User`s manual

High Performance Low Cost Embedded Systems
“Write Data” button, the button will change to a process bar indicating the writing process; click on
the “Read Data” button, it will change to a process bar too indicating the reading process.
3.1.15 PWM Buzzer
In the “FriendlyARM” subgroup, click on the “PWM/Buzzer Testing” icon:
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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