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Intermittent error using TMDS2MTRPFCKIT with F28335 controlCARD and CCS4

David Taylor
Prodigy 200 points


When using the Multi-Axis Low-Voltage AC Motor kit TMDS2MTRPFCKIT with an F28335 controlCARD and CCS4, I encounter an intermittent problem. Sometimes, but not always, I get the following error when I attempt to begin a debug session: "C28xx: Error connecting to the target: Error 0x80000240/-151 Fatal Error during: Initialization, OCS". Once I receive this error, the only solution is to power down the kit and close CCS4 and, even then, often the same problem occurs on the very next attempt. Why would this error occur some of the time but not always, and is there a workaround?

  • 0
    Expert 1070 points

    I once had something similar to that when the noise level in the surrounding environment was high (switching power supplies). Or you might have a cable that is too long. I would try put some toroid beads on your emulator cable see if the problem may go away.

  • 0 in reply to Leong
    TI__Guru 57255 points

    David,

    I occasionally run into similar things as well.  All of what Leong has suggested are valid and have a good chance of reducing the issue. 

    Another thought may be to look at the connection within Device Manager (when CCS cannot connect) to see if xds100 entries get added correctly. Often I've found that turning off the power to the main board, unplugging the USB cable, waiting about 10 seconds, plugging back the USB cable, turning on the main board fixes, waiting 10 seconds and then trying to connect via CCS will fix my issue.  I think that Windows sometimes creates some issues if you try to connect too soon after plugging in the USB cable.

    Thanks,
    Brett

  • 0 in reply to Brett Larimore
    Expert 2355 points

    If the above methods dont prove fruitful I would suggest possibly trying an isolation adapter on your JTAG.  This should help reduce the affects of the nearby switching on your control path.  One suggestion is from Blackhawk http://www.blackhawkdsp.com/products/Isolation.aspx.

    Tim