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Direct mapping of PS with PL without AXI

Former Member

Hi,

I am not sure if this is possible, but my PL logic takes e.g 8 bit and I want to send this 8 bit input to PL via PS (in SDK) without involving AXI slave bus. Is point to point connection possible?
Are there 16 pins available on PS which I can directly map to PL (8 for input, 8 for reading output back without involving AXI bus) and configure in SDK? I was unable to find such tutorial. Thanks for help.

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    You can have up to 64 PS (Processor System) GPIO connected to the PL (Programmable Logic) section via EMIO.

     

    There is a one bit example in the ZedBoard Zynq Concepts Tools and Techniques tutorial (chapter 3) that will give you the basics on how to enable the PS GPIO via EMIO: http://zedboard.org/support/design/1521/11

     

    In the tutorial case a constraints file is used to connect the signal to an external pin but you can just connect the signals to internal PL logic as well. Once you have exported your Vivado hardware design to the SDK and generated a BSP you can also look at the example code provided for the PS GPIO (XPsGpio) as a guide to writing your application code.

     

    -Gary

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  • 0

    You can have up to 64 PS (Processor System) GPIO connected to the PL (Programmable Logic) section via EMIO.

     

    There is a one bit example in the ZedBoard Zynq Concepts Tools and Techniques tutorial (chapter 3) that will give you the basics on how to enable the PS GPIO via EMIO: http://zedboard.org/support/design/1521/11

     

    In the tutorial case a constraints file is used to connect the signal to an external pin but you can just connect the signals to internal PL logic as well. Once you have exported your Vivado hardware design to the SDK and generated a BSP you can also look at the example code provided for the PS GPIO (XPsGpio) as a guide to writing your application code.

     

    -Gary

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