bq78pl116 current always zero

Goa Will

Other Parts Discussed in Thread: BQWIZARD

After i use 0x80 and 0x81 to calibrate current zero offset and current gain ， the current i got by 0x0a always zero，the voltage of cells are all right,and the current i gauge was 20A。how can i got the right num by 0x0a?

over 12 years ago

0 ThomasCosby over 12 years ago

TI__Guru 73830 points

Goa,

Which version of firmware and bqWizard are you using? Have you tried calibrating with the Calibration utility in bqWizard?

Regards

Tom

0 Goa Will over 12 years ago in reply to ThomasCosby

Prodigy 40 points

Thomas

i did not use bqwizard to calibrate, the current i got by 0x0a was correct before calibrate current zero and gain,and now i always get zero although the current is flowing

0 ThomasCosby over 12 years ago in reply to Goa Will

TI__Guru 73830 points

Goa,

Can you try calibrating the pack using bqWizard to see if you can return it to a good state? I will have to test calibrating it with the SBData commands. Which version of firmware and bqWizard are you using?

Tom

Power management

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bq78pl116 current always zero