How to Use SmartPort Telemetry Data Transmission on F745AIO

1. Wiring Method

Notice：

1. Please connect the S.Port signal wire to an available UART port for use; S.Port cannot share the same UART port with SBUS

2. Please use the regular S.Port output to connect to the flight controller, and do not use the 'non-inverted Smart.Port' signal to connect to the flight controller

2. Flight Controller Set-up

（1）As the cloud build feature has been updated for Betaflight 4.4.0 or above firmware,  you need to select the 'SmartPort' telemetry data transmission protocol in the process of flashing the firmware (it is not enabled by default under the default options)

（2）Enable SmartPort in the Telemetry Output options in the corresponding UART port (as shown in the wiring diagram, it's UART1), 

（3）Enable telemetry data transmission function on the Receiver page

After completing the above settings, you will be able to see the telemetry data transmission information from the flight controller on the remote controller.

If you still cannot use it, please enter the following commands in the CLI command line：

set tlm_inverted
set tlm_halfduplex

Please check if the settings match the diagram below