I2c clock pin problem ADUC842

Discussion in 'Embedded Systems and Microcontrollers' started by murthyvaidehi, May 8, 2014.

  1. murthyvaidehi

    Thread Starter New Member

    May 8, 2014
    1
    0
    Hi,
    I am interfacing 2 ADUC842 controllers for I2C communication. I am able to communicate, but after communicating for a while the Clock Pin stops working.I have tried this with 3 ICs. The data line seems fine. I have used 10K pull up resistors I would appreciate any help on the problem. Thanks.
     
  2. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,394
    1,606
    A slave device may request extra time to do processing by pulling the clock low. That is frequently done by micro controller based slaves to process the currently received byte.

    I don't have any idea how you would proceed except the obvious suggestion to find a short sequence that reliably reproduces the error (which implies you already know what the error is that you are looking for).

    Good luck.
     
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