Hi all, I already posted this to the Beaglebone group, but I noticed there's lots of traffic here about the Beaglebone Blue as well, so I'm cross posting in hopes of finding an answer.
I'm having trouble getting the compass heading to work correctly in DMP mode on my Beaglebone Blue. I'm running with the default roboticscape overlay. -- I calibrated the magnetometer and gyroscope as directed here: http://www.strawsondesign.com/#!manual-imu -- I ran the rc_test_imu program and confirmed that the magnetometer is working correctly. -- I ran rc_test_dmp -m -c -t. When I did this, I noticed that the raw compass was stuck near either 0, +180, or -180 degrees, jumping between those points as I rotated the Blue around the Z axis. When left still, the filtered compass always converged to the value of the raw. I also tested to make sure the pitch and roll angles were sane, and they were. I tried rotating it around the X and Y axes as well as using the -o option to switch the IMU orientation. This did not materially change the compass behavior. Trying it without the -m or -c switches produced no change in behavior. It behaves as if the magnetometer was simply not being turned on in DMP mode. I double-checked the source code of rc_test_dmp and recompiled it to see if the bug was there, and got the same results. Any suggestions for what I can try next? My application is such I can get away with processing the raw values to get a compass heading, but it would be nice to be able to use the sensor fusion. I filed a github issue as well. -- Pierce Nichols Principal Engineer Logos Electromechanical, LLC -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAENK0PyMQbyoCWfsHDoJHNNxYk%2B3sE4MCyK8Kb3dCb2CS%3DgOcQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
