4 Replies Latest reply on Mar 27, 2015 8:19 PM by yilog

    I2C problem in edison arduino board

    yilog

      hi all,

      I have work with edison I2C interface for  a month, but no good result. please help.

      I have used "wire" library in arduino IDE, "mraa" library in eclipse IDE and "node.js" language for connect  GY-80 with edison arduino board by I2C interface.

      The latest progress is when i use a Salease Logic Analyser catch the wave shape from SDA and SCL if  my GY-80 is not connect with edison, The wave is right.

      But when GY-80 is connect with edison .The wave can`t recognise by Logic Analyser. The wave of SDA and wave of SCL is misplacement.  the first SDA rise when SCL is high signal level.

      QQ鍥剧墖20150322223222.png

      The right wave can recognise by Logic Analyser, "Setup Write to[0xxx]" is right.

      QQ鍥剧墖20150322223508.png

      please help me!