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RCInput:Add Support for RX-TX SWAP using onewire

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A board can optionaly define RC_SERIAL_SWAP_USING_SINGLEWIRE
   If the board is wired board with TX to the input (Swapped) and
   the SoC does not support U[S]ART level RX-TX swapping to allow
   useing onewire to do the swap if and only if:

     RC_SERIAL_SWAP_USING_SINGLEWIRE   is defined
     RC_SERIAL_SWAP_RXTX               is defined
     TIOCSSWAP                         is defined and retuns !OK
     TIOCSSINGLEWIRE                   is defined
This commit is contained in:
David Sidrane
2024-01-16 17:09:26 -05:00
committed by Daniel Agar
parent ab969c71fc
commit b556d668f8
3 changed files with 34 additions and 0 deletions
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platforms/common/include/px4_platform_common/board_common.h
+9
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@@ -458,6 +458,15 @@ static inline bool board_rc_singlewire(const char *device) { return false; }
* A board may define RC_SERIAL_SWAP_RXTX, so that RC_SERIAL_PORT is configured
* as UART with RX/TX swapped.
*
* It can optionaly define RC_SERIAL_SWAP_USING_SINGLEWIRE If the board is wired
* with TX to the input (Swapped) and the SoC does not support U[S]ART level
* HW swapping, then use onewire to do the swap if and only if:
*
* RC_SERIAL_SWAP_USING_SINGLEWIRE is defined
* RC_SERIAL_SWAP_RXTX is defined
* TIOCSSWAP is defined and retuns !OK
* TIOCSSINGLEWIRE is defined
*
* Input Parameters:
* device: serial device, e.g. "/dev/ttyS0"
*