Compass = GOOD - No MAG data, unable to test mag_field inte

Log Analysis -- deprecated Copter Logs -- deprecated
1

Since day one (about year) when I carry out Auto Analysis of a dataflash file I get the following
Compass = GOOD - No MAG data, unable to test mag_field interference

System flies good in all flight modes I have seen other folks seeking the same lines but no explanation as to why we get this… is it because I have COMPASS_LEARN disabled? Is it a concern or simply because of a parameter set to null.

2

its because you don’t have mag enabled in the logs, so the auto analysis can’t check it.

3 
Are you referring to the drop down list under the LOG_BITMASK parameter as to what is being stored in dataflash log?  I don't see anything there for mag.  Or do I have to edit a line in the LogAnalyzer script?

Thanks for taking the time to my question,

Rej

4

Screen capture of LOG parameters, which one should I enable for mag data; currently have default or to check vibes I sometimes enable default + IMU

I could go trial each selection but if someone readily knows that would be great

5

Further reading led me to this… " Note that the COMPASS message is not enabled by default in the dataflash logs because it runs at 50hz and does affect CPU performance a bit ‘’ Was it an option at one time under Log Bitmask?

As of yet I am unable to find topic of how to enable dataflash recording of compass data… is it because we can not and have to rely sole on Tlog’s RAW_IMU xmag, ymag and zmag fields ( read info where some guys were doing the task with math and excel )