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David_D
David_D
Associate II
October 27, 2021
Solved

I2C communication with non-existing slave

  • October 27, 2021
  • 1 reply
  • 825 views

Hi. I'm trying to send a message to a non-existing slave via I2C on SPC58EE84E7.

Is this possible?

I get a NACK error message in response.

Are there any examples of such an implementation?

Thank you!

    This topic has been closed for replies.
    Best answer by KnarfB

    NACK means that the SDA line stays high. This is the default SDA state (pull-up) and therefore you get the NACK if no slave aknowledges your request. This is expected behaviour.

    hth

    KnarfB

    1 reply

    KnarfB
    KnarfBBest answer
    Super User
    October 27, 2021

    NACK means that the SDA line stays high. This is the default SDA state (pull-up) and therefore you get the NACK if no slave aknowledges your request. This is expected behaviour.

    hth

    KnarfB

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