The connection diagram at https://www.visualmicro.com/page/ESP32S3-USB-Debugging.aspx shows a USB cable being hardwired to GPIO19 & 20.  Is this unnecessary as on my module (like the one in your connection picture) the USBC port called UART is already connected to GPIO19 & 20?

I maybe having an issue related to this topic.  I am using VS2023 with the latest VM extension.  My project uses an ESP32-S3.  I am using the USB-to-serial feature of the device with the USB data pins connected to pins 19 and 20 on the ESP32.

My problem is that the code uploads just fine but now serial port is established by the code.  (Serial fails.)  Oddly, in a previous project, I used an ESP32-C3-Mini with no issues.

With a little reasearch, I found that USB CDC on Boot needs to be enabled.  When I do that, I get a compiling error:

Compiling 'DMXFader' for 'ESP32S3 Dev Module(esp32_esp32s3)'
ld.exe: DMXFader.cpp.o:(.literal._Z5setupv+0x0): undefined reference to HWCDCSerial

collect2.exe*: error: ld returned 1 exit status

Error linking for board ESP32S3 Dev Module(esp32_esp32s3)
Build failed for project 'DMXFader'
 

I then used the Arduino IDE with the correct compiling setting.  My code compiles and runs fine.

One more thing.  I did all of these test with my board as well as the Espressif ESP32-C3 development board.  They both had the same result.

Your assistance is appreciated.  (BTW, VM is terrific!)

Sure.  Sorry about that omission.

Well I'll be damned.  That worked!  Not sure why but it did.  Thank very much!