Please check the correctness of the parameters RC_PROTOCOLS

ArduPlane Plane 4.1
1

Hello developers! Please check the correctness of the parameters in the description RC_PROTOCOLS.

I need to select the SBUS option, this value in the MP is displayed as the number 8 , but in the Complete parameter list this number is 3. Complete Parameter List — Plane documentation (ardupilot.org)
|Bitmask|
||Bit|Meaning|
| — | — |
|0|All|
|1|PPM|
|2|IBUS|
|3|SBUS|
|4|SBUS_NI|
|5|DSM|
|6|SUMD|
|7|SRXL|
|8|SRXL2|
|9|CRSF|
|10|ST24|
|11|FPORT|
|12|FPORT2|
|13|FastSBUS||

Please explain to me if I am mistaken about BITS

RC_PROTOCOLS
RC_PROTOCOLS1819×826 177 KB

2

It’s a bitmask. If you would have left it at default (all) it would work. Or just check SBUS as you have done.

3

SBUS works when the parameter is set to 8, but in MP it is a bit at 4 positions. I don’t understand how a bitmask translates numbers
Am I right?

calculator bits
calculator bits1601×971 49.5 KB

4

By example:
Fastbus is 10000000000000 (8192 decimal)
Sbus is 00000000001000 (8)
All is 00000000000001 (1)
PPM and SBUS is 00000000001010 (10)

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