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asknik2022
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Joined: 26/03/2022
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Posts: 92

Posted: 03:37pm 22 Apr 2023

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I have juast tried using the BLIT and all I get is white space on BLIT WRITE

Do I need to have MISO Connected??
Edited 2023-04-23 01:48 by asknik2022

lizby
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Posted: 04:05pm 22 Apr 2023

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asknik2022 said I have juast tried using the BLIT and all I get is white space on BLIT WRITE

Do I need to have MISO Connected??

You need MISO for BLIT READ, but BLIT LOAD and BLIT WRITE will work without MISO.

Please post your code.

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed

asknik2022
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Posted: 04:28pm 22 Apr 2023

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I have now connected MISO and still white space only

How can I use blit load if I dont have sdcard??

asknik2022
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Posted: 04:28pm 22 Apr 2023

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what about peak and poke??

Mixtel90

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Posted: 04:53pm 22 Apr 2023

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BLIT works with memory buffers, not files. You have to load your image from a file first then BLIT READ it from the screen into a buffer. After that you can keep BLIT WRITEing it back to the screen.

There is a way to read from a file directly into a memory buffer, but I don't know if your image is ok for that.

Mick

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Preliminary MMBasic docs & my PCB designs

lizby
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Posted: 04:54pm 22 Apr 2023

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asknik2022 said I have now connected MISO and still white space only

How can I use blit load if I dont have sdcard??

Picomite has a flash file system built in.

Still need to see your code.

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed

asknik2022
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Posted: 05:40pm 22 Apr 2023

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lizby said

asknik2022 said I have now connected MISO and still white space only

How can I use blit load if I dont have sdcard??

Picomite has a flash file system built in.

Still need to see your code.

here is the code.

The BLIT co-ords are just testing

dim integer bitpat
cls
restore
for y = 0 to 63
for x = 0 to 15 ' 8 pixels per byte read
read bitpat
if bitpat = 999 then end ' unexpected end of data
for b = 7 to 0 step -1
if bitpat AND 2^b then pixel x*8 + 7 - b, y, rgb(blue)
next b
next x
next y

blit read 1,0,0,200,100
pause 1000
blit write 1,0,0,200,100

end

data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h06,&h03,&h00,&h60,&hC0,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h78,&h09,&h04,&h80,&h21,&h20,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h01,&h98,&h08,&h06,&h03,&h80,&h21,&h20,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&hA4,&h10,&h09,&h00,&h80,&h21,&h20,&h07,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&hA4,&h10,&h06,&h03,&h00,&h20,&hC0,&h00,&h80,&h00,&h00,&h00
data &h00,&h00,&h71,&h80,&hA4,&h10,&h00,&h00,&h00,&h00,&h00,&h01,&h00,&h00,&h00,&h00
data &h00,&h00,&h0A,&h40,&h98,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h80,&h3C,&h00,&h00
data &h00,&h00,&h3A,&h40,&h00,&h00,&h02,&h01,&h00,&h40,&h80,&h07,&h00,&h20,&h00,&h00
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data &h00,&h00,&h79,&h80,&h04,&h08,&h02,&h01,&h08,&h81,&h10,&h00,&h00,&h04,&h00,&h00
data &h00,&h00,&h00,&h00,&h04,&h08,&h02,&h01,&h08,&h81,&h11,&h04,&h00,&h38,&h00,&h00
data &h00,&h00,&h00,&h00,&h02,&h04,&h02,&h01,&h08,&h81,&h21,&h04,&h00,&h00,&h08,&h00
data &h00,&h00,&h00,&h84,&h02,&h04,&h0F,&hFF,&hFF,&hC3,&hE2,&h04,&h00,&h00,&h08,&h00
data &h00,&h00,&h00,&hC2,&h01,&h07,&hF0,&h00,&h00,&h3B,&hFE,&h08,&h40,&h40,&h08,&h00
data &h00,&hFE,&h00,&h62,&h01,&hF8,&h00,&h00,&h00,&h03,&hFF,&hE8,&h40,&h80,&h7F,&h00
data &h00,&h00,&h00,&h21,&h1E,&h00,&h04,&h00,&h80,&h00,&h7F,&hFE,&h80,&h80,&h08,&h00
data &h00,&h00,&h03,&h31,&hE0,&h00,&h04,&h00,&h80,&h04,&h01,&hFF,&hC1,&h00,&h08,&h00
data &h00,&h00,&h07,&h1E,&h00,&h40,&h00,&h00,&h00,&h04,&h00,&h1F,&hFA,&h00,&h08,&h00
data &h00,&h00,&h07,&hF0,&h00,&h40,&h3B,&h07,&h60,&h00,&h00,&h01,&hFF,&h00,&h00,&h00
data &h00,&h00,&h03,&h80,&h00,&h00,&h34,&h81,&h90,&hCC,&hC0,&h00,&h3F,&hC0,&h00,&h00
data &h00,&h00,&h0C,&h00,&h03,&h30,&h0C,&h82,&h90,&h53,&h20,&h00,&h07,&hF8,&h00,&h00
data &h00,&h00,&h70,&h40,&h00,&hC8,&h3B,&h02,&h60,&h53,&h20,&h00,&h00,&hFE,&h00,&h00
data &h00,&h01,&h80,&h20,&h01,&hC8,&h00,&h00,&h00,&h4C,&hC0,&h00,&h00,&h3F,&h80,&h00
data &h00,&h06,&h00,&h00,&h03,&h30,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h07,&hE0,&h00
data &h00,&h08,&h00,&h0C,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h01,&hFC,&h00
data &h00,&h30,&h00,&h12,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h78,&h00
data &h00,&h00,&h40,&h12,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h10,&h00
data &h00,&h00,&hA0,&h0C,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h44,&h00,&h00,&h00,&h02,&h02,&h30,&hC0,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h08,&h00,&h00,&h00,&h03,&h06,&h30,&hC0,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h10,&h00,&h00,&h00,&h01,&h8C,&h30,&hC0,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h22,&h00,&h00,&h00,&h00,&hD8,&h30,&hC0,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h05,&h00,&h00,&h00,&h00,&h70,&h19,&h80,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h02,&h00,&h00,&h00,&h00,&h20,&h0F,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data &h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00,&h00
data 9999

vegipete

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Joined: 29/01/2013
Location: Canada
Posts: 1110

Posted: 08:39pm 22 Apr 2023

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Here it is 'fontified'.

cls
text mm.hres/2,mm.vres/2,"!",CM,8,,rgb(white),0
end

' VUMeter2.bas
' Font type : Full (1 character)
' Font start : CHR$(33) "!"
' Font size : 112x54 pixels
' Memory usage : 760 bytes
DefineFont #8
01213670
00000000 00030600 0000C060 00000000 09000000 20218004 00000000 00000000
8004093C 00002021 00000000 06049C01 20218004 00000000 A2000000 80030904
00002021 00000000 0908A200 20218000 0000000F A2000000 80000908 80002021
00000000 0608A200 C0200003 00008000 A2C07100 00000008 00010000 0A000000
0008A220 00000000 00000001 9C200A00 00000000 80000000 1200007C 02000020
80400001 00408000 00202200 00010200 000F8040 42000040 02080020 80400801
00780000 04204200 08010208 000090C1 79000004 020804C0 10810801 00040000
04000000 08010208 00041181 00000004 02080200 11810801 00780004 02000000
08010204 00042181 00001000 02040284 22810801 10000004 01C20000 FFFF0F04
400CE2C3 00001040 F0070142 FA3B0000 10404008 0162007F 000000F8 4008FF03
0000FE80 04000721 FF038000 108040E8 38310000 80000400 80FC7F00 02001080
0400C011 07048000 100081FF 001E0700 80000440 C1FF0104 07001000 00400018
00040000 0000F23F 00200700 60073B20 FE070000 07000000 242000C0 C0CC9081
0000FF01 00000300 90813400 7F002053 04000080 0C980300 20539082 00E01F00
00401800 90820C64 07002053 600000F8 3BE40120 20536002 00FC0100 00208000
00000064 00002053 000100FF 00640010 C04C0000 803F0000 03000002 00000098
00000000 0004C00F 0000000E 00000000 F0070000 00110018 00000000 00000000
0000F801 00000011 00000000 F0000000 00116000 00000000 00000000 90006000
00000011 00000000 20000000 00119000 00000000 00000000 96000000 0200000E
00C03002 00000000 00006400 30060300 000000C0 0C000000 03000000 00C0308E
00000000 00000800 308C0100 000000C0 18000000 00000000 00C030D8 00000000
00001300 30D80000 000000C0 34000000 00000080 00C03070 00000000 00800400
39700000 000000C0 04000000 00000080 00801F20 00000000 00000300 0F200000
00000000 00000000 00000000 00000000 00000000
End DefineFont

Visit Vegipete's *Mite Library for cool programs.

phil99

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Joined: 11/02/2018
Location: Australia
Posts: 2140

Posted: 04:27am 23 Apr 2023

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@asknik2022 your code works perfectly on my LCD. The blue VU sprite can be quickly "blitted" to anywhere on the screen.
So it seems you are still not able to read back pixels from the screen.

@vegipete's "fontified" version also works perfectly.

Here is a test program for the LCD

' LCD Panel Tester
Print "Screen Colours Counter Pixel Test"
Dim a$(2)=(" Blues"," Greens"," Reds")
Dim integer b, c, n
CLS 127<<8
Text 30, MM.VRes *.8, " Pixel Test ",,, 2, RGB(white), RGB(0,0,127)
For b = 0 To 16 Step 8
n = 0
For c = 0 To 255
Pixel c+30, b+25, c << b
If Pixel(c+30,b+25) = c << b Then Inc n
Next
Print
Print n; a$(b/8); " ="; Log(n)/Log(2); " bits"
Text MM.HRes/2,MM.VRes/2-b*4,Str$(n)+a$(b/8)+" = "+Str$(Log(n)/Log(2))+" bits",C,,2,255<<b
Next
Print
Pause 3000

Print "Blit test"
For v = 0.6 To 0.3 Step -.1
Pause 500
Blit 10, MM.VRes*.2, 10, MM.VRes*v, MM.HRes-20, MM.VRes*.3
Box 10, MM.VRes*v, MM.HRes-20, MM.VRes*.3
Next
Text 30, MM.VRes *.8, " Blit Test ",,, 2, RGB(white), RGB(0,0,127)
Pause 3000

Print "Drive A: test"
Text 30, MM.VRes *.8, " Drive A: Test ",,, 2, RGB(white), RGB(0,0,127)
Save Image "A:/Drive A Test.BMP", MM.HRes*.2, MM.VRes*.2, MM.HRes*.3, MM.VRes*.7
Pause 2000
For v=.1 To .4 Step .1
Load Image "A:/Drive A Test.BMP", MM.HRes*v, mm.2res*.2
Pause 500
Box MM.HRes*v, mm.2res*.2, MM.HRes*.3, MM.VRes*.7
Next
End

It first counts the number of colours that can be read back from the screen then blits a chunk from the bottom to other locations up the screen. It then saves a BMP from the left to the flash drive (A:) and loads it to other places across the screen.

The ILI9341 is one of the easiest to get working so check all wiring from LCD_SDO to MISO on the Pico to ensure it matches the manual.
Edited 2023-04-23 15:26 by phil99

asknik2022
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Joined: 26/03/2022
Location: United Kingdom
Posts: 92

Posted: 06:46am 23 Apr 2023

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WOW.. Thanks Guys

I will try thsi later today.

phil99

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Posted: 07:50am 23 Apr 2023

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Just noticed a typo near the end of the tester program.

Pause 500
Box MM.HRes*v, mm.2res*.2, MM.HRes*.3, MM.VRes*.7
Next
End

Change mm.2res*.2, to mm.VRes*.2,
.

asknik2022
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Posted: 08:01am 23 Apr 2023

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When I run this code i get the following error

Screen Colours Counter Pixel Test

0 Blues =
[14] Print n; a$(b/8); " ="; Log(n)/Log(2); " bits"
Error : Divide by zero

phil99

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Posted: 08:41am 23 Apr 2023

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Yes, as it is getting nothing back from the display "0 Blues =" so it can't calculate the number of bits.

For a ILI9341 it should show:

32 Blues = 5 bits
64 Greens = 6 bits
32 Reds = 5 bits

Until you fix the SDO to MISO issue copy my image of the VU meter from earlier (right click on the image and select 'save as'). It is in PNG format as TBS won't upload BMP files. Open it in paint then save it as BMP. **see edit

Then use XModem to transfer it to the Pico flash drive A:\

In TeraTerm at the Pico prompt type:-

XMODEM R "VU_Meter.BMP"

Then click on File -> Transfer -> XModem -> Send
then navigate to the BMP and select it.

You need to be fairly quick or it will time out.

Type 'files' to see the contents of A:/

Once all that is done your program can load it to a Blit buffer.

Edit
Here is a 1 bit per pixel version, it should load a little faster.

VU_Meter_1bit.zip

then after saving to A:
CLS 255
load image "VU_Meter_1bit.BMP"
blit read #2,1,1,128,64
blit write #2, mm.hres/2-64, mm.vres/2-32

or just just load directly to the location of your choice.
CLS 255
load image "VU_Meter_1bit.BMP", mm.hres/2-64, mm.vres/2-32

.
Edited 2023-04-23 22:15 by phil99

lizby
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Posted: 04:31pm 23 Apr 2023

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asknik2022 said

lizby said

asknik2022 said I have now connected MISO and still white space only

How can I use blit load if I dont have sdcard??

Picomite has a flash file system built in.

Thanks for the code. It works for me. Here it is on a ILI9488, BLITted 20 times. I replaced your BLIT READ and BLIT WRITE with this:

Blit read 1,0,0,100,60
Pause 1000
For i=0 To 3
For j=0 To 4
Blit write 1,i*100,j*60
Next j
Next i
End

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed

asknik2022
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Posted: 06:49pm 23 Apr 2023

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i have just manually wired up a 3.2"" ILI9341 TFT SPI 240x320 v2.0 board including MISO to GP 16 and still will not rrun the test prog form @phil99

OPTION SYSTEM SPI GP18,GP19,GP16
OPTION LCDPANEL ILI9341, RLANDSCAPE,GP15,GP14,GP13

lizby
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Posted: 06:55pm 23 Apr 2023

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Can you provide a photo front and back of your ILI9341? They're pretty standard, but there could be some wonky ones.

How are you powering the backlight pin?

What kind of "still will not run the test prog"? Error? Nothing on screen?

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed

matherp
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Posted: 08:07pm 23 Apr 2023

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Has it got touch? Blit won't work unless touch is configured as the touch chip will corrupt MISO if fitted and not configured

phil99

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Posted: 01:16am 24 Apr 2023

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The BMP format supports 24 bit background and foreground colours for 1 bit / pixel images. Most viewers, including MMBasic will display them correctly however most editors only allow black and white.
You can use a hex editor to change the relevant bytes to get any colours.

Hex Byte numbers (starting from &H00)

Blue Green Red
Background 36 37 38
Foreground 3A 3B 3C

Values can be 00 to FF

Edited 2023-04-24 11:25 by phil99

lizby
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Posted: 12:45pm 24 Apr 2023

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Not specifically related to this thread, other than that it has to do with SPI LCDs, but 3.5-inch 480x360 SPI ILI9488 with touch and BLITtable (at least the one I just got) is $7.24USD at Aliexpress. (Make sure you select the one with touch.)

This requires a hardware mod to make MISO work--as simple as a 680R resistor between touch MISO (DO) and LCD MISO, with DO wired to the PicoMite MISO. Some have needed a diode version of this, but just the 680R has always worked for me for the 3 ILI9488s that I have.

This is a really good price for an LCD which has twice as many pixels as the ILI9341. They were about twice that a year ago.

(Note: there are some ILI9488s which use different chips from the one shown, and they won't work for BLIT READ. With Aliexpress, there's no guarantee that you will get what is pictured, but I've just ordered another one.)

PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed

paceman
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Posted: 10:58am 25 Apr 2023

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Just having a look at it. The specs say they're using an ADS7843 for the touch controller instead of our 'normal' XPT2046. Not sure if they're equivalent but something to check out.
Greg

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