RE: Pulse width modulation nRF52832

lovee90 — Fri, 02 Jun 2017 05:58:51 GMT

it works fine. Thanks!

Sigurd — Thu, 01 Jun 2017 11:46:20 GMT

Hi,

Just add this code below the line where you have NRF_GPIO -> OUT = 0 << 17.

uint16_t pwm_seq[4] = {DUTY_CYCLE};
NRF_PWM0->SEQ[0].PTR  = (uint32_t)pwm_seq;
NRF_PWM0->TASKS_SEQSTART[0] = 1;

Note:

I would recommend using the PWM drivers that we have in the SDK. There is an example in SDK_folder\examples\peripheral\pwm_driver\. If you want a simpler example you can find one in this devzone post.
If you are concerned with power consumption, I would recommend making the part of the code where you check button 1(pin 13) interrupt driven. Take a look at the pin_change_int example in the SDK.