BQ76942EVM: Connection issues - Worked before restart now won't connect on my machine

Hi Iwan,

If there is no issue on your colleague's PC, then I'm inclined to think it's an issue with the update to your PC. 

I would make sure that all of your PC's drivers are up to date. Also make sure that you are installing the latest version of the test branch of BQStudio. You may also try installing the 1.3.125 version since the update a few months ago changed a few things.

Make sure the device is powered on and plugged into the PC before starting the eval software.

Regards,

Max Verboncoeur

Hi! Thanks for the reply.

Yes I agree it's something that went wrong on my PC, the hardware is definitely fine...

I will try to install the older version, I'm sure that I had the latest version installed, I tried both the test and the stable versions.

I'll let you know if I came right

Unfortunately older version had the same issue.

- Device has power (Confirmed with a multimeter, REG18 is at 1.8V as expected, input voltage is at 22V, LEDs light up when USB is connected, and 5V and 3V3 is present)

I can see 2 devices enumerate when I connect the USB:

- USB Input Device
- HID-complaint vendor-defined device

Is there a place I can manually download the drivers for the USB?

I noticed sometimes the bottom of the screen displays a message:

"No free adapters are available for use on this system."

Hi Iwan,

The only other thing I can think of is to try reinstalling the EV2400 firmware. If that doesn't solve the problem, then it's likely something wrong with the PC and you would probably need to take that up with your IT department.

Regards,

Max Verboncoeur

I know the firmware works as it works with my coworkers machine. So I don't think reinstalling the firmware will help at all.

Thank you for your response.

How do I reflash the firmware?

I downloaded the flasher software. Do I need a hex file?

Do I need a programmer?

Hi Iwan,

It looks like the USB port is not working correctly and the device is not able to communicate with the PC properly. I would try reinstalling your USB drivers, although I am not an expert on these matters. I recommend working with your IT department to resolve the issue.

Regards,

Max Verboncoeur

Thanks Max. I tried reinstalling the drivers, but they keep doing the same thing, I scheduled my PC to have windows reinstalled. That should solve the problem.

The IT Guy couldn't figure it out also.

Hi Iwan,

One last thing I can think of is that the firmware updater you are using is version 0.28. The latest version is 0.32 and might be worth a try.

You might also check with another board, or with another USB cable, just to be sure. Sometimes certain types of cables don't work.

Regards,

Max Verboncoeur