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add/review serial port mapping for all boards #417
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*From a HW perspective USART6 could be used as a third telem port with HW handshaking OR for Serial based RC protocols (SBUS,SUMD...). In the case as built for pixhawk 4 Hardware the RX, RTS and CTS are not connected. The TX is used as an RX in Single wire mode. This is to enable support for SBUS2 which is not supported as of this writing in FW. When the PX4IO is not present the FMU (F7) manages the RC and Safety features. When the PX4IO is present the FMU initializes this pins to benign states. Fail over was envisioned but not implemented. |
Don't forget this one gentlemen |
@dagar did this make it somewhere? |
PX4/PX4-Autopilot#11044
Until recently PX4/Firmware carried simple serial port mapping documentation in the init scripts. https://github.com/PX4/Firmware/blob/82aa24adfca29321cfd1209e287eab6c2b16780e/ROMFS/px4fmu_common/init.d/rcS#L16-L40
After the board reorganization it was decided this should exist only in the official user guide documentation.
Let's go through each currently supported board and make sure equivalent serial port mapping exists in the user guide.
https://docs.px4.io/en/flight_controller/
etc
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