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BQ28Z610: BQ28Z610 change UTD fail

Star Xu
Genius 9645 points
Part Number: BQ28Z610
Other Parts Discussed in Thread: BQSTUDIO, , BQ25792

Hi 

The customer want to change UTD value by Advanced comm.

Proceed as follows:

1. Read 0x46e9, the third byte returned is 03, I want to change it to 02

2. Write: Write e9 46 02 into 3e

3. Write checksum FF in 0x60 - (e9+46+02) = CE, data length 05

4. Read the UTD delay value again. It is found that the value has not changed, it should be 03.
 
Please help check it.
Thanks
Star
  • 0
    TI__Mastermind 24196 points

    Hello Star,

    Make sure that in BQStudio auto refresh is turned off! 

    To change data memory parameters, follow these steps:

    1. Write the address of the data memory parameter to the MAC Address
    W 0xAA 0x3E 0xE9 0x46

    2. Write the new value for the data memory parameter to address 0x40
    W 0xAA 0x40 0x02

    3. Calculate the checksum
    0xFF - (0xE9 + 0x46 + 0x02) = 0xCE

    4. Write the checksum to 0x60
    W 0xAA 0x60 0xCE

    5. Write the length to 0x61
    W 0xAA 0x61 0x05
    (Length = 2 address bytes + 1 data byte + 1 checksum byte + 1 length byte)

    These steps show each write command is separated, but step 1 and 2 can be sent in one write command, as well as 4 and 5.

    Regards,

    Nick Richards

  • 0 in reply to Adrian
    Prodigy 160 points

    Hello Nick Richards

    Thank you for your reply。

    I have a new question,We use bq28z610 for the coulometer and bq25792 for the charge management chip

    Adapter plugged in, green light, keep charging the battery. When the green light goes out, I read the 0x2c register in the bq28z601 and found that the value is about 0x5B and 0x5C, that is, the percentage of electricity is about 91% 92%. Why is it not 100% when full, and where can this be configured so that it can reach 100%?

    Regards,

    lishujie

  • 0 in reply to lishujie
    TI__Mastermind 24196 points

    Hey lishujie,

    Can you please post a new thread with this question. Your question is completely unrelated to the original question asked. This is to make sure our e2e support is straight forward for other people who are viewing the thread. When you post your new thread, make sure to include the gauge's gg file, and try to get a log file showing the charge process happen.

    Regards,
    Nick Richards