1Sec App Timer Consumption

RE: 1Sec App Timer Consumption

Øyvind Karlsen — Tue, 09 Aug 2016 07:52:52 GMT

Toggling a GPIO at 1 sec application timer interrupts should fulfill your needs.

RE: 1Sec App Timer Consumption

Harsha — Tue, 09 Aug 2016 07:50:11 GMT

Hi, My doubt is not app timer. My app timer is working well. In the ISR I have a gpio blinky function using nrf_delay_ms. My objective is to create a single square pulse every 1 sec. The delay function is consuming power. Is there any other way to do this!?

RE: 1Sec App Timer Consumption

Øyvind Karlsen — Tue, 09 Aug 2016 06:57:29 GMT

Hi,

You can check out the application timer tutorial.

RE: 1Sec App Timer Consumption

Harsha — Tue, 09 Aug 2016 06:39:45 GMT

Thanks u RK. Can you give me an example snippet to achieve this. My requirement is one square pulse for 5ms on one of the gpio pins without using Delay Function.

RE: 1Sec App Timer Consumption

RK — Tue, 09 Aug 2016 05:59:49 GMT

Using nrf_delay_ms() or any of the other simple delay function gives the worst possible power consumption as it keeps the processor working constantly performing NOPs. It's also pretty inaccurate, more so the more the processor is doing.

Use an app_timer or anything else based off the RTC which will allow you to sleep most of the time and only wake when interrupted.