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BQ76952: BQ76952 why the data captured by the EV2400 write register using a logic analyzer is different from the routine?

Star Xu
Genius 9645 points
Part Number: BQ76952
Other Parts Discussed in Thread: BQSTUDIO

Hi 

The customer design with BQ76952, This is the host computer captured by the logic analyzer. The data written in PowerConfig register 2D80 is such a long list, which is completely inconsistent with the routine.

This is the data captured by the  logic analyzer, when writing VCELL_MODE with BQStudio. 

What is the reason?

Please help check it.

Thanks

Star

  • 0
    TI__Mastermind 25980 points

    Hi Star,

    I recommend reading the BQ769x2 Software Development Guide for some examples of communicating with the device.

    Could you provide more details about these captures? Specifically what commands the host is trying to send in each capture. Also, it looks like the last capture is zoomed out too much so that the bytes are not fully displayed.

    One thing to note is that bqStudio will normally handle entering and exiting config update mode and sending the checksum when writing to registers. It may appear different due to this.

    Regards,

    Max Verboncoeur