When the battery is completely out of power, the plugged usb charging cannot enter the precharge state.

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Last post
Sun, 2019-06-09 10:13
#1
魏文彬
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When the battery is completely out of power, the plugged usb charging cannot enter the precharge state.

Hi DATEAM

When the battery is completely out of power, （voltage = 0v）the plugged usb charging cannot enter the precharge state.

And i set "dg_configBATTERY_LOW_LEVEL 800" , it means not limit the battery voltage.

i find when the battery is completely out of power, （voltage = 0v）,then ,i attach charge,it will not enter perchagering(10ma) status and enter charging(180ma)

may i ask why?

i use DA1468x_DA15xxx_SDK_1.0.14.1081 in DA14682

thanks！

Device:
DA1469x
Mon, 2019-06-10 16:27
PM_Dialog
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Hi There,

Hi There,

If the dg_configBATTERY_LOW_LEVEL is not zero, this is the lowest allowed limit of the battery voltage. If VBAT drops below this limit, the system enters hibernation mode. The DA14682 can wake up form hibernation via the VBUS (USB) interrupt. So, as soon as the chip enters the hibernation mode, you should wake it up via the USB either causing a reset or triggering a GPIO for the wake up. If you would like to trigger a GPIO, you should modify your application code in order to register the GPIO in the wake-up controller and detect the wake-up interrupt.

Thanks, PM_Dialog

Accepted answer
Tue, 2019-06-11 07:15
(Reply to #2)
魏文彬
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you say : "The DA14682 can

you say : "The DA14682 can wake up form hibernation via the VBUS (USB) interrupt. "

But i can't wake up form hibernation by VBUS_Handler

Can you tell me how to wake up the hibernation state through the VBUS interrupt?

thanks!

Tue, 2019-06-25 15:31
PM_Dialog
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Hi,

Hi,

Please check this forum thread. I had replied you there:

https://support.dialog-semiconductor.com/forums/post/dialog-smartbond-bluetooth-low-energy-%E2%80%93-software/cant-wake-form-hibernation-vbushandler

Thanks, PM_Dialog