PGN 65285 for Lowrance Temperature sensor doesn't support Temperature Source

[lfrancois]

So far the temperature source is always returning 0, I am going to start to document here the value the sensor is using based on the different values available in B&G Zeus 2 interface.

{ "Lowrance: Temperature", 65285, false, 8, 0,
  { { "Manufacturer Code", 11, RES_MANUFACTURER, false, "=140", "Lowrance" }
  , { "Reserved", 2, RES_NOTUSED, false, 0, "" }
  , { "Industry Code", 3, RES_LOOKUP, false, "=4", "Marine Industry" }
  , { "Temperature Instance", 4, 1, false, 0, "" }
  , { "Temperature Source", 4, 1, false, 0, "" }
  , { "Actual Temperature", BYTES(2), RES_TEMPERATURE, false, "K", "" }
  , { 0 }
  }
}

[lfrancois]

Water:

1969-12-31-16:00:34,206 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 0; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,206 0 005 255  65285 : 8c 80 00 a1 72 ff ff ff 9e

Outside:

1969-12-31-16:00:34,287 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 1; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,287 0 005 255  65285 : 8c 80 01 a1 72 ff ff ff 92

Inside:

1969-12-31-16:00:34,329 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 2; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,329 0 005 255  65285 : 8c 80 02 a1 72 ff ff ff b0

Engine Room:

1969-12-31-16:36:21,165 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 3; Temperature Source = 0; Actual Temperature = 22.30 C (72.1 F)
1969-12-31-16:36:21,165 0 005 255  65285 : 8c 80 03 69 73 ff ff ff 00
1969-12-31-16:37:30,297 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 3; Temperature Source = 0; Actual Temperature = 21.40 C (70.5 F)
1969-12-31-16:37:30,297 0 005 255  65285 : 8c 80 03 0f 73 ff ff ff 00
1969-12-31-16:00:33,824 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 3; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:33,824 0 005 255  65285 : 8c 80 03 a1 72 ff ff ff 00

Cabin:

1969-12-31-16:00:34,367 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 4; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,367 0 005 255  65285 : 8c 80 04 a1 72 ff ff ff 13

Live well:

1969-12-31-16:00:34,420 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 5; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,420 0 005 255  65285 : 8c 80 05 a1 72 ff ff ff 1c

Bait well:

1969-12-31-16:00:34,474 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 6; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,474 0 005 255  65285 : 8c 80 06 a1 72 ff ff ff 60

Refrigeration:

1969-12-31-16:00:34,572 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 7; Temperature Source = 0; Actual Temperature = 20.40 C (68.7 F)
1969-12-31-16:00:34,572 0 005 255  65285 : 8c 80 07 ab 72 ff ff ff ff

Heating system:

1969-12-31-16:00:34,611 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = 8; Temperature Source = 0; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,611 0 005 255  65285 : 8c 80 08 a1 72 ff ff ff e4

Unknown:

1969-12-31-16:00:34,646 0   5 255  65285 Lowrance: Temperature:  Manufacturer Code = Lowrance; Industry Code = Marine Industry; Temperature Instance = Unknown; Temperature Source = Unknown; Actual Temperature = 20.30 C (68.5 F)
1969-12-31-16:00:34,646 0 005 255  65285 : 8c 80 ff a1 72 ff ff ff ff

[lfrancois]

It looks like temperature instance and temperature source are inverted. Did a PR here: https://github.com/canboat/canboat/pull/95/files

[keesverruijt]

Nah, it looks as if there is no Temperature Instance in the Lowrance version, as setting the source to unknown makes 8 bits go 1 (3rd byte goes to 'ff'.)