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CC3220S-LAUNCHXL: Device hangs on site

Alteem Instruments
Prodigy 250 points
Part Number: CC3220S-LAUNCHXL

Hi Everyone,

We have developed an device which measures RPM and production count for LOOMS Machines, while testing in our lab it works fine,(tested continuous working 4 Days & Night). Nut after installing same device on site(at manufacturing unit having 100s of LOOMS Machines) , it hangs after few hours (nearly 14 Hours ). we have not changed any hardware or program for Both device and server. Also network is available all the time.

  • 0
    Guru 79905 points
    Hi,

    Do you use CC3220S-LAUNCHXL inside your device? Or do you use your hardware based on CC3220 QFN or MOD?

    At first step you need to figure out is its hardware (hardware "freeze") or software issue (e.g. hard fault). After that you can move on. Few tips:
    - do you have enabled watchdog?
    - did you tested EMC of your device at particular use case? I think at Loom machine are big drives which can cause EM interferences.

    Jan
  • 0 in reply to Jan D
    Prodigy 250 points

    Yes we use CC3220S- LAUNCH EXCEL Kit in our deviece, your right there is EM interference, which  was giving false interrupt earlier, then we put filter circuit for interrupt and it works fine. No it is working and problem is as stated in question. we are using 5V smps, also used slandered USB Charger for supply. still issue remains same, we have only single interrupt interface with inductive proximity sensor (with filter to remove EM noise). there is no interface with any GPIO.

  • 0 in reply to Alteem Instruments
    Guru 79905 points

    Hi,

    CC3220 LaunchPad is supposed to be used for evaluation/development purpose only. That means this board it was not tested for usage at industry environment. It may be possible that conducted or radiated EMI is causing your problems. This depends on your application. Who knows. Did you tested your device for a EMC (at least immunity tests)?

    At first step you need to determine that issues are caused by hardware or by software. With issues with your software may to help enabled watchdog. One of reason of hardware issues can be a EMC problems. This can be determined by measurements with spectrum analyser on the site.

    Jan

  • 0 in reply to Jan D
    Prodigy 250 points
    Thank you for answer,

    We have not done any EMC test , that may be an issue wea re already working on that how to resolve and proceed further. As part of software its not and issue as it work for few days (over night) withought any issue or error. We have not used watchdog.
  • 0 in reply to Alteem Instruments
    Guru 79905 points
    Hi,

    Usage device without enabled Watch dog is a very bad practice. I think that you can have still a software related issue. This issue may to be show only at some conditions on end site (depending on WLAN used, etc.). You should focus to potential software issue at first step. Because this could be easily fixable. EMC issue could be much worse to fix.

    Jan
  • 0 in reply to Jan D
    Prodigy 250 points
    Hi,

    Sorry , Its my mistake I have rechecked and there is watchdog timer used having reload value of 1 second. Actually, we have used HTTP get example and modified it for pour application in that it was found watchdog enabled. still I will look for any error in my software, meanwhile whatever you can guide to solve issue is important to us.
  • 0 in reply to Alteem Instruments
    Guru 79905 points
    Hi,

    Enable watchdog may to solve many software related issues but not all. Let's suppose you not have software related issue. In this case EM is one of things which you should check. But it is hard to give you any advice.

    I have no experience with loom machines. But I suppose that drive inverters are there used. Inverters produces huge EM interferences especially when cables from inverter to drive are not properly shielded.

    Jan
  • 0 in reply to Jan D
    Prodigy 250 points
    Hi, thanks for your suggestions, we are thinking to try few more options like filters in power supply section, battery based supply, etc. Also we are considering EMI/EMC interference issue as major cause and will take action regarding it.

    Its pleasure to have conversation with you. still if you have any further suggestion please share with us.
  • 0 in reply to Alteem Instruments
    Prodigy 250 points
    We have came to an issue, No, issue of EMI/EMC, Found issue with file system for data handling is causing it. we are working on it. Withought File system Device worked for more than 3 days and still working.
  • 0 in reply to Alteem Instruments
    Guru 79905 points
    Hi,

    Glad to hear that you was able to resolve the issue. I am just a curious, what exact reason of issue with filesystem did you had?

    Jan