[Discuss-gnuradio] Re: USB2 problems with Fedora/USRP

[Alberto Trentadue]

> Hello
> 
...
> The next step is to try out some example, e.g. usrp_benchmark_usb.py or 
> usrp_wfm_rcv.py.
> Whatever 
the test I try, I can see that blinking led is switched of for a couple 
seconds, then it blinks at lower 
> rate, and 
another led near to it turns on  (don't remember which is D402 and D403).
> 
> On console, i get this kind of error:
> 

> usb_control_msg failed: error sending control message: Connection timed out
> usrp: failed to load fpga bitstream 
/opt/gnuradio/share/usrp/rev4/std_2rxhb_2tx.rbf
> Traceback (most recent call last):
>     File "./usrp_benchmark_usb.
py", line 106, in ?
>         main ( )
>     File "./usrp_benchmark_usb.py", line 96, in main
>         ok=run_test 
(rate, verbose)
>     File "./usrp_benchmark_usb.py", line 63, in run_test
>         usrp_tx=usrp.sink_s(0, tx_interp)

>     File 
> "/usr/local/hamradio/gnuradio/lib/python2.5/site-packages/gnuradio/usrp.py", 
> line 230, in __init__
>         
fpga_filename, firmware_filename)
>     File 
> "/usr/local/hamradio/gnuradio/lib/python2.5/site-packages/gnuradio/usrp1.
py", line 940, in  sink_s
>         return _usrp1.sink_s(*args)
> RuntimeError: can't open usrp1
...
====  Eric Blossom 
wrote 

>Confirm that your computer has an EHCI host controller.
...
=====

Hello

The PC has the EHCI host controller:


address@hidden usb]# lspci
...
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI 
Controller #2 
(rev 03)

Now, I've tried again launching the usrp_benchmark_usb.py and then
address@hidden usb]# cat 
/proc/bus/usb/devices
...
T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  7 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) 
Sub=ff Prot=ff MxPS=64 #Cfgs=  1
P:  Vendor=fffe ProdID=0002 Rev= 1.04
S:  Manufacturer=Free Software Folks
S:  
Product=USRP Rev 4
S:  SerialNumber=480f9a8a
C:* #Ifs= 3 Cfg#= 1 Atr=c0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 0 Cls=ff
(vend.) Sub=ff Prot=ff Driver=(none)
I:* If#= 1 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E:  Ad=02(O) 
Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E:  Ad=86(I) Atr=02
(Bulk) MxPS= 512 Ivl=0ms

It seems that I was wrong: USB2 driver seems to be working well, at least for 
the first 
configuration steps, because I am successful in configuring the Cypress FX2.
Then it looks like the problem is actually 
in the next step, that is, loading the fpga bitstream 
/usr/local/hamradio/gnuradio/share/usrp/rev4/std_2rxhb_2tx.rbf


So I have 3 questions:
1. What can I use to trace/debug/investigate the final fpga load operation? 
2. Where is the 
source code of the program performing the actual fpga load?
3. What does it mean that led D402 turns on during this?

t.
i.a. for help
Alberto



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