https://devzone.nordicsemi.com/f/nordic-q-a/18515/use-one-pwm-drive-multi-iosWe want to use 52832 to control 6 LEDs. it is easy to use 6 IO pins to make them on and off. but we need these LED to blink. so we want to use one PWM module to generate 1 Hz PWM with 50% duty cycle. we need PWM output AND with the IO output control.en-USTelligent Community 13Thu, 22 Dec 2016 08:48:52 GMThttps://devzone.nordicsemi.com/thread/71452?ContentTypeID=1Thu, 22 Dec 2016 08:48:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ffc02349-9fda-4976-b76f-4a24fe0b2f33ovrebekk<p>Hi David</p> <p>It sounds a bit overkill to use the PWM for such a low frequency, unless you need extremely accurate blinking.</p> <p>For blinking LED&#39;s I would suggest using an app_timer instead, and simply toggle the LED&#39;s manually from the app_timer callback.</p> <p>If you use the GPIO registers directly it is possible to set or clear multiple pins in a single instruction, like this:</p> <p>NRF_GPIO-&gt;OUTSET = (1 &lt;&lt; pin1_num) | (1 &lt;&lt; pin2_num) | ... | (1 &lt;&lt; pinN_num);<br /> NRF_GPIO-&gt;OUTCLR = (1 &lt;&lt; pin1_num) | (1 &lt;&lt; pin2_num) | ... | (1 &lt;&lt; pinN_num);</p> <p>Best regards<br /> Torbjørn</p><div style="clear:both;"></div>