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sparkfun / SparkFun_ICM-20948_ArduinoLibrary

Arduino support for ICM_20948 w/ portable C backbone
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What is the meaning of the accuracy value in the Quat9 example? #125

Closed joshgalvan closed 10 months ago

joshgalvan commented 1 year ago

Hello!

I'm unable to find anything in the documentation for what this accuracy represents. I've read the other open issue on accuracy, but it is more referring to the raw accel/gyro/mag accuracy, which should be 0-3. The 0-3 is fine and I understand that 3 means it's most accurate.

Here, though, @PaulZC says that the accuracy from the Quat9 example (data.Quat9.Data.Accuracy) is the compass accuracy, but what is the interpretation of this number? The number is uint16_t and for me floats around 300 or so.

Thanks.

PaulZC commented 10 months ago

Hi Joshua,

Apologies for the very slow reply. I missed this one...

The only information I have is: "The accuracy is expressed as 0~3. The lowest is 0 and 3 is the highest.".

Best wishes, Paul