BQ40Z50: 0X23 query

Star Xu

Genius 9645 points

Part Number: BQ40Z50
Other Parts Discussed in Thread: BQSTUDIO

I have a query need your help.

What is the final data? Sending different commands has different values.

Auto refresh is turn off.

Please help check it.

Thanks

Star

over 1 year ago

0 Anthony over 1 year ago

TI__Mastermind 28470 points

Hi Star,

Can you please go more into depth about what registers are trying to be read/written to and what your process is?

Regards,

Anthony Baldino

0 Star Xu over 1 year ago in reply to Anthony

TI__Genius 9645 points

Hi Anthony

Thanks for your help.

Use a logic analyzer to capture the I2C waveform of the gauge. Through BQStudio, send commands to read voltage and temperature, and find that there is an extra data.

Thanks

Star

0 Anthony over 1 year ago in reply to Star Xu

TI__Mastermind 28470 points

Hi Star,

The 0x23 at the end of the read command is the checksum of the data that has been read. This is normal for it to be different based on the data that it is reading.

Regards,

Anthony Baldino

Power management

Power management forum

BQ40Z50: 0X23 query