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BQ78350-R2-DEVICE-FW: SREC file Read/Write Problem

Ferman
Prodigy 50 points

Part Number: BQ78350-R2-DEVICE-FW

Hello,

We have designed a tool which is used to make mass production of batteries faster. It programs chips with .SREC file, then calibrates, and finally runs some test steps.(It is done by an MCU+GUI, not EV2400) 

The strange thing is when programmed SREC file is read again for validation, we noticed some part of data is changed. We repeated same procedure with BqStudio and EV2400, same thing has happened.

Can you please explain the cause of that? What BqStudio does for validation? What could be your recommendation for our tool to validate programmed chip?

Thanks in advance

  • 0
    TI__Guru* 81034 points

    Hi Ferman,

    Can you send me an example showing which part of the data has changed? There are some flash parameters that are updated by the device occasionally, so we can try to determine if it is one of these parameters. The calibration values are also stored in flash and will change after calibration.

    Regards,

    Matt

  • 0 in reply to Matt Sunna
    Prodigy 50 points

    Hi Matt,

    After reading your reply, to get rid of calibration and other parameter's data changes, we uncheck "execute after program" option while programming. In this way we could read exactly same written data.

    With our custom tool, we will execute program after data validation is done.

    Thanks for your support.

    Best regards.