Re: [Discuss-gnuradio] USRP drivers/test code

[Stein Erik Ellevseth]

Hi

I am following this discussion with great interest.

GnuRadio discussion should not be limited to the use of the USRP board. In
fact, it would be useful if the software related direct to the use of usrp
is separated into general USB and specific usrp. If the usrp software (usrp,
gr-usrp) could be generalized to support other USB implementation in
addition to USRP. I have no contributions so far, only found that there is a
need for using GnuRadio based on other boards than USRP.

We are a group of five hams working on an SDR project based on KD7O's "A
High-Performance Digital-Tranceiver Design. We have built a USB board
including the Cypress FX2, same USB chip used on USRP which we are now
testing.

Therefore we welcome this discussion in [Discuss-gnuradio], and
contributions like the one below.

73,
stein erik/LA7OU

on 27-09-05 16:31, Larry Doolittle at address@hidden wrote:

> Kalen and lurkers -
> 
> On Tue, Sep 27, 2005 at 04:22:18PM +0200, Kalen Watermeyer wrote:
>> I'm trying to re-use the USRP code (where I can) for my own SDR device
>> which also uses the FX2 chip. I've managed to install the GnuRadio onto
>> my Debian system and have built the USRP source code.
> 
> I do this also.  It took a while to understand what's going on.
> 
>> When I run the usrp-0.8/host/apps/test_usrp_standard_rx executable I get
>> an 'usrp[0] device not found'
>> 
>> I realise that I've probably left off a thousand steps, but am a little
>> confused as to how to get things in order.
>> 
>> Firstly, how do I ensure that the appropriate usb driver(s) are
>> associated with my usb device when I connect to the system?
> 
> Here is the outline of a few steps:
>   1. Assign yourself a USB product ID in the space defined by
>      firmware/include/usrp_ids.h, and get the USRP developers to
>      acknowledge it.
>   2. Hack host/lib/usrp_prims.cc to accept your PID in addition
>      to the normal USRP ones.
>   3. Program the FX2 EEPROM to your product ID using usrper i2c_write.
>   4. Add a usermap file and initialization script to /etc/hotplug/usb/.
> 
>> Secondly, is it feasible to modify existing FX2 firmware to my own needs
>> for testing purposes? (as my FPGA/electronic setup are obviously very
>> different from the USRP)
> 
> Absolutely.  You can use a slightly modified usrper and
> test_usrp_standard_rx to get yourself going until you build
> your own customized executable from the libraries.
> 
> I suggest we take this discussion off-list, and maybe collaborate
> on a web page summarizing the process.
> 
>       - Larry
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