PWM Control Test

Go to the “FriendlyARM” tab and click on the “PWM/Buzzer Testing” icon to open the interface. By default, the output frequency of PWM is 1000Hz. Click on the “Start” button, the buzzer will beep. Clicking on the “+” or “-” button will change its frequency and sound as well. Clicking on the “Stop” button stops the buzzer

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