C28xx: Error: Error 0x80002020/-154 Fatal Error during: Execution, Control,

Hello,

Have you checked this thread http://e2e.ti.com/support/embedded/linux/f/354/t/55298.aspx ?

Best regards,

Maria

Hi,

I just had a look at it, I think the error is different. Actually the code can be loaded into dsp, and the whole circuit can work (mosfet switches). But after a few seconds, this error shows up. The program stops but the circuit still working(is this because the program has been loaded into the dsp?)

Thank you

Lebing 

Hi David,

Thank you for your reply. Yes, I'm using the non-isolated control card which is working with passive load. I think you give me a good suggestion:) Now I want to change to the isolated one. I have one more question, can I connect the isolated card with my previous DIMM100? I mean, do these two cards have the same configuration to DIMM100?

Thank you so much.

Lebing

Hi David,

Thank you for the information. If I understand right, I just need to connect a USB cable between computer and iso card, the emulator has already on iso card?

Regards,

Lebing

Hi David,

Sorry to bother you again. I did some tests on my non-isolated control card, and I'm quite confused now.

case 1: non-isolated control card + docking station bought from TI. I used a SVPWM program in which Ud and Uq were set to constant values(open loop). In this case, PWMs don't drive any switches. No error.

case 2: non-isolated control card + self-designed PCB board + three-phase RL load. Same code with case 1. After a couple seconds I got the error described above while the switches still keep working well.

case 3: non-isolated control card + self-designed PCB board + no load. Same code with case 1. I got the same error.

case 4: non-isolated control card + self-designed PCB board + three-phase RL load. In this case, I just used fixed duty cycle for all three phases and of course 120 phase shifted. No error!

You said electrical noise might be the reason for my case, I'm wondering if it is still the reason when I run the system without load? cause there is no current in this case.

And comparing case 2 and 4, seems like something wrong with my code. But in case 1, it works well.

I'm totally confused now, do you have any sugestions?

Thank you in advance.

Regards,

Lebing

Lebing,

You could have something wrong with your program.  I can't really know of course.  If the program crashed and the CPU ran off into the weeds, sometimes you can loose JTAG connectivity.  Based on your earlier post, I had assumed your program operating correctly and you just lost your JTAG connection.  That's why I suspected a noise issue with the JTAG USB.

For your case 3, when you say "no load" do you mean the power supply to your inverter bridge is turned off?  If so, then I'd agree it is not likely a noise issue.  There is no current flowing.

Sounds like you should debug your program before going down the isolated ControlCard path.

Good luck,

David

David,

For case 3, there is power supply to the inverter bridge, I just didn't connect the three phase load. Is there noise in this case?

If something wrong with the program, is it possible that there is no problem when I run the control card only with the docking station I bought? (case 1)

Lebing

Lebing,

If the load is missing, then I'd agree there is no current.  I suppose the inverter is still switching though.  But unlikely to be a noise issue with the JTAG.

The difference between the ControlCard/docking station and your PCB board is the power electronics (e.g., inverter bridge).  If the problem was hardware related, then yes the same code could be fine on the TI docking station but fail on your PCB.  The code itself should run the same on both of course.

I'm afraid I don't have any firm answers for you here.  I think you'll have to debug the program.  Start with your simple case #4 program, and add the pieces back in slowly until you find the failure point.

Regards,

David

Thank you so much.