I have an application below that requires 2 MCUs to be on a PCB, along with a single FTDI header. Both are programmed thru their RX/TX UART pins.
In normal operation, the RX pin on MCU_1 is connected to TX pin on MCU_2, and vice versa, for inter-MCU communication.
To flash MCU_1, a DP3T switch is toggled to the left to route the MCU_1 TX/RX pins to the FTDI header.
To flash MCU_2, the switch is toggled to the right to route the MCU_2 TX/RX pins to the FTDI header.
I'm looking for such a configuration instead:
I'm guessing such a switch probably doesn't exist? How is it best then, using the least wiring/components as possible, to implement such a setup?