ESP32 Forum

I have a WROVER board and when I connect that to Ubuntu (under Virtual Box under Windows 10), I find that the USB device shows up as FTDI Dual RS232-HS. When I attach this to my Linux environment, I find that I have two entries in /dev:

* /dev/ttyUSB0
* /dev/ttyUSB1

This differs from my previous ESP32 experience where I only found one device appear.

I also seem to be finding that to flash, I need to target /dev/ttyUSB1 and not what I previously used (/dev/ttyUSB0). Fortunately I can flash with an environment variable set:

$ export ESPPORT=/dev/ttyUSB1

My question here is ... is this working as designed?

Yes, more or less. From memory, the FT2232H only supports JTAG on the first channel, and we haven't been able to configure the FT2232 in such a way that it hides that first port from the serial driver and still works on all OSses without trying to impersonate another device.