ESP32 Forum

Hi,

I am designing a circuit containing a ESP32-WROOM-32E, a W5500 SPI ethernet module and a pin header for JTAG debugging.
I noticed the pins for JTAG debugging are:
tms, tck, tdo, tdi
13, 16, 23, 12
And the pins for VSPI are:
mosi, miso, sclk, cs
23, 19, 18, 5
And the pins for HSPI are:
mosi, miso, sclk, cs
12, 12, 14, 15

There is considerable overlap between these pins, how can I have a JTAG debugger connected while using one (or both) of the SPI busses? I thought maybe the IO_MUX is meant to be used in these situations but wouldn't I just be rerouting the overlapping issue to another pin?

Any advice is greatly appreciated.

Unless you need the absolute maximum SPI speeds, you can use the GPIO matrix to route the SPI pins to any available/compatible GPIO pin.