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Thread: (DAVE 4) XMC 2Go - I2C APP - Requesting data from sensor

  1. #1
    Beginner Beginner persike will become famous soon enough
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    (DAVE 4) XMC 2Go - I2C APP - Requesting data from sensor

    Hello guys,

    I'm trying to get information from a Infineon magnetic sensor using a XMC 2Go and DAVE 4.
    The I2C Transmitt function is working (reggarding the bug mentioned at the topic: https://www.infineonforums.com/threads/5379-XMC-2Go) and now I'm trying to find a way to use the Receive function because it's not exactly as I need.
    To receive data from this specific sensor (also a Infineon sensor), I should send the sensor address, desired register address and then the master is ready to receive data. I can do it using an Arduino by a bit bang i2C communication as shown in the picture:
    Click image for larger version

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    When I try to receive data using DAVE 4 and XMC 2Go, I can't send the second information (desired register address) and then I start receiving data since the sensor address is sent, as shown in the picture:
    Click image for larger version

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    I searched for a function to do that and tried to combine transmitt and receive functions but I'm not having success on it. The main code is attached.

    Does anybody have any idea on how can I do it?
    main.txt
    Last edited by persike; Sep 21st, 2017 at 11:02 PM.

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