Stop LOG messages to go out through UART0

[scastoldiprivate]

Hello all,

I've built a HCP bridge based on a NodeMCU ESP32, according on @Gifford47 instructions + firmware, and it works like a charm.
Now I want to build a smaller one (to fit in the small compartment of the Supramatic 4 motor), based on ESP32-S3-zero board.

Problem is : This board only has 1 UART (UART0), which is going to be used for RS485 com. with the motor.
Log messages go out through the USB CDC port AND the UART0. I couldn't figure out how to use USB CDC port for log messaging and UART0 for RS485 link.

Here are my platformio.ini changes :

[env:esp32-s3-devkitc-1]
board = esp32-s3-devkitc-1
board_upload.flash_size = 4MB
board_build.partitions = default.csv
build_flags = ${env:esp32.build_flags} 
	-DARDUINO_USB_CDC_ON_BOOT=1 
	-DBOARD_HAS_PSRAM
    -D CONFIG_ESP_CONSOLE_UART_NUM=0   ; Disable UART0 for console
    -D CONFIG_ESP_CONSOLE_USB_CDC=1    ; Enable CDC port CDC for console output
    -D CONFIG_USB_CDC_ENABLED=1        ; enable CDC functionnality on ESP32-S3

Log messages continue to be transmitted through the 2 ports (USB CDC AND UART0).

I'm sorry if that sounds like a dumb question... I don't have much experience in this environment yet.
Thanks for any help !