ESP32 S3 N16R8 Upload issue

[1Pats___]

Hi,
connected the new board. Try to upload the sketch, but fail. The board itself is recognized, even prints some data to the serial monitor (default app or smth , as boards have been bought recently), but uploading fails. Tried to change settings, manipulate with boot button etc, but not successful so far. Seems the problem is with settings, as I tried a second board with the same brand. Could you point me to some info describing Ardino IDE setings for such boards

[lbernstone]

If you have a port labelled UART, use that.
Otherwise, you will need to hold down the boot button as you plug in the device for the first upload (make sure to choose usb-cdc)
https://docs.espressif.com/projects/ard ... le-version

[1Pats___]

Thks, played with the boot a lot, the board itself is connected, shows info on the status bar, and even prints some info on Serial. Also followed this video https://www.youtube.com/watch?v=oYE88c4yrNw

Will study doc from your link. Hopefully it will help...

[lbernstone]

Post the log rather than your interpretation. Sounds more like a bad cable to me.

[1Pats___]

Sketch uses 275659 bytes (21%) of program storage space. Maximum is 1310720 bytes.
Global variables use 20700 bytes (6%) of dynamic memory, leaving 306980 bytes for local variables. Maximum is 327680 bytes.
"C:\Users\janis\AppData\Local\Arduino15\packages\esp32\tools\esptool_py\5.1.0/esptool.exe" --chip esp32s3 --port "COM8" --baud 921600 --before default-reset --after hard-reset write-flash -z --flash-mode keep --flash-freq keep --flash-size keep 0x0 "C:\Users\janis\AppData\Local\arduino\sketches\6AAA5187E21B93257E5CE566B22CFE3A/sketch_feb19a.ino.bootloader.bin" 0x8000 "C:\Users\janis\AppData\Local\arduino\sketches\6AAA5187E21B93257E5CE566B22CFE3A/sketch_feb19a.ino.partitions.bin" 0xe000 "C:\Users\janis\AppData\Local\Arduino15\packages\esp32\hardware\esp32\3.3.4/tools/partitions/boot_app0.bin" 0x10000 "C:\Users\janis\AppData\Local\arduino\sketches\6AAA5187E21B93257E5CE566B22CFE3A/sketch_feb19a.ino.bin"
esptool v5.1.0
Serial port COM8:
Connecting......................................
A fatal error occurred: Failed to connect to ESP32-S3: No serial data received.
For troubleshooting steps visit: https://docs.espressif.com/projects/esp ... oting.html

Failed uploading: uploading error: exit status 2

[1Pats___]

Have another S3. on Chip: ES32-S3_WROM-1. Works fine. Connected newly bought boards with the same cable - failed.
Board connected (can see it on status bar) and even prints some info to Serial -looks like from the default app uploaded by the manufacturer. Tried on TWO (!) newly bought boards. The same!

[1Pats___]

Interesting - if I unplug S3 WROM-1 . which is working fine, and plug S3 N16R8, COM, port is no longer valid. A new one appears. If you select it, the board is recognized- appears in the status line and prints something in the Serial monitor. but upload is not working

[1Pats___]

Communicated with ChatGPT, found the reason:
- Serial Monitor. still open after the previous board test

What Is Happening
During upload:

IDE opens the COM port
Board resets
USB disconnects
Windows creates a new COM port
IDE still tries to use the old one

Closed Serial Monitor, and upload works!