MSP2 Message Problem

[willishf]

In the process of implementing java based control software that would run on google coral/jetson nano/pi attached to drone and send MSP commands to FC for autonomous flight. Had no problem implementing code for function id < 255 for the V1 messages.

Was testing MSPV2_INAV_ANALOG and do not get a response back from FC.

I have verified that I am generating the correct byte array for the message, in particular the checksum. Used the "Hello World" message at https://github.com/iNavFlight/inav/wiki/MSP-V2 to verify correctness.

For MSPV2_INAV_ANALOG would send the following.
bytearray($X<\x00\x02\x20\x00\x00\xB8)

Thought it might require longer time for response if sampling X number of analog ports but that doesn't seem to be the issue.

Then tested a couple other V2 commands and no response.

Assuming I should be requesting data as the master.

Am I missing anything obvious?

Running V6 and INAV Config works as expected.

[stronnag]

You have a fault in your code. MSPv2 works fine for compliant implementations.

[DzikuVx]

I confirm that MSPv2 is working like expected

[stronnag]

As can numerous public examples, inter alia:

• mwptools
• bbl2kml
• inav-follow-me
• impload
• msp-set-rx
• msp-rs
• msp-go
• INAV Configurator

[willishf]

Thanks for checking. Wanted to mainly make sure I wasn't missing something obvious. Same function call to send < 255 functions but build v2 byte array in another method. Stumped as to why it isn't responding. Get back 0 bytes for the read.

…

On Tue, Apr 11, 2023, 3:53 PM Jonathan Hudson ***@***.***> wrote: As can numerous public examples, inter alia: - mwptools <https://github.com/stronnag/mwptools> - bbl2kml <https://github.com/stronnag/bbl2kml> - inav-follow-me <https://github.com/stronnag/inav-follow-me> - impload <https://github.com/stronnag/impload> - msp-set-rx <https://github.com/stronnag/msp_set_rx> - msp-rs <https://github.com/stronnag/msp-rs> - msp-go <https://github.com/stronnag/msp-go> - INAV Configurator <https://github.com/iNavFlight/inav-configurator> — Reply to this email directly, view it on GitHub <#8971 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA653HQDYCIGWQL6RMZLZNLXAWZDLANCNFSM6AAAAAAW2SUTOY> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[netIOTil]

did you mange to a get response?

[sensei-hacker]

If you sniff the serial port to compare what you are sending vs what Configurator sends, that will generally show exactly what the problem is.

[willishf]

Don't recall. No longer working on that project.

…

On Thu, Dec 5, 2024, 4:32 AM netIOTil ***@***.***> wrote: did you mange to a get response? — Reply to this email directly, view it on GitHub <#8971 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA653HWVM3QZLJXY6WD3TMD2EAMSNAVCNFSM6AAAAABTCASV56VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTCNBXGA4DSOI> . You are receiving this because you authored the thread.Message ID: ***@***.***>