Part Number: BQ34Z100-R2
Other Parts Discussed in Thread: BQSTUDIO
Hi
Recently, some ICs will return NACK for a Byte after SlaveAddress.
However, this problem can be solved by lowering the rate below 100KHz.
Why is there such a difference?

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Part Number: BQ34Z100-R2
Other Parts Discussed in Thread: BQSTUDIO
Hi

OK, I can discuss with my customer whether to agree to provide the file for analysis.
In addition, this file can be programmed successfully in most (tens of thousands) of ICs, only a few (less than 100) ICs will be the same as what I described.
Is it convenient to provide me with your Email?
I send you the custom file for analysis.
Hello Yuxuan,
The error in the screenshot is at line 4 which is actually the first command. This is an error communicating with the gauge. It has not even received the first command, so i would check connections or retry. In gauge mode occasional Nacks are normal and host must retry in such case. I will check what the other error signifies and get back to you.