Thanks for your interest in the Intel Quark Microcontroller Platform.
This is an interesting question! Reading through the datasheet (http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/quark-d2000-datasheet.pdf ) in Section 3.3, it states that using the Quark in user mode should let you configure individually each pin in the 4 user modes.
Now I can't guarantee that this will work, since you are changing interfaces, you will have to test it to see if it works.
Hope you find this information useful, have a nice day!
Thanks Jose. I'll give it a try!
When I'm done with the debugger, would it be appropriate to show off the cool stuff we're building with Quark here--or is this more of a forum for "questions about the processor only"?
I'll also try to report back as to whether or not I was successful using the /TRST pin as a TX-only UART without disabling JTAG. We're specifically trying to use the pin that way to redirect printf output (so that we can use the USB port for both JTAG debug and "printf output" debug). I'm hoping that this is specifically what the processor designers had in mind when they put UARTB_TX on the optional JTAG reset pin.
This will be a fun project.