https://devzone.nordicsemi.com/f/nordic-q-a/26417/about-the-pwm-routines-demo5-nrf52832-settingsHow do you do Now use E: \ Nordic \ nRF5_SDK_12 2.0 \ examples \ peripheral \ pwm_driver \ pca10040 demo5 pwm_driver routine There are two problems: How to change the PWM duty cycle, he tried to such a change But no matter use, const nrf_pwm_values_individual_ten-USTelligent Community 13Mon, 30 Oct 2017 17:08:43 GMThttps://devzone.nordicsemi.com/thread/103968?ContentTypeID=1Mon, 30 Oct 2017 17:08:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:46ac2585-b498-4cfe-92fd-393429ec8e1bSigurd<p>Hi,</p> <ol> <li> <p>Did you change <code>m_demo1_step</code> ? The duty cycle will be the ratio between seq_value and .top_value.</p> </li> <li> <p>Yes, Some GPIO pins on the nRF52-DK are used for other things, e.g. LF-Crystal(p0.00 p0.01), buttons, leds. Pin 9 and 10 are used for NFC by default. p0.06 is used by the UART. See <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/development/nrf52_dev_kit/hw_conn_interf.html?cp=2_1_4_5_3">this page</a> for a drawing.</p> </li> </ol><div style="clear:both;"></div>