On 05 Oct 2012 13:17, Sajjad Safdar wrote:
Only a single process may have the USRP1 open at any one time, so you'll have to arrange your experiments that way. This has to do, at least partially, with the way USB device file descriptors work. > Hello, > I have tried as you suggested but it does not worked. I have attached a screen shoot as well. > > Best Regards, > SAJJAD SAFDAR > > ----- Forwarded Message ----- > FROM: Sajjad Safdar > TO: "discuss-gnuradio@gnu.org" > SENT: Wednesday, September 26, 2012 12:16 AM > SUBJECT: Fw: Using two daughter boards in USRP1. > > Hello, > I have read in your frequently ask questions that we may record data from two daughter boards in one USRP. But i have the same question but in different way. Can we use one daughter card as sender and the other as receiver, rather using two USRP for this purpose. > > Best Regards. > > ----- Forwarded Message ----- > FROM: Sajjad Safdar > TO: "discuss-gnuradio@gnu.org" > SENT: Thursday, September 20, 2012 6:46 PM > SUBJECT: Using two daughter boards in USRP1. > > Hello, > I am trying to use two daughter boards in one USRP1. I have RFX400 on one side A and TVRX on side B. > When i try to use two seprate terminals to test the daughter cards in such a way that RFX400 is transmitting and TVRX is recieving on the same USRP1 device using uhd_fft and benchmark_tx.py [1] for sending data, but this does not work. when i run uhd_fft the scanning works but when i try to run benchmark_tx in another window, it gives some error tha can not find usrp device, how can i make it possible to work with both cards on the same device rather than using two different devices. Links: ------ [1] http://benchmark_tx.py/
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