The wave of PWM output

[lpheni]

Greetings,

I use gpio1_11 as PWM2 output.

After I set the PWM output, if the frequency is set to 8KHZ, period = 125000, duty_cycle = 62000, then the output is a square wave. If set to 8MHZ then the output is sine wave,period = 125, duty_cycle = 62.

Can you help me find out what the reason is? Thank you!

[lpheni]

Hello, this problem is caused by the oscilloscope. After replacing the oscilloscope, the output is square wave.

Thanks！

[Zhiming_Liu]

Hi

Please refer https://bbs.21ic.com/icview-3304758-1-1.html

Best Regards
Zhiming