HiTechnic compass - reading 65535?

[oddjob]

Is this how to use the HiTechnic compass?


HiTechnicCompass *m_compass;
float CompassAngle;

....

m_compass = new HiTechnicCompass(4); // slot 4

....

CompassAngle = m_compass->GetAngle();


The CompassAngle readings are always 65535.0. We checked the cable continuity from the I2C connector on the sidecar to the compass module and it seems ok. See anything wrong?

[EHaskins]

That looks correct. I looked at some of my compass test code, and I didn't have to do anything else. I wrote my compass code pre-season and I was using an older version of WPILib, so it may have changed since then.

Do you have another compass and cable to test with? Did you try your other DSC?

[byteit101]

do you know because of a printf?
we had a wierd output and it was because it was
printf("%i\n", floatvalue);
when it should have been
printf("%f\n", floatvalue);

[oddjob]

Thanks for the replies. We replaced the cable with another and the problem went away, so it was a bad cable. The code does work and the compass is working well.