ER-TFT035IPS-6 Init problem using ESP32-S3

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Hello everyone,

I'm hoping to get some help with a persistent issue I'm facing with a new display project. I am getting a Guru Meditation Error (StoreProhibited) when trying to initialize an ILI9488 display with an ESP32-S3.

My Goal: To get a 3.5" 320x480 TFT display (Model: ER-TFT035IPS-6) working with an ESP32-S3-DevKitC-1 using the TFT_eSPI library.

I have the TFT attached to a 50 pin FFC connector, and I have IM0 IM1 and IM2 attached to 3.3V to set for 4wire 8 bit SPI. As of
now Im not using backlight, I just want to see if I can get it to init

The Problem: When I run my minimal initialization sketch, the ESP32 crashes and enters a reboot loop. The serial monitor shows the following Guru Meditation Error:

Guru Meditation Error: Core  1 panic'ed (StoreProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x420038fa  PS      : 0x00060530  A0      : 0x82003ac4  A1      : 0x3fcebef0  
A2      : 0x3fc97e2c  A3      : 0x00000000  A4      : 0x0000000b  A5      : 0x0000000b  
A6      : 0x000000ff  A7      : 0x60004000  A8      : 0x00000010  A9      : 0x08000000  
A10     : 0x3fc97ee4  A11     : 0x01312d00  A12     : 0x00000001  A13     : 0x00000000  
A14     : 0x01312d00  A15     : 0x3fcebec8  SAR     : 0x00000004  EXCCAUSE: 0x0000001d  
EXCVADDR: 0x00000010  LBEG    : 0x40056f5c  LEND    : 0x40056f72  LCOUNT  : 0xffffffff  


Backtrace: 0x420038f7:0x3fcebef0 0x42003ac1:0x3fcebf20 0x42002646:0x3fcebf50 0x42007706:0x3fcebf80 0x4037c095:0x3fcebfa0




ELF file SHA256: 6f865786e

Rebooting...
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x40378d2e
SPIWP:0xee
Octal Flash Mode Enabled
For OPI Flash, Use Default Flash Boot Mode
mode:SLOW_RD, clock div:1
load:0x3fce2820,len:0x1180
load:0x403c8700,len:0xc2c
load:0x403cb700,len:0x311c
entry 0x403c88b8

Here is the contents of my User_Setup

// This is a pre-configured User_Setup.h file for your specific hardware.
//
// Hardware Details:
// 1. MCU:      ESP32-S3-DevKitC-1
// 2. Display:  3.5" 320x480 TFT with ILI9488 controller
// 3. Interface: 4-wire SPI
//
// Action: Replace the contents of your existing User_Setup.h file with this code.
// Location: Documents/Arduino/libraries/TFT_eSPI/User_Setup.h

// -- DO NOT EDIT ANYTHING ABOVE THIS LINE --

#define USER_SETUP_INFO "User_Setup for ESP32-S3 + ILI9488"

// ##################################################################################
//
// Section 1: Select the display controller
//
// ##################################################################################

#define ILI9488_DRIVER


// ##################################################################################
//
// Section 2: Define the pins for your ESP32-S3
//
// ##################################################################################

// -- This pinout matches the wiring table we created for your breadboard setup --
#define TFT_MOSI 11 // Connect to the pin labeled "11" on your dev board (FPC Pin 34)
#define TFT_SCLK 12 // Connect to the pin labeled "12" on your dev board (FPC Pin 36)
#define TFT_MISO 13 // Connect to the pin labeled "13" on your dev board (FPC Pin 33)

#define TFT_CS   10 // Chip Select, connect to pin "10" (FPC Pin 38)
#define TFT_DC   2  // Data/Command, connect to pin "2" (FPC Pin 37)
#define TFT_RST  4  // Reset, connect to pin "4" (FPC Pin 10)

// For the backlight, this pin connects to the Gate of your MOSFET
// #define TFT_BL   3  // Backlight PWM control, connect to pin "3"


// ##################################################################################
//
// Section 3: Define the SPI settings
//
// ##################################################################################

// The ESP32-S3 has fast hardware SPI, which we will use.
// We are using a lower frequency to improve stability for breadboard testing.
#define SPI_FREQUENCY  20000000
#define SPI_READ_FREQUENCY  10000000


// ##################################################################################
//
// Section 4: Touch controller settings
//
// ##################################################################################

//#define TOUCH_CS 21 // This is commented out to avoid conflicts.


// ##################################################################################
//
// Section 5: Font selection
//
// ##################################################################################

#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

Here is the simple code Im using :

#include <SPI.h>
#include <TFT_eSPI.h> // Include the TFT library

// Create an instance of the TFT_eSPI class.
// The library will use the pins you defined in your User_Setup.h file.
TFT_eSPI tft = TFT_eSPI();

void setup() {
  // Start serial communication so we can see the results.
  Serial.begin(115200);
  delay(1000); // Wait a moment for the serial port to connect.
  Serial.println("\n--- TFT Initialization Test ---");

  // Attempt to initialize the display. This is the main test.
  // The tft.init() function communicates with the ILI9488 controller.
  tft.init();
  Serial.println("tft.init() called.");

  // The ESP32 will crash with a Guru Meditation Error before this point
  // if it cannot communicate with the display.

  // If the code reaches this line, it means the initialization was successful
  // and the crash is gone.
  Serial.println("\nSUCCESS: Display initialized without errors!");
  Serial.println("You can now proceed to connect the backlight circuit.");

  // As a final test, let's fill the screen's memory with a color.
  // You won't see this yet, but it confirms the drawing commands are working.
  tft.fillScreen(TFT_BLUE);
  Serial.println("Screen memory has been filled with blue.");
}

void loop() {
  // The loop is empty for this test. The program will do nothing after setup.
}

Thanks for any help you can provide
mike

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Its working now with one line please refer to this post #3752

#define USE_HSPI_PORT