mRes is wrong?

[yang614]

Hi,Kriswiner

The mRes = 10.*1229./4096. is 3 , the comment says // Conversion from 1229 microTesla full scale (4096) to 12.29 Gauss full scale //actually has no change because 1T=10^4G .

I read the datasheet ,I think the mRes should be 1229./4096. not 10.*1229./4096. or tell me where I have the misunderstanding.

[kriswiner]

The 10 converts microTesla to milliGauss, which I prefer.

-----Original Message-----
From: yang614 [mailto:notifications@github.com]
Sent: July 13, 2016 11:21 PM
To: kriswiner/MPU-9150
Subject: [kriswiner/MPU-9150] mRes is wrong? (#7)

Hi,Kriswiner

The mRes = 10.*1229./4096. is 3 , the comment says // Conversion from 1229
microTesla full scale (4096) to 12.29 Gauss full scale //actually has no
change .

I read the datasheet ,I think the mRes should be 1229./4096. not
10.*1229./4096. or tell me where I have the misunderstanding.

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[yang614]

Ok, I see .
and I have another question where is the " conform to expected bias input format" in calibrateMPU9150(float * dest1, float * dest2) ?? I cant find it in the datasheet.

[kriswiner]

Consult the data sheet.

-----Original Message-----
From: yang614 [mailto:notifications@github.com]
Sent: July 14, 2016 12:26 AM
To: kriswiner/MPU-9150
Cc: Kris Winer; Comment
Subject: Re: [kriswiner/MPU-9150] mRes is wrong? (#7)

Oh,I see
I have another question is why set the gyro & acc FS_SEL 0 and divide the
raw data by 4&8 instead of
setting to 3 directly?

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[kriswiner]

There should be some discussion of the bias registers in the data sheet. In
any case IIRC the data format is expected to be counts at 8 g full scale.

-----Original Message-----
From: yang614 [mailto:notifications@github.com]
Sent: July 14, 2016 12:49 AM
To: kriswiner/MPU-9150
Cc: Kris Winer; Comment
Subject: Re: [kriswiner/MPU-9150] mRes is wrong? (#7)

Ok, I see .
and I have another question where is the " conform to expected bias input
format" in calibrateMPU9150(float * dest1, float * dest2) ?? I cant find it
from the datasheet.

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