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Topic: Aduino MEGA 2560 + Eternet shield / SPI communication (Read 391 times) previous topic - next topic

fmartin

Dears,

I am using an arduino mega 2560 + ethernet shield. It is working fine from a network point of view. But I noticed that DIGITAL PIN 51 is always HIGH. Even if I write it low.
I read that such pin 51 is used for SPI communication. Does it explain the HIGH level on pin 51 ? Is there a workaround ?

Thanks for your answer.

Florent

SurferTim

You must leave pins 50-53 alone. Those are used by the SPI bus.

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