PWM can't output low level when it is idle.

PWM can't output low level when it is idle.https://devzone.nordicsemi.com/f/nordic-q-a/128205/pwm-can-t-output-low-level-when-it-is-idleHi， ncs v3.2.0，nRF54LM20-DK， I drive a buzzer. When the buzzer doesn't ring, I need a low level. I tried it according to the following method. I can't output a low level when pwm is idle. ①Change PWM_POLARITY_NORMAL to PWM_POLARITY_INVERTED，Pwm canen-USTelligent Community 13Thu, 21 May 2026 09:12:40 GMTRE: PWM can't output low level when it is idle.https://devzone.nordicsemi.com/thread/566658?ContentTypeID=1Thu, 21 May 2026 09:12:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:808b5dd1-a718-44df-a75d-4fa6049e6a53Håkon Alseth<p>Hi,</p> <p> </p> <p>You are setting the PWM instance as inverted:</p> [quote user=""]<span> </span><span>pwms</span><span> </span><span>=</span><span> <</span><span>&</span><span>pwm21</span><span> </span><span>0</span><span> </span><span>PWM_MSEC</span><span>(</span><span>20</span><span>) </span><span>PWM_POLARITY_INVERTED</span><span>>;</span>[/quote] <p>as a result, the pin will then be idle high when you call this function:</p> [quote user=""]int ret = pwm_set_pulse_dt(&buzzer_pwm, 0);[/quote] <p> </p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>