A tft addin for pbp3

[richard]

the 2.2 board before and after the flash chip added (w25q32bv)

[richard]

did a bit more fiddling with the buttons
we now have rounded corners and self centering title text , and self scaling title text size too.

the flash bit now has a flasheader cmd to read image nams and x y sizes .

this demo has the flash bits commented out

ps the button x,y value now is the centre of the button (was bottom lh cnr) and each button can have its own size still

[richard]

fixed touch module cs pin not initialised to unselected state on boot up and had some vars being used without being cleared first (real amateur hour stuff)

[richard]

now with sliders, might try to get the touch module on the spi bus next (should then be able to read touch x,y ps about 16 times faster than bit banging with shiftin )

[ruijc]

Excellent work Richard

Regards
Rui

[Ioannis]

This is so great work Richard. I believe you will put many here in the temptation to try at least the project.

I am very anxious too, but unfortunately our country is still under capital control and no orders can be placed on ebay etc...

Ioannis

[richard]

FIXED again

[Scampy]

Richard, Seems you've done some fantastic work on using TFT's with PBP.

I have a 2.8" display of the same resolution, but I'm running PBP 2.60c which lacks the usercommand function. Is there any chance you could advise / produce a library that works with version 2.60 ?

[HenrikOlsson]

I won't speak for Richard but I'd take this as the opportunity you've been looking for to finally justify the upgrade PBP3 - you've now found a feature it has that you want/need ;-)

/Henrik.

[richard]

I won't say its impossible but


lets take one simple usercmd

GLCDSTR 2,2,buff

macro called is

GLCDSTR?CCB macro Xin ,Yin ,Bin
MOVE?CW Xin , _X
MOVE?CW Yin ,_Y
MOVE?CB high Bin, FSR1H ;load highbyte
MOVE?CB low Bin, FSR1L ;load low byte
L?CALL tft_str_out
endm

translation to pbp2.6

X=2
Y=2
@ MOVE?CB high _buff, FSR1H ;load highbyte
@ MOVE?CB low _buff, FSR1L ;load low byte
call tft_str_out

not too difficult but its messy and could get very ugly very quickly , as henrik says an upgrade looks good

[Scampy]

Would love to upgrade, but being a casual user, and between jobs, upgrading is simply not an option for me at the monemt

[CuriousOne]

Just found this thread! I like idea very much, and I'd like to contribute, but my programming skills aren't that good. However, I'm way better on graphics, so I can create better looking fonts with chars of different dimensions. Just point me to font file so I can have look how it is organized.

[richard]

the fonts are really 8x8 fronts but the alpha/numeric char only use 7x8 with the last bit always o (for chr spacing)
there are two fonts in this thread the first is chr 32-90 and the second chr 32-127. I have a extended font (attached) that has
a radio button arrows ,play,stop,pause,speaker on/off symbols ,these use the full 8x8

this is the routine to display font chars

g
cga:
    g_fontoffset = (g_chr-font_begin)*8   +  fontaddr 
    
    if   (x+textsize*7) > width  then return
    if   (y+textsize*8) > height  then return
    if      (g_chr <font_begin) ||  (g_chr >font_end )   then return
    for ROW=0 to 7    ;font height   this would need to be a var set to font height size
        readcode g_fontoffset +ROW,ctemp  ;this would need to be able to "unpack" different font with bits
        for PIXEL=0 to 7   ;font width ; font width var req here too
            X1= X+PIXEL
            X0=X1
            Y0=Y+7-ROW
            Y1=Y0
            IF   TEXTSIZE  ==1 THEN
                GOSUB SETWINDOW
                if ctemp.0[PIXEL]  then
                      ;SETPIXEL X+PIXEL,Y+7-ROW ,FG
                      TFT_CMD_IN= FG>>8
                      GOSUB TFT_DATA
                      TFT_CMD_IN= FG
                      GOSUB TFT_DATA
                ELSE
                      ;SETPIXEL X+PIXEL,Y+7-ROW ,BG
                      TFT_CMD_IN= BG>>8
                      GOSUB TFT_DATA
                      TFT_CMD_IN= BG
                      GOSUB TFT_DATA
                ENDIF
           ELSE
                X0=X+PIXEL*TEXTSIZE 
                Y0=Y+( 7-ROW )*TEXTSIZE 
                X1= TEXTSIZE 
                Y1= TEXTSIZE
                if ctemp.0[PIXEL]  then
                     FrG=fg
                     GOSUB frectc
                ELSE
                     FrG=BG
                     GOSUB frectc
                ENDIF
            ENDIF
        NEXT
    next
    x=x+textsize*7       ;auto increment x for str function ;  and font width here too
RETURN

the arduino utft code can handle variable width fonts by storing a second table along with the font . that table records the h/w of every chr in the font and ascii val of the first and last chr in the font too.
its pretty straight forward but not trivial task to change the pgm to do that ; however all the text box code for buttons etc would need to be altered too