Observing high Current on nRF52832 in nRF52DK

[arun12]

Hi,

I configured the nRF52832 in nRF52DK in LE Advertisement mode by programing it with "peripheral_lbs" example program in nRF connect extension in Visual Studio Code. 

To disable UART, I've given "CONFIG_SERIAL=n" in prj.conf. and I've set advertising interval to be 1 second by making changes in gap.h .

Still the current I'm measuring for the LE Advertisement state is 510uA at the current measurement point, which seems to be higher than expected.

while disabling the advertisement state in the same program ("peripheral_lbs"), I'm expecting the chip to be in sleep state. But that state too, the current measured is 409uA.

Both these current numbers looks higher for sleep and advertisement states.

what are the numbers to be expected from nRF52832 at these states and how to achieve that state and measure the current.

Regards,

Arun

[Susheel Nuguru]

We have seen this issue on multi core devices like nRF53 but not on nRF52. I will test this on Monday to see if I see the same and give you a possible workaround.

[arun12]

ok Thank you Susheel Nuguru 

[Susheel Nuguru]

I get about 135uA average current testing that sample on nRF52832DK with the PPK-II

Used nRF Connect SDK 2.5.2. Seems normal average in advertising state.

Make sure you have connected your PPK properly to the device.

https://infocenter.nordicsemi.com/pdf/PPK2_User_Guide_v1.0.1.pdf

[arun12]

Hi Susheel Nuguru (Aryan), 

I'm not using PPK but am measuring from the current measurement point in the DK, using an ammeter.

and above is my observation following that method.

Regards,

Arun

[Susheel Nuguru]

Still see the same result on the multimeter as well

[arun12]

this is the same point from where I'm measuring, can you confirm the configuration that I'm doing?

"

LE Advertisement mode by programing it with "peripheral_lbs" example program in nRF connect extension in Visual Studio Code. 

To disable UART, I've given "CONFIG_SERIAL=n" in prj.conf. and I've set advertising interval to be 1 second by making changes in gap.h .

Still the current I'm measuring for the LE Advertisement state is 510uA at the current measurement point, which seems to be higher than expected.

while disabling the advertisement state in the same program ("peripheral_lbs"), I'm expecting the chip to be in sleep state. But that state too, the current measured is 409uA."

Regards,

Arun

[Susheel Nuguru]

I haven't changed anything in the perupheral_lbs sample except for adding the CONFIG_SERIAL=n in the prj.conf file. 

I used nCSv2.5.2 with nRF Connect extension for VSC. Verified it both with PPK and ampmeter. Haven't tested this with advertisements disabled.

[arun12]

oh, Thank you Susheel Nuguru