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Create UART0 to PMOD (Rx, Tx)

Former Member

Hi everyone,
My problem is that I want create a serial interface with the Zedboard (Rev C).
I tried to find a tutorial, which helps to contact.
I work with XPS and I clicked under "System Assembly View" to I/O Peripherals and selected UART0 and MIO 10,11 (Is this realy a Pin or only an address?). I saw in an other tutorial where someone add an enet0. There was the next step to switch to the tab "Ports" and select to "make Ports external" but I have there no options.

What do I wrong? What is the next step? Can I write in system.ucf easily which PMOD Pin I want? For example:

net uart0_rx_pin LOC = Y11 | IOSTANDARD = LVCMOS33; # JA1
net uart0_tx_pin LOC = AA11 | IOSTANDARD = LVCMOS33; # JA2
(Must I write something to activate VCC and GND? Probably not, isn't it?)
I think, the next step will be to generate the NetList and the Bitstream and to export the hardware design to sdk.

There I read something about by the #define of the pins. Where I find this adresses?

Thanks for help.

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    Hi,
    Thanks for the fast answer.
    I found a good tutorial for Vivado. Problem is, the program don't know the zedboard...

    But i found that way a good tutorial in vivado, which helps more to understand how I can realise the Uart0 to Pins.
    here the link:
    http://blog.idv-tech.com/2014/03/22/howto-export-zynq-peripheralsi2c-spi-uart-and-etc-to-pmod-connectors-of-zedboard-using-vivado-2013-4/

    And if you want do this in XPS:
    Easy select what you want in "System Assembly View" to I/O Peripherals and go to the Tab Ports.
    There is under processing_system7_0 :
    (IO_IF) UART0 a free space => right_click and click on "make external".
    So you have a TX and a RX. But you don't know where they come out.
    Now you must look in the "Platform"-window and open the data/system.ucf file.

    there you must paste where you want TX and RX, but with the right name which you have generated before. In my case, it looks so for RX:
    net processing_system7_0_UART0_RX_pin LOC = Y11 | IOSTANDARD = LVCMOS33; # JA1

    Next you can generate the Netlist and after this the bitstream.
    I don't know if this was all for the moment. I will test it and correct it if something is wrong.
    I hope, this helps some people and save some time.

    Thanks again Gary!

Reply
  • 0

    Hi,
    Thanks for the fast answer.
    I found a good tutorial for Vivado. Problem is, the program don't know the zedboard...

    But i found that way a good tutorial in vivado, which helps more to understand how I can realise the Uart0 to Pins.
    here the link:
    http://blog.idv-tech.com/2014/03/22/howto-export-zynq-peripheralsi2c-spi-uart-and-etc-to-pmod-connectors-of-zedboard-using-vivado-2013-4/

    And if you want do this in XPS:
    Easy select what you want in "System Assembly View" to I/O Peripherals and go to the Tab Ports.
    There is under processing_system7_0 :
    (IO_IF) UART0 a free space => right_click and click on "make external".
    So you have a TX and a RX. But you don't know where they come out.
    Now you must look in the "Platform"-window and open the data/system.ucf file.

    there you must paste where you want TX and RX, but with the right name which you have generated before. In my case, it looks so for RX:
    net processing_system7_0_UART0_RX_pin LOC = Y11 | IOSTANDARD = LVCMOS33; # JA1

    Next you can generate the Netlist and after this the bitstream.
    I don't know if this was all for the moment. I will test it and correct it if something is wrong.
    I hope, this helps some people and save some time.

    Thanks again Gary!

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