nRF52832 high current with __WFE();

RE: nRF52832 high current with __WFE();

Rick — Wed, 10 May 2017 09:41:41 GMT

Thanks, now I measure about 1.3uA. I thought the debugger wouldn't use any current when it's off but I guess I was wrong. The power profiler would be really cool to have, but as an intern I think it's a bit out of the scope of my project and budget :)

RE: nRF52832 high current with __WFE();

Sigurd — Wed, 10 May 2017 09:13:06 GMT

Hi,

You need to measure on P22. When you measure on P21 you are also measuring the current used by the SEGGER programmer/debugger. See this infocenter page on how to measure with a ampere-meter.

If you are interesting in current measuring for low-power applications, I would recommend buying the Power Profiler Kit. You can read more about it at the product page, and in this blog post.

RE: nRF52832 high current with __WFE();

Rick — Wed, 10 May 2017 07:07:50 GMT

P21 is the external power header, P0.21 is a GPIO port. Powering it through the GPIO would be very wrong indeed :)

RE: nRF52832 high current with __WFE();

Turbo J — Tue, 09 May 2017 19:08:38 GMT

Did you connect the power only to P0.21? That would be very wrong.