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BQ27410 EVM not discovered

Ryan May
Genius 13700 points
Other Parts Discussed in Thread: EV2400, BQEVSW

I am currently working with the BQ27410 EVM trying to interface with a PC. The software was obtained from the following links after a bit of searching:

http://www.ti.com/litv/zip/sluc246a

And the driver for the EV2400

http://www.ti.com/litv/zip/sluc291

The issue is tha even with these components installed it does not show the bq27410 as an option and it appears to be looking for the EV2300 drivers instead of the installed EV2400.

With the EV2400 driver installed it enumerates on the computer correctly and there is activity on the SCL and SDA line but there is no device discovery..

Even after following the suggestoin in the readme.txt file of disconnecting and reconnecting the battery to try to bring it out of sleep mode it does nothing.

 

I appreciate any help that you provide.

 

Ryan May

  • 0
    TI__Genius 14985 points

    Hi Ryan,

    Please post any screenshots showing each step and dialog box of trying to run EVSW and we'll see if we can figure it out.

  • 0 in reply to dMax
    Prodigy 50 points

    I am attempting to interface the ev2300 with the bq27410 eval.

    Do I use I2C or SMB?

    I cannot find the CURRENT eval software for bq27410.  What is its name and where can I get it?

    I also cannot find the initial download file for the bq27410.

    If you are going to offer a specific ssolution for the evaluation of bq27410, then why is this BASIC info not on your bq27410 product folder?

    I am finding many links that are not working as well.

    Thanks, Steve

  • 0 in reply to dMax
    TI__Expert 4115 points

    Hello Ryan,

    I would suggest uninstalling the drivers for the EV2400 when using the bq27410.  For most, if not all the hand held gauges (i.e. bq27xxx) you should be fine without installing drivers for the EV2400.  The EV2300 could be a different story.

    As David mentioned, screen shots will be helpful, but if you can also sniff the I2C bus that would be beneficial as well.  This will helpus to see how the gauge may or may not be responding.  Whether the gauge is in SLEEP mode or not should not be an issue.  So, I believe this issue to be on the PC->EV2x00 side more than the EV2x00 -> gauge side. 

  • 0 in reply to Steve Carmel
    TI__Expert 4115 points

    Hello Steve,

    The data sheet (http://www.ti.com/litv/pdf/slusaf4) talks about how this is a device that uses I2C communication.  In fact, all hand held (or single cell) gauges are I2C devices (i.e. bq27xxx).  Some have 1 wire communication capability as well.  You can find all the software for the bq27410 in the product folder (www.ti.com/product/bq27410-g1) or by searching for the device on www.ti.com.  I have also listed links to information below, all which I have tested and appear to work successfully.

    Evaluation Software (bqEVSW, will have option for GaugeStudio soon):

    http://www.ti.com/litv/zip/sluc246a

    Default Firmware:

    http://www.ti.com/litv/zip/sluc245