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Xinyuan-LilyGO / LilyGo-AMOLED-Series

LilyGo AMOLED Series
MIT License
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amoled.isBatteryConnect() always returns 0 - T-Display S3 AMOLED 1.91 v2 touch [H681] #31

Open johnwcha opened 1 month ago

johnwcha commented 1 month ago

all sample code compiles and runs fine running fine on a 1100 mAh Lipo battery amoled.getBattVoltage() seems to work fine either via usb or on battery

However, trying to detect if device is running on battery power, amoled.isBatteryConnect() would always return 0 amoled.isCharging() always returns 0 even though the battery is charging

would appreciate any help. Thanks

StevenLCox commented 1 month ago

Johnwcha, I don't think that function will work because the 1.91 touch does not have a battery power management unit/PMU like the 1.47 lite version. SteveC

On Tue, Apr 9, 2024 at 1:13 PM johnwcha @.***> wrote:

all sample code compiles and runs fine running fine on a 1100 mAh Lipo battery amoled.getBattVoltage() seems to work fine either via usb or on battery

However, trying to detect if device is running on battery power, amoled.isBatteryConnect() would always return 0 amoled.isCharging() always returns 0 even though the battery is charging

would appreciate any help. Thanks

— Reply to this email directly, view it on GitHub https://github.com/Xinyuan-LilyGO/LilyGo-AMOLED-Series/issues/31, or unsubscribe https://github.com/notifications/unsubscribe-auth/AD6NLMR7IBFORLVI5VAPVSLY4QOVNAVCNFSM6AAAAABF6662LOVHI2DSMVQWIX3LMV43ASLTON2WKOZSGIZTGOJTGU2DGNQ . You are receiving this because you are subscribed to this thread.Message ID: @.***>

johnwcha commented 1 month ago

I see. Thanks, Steven.

On the website, it says The module is equipped with a built-in battery management system. Is there any function to work with battery status/charging?

StevenLCox commented 1 month ago

Take a look at the 1.91" version schematic. It only has a TP4065 based charging circuit. It's a dumb charger with no control/status interface to the processor. So no status feedback is possible, The ESP32 can only read the BAT_VOLT voltage on GPIO4. The 1.47" version has a smart interface.

johnwcha commented 1 month ago

Thanks. You're super !!!

StevenLCox commented 1 month ago

Surprised it didn't throw an error. Those functions should only work for BOARD_AMOLED_147 and BOARD_AMOLED_2417 versions. No problem, glad it helped!

StevenLCox commented 1 month ago

Forgot to mention that amoled.getBattVoltage() does work for 1.91". It just uses the ESP32 S3 built in ADC. Gives millivolts.

github-actions[bot] commented 1 week ago

This issue is stale because it has been open for 30 days with no activity.