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Avnet Boards General Trying to get off the ground
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Trying to get off the ground

Former Member
Former Member over 12 years ago

I've downloaded and installed the Vivado 2013.2 release. It loads up but I can't do the Speedway initial training because it doesn't let me add an "Embedded Source" to the project.

I've run the Speedway thing with PlanAhead and it fails with the unable to load qvirtex6 error. I'm running 14.4 of XPS, downloading the 14.5 update.

How can I debug what is going wrong?
--Chuck

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  • Former Member
    0 Former Member over 12 years ago

    That is a great document James (I'm assuming you mean this one: http://www.xilinx.com/support/documentation/sw_manuals/xilinx14_3/ug873-zynq-ctt.pdf

    The Speedway tutorial which I was following is targeted to the Zedboard directly, rather than the ZC702 board. And it mentions a 'Digilent cable' whereas in the Zedboard the implication is that just connecting the micro-USB connector marked "JTAG" to your PC is sufficient as it offers the equivalent of the Digilent interface.

    Other than that, the first tutorial is very similar in UG873 to the Speedway one. And I have gone through running PlanAhead, getting a project set up, configuring (in their tutorial) UART1 and memory, and then kicking off the SDK with the generated System BSP.

    All of that works, and bringing in Hello World works and it builds fine and there are no errors when it finishes.

    The Cypress USB UART (the second Micro-USB cable) shows up as COM17 in my case as nominally expected.

    The issue comes when I go through Run Configurations -> and set up the Xilinx C/C++ config for Standalone. And say then click the button "Run on board".

    Everything up to that point looks exactly like the tutorial, the screen is correct, I get the same values, everything.

    It pauses for a while and then says "Cannot access JTAG" (I don't have the exact thing it says handy but can add it this evening).

    My speculation (aka my best guess) at this point is that the software is not recognizing the Digilent JTAG connection. I was hoping to compare with someone who had this working, in particular what their Windows machine reported in the Devices panel when the usb cable is attached to the JTAG port.

    In my case it reports "Digilent USB Device" and if I right click and get the properties it reports that it is using an FTDI driver. If that is the same as what others see where it does work, I can mark that as not an issue and continue trying to debug it.

    Thanks again for the pointer to UG873! I've been reading all of the documentation I can find on the Zynq and while it is dense and often self contradictory, I feel like I am developing an understanding of what it is trying to communicate.

    --Chuck

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  • Former Member
    0 Former Member over 12 years ago

    That is a great document James (I'm assuming you mean this one: http://www.xilinx.com/support/documentation/sw_manuals/xilinx14_3/ug873-zynq-ctt.pdf

    The Speedway tutorial which I was following is targeted to the Zedboard directly, rather than the ZC702 board. And it mentions a 'Digilent cable' whereas in the Zedboard the implication is that just connecting the micro-USB connector marked "JTAG" to your PC is sufficient as it offers the equivalent of the Digilent interface.

    Other than that, the first tutorial is very similar in UG873 to the Speedway one. And I have gone through running PlanAhead, getting a project set up, configuring (in their tutorial) UART1 and memory, and then kicking off the SDK with the generated System BSP.

    All of that works, and bringing in Hello World works and it builds fine and there are no errors when it finishes.

    The Cypress USB UART (the second Micro-USB cable) shows up as COM17 in my case as nominally expected.

    The issue comes when I go through Run Configurations -> and set up the Xilinx C/C++ config for Standalone. And say then click the button "Run on board".

    Everything up to that point looks exactly like the tutorial, the screen is correct, I get the same values, everything.

    It pauses for a while and then says "Cannot access JTAG" (I don't have the exact thing it says handy but can add it this evening).

    My speculation (aka my best guess) at this point is that the software is not recognizing the Digilent JTAG connection. I was hoping to compare with someone who had this working, in particular what their Windows machine reported in the Devices panel when the usb cable is attached to the JTAG port.

    In my case it reports "Digilent USB Device" and if I right click and get the properties it reports that it is using an FTDI driver. If that is the same as what others see where it does work, I can mark that as not an issue and continue trying to debug it.

    Thanks again for the pointer to UG873! I've been reading all of the documentation I can find on the Zynq and while it is dense and often self contradictory, I feel like I am developing an understanding of what it is trying to communicate.

    --Chuck

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