BQ28Z610-R1: Data Flash Access

Martin R.

Part Number: BQ28Z610-R1
Other Parts Discussed in Thread: BQSTUDIO, BQ78Z100, BQ28Z610

Hello,

in relation to the gauge calibration I want to update the calibration values of Cell Gain, Pack Gain, and so on.
To understand the mechanism I use the Advance Comm in bqStudio. The sluuc81.pdf describs the write to DF and read from DF. I am fine with read from DF, but write doesn't change the values I want.

If I do the commands for Cell Gain based on the example in the TRM...
To update data1, send a block write with command = 0x3E
block = starting address + DF data block
           = 0x00 + 0x40 + data1_LowByte + data1_HighByte
           = 0x00 + 0x40 + 0x62 + 0x2F

0x2F 62 = 12130

... the value in the next read from DF ist still the previous one 12139 (0x2F 6B).

An idea what I am doing wrong?

over 2 years ago

+1 Wyatt Keller over 2 years ago

TI__Guru** 104835 points

Hello Martin,

There are a few other threads with additional information on the checksum you must also write. I have attached a short guide designed for BQ78Z100, but it will also work for BQ28Z610.

1106.writing to dataflash.pdf

Sincerely,

Wyatt Keller

0 Martin R. over 2 years ago in reply to Wyatt Keller

Intellectual 295 points

Thank you very much. This is what I was looking for. Especially the guide from Onyx has important hints.
But I still have trouble getting it to work.

The device is in full access mode.

0 Wyatt Keller over 2 years ago in reply to Martin R.

TI__Guru** 104835 points

Hello Martin,

If you are trying to update the calibration data you will need to follow the TRM guide for doing this in section 11.4.3 CC Gain/Capacity Gain Calibration

You should be able to modify the value directly, I was able to change the value on my side, were all the command successfully sent? Can you take a screenshot of the dashboard?

Sincerely,

Wyatt Keller

0 Martin R. over 2 years ago in reply to Wyatt Keller

Intellectual 295 points

Of corse, I follow the TRM guide section 11.4.3, but I stuck in "9. Write the new CC Gain and Capacity Gain values to data flash."

0 Martin R. over 2 years ago in reply to Martin R.

Intellectual 295 points

Actually I tried the same commands with an other tool and it works.

So probably I have an issue with the bqStudio and the Advanced Comm.

0 Wyatt Keller over 2 years ago in reply to Martin R.

TI__Guru** 104835 points

Hello Martin,

That's strange since it is working for me. I would recommend trying again with the new test version of bqStudio, this is the most up to date version which will have the most fixes in it.

I'm glad you were able to get it working with your other tools.

Sincerely,

Wyatt Keller

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BQ28Z610-R1: Data Flash Access