This is a two part question:
1. How or where in the documentation does the internal VREF get routed over to the ADC or is this intended to drive a sensor only?
I was hoping to use the VREF as a voltage reference to the ADC, but not clear to me that it is possible.
2. If VREF can be used by the ADC, then how does one deal with UART0_RX at PTB2? Can it be re-routed somehow? But from what I understand the bootloader will try to use UART0 with TX/RX at PTB1 and PTB2, respectively.
Can someone explain this?