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Avnet Boards General Controlling the PMOD on the MicroZed
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Related

Controlling the PMOD on the MicroZed

Former Member
Former Member over 12 years ago

I didn't fully KNOW ahead of time that the PMOD on the MicroZed IS NOT connected directly to the PL, and only to the PS.

I learned this when doing the "Zynq Concepts, Tools, and Techniques on ZedBoard", but for the MicroZed, if that makes sense.

Anyway, having now realized that I paid $199 for something that I can not use it for its original intent, which was a board the size of the MicroZed, and using the PL to control the PMOD that is on it, without messing with the microheaders or paying another $149 to get an IO board. If I was going to do that, I would have just bought the ZedBoard.

So, here is my question:

Is there a way that I can CONTROL the PMOD on the MicroZed, through the PS which is somehow controlled by the PL through AXI interconnects or something?

Basically, I just want to be able to somewhat utilize this MicroZed and better learn the PL side of things, but at the same time, there is no IO to control on the MicroZed as it stands, so can I control IO, i.e., the LED and push button, and PMOD, via the PL and through the PS to that IO?

Thanks for your time! Much Appreciated!

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  • bhfletcher
    0 bhfletcher over 12 years ago

    Sorry for any confusion. I think the Product Brief is pretty clear that the Pmod on the MicroZed itself is a PS-connected device.

    2x6 Digilent PmodRegistered compatible interface
    providing 8 PS MIO connections for user I/O

    I think the User Guide explains this as well.

     

    It is not possible to connect the PL to PS MIO directly. You can connect a PL Peripheral to the PS, and use the processor to echo information out onto a PS Peripheral tied to MIO.

     

    Also, be aware that we will have a less expensive Carrier board coming out in December if you want to wait for that.

     

    Bryan

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  • Former Member
    0 Former Member over 12 years ago

    No problem, you are right, it is clearly marked on the product brief and the manuals. I think the board is fantastic, but I just sort of bought when I saw the thing lol...

    Great, I'll look forward to that new carrier board that is coming out in Dec, that will save me then :).

    Much appreciated!

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  • Former Member
    0 Former Member over 11 years ago in reply to bhfletcher

    Hi Bryan,
    I want to use the user MIO that are connected to the PMOD on the MicroZed board to drive the LEDs (via transistor switch) and the MOSFET driver in my PoC design. I have several questions related to both HW and SW that I would be very grateful if you can help:
    1. What is the maximum current these MIO pins can deliver?
    2. How could I control them in my SW applications? Is that possible to include these MIO pins in the file system of the Linux OS?

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  • Former Member
    0 Former Member over 11 years ago in reply to Former Member

    Answered on your other forum post: http://zedboard.org/content/microzed-driving-leds-using-user-mios-pmod

     

    Please do not make duplicate posts of the same question on the forum.

     

    -Gary

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  • Former Member
    0 Former Member over 11 years ago in reply to Former Member

    Yes I have seen that. Thx.

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