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PS interrupt PL

raymadigan

I am working with some legacy vhdl components and I need to find a way to coordinate the PS and the PL.  Is there a way to send general interrupts from the PS to the PL.

I am using DMA interrupts from the PL to the PS, but haven't found a way to signal activity from he PS to the PL.  The main problem is the vhdl starts up immediately and files queues before the PS can get started. 

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    Hello Raymadigan,

    I see what you mean. You are trying to determine which is the Interrupt Parameter within SDK. I have two suggestions which may be of some help.

    1. Refer to the Zynq HW Speedways we have, specifcally lab 8. In lab 8, in SDK we use our interrupt parameter in SDK to run one of our applications. I just went and located the interrupt parameter in the xparameters.h file. I would imagine that it is in that file if everything was ported properly from Vivado to SDK.In my case it is called :  "#define XPAR_FABRIC_PWM_W_INT_0_INTERRUPT_OUT_INTR". So take another look in that file.  

    http://zedboard.org/course/developing-zynq%C2%AE-7000-all-programmable-soc-hardware-vivado-20133-201441-20152-and-20162

    2. If you can still not locate that Interrupt parameter located in that file, I have another suggestion. I ran into this issue when I was updating the labs above from Vivado 2015.2 to Vivado 2016.2. I was unable to locate that Interrupt parameter when I was porting over my hardware to SDK(same issue you are having). The cause of this issue in my case was in my Custom IP that I was creating in the IP Packager in Lab 7. My interrupt was labeled as undefined thus it was not passing to SDK properly. You can see how I corrected this by looking in Lab 7 Page 25 Step 16. 

    Hope this helps!

    --Josh

  • 0 in reply to jafoste4

    I really appreciate your help, thank you very much.

    I looked at the lab 8 and I think you meant lab 10.  That project sets up an interrupt service routine in the PS for an interrupt that occurs in the PL.  I need to go the other way.  I tried to find a similar reference to the GPIO interrupt IRQ_PTF_GPIO and can't find anything.  There is some magic somewhere and I am unable to figure it out.  

    I have search the xilinx forum and there are references to doing it, but nothing that will give me a clue to how to excite that interrupt.  There has to be a mask somewhere.

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  • 0 in reply to jafoste4

    I really appreciate your help, thank you very much.

    I looked at the lab 8 and I think you meant lab 10.  That project sets up an interrupt service routine in the PS for an interrupt that occurs in the PL.  I need to go the other way.  I tried to find a similar reference to the GPIO interrupt IRQ_PTF_GPIO and can't find anything.  There is some magic somewhere and I am unable to figure it out.  

    I have search the xilinx forum and there are references to doing it, but nothing that will give me a clue to how to excite that interrupt.  There has to be a mask somewhere.

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