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GPIO speed setting for a slow LED

A GPIO drives an LED that blinks once per second. Why set the pin output speed to low instead of very high?

A.The low speed setting gives the pin more output drive currentB.High speed mode cannot drive an LED and resistor at allC.Low speed mode turns the pin into open-drain automaticallyD.Slower edges cause less ringing and EMI; the LED needs no speed

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GPIO speed setting for a slow LED

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