https://devzone.nordicsemi.com/f/nordic-q-a/52238/51802-pwmHELLO, I am trying to generate a 125kHz pwm siginal using nrf51802（sdk version12.3）. I use the oscilloscope to observe the wave form.I change the macro value of PERIOD_IN_US for different number, but the frequency did not change.The period of waveformen-USTelligent Community 13Wed, 18 Sep 2019 07:11:24 GMThttps://devzone.nordicsemi.com/thread/210282?ContentTypeID=1Wed, 18 Sep 2019 07:11:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bfe55465-7d40-4f58-ba29-641579379978rick2049<p>I am testing this with the Softdevice enabled. thanks for you explain.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/210275?ContentTypeID=1Wed, 18 Sep 2019 06:54:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:93e66eee-59c3-4bae-af42-a5833b053829Vidar Berg<p>Thanks for the update. Are you testing this with&nbsp;or without the Softdevice enabled? TIMER0 is reserved to the Softdevice so it could explain the difference.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/210251?ContentTypeID=1Wed, 18 Sep 2019 01:33:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f948dbee-5dd7-42aa-ab6c-8b13ab2b68a9rick2049<p>update.</p> <p>Today I change the timer instance number from 0 to 1,then the problem solved. But I am still confused the reason.</p><div style="clear:both;"></div>