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Smart Bluetooth

legic_1490776
Contributor II

Is there a recommended strategy for monitoring battery level if the device is powered from a regulator (i.e. VBAT pin is at the regulated voltage)?  It seems that feeding a voltage higher than VBAT into any port would damage the part, so in order to make use of the internal ADC for battery measurement we would need some external circuit.  Is there a recommended solution to this problem?

The best I could come up with was a voltage divider and a transistor to turn it on, but this would also require modification of the built-in battery monitoring code to switch on the transistor.

Has anyone come up with a good solution to this problem?

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1 Solution
MichaelF_56
Moderator
Moderator

Unfortunately, the development team could not provide any guidance here.

View solution in original post

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4 Replies
MichaelF_56
Moderator
Moderator

I'm checking with the development team to see if they can provide any guidance on this topic as the question appears to have never been asked.

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MichaelF_56
Moderator
Moderator

Unfortunately, the development team could not provide any guidance here.

View solution in original post

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Anonymous
Not applicable

Has there been any update to this? I am also in the very same boat?

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MichaelF_56
Moderator
Moderator

Nothing new.

Maybe this may help as it focuses on regulating battery power as opposed to regulator:

Measuring Battery life with BCM20732S

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