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MicroZed Hardware Design Dynamic Reconfiguration of Clock Wizard
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Dynamic Reconfiguration of Clock Wizard

Former Member
Former Member over 9 years ago

Hallo everybody,
I am fighting again my MicoZed Board the whole afternoon until now. I am trying to implement the clock wizard with the Dynamic Reconfiguration feature. Synthesis, Implementation and generate Bitstream runs successful. Also the Export to the SDK makes no trouble. In the xparameters.h file I can find the XPAR_CLK_WIZ_0_BASEADDR define. But when I try to read or write to this address the whole controller crashes. By a read access I do not get a response u201Cn/au201D. If I try to read from another address after these access I get the following exception: u201CCannot access DDR; the controller is held in reset.u201D

To read from the clk_wiz I use a variable:
uint32_t* control = XPAR_CLK_WIZ_0_BASEADDR+4;
To read from the Pointer I use the variable window.

The connection between the clk_wiz and the Zynq System (axi light) was made by vivado run connect automation. Thus I do not think that there is my mistake.
Is there anybody who have an idea what I make wrong?
Best regards
Stephan

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  • Former Member
    0 Former Member over 9 years ago

    I found the problem! The Vivado toolchain do not connect the axi_areset wire. Now it works!!!

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  • drozwood90
    0 drozwood90 over 9 years ago

    Hi there,

    Glad you were able to work that out!  Thank you for posting your response to help the community.

    --Dan

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  • venugopal98
    0 venugopal98 over 4 years ago

    Hi Stephan,

    I am trying to use clocking wizard with dynamic reconfiguration on my Zedboard. I have implemented a simple core and I am collecting errors from set of signals, these errors should be able to control the output frequency.

    Since, you have done this could you help me with this on how to perform this. I have no idea on how to program via PS or SDK. if possible could you share an example please.

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