Unable to get MAVLINK 2 downlink in TBS crossfire nano in Matek H743mini

ArduCopter Copter 4.5
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1

Hi, I am trying to build a quad using TBS crossfire nano RX. I have binded this with micro-TX v2. In output of the Crossfire nano, I have set channel 3 and 4 as Mavlink RX and TX respectively which is connected to TX7 and RX7 (Serial 1) of FC respectively. channel 1 and 2 of receiver is connected to RX6 & TX6 (serial 7).
I have set SERIAL1_PROTOCOL = 2 and SERIAL1_BAUD = 115.
In radio controller side I selected the TBS Wi-Fi module and connected it to my mobile hotspot. and in this WIFI modules MAVLINK settings I tried with both UDP and TCP. I connected my laptop to tbs crossfire Wi-Fi module and in mission planner I tried to connect with both UDP and TCP by entering correct IP address and port no. But I could never receive the heartbeats.
I checked in my radio controller there in WIFI modules mavlink setting I am able to see UPLINK but in DOWNLINK it shows none.

Any help from the community is appreciated!.

2

So i just got this working, this only works if the MAVLINK2 is on USART1 and the RCIN is on UART7 /w BAUD is 115.

using serial 6 for RCIN stops it from working.

note the serial mapping.

  • SERIAL0 = console = USB
  • SERIAL1 = Telemetry1 = UART7 (support CTS and RTS signaling)
  • SERIAL2 = Telemetry2 = USART1
  • SERIAL3 = GPS1 = USART2
  • SERIAL4 = GPS2 = USART3
  • SERIAL5 = USER = UART8
  • SERIAL6 = USER = UART4
  • SERIAL7 = USER = UART6 (TX only unless BRD_ALT_CONFIG = 1, then RX available also)
3

TBS Crossfire micro-Tx does not support Mavlink stream.

4

Your 100% correct, i missed that fact. you do need the Full crossfire with Bluetooth.