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Avnet Boards General USB-to-UART Recognition Issue Windows 7
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Related

USB-to-UART Recognition Issue Windows 7

Former Member
Former Member over 13 years ago

Recently I received my ZedBoard after a long decision process I went through for choosing a development board. My intentions are to use it mostly for hardware design and yes it has a interesting smell (reminds me of soy-sauce).
My problem occurs when using the usb-uart bridge to communicate via terminal program. I connected the micro usb cable from J14 to my computers usb port several times like in the GettingStartedGuide p.11/p.12 described, but the drivers are not automatically installed by win7. So I manually installed the drivers like in the cypress CY7C64225 usb-to-uart setup guide described (several times), but the device is not recognized. The only way the drivers are automatically  installed correctly on the win7 machine and a serial connection can be obtained through the terminal software, is when a powered monitor is connected to the vga connector.
Can anyone tell me what I am doing wrong here or do I allways have connected a monitor to the ZedBoard to communicate via the cypress device?

thanks and regards
pkarch3000

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  • Former Member
    0 Former Member over 11 years ago

    There are two micro USB connectors on the Zedboard, J14 for the USB-UART and J17 for the USB JTAG connection. Make sure that you are connecting your USB cable from your Windows 7 machine to J14 for the UART connection and then turn the board on.

     

    -Gary

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  • Former Member
    0 Former Member over 10 years ago in reply to Former Member

    now im implementing pure fpga logic on zedboard, however i dont know how to set the pins through the J14,it seems j14 doesnt appear.Where should i place the uart pins?Thanks alot!

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  • Former Member
    0 Former Member over 10 years ago in reply to Former Member

    now im implementing pure fpga logic on zedboard, however i dont know how to set the pins through the J14,it seems j14 doesnt appear.Where should i place the uart pins?Thanks alot!

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  • Former Member
    0 Former Member over 10 years ago in reply to Former Member

    J14 on the ZedBoard is directly connected to the Cypress CY7C64225 USB UART device and is not available to the Zynq Programmable Logic (PL) section. The ZedBoard schematic can be downloaded here: http://zedboard.org/support/documentation/1521

     

    If you want to implement a UART in the PL you will need to select device pins connected to one of the PL PMOD interfaces or the LPC interface. Likewise, if you want to use one of the Zynq Processing Section (PS) UARTS via the PL you will need to select 'EMIO' as the output connection and route via the PL to a PMOD or LPC connection.

     

    -Gary

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