what data should be written in X_OFFS_USRH, X_OFFS_USRL... Z_OFFS_USRL register?
Do they depend on the value of DLPF_FS register.
What I must do for offset calibration?
I use the IMU-3000.
When the sensor is stationary in the registers GYRO_XOUT_H, GYRO_XOUT_L,
GYRO_YOUT_H, GYRO_YOUT_L, GYRO_ZOUT_H, GYRO_ZOUT_L are some numbers, constant offset. To compensate for it, I write these numbers in the relevant registers X_OFFS_USRH and so on. But as a result of the offset is not removed.
The X_OFFS_USRH, X_OFFS_USRL... Z_OFFS_USRL registers are used to remove DC bias from the sensor outputs. In other words, these registers are used to calibrate the gyro. These values indicate how much the user needs to correct the zero rate outputs. The Initial ZRO Tolerance is ±20 º/s.
What values are you writing to the X_OFFS_USRH, X_OFFS_USRL... Z_OFFS_USRL registers ? How do you determine these values ?
I read GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L registers when the device does not move.
And write these values into X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL registers.
As a result, when I measure the new values, they differ little from those that were once in a register X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL was set to 0.
For example:
device does not move
read GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L
Gyro_X = 200
Gyro_Y = 300
Gyro_Z = 860
Write these values to X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL.
again read GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L
and
Gyro_X ~ 200
Gyro_Y ~ 300
Gyro_Z ~ 860
What Sensitivity Scale Factor of X_OFFS_USRH, _OFFS_USRL..Z_OFFS_USRL?
And how it depends on the Full-Scale Range?
The values you are writing are incorrect. You cannot write the GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L values into X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL registers.
For example, you measure 200 from GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L but the expected value is 220. You now write 20 to the X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL registers so that the measured and expected values are the same.
The Sensitivity Scale Factor will depend on the full scale range that you select.
Re: Re: data in X_OFFS_USRH
Please resubmit this post in English so we can assist you.
Re: Re: data in X_OFFS_USRH
what data should be written in X_OFFS_USRH, X_OFFS_USRL... Z_OFFS_USRL register?
Do they depend on the value of DLPF_FS register.
What I must do for offset calibration?
Re: Re: data in X_OFFS_USRH
Can you let us know the part number you are using and what code on the developers corner that you are referring to, so that we can help you further.
Re: Re: data in X_OFFS_USRH
I use the IMU-3000.
When the sensor is stationary in the registers GYRO_XOUT_H, GYRO_XOUT_L,
GYRO_YOUT_H, GYRO_YOUT_L, GYRO_ZOUT_H, GYRO_ZOUT_L are some numbers, constant offset. To compensate for it, I write these numbers in the relevant registers X_OFFS_USRH and so on. But as a result of the offset is not removed.
Re: Re: data in X_OFFS_USRH
The X_OFFS_USRH, X_OFFS_USRL... Z_OFFS_USRL registers are used to remove DC bias from the sensor outputs. In other words, these registers are used to calibrate the gyro. These values indicate how much the user needs to correct the zero rate outputs. The Initial ZRO Tolerance is ±20 º/s.
What values are you writing to the X_OFFS_USRH, X_OFFS_USRL... Z_OFFS_USRL registers ? How do you determine these values ?
Re: Re: data in X_OFFS_USRH
I read GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L registers when the device does not move.
And write these values into X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL registers.
As a result, when I measure the new values, they differ little from those that were once in a register X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL was set to 0.
For example:
device does not move
read GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L
Gyro_X = 200
Gyro_Y = 300
Gyro_Z = 860
Write these values to X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL.
again read GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L
and
Gyro_X ~ 200
Gyro_Y ~ 300
Gyro_Z ~ 860
What Sensitivity Scale Factor of X_OFFS_USRH, _OFFS_USRL..Z_OFFS_USRL?
And how it depends on the Full-Scale Range?
Re: Re: data in X_OFFS_USRH
The values you are writing are incorrect. You cannot write the GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L values into X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL registers.
For example, you measure 200 from GYRO_XOUT_H, GYRO_XOUT_L.... GYRO_ZOUT_L but the expected value is 220. You now write 20 to the X_OFFS_USRH, X_OFFS_USRL..Z_OFFS_USRL registers so that the measured and expected values are the same.
The Sensitivity Scale Factor will depend on the full scale range that you select.