Add support for PGN 127257 about nmea2000

[ttlappalainen]

Hi,

No Idea. Do I add it and try with NMEA Reader, what it shows?

Timo

28.6.2016, 13:49, Thomas Sarlandie kirjoitti:

It would be great to have support for PGN 127257 so we can transmit
and receive attitude messages (heel/pitch/roll).

It is documented in Canboat
https://github.com/canboat/canboat/blob/master/analyzer/pgn.h#L1573:

|{ "Attitude", 127257, true, 7, 0, { { "SID", BYTES(1), 1, false, 0, ""
} , { "Yaw", BYTES(2), RES_RADIANS, true, "rad", "" } , { "Pitch",
BYTES(2), RES_RADIANS, true, "rad", "" } , { "Roll", BYTES(2),
RES_RADIANS, true, "rad", "" } , { 0 } } } |

It would be good to know what is the reference framework too. I am
guessing Yaw is relative to true north. Not sure about pitch and roll.

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[sarfata]

That would be great. I think if someone could capture data from a sensor that sends them (I think some of the Airmar wind sensors send that information) that would be great too.

[ttlappalainen]

Hi,

Yaw could be also relative to your course over water. For aircrafts it
has been defined (at least on some referencies) angle between your
course over air.
pitch = positive, when your bow rises
roll = positive, when tilted right

28.6.2016, 13:49, Thomas Sarlandie kirjoitti:

It would be great to have support for PGN 127257 so we can transmit
and receive attitude messages (heel/pitch/roll).

It is documented in Canboat
https://github.com/canboat/canboat/blob/master/analyzer/pgn.h#L1573:

|{ "Attitude", 127257, true, 7, 0, { { "SID", BYTES(1), 1, false, 0, ""
} , { "Yaw", BYTES(2), RES_RADIANS, true, "rad", "" } , { "Pitch",
BYTES(2), RES_RADIANS, true, "rad", "" } , { "Roll", BYTES(2),
RES_RADIANS, true, "rad", "" } , { 0 } } } |

It would be good to know what is the reference framework too. I am
guessing Yaw is relative to true north. Not sure about pitch and roll.

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[ttlappalainen]

I just added attitude PGN 127257. I could only test it with NMEA Reader. It also showed Yaw as negative value, so it may be defined as I mentioned in similar ways as in aircrafts as an angle between vessel course over water.

[sarfata]

Thanks. I will try with my Raymarine i70 but I doubt it will be supported.