"Going for waypoint zero" at end of auto mission

[squilter]

Happens every time. Here's a video of it happening.

Does WP 0 have some hidden meaning (like "mission complete").

[ghost]

I sometimes also happens when arming

[squilter]

@ThorstenDP Hasn't happened to me when arming. Do you mean arming in auto or arming in any mode?

[ghost]

@squilter to be honest I am not sure in which mode. But normally I takeoff in Stabilize. And it happened a few time at the very beginning. I will keep an eye on it. It never caused any troubles so I forgot to report. But when I saw your Issue I remembered. Should it happen again I'll let you know.

[arthurbenemann]

Here is the related code from ArduPilot:

static void NOINLINE send_current_waypoint(mavlink_channel_t chan)
{
    mavlink_msg_mission_current_send(chan, mission.get_current_nav_index());
}

    /// get_current_nav_index - returns the current "navigation" command index
    /// Note that this will return 0 if there is no command. This is
    /// used in MAVLink reporting of the mission command
    uint16_t get_current_nav_index() const { 
        return _nav_cmd.index==AP_MISSION_CMD_INDEX_NONE?0:_nav_cmd.index; }

[ghost]

I notice this also. Always at the end of a normal (not auto missing). Perhaps it happens when I switch my TX off while my Quad is stil powered. Probably the mode off the APM changes by switching off the TX and lowering the PWM of the modechange channel.

[m4gr3d]

Fixed by PR #1489