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• Arduino IDE报错：'ledPin' was not declared in this scope。
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• Arduino IDE调试代码基本操作
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• 调试宝典
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• Arduino IDE报错：expected initializer before '%' token（不一定是'%'，也会是其他字符）
  (14175 次点击)
• Arduino IDE报错：expected unqualified-id before numeric constant
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• Arduino IDE报错：expected unqualified-id before 'else'
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• Arduino IDE报错：'serial' was not declared in this scope
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• 上传出错？
  (6744 次点击)