Problem to read Acceleration Biases

By dan_leland , 11 July 2012
Forums
SmartMotion® MEMS Motion Sensors

Hi to all,

I need to get, for my application, calibrated values ​​of the acceleration.

Studying the MotioApps library, i saw that the function, that calculates the accelerations calibrated (and not only), is included in the file mlarray_lite.c.

Using the code of the demo teapot (with microsoft visual c + + 2010 Express), i was able,by simple printf, to obtain the quaternion and the Euler angles.

I would ask what features should I call in order to display the values ​​of the acceleration inside the teapot demo

Thanks

guy_mcilroy

13 years 8 months ago

For the motionFit SDK, you can transmit the accel values by modifying the MSP430 source code, or sending an "mfa" command over the bluetooth connection. The device will then include the values for accel. You can look at the functionality within the main.c file, for the MSP 430 motionapps project.

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dan_leland

13 years 8 months ago

I would like to know if there's a way similar to that proposed for the MPU-6050 Sensor Board for AVR UC3.
As software i use Atmel studio 6 and I opened the project "EMBEDDED_MOTIONAPPS-V2_0_2Rel-MPU6050-6axis-2012-05-02-1255".
In the main I have seen that the functions are invoked to calculate the various parameters such as acceleration, angular velocity and I would like to know if there is a way to obtain these values ​​to a file or displayed on the screen. (I got the Euler angles and quaternions using the teapot demo, but not the accelerations).

Thanks

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guy_mcilroy

13 years 8 months ago

For that version of the software you'll find various inv_get() functions within the ml_lite.h file. You should use inv_get_accel() in order to read the calibrated accel data.

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dan_leland

13 years 8 months ago

Now I can read the acceleration at a given time (by a breakpoint), but I would like to know if there is any way to get the acceleration from moment to moment stored in a file.

Thanks

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guy_mcilroy

13 years 8 months ago

You should be able to print and then log to file, according to your application requirements. We don't provide a logger for the UC3 project.

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