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BQ40z50EVM and BQStudio

Aby169
Prodigy 230 points
Other Parts Discussed in Thread: BQSTUDIO, EV2400

Hi,

I have followed the instructions and connected my BQ40z50EVM module with resistors to simulate the cells, powered the device with 10.6V power supply across the 1N and 4P connections, connected a 1K resistor across the pack+ and pack- pins to simulate the load. But the BQstudio software loads up and cannot detect the device. It then asks for me to select the device and BQstudio reports that it does not support the device? Any ideas why it is saying it does not support the device? I am connecting via the EV2300 comms. kit.

Also When I power the EVM module am I meant to see any LEDs lighting up? I do not see any LEDs lighting up.

  • 0
    TI__Mastermind 34775 points

    Hello Aby,

    I'm assuming you referenced the EVM user's guide for BQ40z50EVM: 

    Are you simulating a 3S (3-series cells) or a 4S (4-series cells)? The 10.6V you mentioned is for 3S.

    In the case of 3S you need:

    • 1k resistor across 1N and 1P
    • 1k resistor across 1P and 2P
    • 1k resistor across 2P and 3P
    • short 3P and 4P
    • apply 10.8V (3.6V x 3) across 4P and 1N

    In the case of 4S you need:

    • 1k resistor across 1N and 1P
    • 1k resistor across 1P and 2P
    • 1k resistor across 2P and 3P
    • 1k resistor across 3P and 4P
    • apply 14.4V (3.6V x 4) across 4P and 1N

    Your using EV2300, so you will need to manually install the drivers for your PC operating sysytem from here: 

    On Launch bqStudio should recognized the BQ40z50EVM and connect automatically, if you have done all these things and bqStudio still doesn't connect, try uninstalling and re-installing bqStudio version 1.3.52.

    On power up there's no LED that lights up. You can control the LEDs after in bqStudio.

  • 0 in reply to Damian Lewis
    Prodigy 50 points

    Did the original poster ever get this to work? I'm facing the same problem.  

    I installed the 64 bit drivers from the link above, and re-installed bqStudio (the available version was 1.3.54, not 1.3.52).  

    bqStudio cannot communicate with the EV2300, and there's no I2C traffic.  

    Also tried installing the EV2400 drivers as recommended here, and still no luck:

    Any recommendations?

    Brian

  • 0 in reply to Brian Kuschak85
    TI__Guru* 76230 points
    have you tried using a different computer? possible a 32 bit one?

    if ev2400 isn't working on your computer, you will want to make sure you EVM you are evaluating is properly powered on and that your ev2400 LEDs are lighted up to ensure its functionality.

    thanks
    Onyx
  • 0 in reply to Onyx Ahiakwo
    Prodigy 50 points

    Thank you for the suggestions.  Unfortunately I don't have a 32 bit windows installation anymore.  All my windows machines are running 64 bit.  

    The problem isn't with the EVM.  The EV2300 is not detected properly and there is no activity on the I2C lines (both are high).