- TX2: XBee UART TX (this pin is also connected to ZED-F9P UART2 RX).
- RX2: XBee UART RX (this pin is also connected to ZED-F9P UART2 TX).
Which is it? Are these pins connected to UART2 or are they connected to the XBee socket?
On the v3 board I had assumed that TX2 and RX2 were hardwired to UART2 and that the switch under the XBee socket merely controlled which UART the XBee was connected to.
I was disappointed to discover that the switch also controlled which UART RX2 and TX2 were connected to so that if it was switched to UART1 then TX2/RX2 were likewise connected to UART1 and UART2 was not accessible at all.
I am now thinking of ordering a v4/Pro board. Does it work the same way, or is UART2 now available on the rails when the XBee socket is switched to UART1?
You can only either / or. You can’t have access at the same time to the XBee UART and to the UART2 of the GPS. WIth the PRO boards is the same limitation.
Unfortunately the Pro board’s switch is for basic users who simply want to use UART1 on the XBee socket and nothing else.
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