TX and RX inverted Ardusimple F9p UART

I recently bought 2 Ardusimple modules, and after weeks of trying to get RTK without success, I decided to invert the TX and RX connections of the base and rover, and it worked!

but is this correct? because it is the opposite proposed by the documentation and the logic of UART ports

below my configuration , wiring and video:
https://youtu.be/31XM6Oo_KVM

the documentation shows this




Processando: VID_20220318_121228.mp4…

Good info including wiring and setup available for Benjamin’s Dual GPS V1.4 board

Benjamin’s Dual GPS PCB v1.4
Forum thread
Oshwlab.com link

Ken

  • TX1: ZED-F9P UART1 TX
  • RX1: ZED-F9P UART1 RX
  • 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).
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