New ESP32-S3 N16R8

sivar2311 · July 4, 2024, 5:29pm

This file has

handledexception/platform-espressif32/blob/deb6aa342245ad7bcb3d9ed69050f203779833ab/boards/esp32-s3-devkitc-1-n16r8v.json#L9-L13


      
          "extra_flags": [
            "-DARDUINO_ESP32S3_DEV",
            "-DBOARD_HAS_PSRAM",
            "-DARDUINO_USB_MODE=1",
            "-DARDUINO_USB_CDC_ON_BOOT=1"

Note -DARDUINO_USB_MODE=1 and especially -DARDUINO_USB_CDC_ON_BOOT=1 !

DARDUINO_USB_CDC_ON_BOOT=1 will route the output of the Serial object to the native USB port labeled “USB” on your board.

See detailed description here: ESP32-S3 native USB interface and Serial Monitor missing first messages - #10 by sivar2311

There are several solutions for this:

Edit the board.json and remove those two lines
Leave the boards.json as is and add the following lines to your platformio.ini:

build_unflags = 
  -DARDUINO_USB_CDC_ON_BOOT
  -DARDUINO_USB_MODE

Use a different boards.json like mine: platformio_boards/boards/esp32-s3-devkitc1-n16r8.json at main · sivar2311/platformio_boards · GitHub
Use the default esp32-s3-devkitc-1 and adjust the settings in platformio.ini

[env:esp32-s3-devkitc-1]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
board_build.arduino.memory_type = qio_opi
board_build.flash_mode = qio
board_build.prsam_type = opi
board_upload.flash_size = 16MB
board_upload.maximum_size = 16777216
board_build.extra_flags = 
  -DBOARD_HAS_PSRAM

Is this issue about WIFI or OTA?

Unfortunately there are a lot of boards on aliexpress available which does not have a genuine ESP32-S3 module. These boards have wifi issues. See this thread Unable to connect to WiFi, ESP32S3 goes in loop (IDFGH-7755) · Issue #9296 · espressif/esp-idf · GitHub

In general, both ports COM and USB can be used for uploading and monitoring!

I suggest to fix one issue after the other and keep this for later.

The default GPIO for the LED is 48 - See

github.com

espressif/arduino-esp32/blob/33c9552c5e226c0016898ba385e6b4148e98eb20/variants/esp32s3/pins_arduino.h#L13-L19


      
          #define PIN_NEOPIXEL        48
          // BUILTIN_LED can be used in new Arduino API digitalWrite() like in Blink.ino
          static const uint8_t LED_BUILTIN = SOC_GPIO_PIN_COUNT+PIN_NEOPIXEL;
          #define BUILTIN_LED  LED_BUILTIN // backward compatibility
          #define LED_BUILTIN LED_BUILTIN  // allow testing #ifdef LED_BUILTIN
          // RGB_BUILTIN and RGB_BRIGHTNESS can be used in new Arduino API neopixelWrite()
          #define RGB_BUILTIN LED_BUILTIN

You can simply use

digitalWrite(LED_BUILTIN, HIGH);
neopixelWrite(RGB_BUILTIN, r, g, b);

But maybe your board is using another GPIO.

A good ESP32-S3 board on aliexpress is “Tzt ESP32-S3-DevKitC-1 ESP32-S3” labled with “YD-ESP32-S3 2022-VI.3” on the bottom. This one comes with a genuine ESP32-S3 module and GPIO 48 is used for the LED. There is also a github repository for this board GitHub - vcc-gnd/YD-ESP32-S3: YD-ESP32-S3 Micropython VCC-GND Studio