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BQ35100: Does Lifetime Data Collection work in Accumulator mode?

Bill Toohey
Prodigy 80 points
Part Number: BQ35100

I'm trying to get Lifetime Data Collection to work while gauging in ACC mode, to get a simple view of voltage sag during a short current spike. I have not yet configured EOS mode.

LF_EN is 1 in Operation Config A
LT_EN command was sent (0x002E)
LTEN bit is set in CONTROL_STATUS

I turn the gauge on for ~4 seconds then turn it off, wait til G_DONE is set and read the LTFlash registers, and they do not move from their default values.

  • 0
    TI__Genius 10370 points

    Bill,

    Yes lifetime should work in ACC mode. 

    When you say "turn it off" are you issuing the Gauge stop command. Lifetime is only committed to flash when the gauge stop command is issued, 

    Thanks,
    Eric Vos

  • 0 in reply to Vos
    Prodigy 80 points

    Thanks for the fast reply. Several features don't work (or work differently) in ACC mode, so I'm glad I asked.

    Upon further investigation and increased logs, I discovered I'd left a debug flag on in our firmware which never issued GAUGE_STOP. Embarrassing, but great to have a resolution!