20220928 Dev Meeting

General:

• Update from relevant previous calls
• Tagged: issues, PR.

Notes

• MOTOR_INFO message #1895 - asset tracking?

  • Comments as per https://github.com/mavlink/mavlink/pull/1895#issuecomment-1260586122
  • In summary we want to solve this with as much known about the assets and info required discovered first.
  • The component metadata is our leaning, but might need work to support this.

• MAV_CMD_COMPONENT_ARM_DISARM - support for prearm #1896

  • Opposed due to risk of interfering with ARMing in general. Also in case of specific implementations that don't properly handle the int as float case.
  • James thinks this can be done with the existing approach.
  • I have explained what I can and suggested James and Thomas Rigi discuss offline: https://github.com/mavlink/mavlink/pull/1896#issuecomment-1260598202

• HIL message support for airflow sensor #1893

  • ArduPilot doesn't use them but not interested in more clutter
  • A little concern around efficiency of bigger messages.
  • Need to understand the pattern - but think it should go on the sensor.

• Support a return to default speed for DO_CHANGE_SPEED #1890 - All OK? Better way?

  • All say Aye
  • AO Hamish to merge.

• DISCUSS: MAV_FRAME_BODY_ to MAV_FRAME_MAV_ #1737 - BODY to UXV, LOCAL to HOME? Others?

  • There is no appetite to change these.
  • BODY and LOCAL are not seen as confusing/worth the churn - they are actually correct terms and well understood.
  • We'd consider other frames if there is a use case and implementation that needs them.

• MISSION_CHECKSUM - ArduPilot#20834

  • Update ArduPilot doesn't store all the values in mission so checksums won't match.
  • AO HamishW to discuss.

Follow ups - Note done.

• Extend MAV_CMD_NAV_VTOL_TAKEOFF #1875
  • Discussed options to tidy this
• Jump commands - can only be used in missions #1871
• Mission item - document values for autocontinue #1868
  • Brief discussion - not supported on ArduPilot. Supported on PX4 but not exposed in QGC.
• Yet another effort towards unified gimbal device messages
  • Julian - Needs to follow up with OllieW

Attendees: Hamish, JulianO, ThomasDb, JamesP