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Thread: ERU cant trigger TRAP function - XMC bug

  1. #1

    ERU cant trigger TRAP function - XMC bug

    Hi All,

    setup : xmc1300 kit + DAVE 4.

    I have two digital inputs connected to the ERU unit and then performing an logical AND. This signal I want to use for the TRAP signal into the CCU8. Everything compiles, without errors nor warnings, but the TRAP functionality obviously does not work as it should.

    I have attached code showing the XMC failure to combine the ERU with TRAP functionality.

    Code overview:
    - DIO_PWM1_H0, P2.4 -> Connects to ED_PWM1_H, signal a
    - DIO_PWM1_H1, P2.2 -> Connects to ED_PWM1_H, signal b
    - DIO_PWM1_T1, P2.5 -> Connects to ED_TRAP, signal a
    - DIO_PWM1_T2, P2.1 -> Connects to ED_TRAP, signal b
    - PWM_CCU8_0, P0.0

    * ED_PWM1_H (logical AND)- starts the PWM on event0 - This works
    * ED_TRAP (logical AND) - should perform trap on event2 - This just fails

    If anyone can comment on the ERU unit and the TRAP functionality that would be useful. For now it seems that there is a bug somewhere in the hardware.


  2. #2

    Further fail of ERU and TRAP

    Hi All,

    Here is an even simpler example of not being able to use the ERU and TRAP together.

    Same setup as before.

    Code (see attached):
    - DIO_IN - P 2.4, connected to the event detector
    - DIO_OUT - P0.0, the OGU pdout is connected to this pin

    Idea : P0.0 should have the same signal as on P2.4. (Simple test)
    Result : The ERU fails to produce the correct trap signal.


  3. #3

    Infineon Employee
    Infineon Employee
    jferreira will become famous soon enough
    Join Date
    Oct 2012

    Please have a look to the attached project.
    Click image for larger version

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    The level of the potentiometer in the XMC1300 bootkit switches on/off the LED on P0_0.

    Best regards,
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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