ILI9486 and RP2040 problem

[KBLiveSolutions]

Hi

I am trying to get my Pico work with this Waveshare 4'' display
No matter what I've tried, I only get a white screen

I am using
Arduino_DataBus *bus = new Arduino_RPiPicoSPI(TFT_DC, TFT_CS, PIN_SPI0_SCK /* SCK */, PIN_SPI0_MOSI /* MOSI */, PIN_SPI0_MISO /* MISO */, spi0 /* spi */);
Arduino_GFX *gfx = new Arduino_ILI9486_18bit(bus, TFT_RST, 0 /* rotation */, false /* IPS */);

and pins

Vin -> Vcc
GND -> GND
GPIO 17 -> CS
GPIO 26 -> RESET
GPIO 27 -> D/C
GPIO 19(MOSI) -> SDI(MOSI)
GPIO 18(SCK) -> SCK
GPIO 28 -> LED

but all I get is a white screen.
What can possibly be wrong ?

I am using Earle Philhower port of the Pico.

[moononournation]

Just tested with my old ILI9486L display, it is ok with latest software.

[moononournation]

Seems the board in your link is for 5V board, it may not support Pico running in 3.3V.

[KBLiveSolutions]

Thanks for your answer.
From what I understand, it seems to be 3.3V tolerant

Do you have a link to a board similar to yours ?