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BQ24251 Standalone mode timing

Rudy Garcia
Intellectual 380 points

 Is there any way to immediately set the chip to Standalone mode while in Host mode or do we have to wait for the 50s watchdog timer to expire?

  • 0
    TI__Guru*** 143950 points
    You have to wait for the watchdog timer to expire to exit host mode.
  • 0 in reply to Jeff F
    Intellectual 380 points

    Jeff,

    Are there any registers we can read to confirm that the charger is in standalone mode? 

    If the registers are reset to default values (in Standalone mode), can I just assume that any read of a register that was changed from the default setting in Host mode back to default settings confirms that I am in Standalone mode? For example, let say I set register #4 charge current to 100mA in Host mode and after the watchdog timeout the charge current s/b set to default (external ISET) in Standalone mode. When my code reads this register I can say that I am in Standalone by the fact that the register was reset to its default. Is this correct?

    Rudy

  • 0 in reply to Rudy Garcia
    TI__Guru*** 143950 points
    Your idea about reading a know register that was changed from default would work. Or you can read Register 1 bit 7 WD_FAULT and if it is a 1, then you are in standalone.