Current measurement in nrf52832

RE: Current measurement in nrf52832

Simonr — Wed, 22 Sep 2021 12:27:01 GMT

This does not seem related to the initial post, and I see that you've made a new ticket with this subject. A colleague of mine has been assigned to it and will get back to you.

Here on DevZone we strive to keep each ticket to one subject each, to make it easier for users in the future to navigate the site. Please let me know if you have any further questions regarding current measurements.

Best regards,

Simon

RE: Current measurement in nrf52832

Ridhi — Tue, 21 Sep 2021 06:48:45 GMT

Hi,

I have used PPK 2 and nrf sdk 17 soft device v_7.2.0.

I want assistance that i have nrf 52832 dk, external flash and external sensor. When i intially burn the code on dk, my dk should be in system off mode ie all functionality should be off. Then i want to press a button fpr 5 seconds with which the device enters an advertising mode. and if not button pressed then no advertisment occurs and device remains in sleep mode

Can you assist pls.

RE: Current measurement in nrf52832

Simonr — Mon, 20 Sep 2021 11:51:39 GMT

Are you using the PPK or the PPK 2 for current measurements? What SDK version are you using when flashing the temperature sensor example?

Yes, the external sensors you're using will also add to the total current consumption.

In system OFF mode without RAM retention the nRF52832 should be able to get down to ~0.3uA of current consumption. When measuring on the DK, there will be small amounts of leakage current, so 0.44uA seems correct. Please note that when running examples that use other peripherals (like the temperature sensor) we recommend you prepare the board for system off mode by turning off the peripherals before entering system off. See the main.c RAM_retention example for reference.

If you also plan on using the radio peripheral at all I recommend using the SoftDevice and the sleep_mode_enter() function used in most of our BLE application to get into system OFF mode.

Best regards,

Simon