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BQ27542-G1: BQ Studio tool version 1.3.86 getting error while do data memory export. How to rectify .This is urgent !!!

PSG_4
Intellectual 610 points
Part Number: BQ27542-G1
Other Parts Discussed in Thread: BQSTUDIO, GPCCHEM

Hi 

I have finished successful learning cycle with BQ studio tool V 1.3.86  but facing issue while exporting data memory. 

While do export getting  error " Failed to execute runnable(org.eclipse.swt.SWTException:Widget is disposed ". Image attached for your reference .

Could you help me to rectify this issue on urgent basis ? If suggesting for install different tool version , then how to save all data for learning cycle which is running from last 30 hours .

Can we do create golden file without exporting/importing  data memory  ? 

Regards

PSG_4

,

  • 0
    Intellectual 610 points

    Hi,

    I am able to do  export and import data memory after enabling  "UNSEAL FULL ACCESS" in BQ studio  tool  and  then able create golden gg file . 

    Let me know my procedure is correct . Is there any  alternate method to solve data memory  exporting  issue with error   " Failed to execute runnable(org.eclipse.swt.SWTException:Widget is disposed "  ? 

    Regards

    PSG_4

  • 0 in reply to PSG_4
    TI__Guru** 104905 points

    Hello,

    No the gauge must be unsealed full access in order to pull all the data from DF.

    If it occurs with full access then you should update to the test version of bqStudio.

    All the information is saved in the gauge so if you update bqStudio the information will not be lost.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Intellectual 610 points

    Hi,

    I think there is a  confusion  in understanding.

    The DF export/import   is happened  after pressing button "UNSEAL FULL ACCESS" . After export /import , I am able to generate golden file also .

    Let me know this procedure  is okay or not .

    Regards

    PSG_4

  • 0 in reply to PSG_4
    TI__Guru** 104905 points

    Hello,

    I am not following your question/issue. The gauge must be unsealed full access to pull the data memory, you must send the UNSEAL command then the FULL ACCESS command, Then you can export the .gg or .srec. That's the only way you can pull the data.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Intellectual 610 points

    Hi , 

    Thanks for reply. 

    Once I flashed newly generated GG file in another board  , there is a mismatch in    "full charge capacity unfiltered" value  between  calibrated Fuel gauge board . 

    The  actual battery capacity value is 3000mAh  . After successful learning cycle in calibrated board ,  "full charge capacity unfiltered" value  shown in BQ studio  is 2938mAh at 0% battery (3.147V).  This is acceptable for us . 

    But  once   flashed golden file in another board , its   "full charge capacity unfiltered" value  is shown as 2258mAh at 27% ( 3.62V )

    Attached screen image for reference.  Is this create  any issue ? if yes,  how to rectify  ? 

     

    Regards

    PSG_4

  • 0 in reply to PSG_4
    TI__Guru** 104905 points

    Hello,

    If you only flash the .gg file, the chem ID you found using GPCCHEM will not be transferred to the gauge. You should export the .srec and upload it for a new gauge. Try exporting the .srec from a fully calibrated gauge with Chem ID uploaded and learning cycle completed and upload that to a know gauge.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Intellectual 610 points

    Hi , 

    I exported .srec  from a fully calibrated gauge with Chem ID uploaded and learning cycle completed  to another  BQ27542 board .Still there is a  there is a mismatch in    "full charge capacity unfiltered" value  between  calibrated Fuel gauge board . 

    During discharge cycle , it is noticed that there is %  deviation   between  "State of charge"  and  "State of charge unfiltered". 

    Could you please check   .srec file and .gg.csv file attached . 

    Regards

    PSG_4

    7115.Golden File 17122020.zip

  • 0 in reply to PSG_4
    TI__Guru** 104905 points

    Hello,

    The FCC will change depending on the conditions of the battery, discharge current, and temperature. SOC and SOC unfiltered will be different during discharge, there's a smoothing filter on the SOC value.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Intellectual 610 points

    Hi ,

    It is noticed that , once device kept for  shutdown , then SOC is keep on changing towards SOC unfiltered value . Same way Full charge capacity also changes towards  FCC unfiltered value . 

    Finally there is a difference  of approximate  25% difference in  SOC value before   shut down and after shutdown. The end user feels battery capacity jumped 25% while kept for shutdown. 

    Let me know how to prevent difference in SOC and SOC unfiltered  as wells FCC and FCC unfiltered during charge/discharge. 

    Regards

    PSG_4

  • 0 in reply to PSG_4
    TI__Guru** 104905 points

    Hello,

    The gauge uses a filter as stated before for the SOC, SOC unfiltered as no time constant so the SOC will converge to the SOC unfiltered.

    Is there a lot of quiscent current while it is in shutdown draining the battery? what was the time period of shutdown? Was the battery relaxed upon exit and entry from shutdown?

    There are many factors that can change SOC.

    Sincerely,

    Wyatt Keller

  • 0 in reply to Wyatt Keller
    Intellectual 610 points

    Hi,

    The quiscent current in shutdown is only 375uA (micro Amps) . Around 20% deviations can be seen for shutdown period  of  2 hours  . But  changes start within 5 minutes after shutdown .

    It is noticed that fuel gauge goes to sleep during shutdown and  exit from shutdown. 

    Regards

    PSG_4

  • 0 in reply to PSG_4
    TI__Guru** 104905 points

    Hello,

    I'm having trouble understanding the test you are performing. If the chem ID does not match you could have issues with the DOD being incorrect when the gauge does voltage correlation.

    Sincerely,

    Wyatt Keller