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MSP432 Overheating

Becky Selle
Prodigy 35 points

Hi, 

I am working with the MSP432 and one of the ADC examples from the driverlib. The microcontroller started running fine for a while, then sporadically overheating and I get this error in CCS:

CORTEX_M4_0: JTAG Communication Error: (Error -261 @ 0x0) Invalid response was received from the XDS110. (Emulation package 6.0.14.5)
CORTEX_M4_0: Failed to remove the debug state from the target before disconnecting. There may still be breakpoint op-codes embedded in program memory. It is recommended that you reset the emulator before you connect and reload your program before you continue debugging.

There's nothing much to the circuit- a ~1.1V signal into an analog input and ground into ground. The signal is generated from three double A batteries passing through a voltage divider. The same setup has been used on an MSP430 for over a year with no issue, so I don't think it has anything to do with that.

If I unplug the device, let it cool, then try again it usually works for a while then happens again. Any advice?

Thanks,

Becky

  • 0
    TI__Expert 3295 points
    Becky,

    Can you go into more detail about which part on the MSP432 Launchpad is overheating during this process?

    Thanks,
    Michael Arriete
  • 0 in reply to Michael Arriete56
    Prodigy 35 points

    Hey Michael,

    The MSP432 chip and the small black chip in the corner right by the USB port get hot, then it spreads to the rest of the board. I've also tried multiple USB cables.

    Regarding my other post with ADC noise, perhaps it is a related issue? I am getting very variant noise with ADC readings. When I read an input generated from the microcontroller (pass the 3.3V output through two resistors and measure the voltage between them), I usually get expected noise, ~4 ADC units. However, I randomly will get noise from 20-100 units. This problem persists even when I wrap the unit in a blanket to protect against EMI and I ensure there is no cell phone use nearby. When I read an input generated from an outside source (a AA battery), the noise tends to be much bigger. At best, it drops to ~8 ADC units. It experiences the random greater noise more frequently. 

    Thanks!

    Becky

  • 0 in reply to Becky Selle
    TI__Expert 3295 points
    Becky,

    Those two chips overheating is known especially when you have damaged the ESD structure on an I/O pin on an MSP432. This isn't the first claim that an ADC example has caused this sort of issue, so if you could help us out by narrowing down which ADC examples you used that could be the culprit it would really expedite our testing process.

    I would also ask that you try a simple test to see if we are correct in our assumption. Try to download a simple CCS project that sets all I/O pins to low output and use a jumper wire to the LED to see if any of them are still high and drawing current and just let us know if this is the case.

    After tests have been performed on your end we would like to get your launchpad replaced so that you may continue to work with a functioning device. I apologize for having to deal with this inconvenience.

    Best regards,
    Michael Arriete
  • Former Member
    0 Former Member in reply to Michael Arriete56
    Hi Becky,

    If you can contact me in a private message with your information I will work with you to get you a replacement to your MSP432 LaunchPad.

    Josh
  • Former Member
    0 Former Member
    Hi Becky,

    I am going to close this topic as there has been no response in over a week. If you have further questions or need assistance please feel free to contact me directly with a private message! Thank you!
  • 0 in reply to Former Member
    Intellectual 270 points
    Hi Josh,

    I've been facing similar problems where the IC101 on my MSP432 launchpad gets really hot and so does the XMS432 chip. I've been working with the ADC14 and I noticed these heating issues. I performed the test suggested above by Michael, but could not find a pin that was still drawing current while low. What would you suggest in this case?

    Thanks,
    Bhoomi
  • 0 in reply to Bhoomi Patel
    Guru 74080 points

    Hi Bhoomi,

    There were made some investigations on a possible cause for the overheating issue here:

    Dennis

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