Neo M4 I2C

Discussion in 'Arduino IDE' started by Gary Huband, Aug 17, 2016.

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  1. Gary Huband

    Gary Huband New Member

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    I'm having trouble reading a device on the I2C2 bus from the M4.
    I disabled the BRICKS connector using the Device Tree Editor and rebooted.
    I connected the device to J6 SCL and SDA and to GND and 3.3V.
    I then uploaded an Arduino I2C scanner to the M4 (see http://playground.arduino.cc/Main/I2cScanner), but this detects a device at every address.
    Is it possible to use one of the I2C busses with the M4? If yes, please give me detailed instructions.

    Thanks
     
    Gary Huband, Aug 17, 2016
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  2. waltervl

    waltervl UDOOer

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    The directions are not completely clear but to use the I2C on the M4 SCL
    and SDA pins you don't have to do anything. It is enabled by default. So you have to go back to the default configuration on the device tree editor.
     
    waltervl, Aug 20, 2016
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  3. Gary Huband

    Gary Huband New Member

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    OK, it appears to work now. For some reason the I2C scanner code from the Arduino site does not work on the Neo. Thanks for your help.
     
    Gary Huband, Aug 22, 2016
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  4. ektor5

    ektor5 Administrator Staff Member

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    ektor5, Sep 20, 2016
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