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Problem while interfacing I2C device with Raspberry PI 3

Discussion in 'Linux Hardware' started by bucky54, Apr 13, 2018.

  1. bucky54

    bucky54 New Member

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    Hi

    We have current loop receivers which is connected with sensor to interface with raspberry pi.

    Before installing and updating the current loop receiver consisting of IC ADS1115 library we were checking the address for I2C connectivity in command line. As per I2C address the command line should detect the value 0x48(and other must be showing nill __) will show on screen

    But using I2C detect program we are facing the problem as mentioned below

    0 1 2 3 4 5 6 7 8 9 a b c d e f

    00: -- -- -- -- -- -- -- -- -- -- -- -- --

    10: -- 4C -- -- -- -- -- -- -- -- -- -- -- -- -- 1F

    20: 48 -- -- 23 -- -- -- -- 28 -- -- -- -- -- -- --

    30: -- -- 35 -- -- -- -- 37 41 -- -- -- -- -- -- --

    40: -- 41 42 43 44 45 36 -- 48 -- -- -- -- -- -- --



    50: -- -- -- -- -- 55 -- -- -- -- -- -- -- -- -- --

    60: 60 -- 40 4E -- -- -- -- -- -- -- -- -- -- -- --

    70: -- -- -- -- -- -- -- --


    We have reset and reboot both the device as well as the I2C device but still facing same issue

    what could cause this?? any insights will be appreciated
     
  2. cords12

    cords12 New Member

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    Check if any pin has been shorted to another (especially Voltage and ground pins) on printed circuit board?? Also please use spare current loop receiver and check the same issue with another PCB or not.

    hope this might help you
     
    #2 cords12, Apr 21, 2018
    Last edited: Apr 21, 2018
  3. Alexis_H

    Alexis_H New Member

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    Hi you may have more hardware connected trough I2C: Memory, Power manager, and so on.
    You can confirm this by searching the datasheets of the IC's included in your PCB.

    Hope this helps, best regards.


     
    Rob likes this.

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