• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 63 subscribers
  • Views 718 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ28Z610: Gas Gauge Broadcast Master Mode I2C won't work.

Steven Hagger
Prodigy 80 points
Part Number: BQ28Z610

Hi,

I am trying to get the BQ28Z610 to broadcast it's current and voltage requirements on the I2C bus but how ever much I try it will not broadcast. I can read those registers with a host micro and write them to my charger in a loop and the system works. So i am fairly sure that the chemistry and other charging registers are setup ok. However when the host micro is disabled and the bus left pulled up, the BCAST bit enabled and the register addresses set, with a scope attached I can't see any attempt by the BQ28Z610 to transmit on the bus.

Any help would be greatly received, this appears like it should just happen but there is something stopping it !

Thanks,

Steve

  • 0
    TI__Guru* 76230 points
    hello Steve,
    Did you programm your charger address and the charger voltage and current register on the gauge? And what did you set the braodcast pacing to? Did you set the bcast flag? After you made those changes, did you send the reset command (0x41) so all those changes gets effected in RAM?

    thanks
    Onyx
  • 0 in reply to Onyx Ahiakwo
    Prodigy 80 points

    Hi Onyx,

    Yes I have programmed the correct addresses, set the bcast register bit to 1, and pacing to 15s. I have also applied reset. None of this works. But with scope attached I can't even see any attempt of a transaction starting.

    Thanks

    Steve