BQSTUDIO: BQStudio just stopped working. How do I fix it?

Hello Carl,

Can you try re-uploading your images with any errors you see and if the EV2400 has the LEDs lit up?

It sounds as if either the EVMs were damaged or the EV2400 was. What was changed between the two tests?

Sincerely,

Wyatt Keller

The three green LEDs are on for both of the EV2400's.  I cannot think of anything that was different between last week and today.  How can I check the individual EVMs?

Wyatt, Jeff, and all, I have ordered new EVMs for both the bq25798 and bq34z100. 

I am not sure what I might have done to spoil the old ones.  I have desperately tried many, many things to try to get my system working.  I'm under a lot of time pressure and I don't have a lot of experience with these devices.  It's possible that I did something inadvertently that I shouldn't have. 

I'm wanting to charge a 7s-1p Ni-MH battery pack with either a Solar Panel or a 5V USB source.  My battery manufacturer recommends a 12V charging voltage and 190mA charging current with a 16 hour max timeout.  I will be using a host to send I2C commands to the gauge and charger to implement battery management, solar panel MPPT, and the charging & discharging algorithms.  When the sun is out, my device can work from just the solar panel, while the battery charges (if needed).

I need help.  Not just with the chips, EVMs and battery management studio but also with the entire end system.  Please let me know your thoughts.

Hello Carl,

If you have not changed anything I'm not sure what could cause this failure if the EV2400 LEDs are still lit.

Can you try updating the EV2400 firmware and also updating BQStudio to the test version?

I'm not as familiar with the charger parts to know what it can supply or the chemistries supported. From my understanding this charger does not support NiMH chemistry. I would make a separate post linking only the charger for help from our charger team about this.

Sincerely,

Wyatt Keller

I know how to download and install the latest battery management studio.  How do I update the EV2400 firmware?

Hello Carl,

Both downloads are on the corresponding product pages.

https://www.ti.com/tool/BQSTUDIO

https://www.ti.com/tool/EV2400

Sincerely,

Wyatt Keller

Wyatt,

I bought a new BQ25798EVM and BQ34z100EVM.  Updated the EV2400 firmware from v0.18 to v0.32 for both my EV2400s.  I also updated the BQStudio from 1.3.101 to 1.3.111.

The new BQ25798EVM is working.  I get an ACK OK response to read registers, etc.  Everything else seems to be okay.

When I start a second instance of the BQStudio with the EV2400 attached to the bq34z100EVM, I expect it to autodetect like it used to.  But it doesn’t.  I select “Gauge” from the device selection screen and then 0100_0_16-bq34z100G1.bqz from the list of gauges but, then I get an error message: “The detected device is not compatible with this application! …”  I click “OK” and the application seems to load for a little while with the bq34z100g1 but then loses contact (the left panel of the window doesn’t show a device anymore).  The error messages say “no acknowledgement…” from the device.

I also tried swapping EV2400 (the one that was working with the bq25798evm for the bq34z100evm.  But observed the same result.

Carl

I'm nearly ready to give up on the evms with ev2400s.  I have spent a lot of time and money with only inconsistent and unusable results.  I'm ready to try a host-based system, which is where I need to end up anyway.

I have a MSP-EXP430FR5969 launch pad from TI, along with code composer studio, etc.

Would the MSP430FR5969 make a suitable host for my solar panel charging system?  Please let me know your thoughts.

Thanks,

Carl Olen