https://devzone.nordicsemi.com/f/nordic-q-a/86313/pwm-library-question-about-the-initHello all, I am using the PWM library, does any of you know what does the &quot; 5000L &quot; stands for in this function ? Indeed, it says 200 Hz, however, I do not see it :) Can anyone help me in layman terms? Best.en-USTelligent Community 13Mon, 28 Mar 2022 11:49:54 GMThttps://devzone.nordicsemi.com/thread/360273?ContentTypeID=1Mon, 28 Mar 2022 11:49:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e5315cd9-d32a-4e93-a6fc-6b759445fa87Karl Ylvisaker<p>Hello Mu234,<br /><br />I can explain the&nbsp;APP_PWM_DEFAULT_CONFIG_2CH macro in layman terms, sure thing!<br />In essence, the default 2 channel macro needs to know which 2 channels to use, and what frequency. <a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/group__app__pwm.html#ga0ab3501072119588eb8bea06efe10350">The first parameter is the frequency given in µs</a>, and is given as 5000L, which translates to 5000 µs, or 5 ms - which is equal to 200 Hz.<br />The L at the end of the 5000 is just a C suffix indicating &#39;long&#39;.<br /><br />Please let me know if any of this still should be unclear, or if you have any additional questions! :)&nbsp;<br /><br />Best regards,<br />Karl</p><div style="clear:both;"></div>