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CCS/RM46L852: Error in communication with RM46 (it worked fine before)

Nemanja Tomovic
Prodigy 170 points
Part Number: RM46L852

Tool/software: Code Composer Studio

Hello,


I've bought RM46 controller a year ago and since then I've been working with it and I had no problems.


After sitting in a box for few days, I've tried flashing a new code, and hence I got the error:

Error connecting to the target:
(Error -260 @ 0x0)
An attempt to connect to the XDS110 failed.
The cause may be one or more of: no XDS110 is connected, invalid
firmware update, invalid XDS110 serial number, or faulty USB
cable. The firmware and serial number may be updated using the
xdsdfu utility found in the .../ccs_base/common/uscif/xds110
directory of your installation. View the ReadMe.txt file there
for instructions.
(Emulation package 8.0.903.6)

Since it was working fine, I know that the problem cannot be in XDS110 connection.


The first thing I've tried was flashing a code from an older laptop which had an already established communication with this controller. It was not working. Then, I've tried connecting it on my colleague's computer who works with the same controller, but it had no effect. This led me to conclusion that it was not a computer problem.

I've tried opening launch configuration file to try and test the connection:

The next logical response I've had was to check the board itself. This is where I am left astonished and not sure what to do.

All jumpers are in place. 5V LED is on. This means that there is nothing wrong with USB cable, USB input or communication.

The board does not respond to reset button at all.

There is a code already flashed from previous interaction with the controller. Reset button should make the LED (I think ERR) flicker a bit. This does not happen.

Can you tell me what is the problem and how to fix it?

Thanks!

  • 0
    TI__Guru**** 168297 points
    Hi,

    An explanation for Error 260 can be found at the following reference (simply search for the error code):
    dev.ti.com/.../

    The page above contains several troubleshooting tips that will certainly help you further debug this scenario.

    Hope this helps,
    Rafael
  • 0 in reply to desouza
    Prodigy 170 points
    Rafael,

    Thank you for the answer!

    I've been trying to work around the problem but to no avail.

    I have just one additional question, is it normal for controller to 'buzz' when plugged in to a power supply with this type of error?
  • 0 in reply to Nemanja Tomovic
    TI__Guru**** 168297 points
    Hi,

    Uh-oh... "Buzz" is usually a bad thing, especially because this board does not have any switching regulators.

    Can you double-check if there are no ground loops between your board and your host PC? Or check if there is a test equipment or daughter card connected to the target board that could be causing this ground loop? This can be checked with a DMM between the GND plane of the board and any metallic contact in the host PC.

    If nothing is applicable to your scenario, I would start to suspect the board itself is broken - that or some sort of short circuit caused by metallic dust may be causing this. I would thoroughly inspect it under a stereo microscope.

    Hope this helps,
    Rafael