for the 4.3" touch screens). Turns out the one I have is the 3.5" so it didn't work as expected. I only had a few minutes when I tried this. I'll need to sit down with the code (and this thread) to see if there's a way to convert it to work on my board. I get something on the screen, but what ever it is is clearly munched. No doubt it has to do with the different screen size/number of tiles on these two different screens.
Nevertheless, this seems as good a place as any to cut my teeth on graphics. I've not worked with display (other than serial debug messages) features of the prop.
Thanks again for the code, examples, and suggestions.
If all you need is to change brightness, I also have a 3.5" LCD source which uses the same scheme. I use two tiles for 'buttons' with '<' and '>' characters for button legend for brightness 'down and 'up'. If you are interested I could get that source to you. Let me know if this would interest you. The purpose was to plot (heart) pulse data and I needed a few 'buttons' to control things. So without an A/D and the front end it would plot just a straight line most likely. I used a D/A to simulate a pulse during debug of the button and plot code.
Comments
http://www.rayslogic.com/Propeller/Products/PSB/PSB.htm
This is an example of how to modify a VGA app to use the 4.3" touchscreen...
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My Prop Apps:· http://www.rayslogic.com/propeller/Programming/Programming.htm
My Prop Info: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
Have you, or anyone else done anything with the backlight so that it can be adjusted dynamically? Everytime I change the value (1-32) I have to reinitialize the display, which causes a very annoying screen flicker.
I'd like to just change the value and have the display adjust the backlight only. That way, I could implment a software controlled ambient light sensor (with the user being able to set the gain.)
Thanks,
Bill
I don't need to adjust BL for now; but once I get on batteries (might be a while the way things are progressing for me), I'll sure want to conserve them.
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Harley Shanko
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My Prop Apps:· http://www.rayslogic.com/propeller/Programming/Programming.htm
My Prop Info: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
I'll grab your code and add it to the backporch portion in his driver... that should do it.
Bill
I forgot to mention - the PSB I bought at UPEW works great [noparse]:)[/noparse]
I plugged in one of the "used" 4.3" displays I got from you earlier, and it fired up immediately!
Now I will just have to measure the power consumption to see if I can get away with powering it from a USB port...
Bill
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www.mikronauts.com E-mail: mikronauts _at_ gmail _dot_ com
My products: Morpheus / Mem+ / PropCade / FlexMem / VMCOG / Propteus / Proteus / SerPlug
and 6.250MHz Crystals to run Propellers at 100MHz & 5.0" OEM TFT VGA LCD modules
Las - Large model assembler Largos - upcoming nano operating system
Bill
You can just move the Spin code that sets the brightness at the end of the start methode to it's own public methode. Then it will be possible to change this when ever you want by calling this methode.
Bill (Henning)
My Board draws ~150 mA and I power it always from an USB port. I think the PSB has a similar current consumption.
Andy
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www.mikronauts.com E-mail: mikronauts _at_ gmail _dot_ com
My products: Morpheus / Mem+ / PropCade / FlexMem / VMCOG / Propteus / Proteus / SerPlug
and 6.250MHz Crystals to run Propellers at 100MHz & 5.0" OEM TFT VGA LCD modules
Las - Large model assembler Largos - upcoming nano operating system
Post Edited (Bill Henning) : 7/12/2010 1:28:29 AM GMT
Most of the 400 mA is the LCD backlight.· You can save a lot of power by turning it down...
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My Prop Apps:· http://www.rayslogic.com/propeller/Programming/Programming.htm
My Prop Info: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
This thread answered that question. So added a menu for the BL adjustment and it works great on the 3.5" LCD.
Pic attached; the white text on blue is for debug purposes temporarily.
Thanks for the info on BL.
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Harley Shanko
That was too easy!!!
Hey all, here is the simple method I added to Andy's Full Screen Graphics Driver to allow dynamic blacklighting adjustments.
PUB AdjustBrightness(brightness) : okay repeat brightness outa[noparse][[/noparse]bl] := 0 outa[noparse][[/noparse]bl] := 1 return trueBill
On the LCD front surface is a film that is beginning to wrinkle and peel. Is this to be removed, or have I been too rough on it?
I didn't want to peel it off if it shouldn't be done. Sorry to bother on this maybe trivial point.
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Harley Shanko
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My Prop Apps:· http://www.rayslogic.com/propeller/Programming/Programming.htm
My Prop Info: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
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My Prop Apps:· http://www.rayslogic.com/propeller/Programming/Programming.htm
My Prop Info: ·http://www.rayslogic.com/propeller/propeller.htm
My Prop Products:· http://www.rayslogic.com/Propeller/Products/Products.htm
Doing some tests, it works perfectly. I built a slider that allows the user to drag a thumb across the screen. I used the TouchX value divided by 100. I then trimmed that to 1-32 to fit the parameter range. I found that if I didn't trim it, it would cause the display to shut down.
Now, when I drag the thumb, it does a beautiful job of changing it depending on where you drag the thumb.
EDIT:· By the way, it works because the spin code is the only code that is twiddling the bits for the backlight pin, which is obviously on a different cog then the display driver itself.· Andy's driver doesn't do anything to that pin after the initial spin startup.
Bill
Post Edited (wjsteele) : 7/12/2010 2:28:13 PM GMT
Thanks. Wasn't sure. I'd thought some damage had been done to the front surface; thought it were extra 'soft' and easy to scuff or punch.
Looks super with it off, shinier, clearer and feels like it is a tougher film.
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Harley Shanko
The only non-cosmetic change was to reduce the spacings between mounting holes. This is because the blade that I cut the boards apart with is much thicker than originally anticipated. Also, I've made a lot of cosmetic improvements. Here's a pic:
Bill- are you willing/able to share your code for this? I have one of Rayman's touch-screen units and I'm having trouble getting off square one. I'm not very familiar with graphics and bitmaps but I'm working on it. Having an example that adjusts the brightness could be really educational.
Thanks
Peter
I don't know how you planned to change the brightness, but I played with both the 3.5 and 4.3" LCDs and used 'buttons' to change things.
I used the textual '<' and '>' characters to decrease/increase brightness with 0 and 31 limits.
If you're interested I can supply the source.
Harley-
That would be great. I think I need another way of looking at things to help me understand what's going on. I have the PTP board from Rayman. If that's what you've got too, it should be as simple as downloading your code to the platform to see what it does. I can then work through the code to see how you manage it.
The application I'd like to write is pretty straight forward. Just some menus (text based would be a fine first pass). But getting text boxes (or better yet) small buttons to go where I want and be the color I want AND respond to buttons hasn't worked so far.
I have to admit that Bill's slider sounds pretty cool- downright iPhone like.
Thanks,
Peter
Sure, Peter.
The following code is used to read the screen touch location... and if it is within the lower portion of the screen, then I display the text for the slider.
The user slides their finger across the text and I simply read the position of their finger.
'get current touch screen location and pressure touchx := i2c.gettouchx/16 touchy := i2c.gettouchy/16 touchz := i2c.gettouchz1/1000 'if the pressure is greater than 10, then show slider if touchz>10 gr.text(0, -25, string("<-- Brightness -->")) if touchY > 3000 'are they touching the bottom line? newBrightness := (touchx/100) 'set brightness to 1/100 scale of touch point if (newBrightness =< 0) 'make sure brightness stays within bounds newBrightness := 1 if (newBrightness => 33) newBrightness := 32 newBrightness := 33 - newBrightness oldBrightness := newBrightness 'store for future use ifnot (Brightness == newBrightness) 'if they changed... then change display Brightness := newBrightness lcd.AdjustBrightness(Brightness)This is the code for the "AdjustBrightness" method I added to the "TSD_GraphicsDriver" that Andy Schenk wrote for the 4.3" display.
PUB AdjustBrightness(brightness) : okay repeat brightness outa[bl] := 0 outa[bl] := 1 return trueThat's it!
Bill
Thanks for sharing. That looks pretty straight forward. I'm supposed to be packing the van and 3 kids for a trip to grandma's. When I get back I'll test it out.
Thanks,
Peter
Sorry about the slowness on this matter. For some reason I am unable to transfer the archived file from Windows to my Mac. Wasted too much time trying to fix the problem, so decided I'd just copy from Prop tool to the Mac to let you access it.
Hope this is useful. I was hoping to include Basic with the file but never got that far; thus the file name is a bit confusing.
{{+-----------------------------------------------------+ | Touch-sscreen Basic -TsB by hasdesignn 18 Sep.2010 | rev. 11:17 am 6 Oct.2010 +-----------------------------------------------------+ 'PSB Graphics Demo (C) Copyright 2009 Rayslogic.com, LLC 'Based on the Propeller Graphics and Paint ! demos adapted for the PSB Screen }} CON _clkmode = xtal1+pll16x _clkfreq = 80_000_000 QU = 34 'LCD is 480x272 giving 30x17 tiles; divide by 16 for Parallax font) cols = 30 rows = 17 screensize = cols * rows ' = 510 tiles 'Constants for Graphics Demo _stack = ($3000 + 100) >> 2 'accomodate display memory and stack x_tiles = 30 '16 y_tiles = 17 '12 paramcount = 14 bitmap_base = $5000 ' was $2000 no double buffer display_base = $5000 lines = 5 thickness = 2 GraphicsXOffset=6 ' NEEDED ??? GraphicsYOffset=3 VAR long lcd_status 'status: off/visible/invisible read-only (5 contiguous longs) long lcd_enable 'enable: off/on write-only long lcd_videobase 'video base @word write-only long lcd_colorbase 'color base @long write-only long lcd_backlight 'Used to control LCD backlight long col, row, color, tilex, tiley, colU, rowU long boxcolor,ptr 'vars for Graphics Demo long mousex, mousey long touchx, touchy ' long touchx0,touchdx,touchy0,touchdy 'cal factors long CurrentColor, bLineMode, bStillDown, LastX, LastY word screen[screensize] 'for custom characters word user_charbase byte colorA, colorB, flagReg, Char, Indexx ' lagReg: lsb = 'cap'key ON; byte x[lines], y[lines], xs[lines], ys[lines] OBJ lcd : "PSB_LcdDriver" 'Modified to drive 4.3" TFT i2c : "PSB_i2cDriver" ' Rokicki & Dummer's i2c gr : "graphics" ' Chip Graecey's object ' kbd : "Keyboard" ' Ps/2 keyboard ' mouse : "mouse" fsrw : "fsrw" ' ' sd2 : "SD2.0_FATEngine" 'Kye's SD card engine PUB Main 'Start up Display 'clear screen print($100) ' show black on silver 'start driver lcd_enable:=1 lcd_videobase := @screen lcd_colorbase := @vgacolors lcd_backlight:= 22 '1=bright, 16=medium, 32=dark lcd.start(@lcd_status) i2c.initialize 'init touch controller ' TSC2003 touch IC repeat 20 i2c.GetTouchX GraphicsDemo PUB GraphicsDemo|i,j,k,dx,dy, kk, pp, pq, rr, numx, numchr,GraphicsColor ' modified repeat print($110) print($100) printStr(string("KeyBd,Color,Calibrate")) WaitStylusDown(true) if tiley < 3 if tilex < 5 TouchKeyBd if (tilex < 11) and (tilex > 5) ColorDial if (tilex < 21) and (tilex > 11) CalibrateTouchScreen PUB colorDial | i colorB := coloReg1 colorA := coloReg1 >> 8 repeat print($100) print($11F) row := 1 repeat i from 0 to 7 printStr(string("The Parallax PROPELLER is # 1 ")) colorLong WaitStylusDown(true) if ina[lcd#TouchIrqPin]==0 UpdateColor WaitStylusUp Waitcnt(cnt+clkfreq/2) PUB UpdateColor if (Tilex < 8) and (tiley > 12) if tiley < 15 if (tilex == 0) colorA := ColorA + $10 if (tilex == 1) colorA := ColorA + 1 if (tilex == 6) colorB := ColorB + $10 if (tilex == 7) colorB := ColorB + 1 else if (tilex == 0) colorA := ColorA - $10 if (tilex == 1) colorA := ColorA - 1 if (tilex == 6) colorB := ColorB - $10 if (tilex == 7) colorB := ColorB - 1 coloReg1 := colorA<<24 + colorB<<16 + colorA<<8 + colorB coloReg2 := colorA<<24 + colorA<<16 + colorB<<8 + colorB colorLong PUB colorLong print($110) col := 0 row := 13 hex (coloReg1,8) col := 0 row := 15 hex (coloReg2,8) PUB TouchKeyBd {{ (272 lines/16 =) 17 tiles high provides 2 data entry lines w/blue background,4 lines display standard ASCII keyboard layout black on silver, w/ spacebar,control keys in white on green except for 'cap' key in white on red when locked. When 'cap' has green baclground keys are lower-case, capitaized when red background. Touch 'sft' prior to each single capital letter; touch cap' for multiple capital letters. }} flagReg := 1 ' repeat print($111) ' heading white/yellow on blue print($100) col :=0 ' row := 0 colU :=0 rowU :=0 printStr(string(" Touchscreen Basic ")) printStr(string(" 6 Oct.2019 ")) printStr(string(" ")) printStr(string(" ")) repeat if ((tilex == 0) and (tiley==16)) ' DEBUG control if (flagReg & $80) > 1 flagReg := flagReg & $7F else flagReg := flagReg | $80 if ((tilex >25) and (tiley==16)) ' backlight control if (tilex < 28) and (lcd_backlight < 32) lcd_backlight := lcd_backlight + 1 else if (tilex > 27) and (lcd_backlight > 1) lcd_backlight := lcd_backlight - 1 ShowKeys DecodeKey if flagReg & $80 > 0 print($114) ' white on black for DEBUG data col := 18 row := 0 PrintStr(string("Index=")) ' show pixel x,y of touch position hex(Indexx,2) {{ PrintStr(string("touchx=")) ' show pixel x,y of touch position dec(touchx) col := 18 row := 2 PrintStr(string("touchy=")) dec(touchy) }} col := 18 row := 4 PrintStr(string("tilex=")) ' show Tile number dec(tilex) col := 18 row := 6 PrintStr(string("tiley=")) dec(tiley) col := 18 ' show flag register value row := 8 PrintStr(string("flagReg=")) hex(flagReg,2) col := 18 ' show BL value row := 10 PrintStr(string("BL=")) dec(lcd_backlight) col := 18 ' show 'Char' value row := 12 PrintStr(string("Ch=")) hex(Char,2) print($20) print(Char) Waitcnt(cnt+clkfreq/2) WaitStylusUp WaitStylusDown(true) PUB DecodeKey | Index Char := 0 Index := -50 if tiley == 7 or tiley == 8 ' check top line - numbers, punctuation if tilex > 1 and tilex < 27 Index := (tilex - 2)/2 elseif tilex > 27 ' check if on BS Char := $1 ' do BS if tiley == 9 or tiley == 10 ' 2nd line - qwerty.. if tilex > 2 and tilex < 28 Index := (tilex - 3)/2 + 13 elseif tilex < 2 ' check if on TAB Char := $2 ' do TAB if tiley == 11 or tiley == 12 ' 3rd line - asdfg.. if tilex > 3 and tilex < 25 Index := (tilex - 4)/2 + 26 elseif tilex > 25 ' checkif on RET key Char := 3 ' do RET elseif tilex < 3 ' check if 'cap' pressed if (flagReg & 1) == 1 flagReg := flagReg & $FE else flagReg := flagReg | 1 if tiley == 13 or tiley == 14 ' 4th line - zxcv.. if tilex > 3 and tilex < 24 Index := (tilex - 5)/2 + 37 elseif tilex < 3 or tilex > 25 ' check if on Shift key Char := 4 ' do single Shift FlagReg := FlagReg | 2 ' set for single Shift action FlagReg := FlagReg & $FE if tiley == 15 or tiley == 16 ' bottom line if (tilex > 8 and tilex < 21) ' if Spacebar Char := $20 flagReg := flagReg | 4 {{' Index := 47 }} elseif (tilex > 3 and tilex < 6) ' check if 'cntl-c' key Char := 5 ' do Cntl-z elseif (tilex > 6 and tilex < 9) ' check if 'cntl-z' key Char := 6 ' do Cntl-c elseif tilex > 21 and tilex < 25 ' check if ESC key Char := 7 ' do ESC if (flagReg & 3 == 1)'' or (flagReg & 2 == 1) ' check flags for Shift Lock or single Shift Index := Index + 48 Indexx := Index if (Index > 0) and (FlagReg & 4 == 0) Char := LookUpZ(Index: "`","1","2","3","4","5","6","7","8","9","0","-","=",{{ }} "q","w","e","r","t","y","u","i","o","p","[","]","\", {{ }} "a","s","d","f","g","h","j","k","l",":","'",{{ }} "z","x","c","v","b","n","m",",",".","/"," ", {{ }} "~","!","@","#","$","%","^","&","*","(",")","_","+", {{ }} "Q","W","E","R","T","Y","U","I","O","P","{","}","|", {{ }} "A","S","D","F","G","H","J","K","L",":",QU,{{ }} "Z","X","C","V","B","N","M","<",">","?"," ") if Char => $20 print($111) ' heading white/yellow on blue col:= colU ' restore last position used ' row := rowU print(Char) ' show last typed character in upper area if col == cols ' move down two tiles for next row col++ row := row + 2 colU := col ' save last position rowU := row FlagReg := FlagReg & $FD ' restore single Shift print($110) ' black letters on silver PUB ShowKeys print($110) ' black letters on silver if (flagReg & 1 == 1) or (flagReg & 2 == 1) col := 0 row := 7 PrintStr(string(" ~ ! @ # $ % ^ & * ( ) _ + ")) print($116) ' bs, tb, ret, sft, spacebar are white on green PrintStr(string("bs")) col := 0 row := 9 PrintStr(string("tb")) print($110) PrintStr(string(" Q W E R T Y U I O P { } |")) col := 0 row := 11 print($115) ' 'cap' is white on red if selected, else on green PrintStr(string("cap")) print($110) print($110) PrintStr(string(" A S D F G H J K L : " , QU," ")) print($116) PrintStr(string("ret ")) col := 0 row := 13 PrintStr(string("sft")) print($110) PrintStr(string(" Z X C V B N M < > ? ")) ELSE col := 2 row := 7 PrintStr(string("` 1 2 3 4 5 6 7 8 9 0 - = ")) print($116) PrintStr(string("bs")) col := 0 row := 9 PrintStr(string("tb")) print($110) PrintStr(string(" q w e r t y u i o p [ ] \")) col := 0 row := 11 print($116) PrintStr(string("cap")) print($110) print($110) PrintStr(string(" a s d f g h j k l : ' ")) print($116) PrintStr(string("ret ")) col := 0 row := 13 PrintStr(string("sft")) print($110) PrintStr(string(" z x c v b n m , . / ")) print($116) PrintStr(string("sft ")) col := 9 row := 15 PrintStr(string("[ spacebar ]")) ' cntl opt cmd names/legends unused print($112) col := 0 row := 15 PrintStr(string("cntl-z -c")) col := 22 row := 15 PrintStr(string("esc")) ' col := 0 ' row := ' PrintStr(string("")) 'PUB DUMMY PUB CalibrateTouchScreen|TLX,TLY,TRX,TRY,TBLX,TBLY,TBRX,TBRY ' touch '+'s to calibrate repeat print($100) row:=6 col:=4 PrintStr(string("Calibrate Touch Screen")) row:=12 col:=1 PrintStr(string("(Tap and release each point)")) 'Calibrate top-left corner WaitStylusUp Waitcnt(cnt+clkfreq/2) Bitmap1Bit(@CalibrateCursor, 0, 0, 1, 1, 0) row:=0 col:=3 PrintStr(string(186,144,144,170," Press Here")) GetTouchCal TLX:=touchx TLY:=touchy 'Calibrate top-right corner WaitStylusUp Waitcnt(cnt+clkfreq/2) print($100) Bitmap1Bit(@CalibrateCursor, cols-1, 0, 1, 1, 0) row:=0 col:=10 PrintStr(string("Press Here ",169,144,144,187)) GetTouchCal TRX:=touchx TRY:=touchy 'Calibrate bottom-left corner WaitStylusUp Waitcnt(cnt+clkfreq/2) print($100) Bitmap1Bit(@CalibrateCursor, 0, rows-2, 1, 1, 0) row:=rows-2 col:=3 PrintStr(string(186,144,144,170," Press Here")) GetTouchCal TBLX:=touchx TBLY:=touchy 'Calibrate bottom-right corner WaitStylusUp Waitcnt(cnt+clkfreq/2) print($100) Bitmap1Bit(@CalibrateCursor, cols-1, rows-2, 1, 1, 0) row:=rows-2 col:=10 PrintStr(string("Press Here ",169,144,144,187)) ' these are Parallax font characters GetTouchCal TBRX:=touchx TBRY:=touchy 'Calculate touchscreen cal factors 'horizontal pixels between touchpoints = 16*(cols-1) 'vertical pixels between touchpoints=16*(rows-2) touchdx:=((TRX+TBRX)-(TLX+TBLX))/(32*(cols-1)) touchdy:=((TBLY+TBRY)-(TLY+TRY))/(32*(rows-2)) touchx0:=((TLX+TBLX)/2)-8*touchdx touchy0:=((TLY+TRY)/2)-16*touchdy 'Now show cross in center and see if cal is good WaitStylusUp Waitcnt(cnt+clkfreq/2) print($100) Bitmap1Bit(@CalibrateCursor, 15, 8, 1, 1, 0) row:=5 col:=4 PrintStr(string("Press Here ",5)) ' '5' = Parallax font 'down arrow' GetTouchCal WaitStylusUp ' waitcnt(cnt+clkfreq/2) 'Calculate if cal good 'test x is at 15*16+7=247 'test y is at 8*16+15=143 if (||(((touchx-touchx0)/touchdx)-247)<5) and (||(((touchy-touchy0)/touchdy)-143)<5) 'Good Cal if true ' WaitStylusUp print($100) row := 4 col := 10 PrintStr(string(" dx=")) dec(touchdx) row := 6 col := 10 PrintStr(string(" dy=")) dec(touchdy) row := 9 col := 10 PrintStr(string(" x0=")) dec(touchx0) row := 11 col := 10 PrintStr(string(" y0=")) dec(touchy0) Waitcnt(cnt+clkfreq) WaitStylusDown(true) 'repeat ' Return else Waitcnt(cnt+clkfreq/2) print($100) row:=5 col:=4 PrintStr(string("Calibration Failed.")) Waitcnt(cnt+clkfreq) row:=15 col:=0 PrintStr(string(" X=")) dec((touchx-touchx0)/touchdx) PrintStr(string(" Y=")) dec((touchy-touchy0)/touchdy) WaitStylusDown(true) PUB GetTouchCal|tx,ty 'take 5 samples and average tx~ ty~ repeat 5 WaitStylusDown(false) tx+=touchx ty+=touchy touchx:=tx/5 touchy:=ty/5 WaitStylusUp PUB WaitStylusUp 'Wait for stylus to be up repeat waitcnt(cnt+clkfreq/100) if ina[lcd#TouchIrqPin]<>0 return PUB WaitStylusDown(bCalibrated)|tx,ty,z1,z2,tz 'Wait for stylus to be down then update touchx, touchy and return repeat waitcnt(cnt+clkfreq/1000) if ina[lcd#TouchIrqPin]==0 tx:=i2c.GetTouchX ty:=i2c.GetTouchY z1:=i2c.GetTouchZ1 z2:=i2c.GetTouchZ2 'take another x,y reading and average tx+=i2c.GetTouchX ty+=i2c.GetTouchY tx>>=1 ' divide by 2 using shift right ty>>=1 tz:=tx*(z2-z1)/z1 waitcnt(cnt+clkfreq/1000) if (tz<90000) and (tz>10000) and (ina[lcd#TouchIrqPin]==0 ) 'You might have to tweak these values for some LCDs... if bCalibrated==true 'calculate calibrated pixel touchx:=(tx-touchx0)/touchdx touchy:=(ty-touchy0)/touchdy else 'set uncalibrated data touchx:=tx touchy:=ty tilex := touchx/16 ' HASD - these two added to have 'tile' value too tiley := touchy/16 return else bStillDown:=false else bStillDown:=false PRI Bitmap1Bit(pBitmap, xPos, yPos, xSize, ySize, clr)|c,i,j,BmpAddress row:=yPos col:=xPos c:=0 BmpAddress:=pBitmap+user_charbase-@uchar repeat j from 0 to (ySize-1) step 2 repeat i from 0 to (xSize-1) screen[row * cols + col] := (clr<<1+1) << 10 + BmpAddress>>6 +c screen[(row+1) * cols + col] := (clr<<1) << 10 + BmpAddress>>6 +c c++ col++ row+=2 col:=xPos PRI Bitmap2Bit(pBitmap, xPos, yPos, xSize, ySize, clr)|c,i,j,BmpAddress row:=yPos col:=xPos c:=0 BmpAddress:=pBitmap+user_charbase-@uchar repeat j from 0 to (ySize-1) repeat i from 0 to (xSize-1) screen[row * cols + col] := (clr) << 10 + BmpAddress>>6 +c 'Print2Bit(c,clr,pBitmap) c++ col++ row++ col:=xPos {{ PUB box(left,top,width,height) | x, y, i ptr := top * cols + left boxchr($0) repeat i from 1 to width boxchr($C) boxchr($8) repeat i from 1 to height ptr := (top + i) * cols + left boxchr($A) ptr += width boxchr($B) ptr := (top + height + 1) * cols + left boxchr($1) repeat i from 1 to width boxchr($D) boxchr($9) PRI boxchr(c): i screen[ptr++] := boxcolor << 10 + $200 + c }} ' WHAT DOES $200 MEAN ??? '' Print a character '' '' $00..$FF = character '' $100 = clear screen '' $108 = backspace '' $10D = new line ''$110..$11F = select color PRI PrintStr(stringptr) '' Print a zero-terminated string repeat strsize(stringptr) print(byte[stringptr++]) PUB print(c) | i, k case c $00..$FF: 'character? k := color << 1 + c & 1 i := k << 10 + $200 + c & $FE screen[row * cols + col] := i screen[(row + 1) * cols + col] := i | 1 if ++col == cols newline $100: 'clear screen? wordfill(@screen, $220, screensize) ' original ' WHAT DOES $220 MEAN ??? wordfill(@screen, $220, screensize) ' hasd col := row := 0 $108: 'backspace? if col col-- $10D: 'return? newline $110..$11F: 'select color? color := c & $F ' New line PRI newline : i col := 0 if (row += 2) == rows row -= 2 'scroll lines repeat i from 0 to rows-3 ' wordmove(@screen[i*cols], @screen[(i+2)*cols], cols) 'clear new line ' wordfill(@screen[(rows-2)*cols], $200, cols<<1) PRI dec(value) | i '' Print a decimal number if value < 0 -value print("-") i := 1_000_000_000 repeat 10 if value => i print(value / i + "0") value //= i result~~ elseif result or i == 1 print("0") i /= 10 PRI hex(value, digits) '' Print a hexadecimal number value <<= (8 - digits) << 2 repeat digits print(lookupz((value <-= 4) & $F : "0".."9", "A".."F")) DAT 'Default Touchscreen Calibrations; HASD using B1 LCD average - 5 readings, B2 - 8 touchdx long 121 ' Rayman 123 hasd A 127 B1 123 B2 121 touchdy long 209 ' 206 209 208 208 touchx0 long 3584 ' 2713 2072 2906 3605 touchy0 long 4531 ' 4590 4046 4221 4569 {{ RAM usage TsB lcd i2c gr fsrw program 3774 Variable 455 Stack/free 3957 }} DAT 'Bitmap data padding LONG 7[16] 'alignment padding for the following user defined characters uchar long CalibrateCursor long file "calibrateCursor.dat" '1 tile ColorButton long file "button1.dat" '2x2=4 tiles LineButton long file "button2.dat" '2x2=4 tiles DotsButton long file "button3.dat" '2x2=4 tiles DAT vgacolors long ' 1st long pair determines fore-/back-ground after 'print($100)' long $00A800A8 '0 black on silver long $0000A8A8 long $F00CF00C '1 blue background with yellow letters long $F0F00C0C long $08A808A8 '2 blue on silver long $0808A8A8 long $50005000 '3 green on black long $50500000 long $FC00FC00 '4 white on black long $FCFC0000 long $FF80FF80 '5 white on red long $FFFF8080 long $FF20FF20 '6 white on green long $FFFF2020 long $FF28FF28 '7 white on cyan long $FFFF2828 long $70447044 '8 yellow on purple long $70704444 long $E084E084 '9 orange on raspberry long $E0E08484 long $60346034 '10 cranberry o pale yellow long $60603434 long $F020F020 '11 yellow-orange on green long $F0F02020 long $AC14AC14 '12 grey-blue on gray long $ACAC1414 long $50E050E0 '13 green on orange long $5050E0E0 long $6CB06CB0 '14 lt. blue on yellow long $6C6CB0B0 coloReg1 long $70007000 '15 for 'Color Dial' use; coloReg2 long $70700000 ' initially yellow on black {{ Propeller I/O pin usage Prop I/O Signal Use I/O Signal Use --------+--------+----------+---+--------+---------- A00 DO ( SD card) A31* TX (PropPlug) A01 CLK " SPI A30* RX " A02 DI " A29* SDA (i2c EEPROM) A03 CS " A28* SCL (and Touch) A04 BL/DON (LCD) A27* (PS/2 kEYBOARD) A05 DE " A26* " A06 PCLK " A25* (PS/2 MOUSE) A07 IRQ " A24* " A08 not used A23 R1 (LCD) A09 " A22 R0 " A10 " A21 G1 " A11 " A20 G0 " A12 1.1K (TV) A19 B1 " A13 560 " A18 B0 " A14 270 " A17 HSync " A15 560 (audio) " A16 VSync " * = Hard-wired on Parallax Prop ProtoBoard }}I tried to send the archived files from Windows website but for some reason I'm not allowed in. Yet, after dinner I tried again on the Mac and I was logged in, yet before dinner I couldn't get in.
I was hoping I could get in but can't. Will try later on. May be Sat before that happens. Sorry
Thanks for all your effort. I'm out of town for the Thanksgiving holiday, but look forward to getting home and trying this.
I really appreciate this.
Thanks,
Peter
I've got your code running... however, I don't have the four dat files for the new characters you loaded.
It actually revealed a problem with one of the touch screens I have and didn't even realize... I have a dead spot in it!
Very nice work!
Bill
Yes, Somewhere along while I was working on my code I noticed those files were gone. I think maybe they were the '+' symbols for the Calibration points. I tried until I got pretty good at guessing where the graphic which did show up should be. Thus was able to get cal data for my screens. Worked great for the 3.5" screen, but don't recall it was for the 4.3".
I learned a lot with these touchscreens. Pretty neat not needing a keyboard or mouse, LCD has variable brightness backlighting, and found both the 3.5 and 4.3" LCDs to be adequate for many applications.
I must of had the 4.3" LCDs for nearly a year, but when I got the 3.5" one after them I got onto a design displaying heart beat waveform. Still haven't gotten to the 'front end' sensor and amplifier part yet. Rayman's PTP board for the 3.5" was a great beginning to work with. Hardly had to any parts except for the sigma-delta A/D and my D/A (to simulate a heart pulse for developing the firmware). Battery operated makes for a handy system to use anywhere. I'm amazed how long the AAA's last for the PTP board and 3.5" LCD. That was what sold me on getting a 3.5" one when I'd not even run the 4.3" ones.
My 4.3" is mounted on a Prop Protoboard along with a SD card board. Unfortunately I have another project to finish first before getting back to playing with these LCDs.
I finally found a few minutes after returning from the turkey holiday to test out what you posted.
I wasn't paying close enough attention to this thread (which is for the 4.3" touch screens). Turns out the one I have is the 3.5" so it didn't work as expected. I only had a few minutes when I tried this. I'll need to sit down with the code (and this thread) to see if there's a way to convert it to work on my board. I get something on the screen, but what ever it is is clearly munched. No doubt it has to do with the different screen size/number of tiles on these two different screens.
Nevertheless, this seems as good a place as any to cut my teeth on graphics. I've not worked with display (other than serial debug messages) features of the prop.
Thanks again for the code, examples, and suggestions.
Regards,
Peter
If all you need is to change brightness, I also have a 3.5" LCD source which uses the same scheme. I use two tiles for 'buttons' with '<' and '>' characters for button legend for brightness 'down and 'up'. If you are interested I could get that source to you. Let me know if this would interest you. The purpose was to plot (heart) pulse data and I needed a few 'buttons' to control things. So without an A/D and the front end it would plot just a straight line most likely. I used a D/A to simulate a pulse during debug of the button and plot code.