Esp32S3 : tusb_serial_device not working

[ThomasESP32]

Good afternoon,


I would like to use the tusb_serial_device example in order to read/write some strings over USB.
Is it the good example to use ?

My problem is that after building and flashing this example program, nothing is printed in the Console.
I get the following messages :

←[0;33m--- Warning: GDB cannot open serial ports accessed as COMx←[0m
←[0;33m--- Using \\.\COM25 instead...←[0m
←[0;33m--- esp-idf-monitor 1.6.2 on \\.\COM25 115200←[0m
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H
ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x0 (DOWNLOAD(USB/UART0))
Saved PC:0x40041a76
--- 0x40041a76: hci_le_ltk_req_neg_reply_cmd_handler in ROM

waiting for download
--- To exit from IDF monitor please use "Ctrl+]". Alternatively, you can use Ctrl+T Ctrl+X to exit.

Do you know what happen please?
thank you for your help on the subject,

best regards,

Thomas TRUILHE

[ves011]

Your bootloader is in download mode.
Pres again hw reset button while bootmode pin (GPIO0) is not low.