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So i was in my chair and i clicked run script and when i got up i tripped and lightly hit my breadboard and then the screen (ili9341) went white. Before i hit it, it was working but not anymore. I tryed decconect the pico and put it back on then but it didn't work so i tryed re downloading (i only put it into boot mode then put the circuitpy file and didn't use the flash_nuke file) circuitpy and didn't work as well, wiring seems fine and i dont think i broke anything, i just almost touched it.

Note: Actually i fixed it. I think it was just a little connection problem. It does it often but i figured it all so it's good, thx for helping and the links in the reponse are helpfull so thx.

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1 Answer 1

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(A) How to use Rpi Pico W to repair a broken ILI9341 LCD display module? - Selecting the module for testing.

ili9341 1

ili9341 2


(B) Rpi Pico W SPI Wiring Notes

I am thinking of using PicoW's SPI #1 to connect to the ILI9341 LCD display module (GPIO 21~27).

SPI 1


(C) ILI9341 SPI Wiring for troubleshooting

ili9341 spi wiring


(D) PicoW SPI0 signal timing

spi 1

spi 3

spi 4

spi 5


PicoW ili9341_SPI testing_2023mar26hkt1516 v01 program listing


(E) PicoW SPI reading ILI9341 registers

spi test 1

spi test 2


(F) PicoW ILI9341 Wiring Diagram

(a) Connect an SPI LCD Display to Your Raspberry Pi Pico Using MicroPython ILI9341 Driver - Bob, bytesNbits 2021dec29

(b) ILI9341 TFT LCD Single Chip Driver 240 RGB x 320 datasheet v1.11 - ilitek

ili9341 wiring


(G) RPi Pico/MicroPython + ILI9341 SPI Display with Touch - Rdagger

(a) RPi Pico/MicroPython + ILI9341 SPI Display with Touch, using rdagger/micropython-ili9341 - Hello Rpi, 2021mar06

(b) rdagger/micropython-ili9341 (MicroPython ILI9341Display & XPT2046 Touch Screen Driver) - 2022sep03


(H) ILI9341 LCD Touch Screen Setup and Troubleshooting

ouch screen signal pin wiring

(a) RPi Pico/MicroPython + ILI9341 SPI Display with Touch, using rdagger/micropython-ili9341 - HelloRpi 2021mar06

(b) ILI9341 2.4inch SPI Module ILI9341 SKU:MSP2402 - LcdWiki

(c) ILI9341 2.4inch SPI Module ILI9341 SKU:MSP2402 User Manual - LcdWiki

Touch screen signal line wiring

10  T_CLK   Touch SPI bus clock signal
11  T_CS    Touch screen chip select signal, low level enable
12  T_DIN   Touch SPI bus input
13  T_DO    Touch SPI bus output
14  T_IRQ   Touch screen interrupt signal, low level when touch is detected

(I) So I repeated the OP's white screen

white screen 1


PicoW ILI9341 Wiring Scheme v0.1

ili9341 wiring 1


(J) ILI9341 White Screen Troubleshooting Suggestion

rgb565 colours


ILI9341 White Screen Troubleshooting

(a) framebuf - microphon.org

(b) newdigate / rgb565_colors colour name definitions - github

(c) Color Depth (65k, 262k, 16.7M Colors) - focusLeds

(d) Multi Thread Coding on the Raspberry Pi Pico in MicroPython - Threads, Locks and problems!

(e) getis/pi-pico-spi-lcd-ili9341-st7789 Public


framebuf — frame buffer manipulation - micropython.org
This module provides a general frame buffer which can be used to create bitmap images, which can then be sent to a display.

class FrameBuffer
The FrameBuffer class provides a pixel buffer which can be drawn upon with pixels, lines, rectangles, ellipses, polygons, text and even other FrameBuffers. It is useful when generating output for displays.

For example:

import framebuf

# FrameBuffer needs 2 bytes for every RGB565 pixel
fbuf = framebuf.FrameBuffer(bytearray(100 * 10 * 2), 100, 10, framebuf.RGB565)

fbuf.fill(0)
fbuf.text('MicroPython!', 0, 0, 0xffff)
fbuf.hline(0, 9, 96, 0xffff)

(K) XPT2046 Touch Screen Controller

xpt2046 summary

Touch screen signal line wiring

10  T_CLK   Touch SPI bus clock signal
11  T_CS    Touch screen chip select signal, low level enable
12  T_DIN   Touch SPI bus input
13  T_DO    Touch SPI bus output
14  T_IRQ   Touch screen interrupt signal, low level when touch is detected

XPT2046 Touch Screen Controller Datasheet - XPTek 2007may


rdagger/micropython-ili9341 /xpt2046.py (Serial interface for XPT2046 Touch Screen Controller) - Rdagger


rdagger xpt2046.py program listing


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