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communication via USB Uart pmod

Former Member

Hi!
I have this project were I have to make a communication like that:
PC communicates with a device (oscilloscope, printer, whatever..) via USB port, but between this communication I have a zedboard that sends all the data from/to the PC to/from the device.
I want to make a system that will work like an USB analyzer device. I want the zedboard to be a part of the communication system but not be recognized from the pc and the device. The two devices mast not u201Cseeu201D the zedboard.

I want to use digilent USBUART pmods.  My problem is that I canu2019t connect the oscilloscope with the zedboard, and more important I donu2019t know how to make the communication, so that the pc will recognize the oscilloscope despite the presence of the zedboard. I thought that if I was sending from the zedboards uarts the proper usb protocol packets for attaching the host to the device would be enough but itu2019s more complicated than that.
Any advises on how to do that? Can someone guide me?

I donu2019t want to use the USB u2013 OTG port for this project.

  • 0

    Hello,

     

    I don't know how you would be able to 'hide' the ZedBoard from your host PC if you want to use a USB-UART device, either the one already on the ZedBoard or a USBUART PMOD, as you will need to load the driver for the USBUART on your host PC to be able to use the port.

     

    You don't mention what type of interface your oscilloscope has, but if it is USB you will need to determine if it is acting as a 'host' or 'device'. If it is a device then you will need to use the USB-OTG port as the USBUART port is acting as the 'device'. If it is acting as a USB 'host' you will need to be able to install a driver to use the USBUART PMODE as a device to it.

    If the oscilloscope interface is not USB you will need to provide more information on this port and what you are trying to accomplish.

     

    -Gary