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'analogWrite' was not declared in this scope.

Hi,


I bought a pre-assembled Bittle and trying to start calibration.

I'm following steps bellow, and trying to compile testBuzzer in 4.2.7.


But I got 'analogWrite' was not declared in this scope.

I suppose this is a simple question, but how can I compile this?


Regards,

To


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Rongzhong Li
Rongzhong Li
2021年3月18日

The output is correct. It's not supposed to keep buzzing people, as programed in the code.

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