On board Flight logs for post flight anatysis COPTER-4.0.3

ArduCopter Copter 4.0
1

HI Guys,

I noticed in Copter-4.0.3 there is logging onboard. Specifically I am interested in this chunk of code:

// Write a Guided mode target
void Copter::Log_Write_GuidedTarget(uint8_t target_type, const Vector3f& pos_target, const Vector3f& vel_target)
{
struct log_GuidedTarget pkt = {
LOG_PACKET_HEADER_INIT(LOG_GUIDEDTARGET_MSG),
time_us : AP_HAL::micros64(),
type : target_type,
pos_target_x : pos_target.x,
pos_target_y : pos_target.y,
pos_target_z : pos_target.z,
vel_target_x : vel_target.x,
vel_target_y : vel_target.y,
vel_target_z : vel_target.z
};
logger.WriteBlock(&pkt, sizeof(pkt));
}

Where can I find this information post flight for analysis and check the data ie. the above specific fields that were set.

2

Check the GUID name inside the log file. Although apparent from the source code, the field definition are also given in here..

If you search LOG_GUIDEDTARGET_MSG inside the ardupilot source code you will find the log field name and their unit in here.

3

Thanks, and is this just in the onboard dataflash log file? Or what specifically file does this get written to onboard?

4

I noticed in Copter-4.0.3 there is logging onboard. Specifically I am interested in this chunk of code:

void Copter::Log_Write_GuidedTarget(uint8_t target_type, const Vector3f& pos_target, const Vector3f& vel_target)

https://ardupilot.org/copter/docs/logmessages.html#guid-guided-mode-target-information

Where can I find this information post flight for analysis and check the data ie. the above specific fields that were set.

https://ardupilot.org/copter/docs/common-downloading-and-analyzing-data-logs-in-mission-planner.html

5

once you have the .bin file use plot.ardupilot.org to analize it.