Many thanks

[jfl-207]

Hi,
my firts post will not be for a question or for a problem, but for a big thumb up.
I was almost to the point of throwing away my TFT Screen
http://www.lcdwiki.com/3.5inch_Arduino_Display-Mega2560.
while it 's working fine on Arduino MEGA 2560 (16 bit parallel interface) i was absolutly unable to get it working on Pico RP2040.
All the library i've found (including your) where only able to work with the 8 bit version of this chip.
At the last moment, i've found your test version of the librairy with 16-bits support for ili9341.
Not really knowing what i was doing (i'm not a c++ guy) i've tested some modification in file "Setup103_RP2040_ILI9486_parallel.h"
And now screen is working perfectly in 16-bits.

here is my modified setup
`// This setup is for the RP2040 processor only when used with 8 bit parallel displays
// See SetupX_Template.h for all options available
#define USER_SETUP_ID 103

////////////////////////////////////////////////////////////////////////////////////////////
// Interface
////////////////////////////////////////////////////////////////////////////////////////////
//#define TFT_PARALLEL_8_BIT
#define TFT_PARALLEL_16_BIT

////////////////////////////////////////////////////////////////////////////////////////////
// Display driver type
////////////////////////////////////////////////////////////////////////////////////////////
#define ILI9486_DRIVER

////////////////////////////////////////////////////////////////////////////////////////////
// RP2040 pins used
////////////////////////////////////////////////////////////////////////////////////////////

// These pins can be moved and are controlled directly by the library software
#define TFT_RST 18 // Reset pin
#define TFT_CS 19 // Do not define if chip select control pin permanently connected to 0V
//#define TFT_RD -1 // Do not define, read pin must be permanently connected to 3V3

// Note: All the following pins are PIO hardware configured and driven
#define TFT_WR 16 // Write strobe pin
#define TFT_DC 17 // Data Command control pin

// PIO requires these to be sequentially increasing
#define TFT_D0 0
#define TFT_D1 1
#define TFT_D2 2
#define TFT_D3 3
#define TFT_D4 4
#define TFT_D5 5
#define TFT_D6 6
#define TFT_D7 7
#define TFT_D8 8
#define TFT_D9 9
#define TFT_D10 10
#define TFT_D11 11
#define TFT_D12 12
#define TFT_D13 13
#define TFT_D14 14
#define TFT_D15 15
//*/

////////////////////////////////////////////////////////////////////////////////////////////
// Fonts to be available
////////////////////////////////////////////////////////////////////////////////////////////
#define LOAD_GLCD // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH
#define LOAD_FONT2 // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters
#define LOAD_FONT4 // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters
#define LOAD_FONT6 // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm
#define LOAD_FONT7 // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:.
#define LOAD_FONT8 // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-.
#define LOAD_GFXFF // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts

#define SMOOTH_FONT

////////////////////////////////////////////////////////////////////////////////////////////`

Once again a real BIG Thumb up from an happy user

[jfl-207]

Hi again.
Seems i was a little bit too optimist.
Grafic are fine, but i realised that colors a completly messed up.
White and black seems ok.

blue also
but Green appear yellow and Red doesn't show at all.

Any help would be nice

Regards
Jean-Francois

[Bodmer]

What is the clock frequency selected for the RP2040 in the Arduino IDE menu?

Try a lower frequency and upload the sketch again.

[jfl-207]

Hi thanks for your reply.
i was on 133, went down to 50.
still no luck except that green appear more reddish but still no red on screen.

Maybe related to RGB/BGR and or 565/666 colors ?
Way to far for my basic knowledge

regards
j-f

[Bodmer]

Can you also try the latest Github master library. Save your setup somewhere safe first!