nRF52832 consume current > 5mA

RE: nRF52832 consume current > 5mA

sanghan — Fri, 09 Feb 2018 09:30:31 GMT

Thank for Reply.

power_manage() inside called sd_app_evt_wait(). i disabled UART and SPI. current not reduce.

I found the cause of the problem. I used timer 1ms tick.

I solved my problem. i add code Infinite loop in __WFI(). Timer tick change 500ms and use wake up.

My nRF52832 consumed under 2mA.

RE: nRF52832 consume current > 5mA

Kenneth — Fri, 09 Feb 2018 07:59:54 GMT

The power_manage() will return immediately if there is a pending application interrupt not handled.

RE: nRF52832 consume current > 5mA

Nguyen Hoan Hoang — Fri, 09 Feb 2018 02:13:48 GMT

A while loop like 'while(1);' consumes about 6mA but 'while(1) { __WFE(); }' consumes less than 10uA. I suggest first to test that without any thing else. If you don't get a similar result, then there must be a hardware leakage somewhere. Enable UART will consumes about 300-500uA.

RE: nRF52832 consume current > 5mA

Kenneth — Thu, 08 Feb 2018 21:56:50 GMT

Hi,

It is a bit difficult to know exactly what is the problem here. The chip will typically not be able to enter low power mode if there are pending interrupt that are not handled or peripherals that are enabled and active. So I guess my suggestion for debugging is to try to disable peripherals or stop serial tasks before trying to enter sleep.

Best regards,
Kenneth