DE2 board USB communication

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...

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

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.

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????

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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.

--- Quote End ---

Implementing USB host mode without a processor is very difficult. USB was designed for a processor managing the host.

I'm not sure you would find a hardware-only USB-host core. Such a core would probably need almost as much resources as a NIOS II processor, possibly even more.

Actually, I need very very simple USB communication: I need to receive via USB just one byte of command for my design. My design then will do some actions and will respond via USB with a few bytes. I use VHDL for desing programming.

Which is the best way to realize this ? If I well understood, I must use Nios II processor with some kind of assembly programming to configure ISP1362 USB controller ?

Can I combine in one Quartus II project Nios II processor like a part of my design and VHDL programming for the rest of my desing?

Thank you for your time and effort,

Regards,

Bojan

--- Quote Start ---

If I well understood, I must use Nios II processor with some kind of assembly programming to configure ISP1362 USB controller ?

--- Quote End ---

The easiest is to use C code.

--- Quote Start ---

Can I combine in one Quartus II project Nios II processor like a part of my design and VHDL programming for the rest of my desing?

--- Quote End ---

Yes, you can!

Hello...

Now, i am doing my project to transfer image between host computer (PC) and FPGA DE2 Altera via USB and display it into monitor. I am still new in using NIOS II Processor. First, I try to buil project USB Device given in Altera CD-ROM (DE2_NIOS_DEVICE_LED.sof in DE2_Demonstrations folder). But, i found error when building project like below:

"The software setting (STF) file associated with this project is damaged. This may be fixed by copying your source files into new C/C++ application project. For more details see the error log."

What should i do? What is the meaning of copying source file into new C/C++ application project?

Thank you

what's the type of project that you created?

C/C++ ?

Thank you for the help,

I've found the problem: there is a space in my directory path. I have to rename my folder name so that there is no space anymore on my path directory.