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MicroZed: driving LEDs using the user MIOs of PMOD

Former Member

Hi,

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 someone 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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    ZynqBooks tutorial 4A makes the LEDs cycle on ZedBoard carrier board using Vivado and a small C program. With minor changes it works for the MicroZed board u2013 and makes a great intro to Vivado BSP generation. The ZynqBooks tutorials are free to download. Then change this:

    1. All references to ZedBoard become MicroZed
    2. p95 step (an) u201CRun Connection Automationu201D doesn't appear as you need to add the AXI interface first:
      - Re-customise IP -> clock config -> PL fabric clocks -> FCLK_CLK0 100MHZ enabled
      - PS-PL config -> GP master AXI -> MAXI I/face = selected
      - OK
    3. p96 step (au) constraints editing: the LEDs are on different pins on the MicroZed carrier. Change u201Cset_property PACKAGE_PIN T22u201D to u201CU14u201D etc. Changes for LEDS_out[0..7] are:
      From: T22,T21,U22,U21,V22,W22,U19,U14 (for ZedBoard carrier)
      To: U14,U15,U18,U19,R19,V13,P14,R14 (For MicroZed carrier)
    4. Note there are some minor UI differences in later versions of Vivado compared to the version used in the tutorial. Nothing major though.


    You will need to use the Xilinx Platform Cable adapter to follow the tutorial to the letter.

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  • 0

    ZynqBooks tutorial 4A makes the LEDs cycle on ZedBoard carrier board using Vivado and a small C program. With minor changes it works for the MicroZed board u2013 and makes a great intro to Vivado BSP generation. The ZynqBooks tutorials are free to download. Then change this:

    1. All references to ZedBoard become MicroZed
    2. p95 step (an) u201CRun Connection Automationu201D doesn't appear as you need to add the AXI interface first:
      - Re-customise IP -> clock config -> PL fabric clocks -> FCLK_CLK0 100MHZ enabled
      - PS-PL config -> GP master AXI -> MAXI I/face = selected
      - OK
    3. p96 step (au) constraints editing: the LEDs are on different pins on the MicroZed carrier. Change u201Cset_property PACKAGE_PIN T22u201D to u201CU14u201D etc. Changes for LEDS_out[0..7] are:
      From: T22,T21,U22,U21,V22,W22,U19,U14 (for ZedBoard carrier)
      To: U14,U15,U18,U19,R19,V13,P14,R14 (For MicroZed carrier)
    4. Note there are some minor UI differences in later versions of Vivado compared to the version used in the tutorial. Nothing major though.


    You will need to use the Xilinx Platform Cable adapter to follow the tutorial to the letter.

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