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Altera_Forum
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17 years ago

DE2 board USB communication

Hello people,

I'm curious to know is there anyone who have experience with DE2 board USB communication ?

There is some ISP1362 USB-OTG controller which must be appropriate configured in order to communicate with USB device plugged into DE2 USB connector.

Does anybody worked with this controller using VHDL programming language ?

Is there a lot of problem to configure ISP1362 USB-OTG controller ?

Thank you very much,

Bojan

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  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    hello

    I am now working in a project which needs to make the DE2-70 board as a USB device and the host is the PC.

    I write some codes in vhdl to communicate with the ISP1362, because I can not to use the NIOS processor...

    When I try to probe the system, I found these problems:

    1) If I connect both the blaster cable and the device cable to the pc or only the blaster, the host

    shows initially the blaster, then I download the firmware to the FPGA and the system do the Enumeration and initialization

    process and the ISP1362 is recognize by the host PC. But, if I disconnect the blaster cable, the system

    is not respond, then I reset the driver by the firmware and the device is doesn't show by the host.

    I am using the VISA USB Raw of National Instrument and its driver in the host.

    2) If I work with both the blaster cable and the device cable connected, the system can transmit data

    from PC to device successful, but when I try to send data from device to host PC, it show me a timeout error. I check the firmware step by step and it apparently work correctly.

    Could you help me with these????
  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    Hi Koce,

    to build up your USB communication you will have to configure your Philips ISP1362 USB-OTG controller from your VHDL code. Given that a simple Nios-II only takes a few procent of the Logic Elements on your DE2, it is probably the easiest to realize your USB communication via a Nios processor and using a JTAGUART.
  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    Thank you anyway...

    But there is no visible code for this examples, and USB

    controller is configured using Nios II processor. I want to use VHDL to configure controller.

    Regards,

    Bojan
  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    There are a number of ways that you can communicate via USB on the DE2 board.

    1. You can set up a Nios-II architecture in SOPC and add a JTAGUART. You can use the JTAGUART to communicate from the Nios-II to your PC

    2. On the CD-ROM that goes with the DE2 there is an example DE2_USB_API in the "DE2_emonstrations" Folder.

    3. See the DE2_UserManual.pdf section 4.14 "Using USB Host and Device".
    Hope this helps...