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Altera_Forum's avatar
Altera_Forum
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15 years ago

USB and DE0 eval board

Hi all,

i've two questions about usb communication with the terasic eval boards.

1) I wonder if it is possible to use the integrated USB blaster on the DE0 eval board to send data back to the host, and if how? Is there anything that works out of the box?

2) If this is not possible to send something back via usb with the DE0, i consider getting the DE2, but as far as i found out the only options here is that i use the NIOS softcore processor to handle the protocol. Is there any other out-of the box solution provided by altera? Something like a FIFO interface (as seen here: /slscorp.com/pages/ipusb20hfsls.php) for receive and send would be nice to have...

hope someone can give some advice here..

thx in advance,

xiaoT

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    --- Quote Start ---

    try searching for JTAG UART

    --- Quote End ---

    Ok, i now figured out that the "USB" on the DE0 board is only for JTAG/flash use. In the schematics i could see that the usb blaster is actually realized with an FT245BM. So, ok seems no really useful fast usb transfer with the DE0 board.

    In our design, we would like to have smth like a fifo-usb interface, if possible even without instantiating a whole nios-ii soft processor.

    So my question still is, is this possible with the DE2 board, or is it necessary to purchase a dedicated usb ip core? And from the pc side, does it work with libusb?

    thx a lot,

    xiaot
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    it seems like a lot less headache to buy/build a module with an FTDI chip on it and plug it into the dev kit's header. i don't know about libusb, but the FTDI chips are easy to write code for.

    though i do understand the desire to use the existing USB interface
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Hello I am new in Forum, I have problem whith USB Blaster, after 6 months it broken, I buy a new one, how I can do for repearing, or where I can send for repearing???, is possible to fine a drawing, for repearing my self??

    Thanks in advance

    regards

    Maurizio
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Hi there,

    Thx for your answers again. i now did an USB extension board using the cypress FX2 ezusb controller for the communication tasks.

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