[Discuss-gnuradio] Program FPGA

[Sabu]

Hello friends,

 

I(sabu) made debute to USRP & GNUradio build-trials 2 days back.

I have three querries... viz. A, B, & C, as mentioned after the environment observations given below

 

My environment is :

            O.S    ::    Ubuntu 7.04 Feisty fawn (Free CD distribution alongwith "Linux For You" magazine in India)

            CPU  ::     Core2 DUO Intel

            gcc    ::     4.2.0

            SWIG ::    1.3.31

Build references used are ::  

                             http://gnuradio.org/trac/wiki/UbuntuInstall

                             http://www.nd.edu/~jnl/sdr/docs/tutorials/  

 

 Observed that the 3 commands towards the end of the UbuntuInstall - viz

    1    ../benchmark_usb.py
    2   ./test_usrp_standard_tx      
    3   ./test_usrp_standard_rx

require a power-cycling (OFF-ON) after executing any one command.

Otherwise the second command returns an error

[failed to find usrp(0)] as shown in the relevant log-file below:

address@hidden:/home/sabu/GNUradio/gnuradio-3.0.3/gnuradio-examples/python/usrp# ../benchmark_usb.py

Testing 2MB/sec... usb_throughput = 2M

.......

OK

Testing 4MB/sec... usb_throughput = 4M

..........

OK

Testing 8MB/sec... usb_throughput = 8M

..........

OK

Testing 16MB/sec... usb_throughput = 16M

..........

OK

Testing 32MB/sec... usb_throughput = 32M

..........

OK

Max USB/USRP throughput = 32MB/sec

 

address@hidden:/home/sabu/GNUradio/gnuradio-3.0.3/gnuradio-examples/python/usrp#

address@hidden:/home/sabu/GNUradio/gnuradio-3.0.3/usrp/host/apps# ../test_usrp_standard_tx

usrp: failed to find usrp[0]

die: lt-test_usrp_standard_tx: usrp_standard_tx::make

address@hidden:/home/sabu/GNUradio/gnuradio-3.0.3/usrp/host/apps# ../test_usrp_standard_rx

usrp: failed to find usrp[0]

die: lt-test_usrp_standard_rx: usrp_standard_rx::make

####### Power off & power ON usrp ###############

address@hidden:/home/sabu/GNUradio/gnuradio-3.0.3/usrp/host/apps# ../test_usrp_standard_tx

xfered 1.34e+08 bytes in 4.02 seconds. 3.336e+07 bytes/sec. cpu time = 0.232

0 underruns

address@hidden:/home/sabu/GNUradio/gnuradio-3.0.3/usrp/host/apps# ../test_usrp_standard_rx

usrp: failed to find usrp[0]

die: lt-test_usrp_standard_rx: usrp_standard_rx::make

####### Power off & power ON usrp ###############

address@hidden:/home/sabu/GNUradio/gnuradio-3.0.3/usrp/host/apps# ../test_usrp_standard_rx

xfered 1.34e+08 bytes in 4.02 seconds. 3.336e+07 bytes/sec. cpu time = 0.184

noverruns = 0

--------------------------------------------------------------------------------------------------------------------------------------

I am able to view "USRP Rev 4" on 'usbview'  tool-window, and the second green LED is blinking every Second..!!

The other LED (2Hz ON-OFF at power on) remains off. Did anyone came across a similar problem.?

 

Querry A : How do I get rid of power-cycling, in order to accept second command to USRP?

 

Also observed in clause 2.4 of "Tutorial 4" at http://www.nd.edu/~jnl/sdr/docs/tutorials/4.html that

"............When a USRP application starts, the USRP will load two files from the directory

/usr/local/share/usrp/rev2: usrp_firmware.ihx and usrp_fpga.rbf. The blinking LED

should slow down to 1Hz (once a second) after the usrp_firmware.ihx file was loaded successfully..."

 

However, these files were not present at the said node. Instead 4 other files were present in ../rev2 &  ../rev4 nodes.

Querry B :How do I get usrp_fpga.rbf and usrp_firmware.ihx, if they are needed?

 

It also says subsequently that, to listen to FM stations, we can connect a speaker to the sound card and insert a piece of

wire to the RX-A connector and then run the example command: "sudo ./wfm_rcv_gui.py 101.5."

Querry C: Where do I get  wfm_rcv_gui.py ? If it is no more valid, what is the equivalent substitute?

 

Please extend your helping hand...(I am in a ditch.!)

 

best regards

K N Sabu

C-DAC Trivandrum - India.

 

----- Original Message -----

From: S Mande

To: address@hidden

Sent: Wednesday, July 25, 2007 4:34 AM

Subject: [Discuss-gnuradio] Reprogram FPGA

Hi,

 

 

I am looking at the possibility of reprogramming the existing firmware inside FPGA.

______________________________________
Scanned and protected by Email scanner