topic Re: KL46Z with FXS-9AXIS in Kinetis Microcontrollers

KL46Z with FXS-9AXIS

bertan7 — Sun, 13 Mar 2016 11:07:48 GMT

Hey i'm using the KL46Z working with KDS and already write some programs ( Hello World, LED blink, UART etc.) and it works well.

I need the FXS-9Axis for my new project now (Selfbalancing Robot) to get the Data from the Acc and Gyro on the 9Axis and calculate them to use the Kalmanfilter and adjust later with a PID controller.

My Problem:

I don't know how to use the i2c comunication to get output values from the Gyro or Acc, on my Term to see if it works

Thanks

Re: KL46Z with FXS-9AXIS

kerryzhou — Mon, 14 Mar 2016 08:55:57 GMT

Hi Bertan,

You need to find the I2C driver at first, actually, our FRDM-KL46 have the I2C code for reading the digital accelerometer, you can refer to it, then associate with the FXS-9AXIS datasheet to modify the code and read your FXS-9AXIS data ,.

The sample code download link:

http://cache.nxp.com/files/32bit/software/KL46_SC.exe?fpsp=1&WT_TYPE=Lab%20and%20Test%20Software&WT_VENDOR=FREESCALE&WT_…

Then, you can find the according code in folder: kinetis_kl46_sc\kinetis_kl46_sc_rev2\klxx-sc-baremetal\build\iar\FRDMKL46_Demo

Wish it helps you!

If you still have question, please contact with me!

Have a great day,
Jingjing

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Re: KL46Z with FXS-9AXIS

bertan7 — Fri, 18 Mar 2016 07:56:47 GMT

Hey Thank you for your answer,

but I can't find the code in the link for reading the accelerometer.

There is just a main.c file with: int main() and return(). in it

But I already have a demo called Bubble where I can send out the acc data

Now I need the code for reading the gyro on the 9-axis, to add it to the accelerometer data

Do I just have to change the PINs and addresses?

Re: KL46Z with FXS-9AXIS

kerryzhou — Fri, 18 Mar 2016 08:54:50 GMT

Hi Bertan,

Please see this picture:

That's the accelerator code.

About whether you need to change the PINS and address, it determined by your hardware, you should choose the according pin which your sensor are using, the address you should read your sensor's datasheet.

I don't have the 9-axis code directly, you need to write the code by yourself and refer to the accelerator code.

Wish it helps you!

Have a great day,
Jingjing

Re: KL46Z with FXS-9AXIS

bertan7 — Tue, 22 Mar 2016 13:10:16 GMT

Hey Thanks for your answer,

but i need something with i2c mastersendblock and masterreceiveblock in the code because of the processor expert component: I2C.

Are there any other example codes for ACC(FXOS8700CQ) or GYRO(FXAS21000) for the FRDM-FXS-9Axis that i can use?

Re: KL46Z with FXS-9AXIS

kerryzhou — Fri, 25 Mar 2016 02:47:15 GMT

Hi Bertan,

Please downloader the library for FRDM-FXS-9Axis:

NXP Sensor Fusion Library for Kinetis MCUs

After you install it, you can find the KL46 code for FRDM-FXS-9XIS in folder:FRDM-FXS-9AXIS\Codewarrior\FSFK_KL46Z

Wish it helps you!

Have a great day,
Jingjing

Re: KL46Z with FXS-9AXIS

bertan7 — Tue, 29 Mar 2016 08:25:51 GMT

Hey Thanks for your advice,

I installed the library and imported the FSFK_KL46Z in KDS but it does not work. I cannot debug it

It can not find the Cpu.h

The coonsole says: FSFK_KL25.elf: cannot execute binary file: error in the format of the program file

Would be great if you can help me

Thank you

Re: KL46Z with FXS-9AXIS

kerryzhou — Wed, 30 Mar 2016 06:29:44 GMT

Hi Bertan,

The KL46 sample code is the Codewarrior project, so you can't use the KDS to open it directly.

When you import it, did you refer to the KDS import document in the path:C:\Freescale\KDS_3.0.0\doc KDS_Porting_Guide?

Besides, I use the Codewarrior 10.6 to open the KL46project, and complier it, it has no error.

So, you can download an CW to open it, then refer to the codewarrior configuration to configure your KDS again.

Wish it helps you!

Have a great day,

Jingjing