Can't get motor to go CCW

David,

I've seen this a couple different times.  Can you confirm which version of the compiler you are using.

In CCS click: Help -> About Code Composer Studio -> Installation Details

Look for the line with the name C2800 Compiler Tools, it should be at least 6.2.3.  

There is an issue with the 6.2.0 - 6.2.2 compilers where they do no handle fixed point math correctly.  I've see where they only allow the motor to spin in one direction.

The other thing to look at is the bandwidth that you have set for the SpinTAC controller.  In the user.h file that you attached the bandwidth is set to 1.0.  This is a really low bandwidth.  Have you tried increasing it?

Adam,

Thanks for the quick reply. The 2800 compiler I have is:

 C2800 Compiler Tools    6.2.0      com.ti.cgt.c2000.6.2.win32.feature.group             Texas Instruments

Could you tell me how to update this? and....No I have not tried to change the bandwidth, Which I will do as soon as I up date the compiler.

Much Thanks,

David

David,

You need to click: Help -> Check for Updates.  It should step you through the process.

Ok, found the SMD capacitor.

Updated software, C2800 Compiler Tools     6.2.6

Still have same problem, won't go CCW.

Changed bandwidth, per suggestion,to 3 just to up it a little. I don't know if that is enough on not enough.

Oddly, enough TI has worked with the user.h file, which when returned I saved as a "gold" file.

Been trying to get this motor to reverse for months now, any suggestions welcome.

Thanks,

David

David,

Make sure you clean and rebuild the project.  CCS might not have detected there was a change and could still be using the code that was compiled using the old compiler.

Adam,

Thanks for the reply, this has been beating me up for some time. Think I will try that in the morning.

I hope you are not offended by my doing so.

Is there a chance we could have a board problem that would cause this?

Later,

David

David,

This is a compiler issue. There is a sticky on this topic right on the first page. 

I am working with Motion Sequence Example Lab 6b.

I have gone through the labs to this point several times. I have a "gold" copy of user.h for motion looked over by TI engineers.

And I still can't get this motor to go CCW in the labs. It just sits there when It should go CCW, but does go CW.

My compiler says TI V6.2.6

Family C2000                     Generic C28xx Device

Much Thanks,

David

David,

Were you able to clean and build the project?

It is possible the CCS is not using the newest compiler.  To check this, right click on the project and select properties.  Select General.  On the screen should be either a Compiler Version or an Effective Compiler Version.  Which version is listed under those?

Thanks Adam,

Yes, I did the Clean and build project. No change.

I did the right click on properties and that is where I got under "General" Ver. 6.2.6.

It is listed as Compiler Version.

David

Adam,

While you are still around, I want to change states, ex. State A to B, Which file is that located in?

I did find it once but I am having trouble locating it today. Search only lets me look in my open files and since it is now working I am a little skitish about doing to much to fast.

It is going CW and CCW now. Now these labs are going to mean something. :)  Wow......long time coming.

Thanks to all the TI eng. who helped me.

David

Oh, yeh, while I am asking questions. Where would I find information on the GUI and FLASHING this to the micro so my program would stay there after power loss.?

Lots of stuff I have not been able to look up because I couldn't get it to go CCW..   WHeeeeeeeee!!!!!

We're going to have fun now........

David