ESP32-S3 Bootloop Problem

[canik01@yahoo.com]

We made our own ESP32-S3 board. When we first plug a USB TYPE C from Windows PC, It boots continiously. We used esptool.exe to load many bootloader.bin or similar file, but nothing changed. We still have bootloop problem.

The message in serial port is:

ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x7 (TG0WDT_SYS_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x40043ac8
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd0108,len:0x1634
load:0x403b6000,len:0xe74
load:0x403ba000,len:0x31c8
Checksum failure. Calculated 0x9f stored 0xde
ets_main.c 329
------(loops)------

How can we solve this problem?

[canik01@yahoo.com]

ESP_Sprite, any answer to this serious problem?

[ESP_Sprite]

Dunno. What have you already tested? Can you post your schematic? What SDK are you using?

[canik01@yahoo.com]

Thank you for your interest.

The board is custom designed made by us. We have 8 MB of flash inside the ESP32-S3 (FN8 Model) chip. We also have 16 MB of flash (WINBOND W25Q128JVSIQ) on the board next to ESP32-S3.

Our problem is the bootloop. We use Arduino IDE 1.8.19. It loops continiously in the boot partition.

We have tested many ESP32-S3 board's bin files.
We have uploaded bootloader.bin, partition_table.bin, ota_data_initial.bin and tinyuf2.bin files mostly using esptool.exe on Windows CMD.EXE. Those 4 of *.bin files can be found inside this ZIP file:
https://github.com/adafruit/tinyuf2/rel ... 0.12.3.zip

Our partition table is attached.
Our schematic is attached.
The output from Serial Monitor of Arduino is attached (Serial Monitor COM39 Output.txt).

[ESP_Sprite]

The -FN8 version of the ESP32S3 already has 8MiB of (octal-spi) flash inside; that's likely interfering with the flash you already installed. Desolder your external flash chip and everything will likely work.

[canik01@yahoo.com]

Yeeeeesssssssss. This is it. 17 days!!! And finally we did it. Thank you very much ESP_Sprite. I really appreciate what you are doing. If you come to Istanbul, find me +90 5323918755.