BQ34Z100-G1: BQStudio with BQ34z100-G1 and BQ76952

Andre Cilia

Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQ76952, , EV2400, BQSTUDIO, BQ76942

Hi,

We have the same issue with a BQ34Z100-G1 fuel gauge and a BQ76952 protector.

BQ-Studio auto detects the fuel gauge and if selected it communicates perfectly.

If on the other hand the EV2400 interface is disconnected, and the BQ76952 protector is manually selected on bootup of the software - the fuel gauge is still automatically detected and the data returned is nonsensical since it still communicates with the auto-detected fuel gauge!

A screenshot is attached to show this. The data displayed seems to be the data of the fuel gauge interpreted as coming from the protector.

It makes no difference if we use the stable version of BQstudio (1.3.101) or the Evaluation version (1.3.104).

over 3 years ago

0 Shirish over 3 years ago

TI__Guru 57697 points

Hello Andre,

Let us know if the instructions in that thread help in your case.

0 Andre Cilia over 3 years ago in reply to Shirish

Prodigy 220 points

Hi Shirish,

That is my own thread yes - and the issue remains still.

Best regards,

Andre Cilia

0 Shirish over 3 years ago in reply to Andre Cilia

TI__Guru 57697 points

Hello Andre,

It looks like step 3 was missed because autorefresh is ON in the picture that is posted.

3. Turn off autorefresh

0 Andre Cilia over 3 years ago in reply to Shirish

Prodigy 220 points

This is the bootup screen showing that the Autodetect is disabled

And this is the configuration page also showing that it is disabled:

Best regards,

Andre Cilia

0 Andre Cilia over 3 years ago in reply to Andre Cilia

Prodigy 220 points

Also regardless whether Auto-refresh is enabled or not I still get the same incorrect data from the fuel gauge instead of the protector as shown in the image below:

Best regards,

Andre Cilia

0 Shirish over 3 years ago in reply to Andre Cilia

TI__Guru 57697 points

Hello Andre,

The sequence of steps is important. One of our engineers tested with the following steps and verified it

1. Physically disconnect I2C connection (at EV2400)

2. Start bqStudio and select BQ76942 manually

3. Turn off autorefresh

4. Connect I2C (at EV2400)

5. At this point the dashboard data will be stale but registers and data flash functions work.

0 Shirish over 3 years ago in reply to Shirish

TI__Guru 57697 points

Turning on autorefresh will cause issues, which have to be worked around by repeating the above steps.

Power management

Power management forum

BQ34Z100-G1: BQStudio with BQ34z100-G1 and BQ76952