Flowcode Support Board

I have a ESP32-DEVKITC-32UE board and it uses UART0 (Chan1 in Flowcode) to program via the built in USB bridge.
This works fine, but I also have a UART component in my program.
If I set that component's UART channel to anything other than chan1 (U0) - (including trying to use the software UART choice), it fails to compile/flash. This is regardless of which pins I map to TXD & RXD.
I would prefer to reserve UART0 for programming, as otherwise I'd have to keep removing zero ohm links to isolate the bridge.
My hardware requirement is to connect the UART i/o pins to another MCU - so I can't use USB.

As far as I can tell from the ESP data sheets, my ESP32 variant really does have 3 UARTs - 2 of which have default pin mappings.

Any thoughts?

Hello,

Please can you attach your project file showing the problem and we will investigate for you.

It seems that the problem was caused by my having left one UART RXINT enable/disable call set to UART0. That was enough to upset the compiler!