Re: [Discuss-gnuradio] UHD driver/firmware stability

Hi Manuel,

On Jul 22, 2010, at 1:48 PM, Manuel Fuhr wrote:

Test case 03: Setting the maximum USRP2 sample rate (100M) doesnt work, it
switches to 25Msps.
That's because it's impossible to transfer 32-bit samples with 100Msps
over Gigabit (even without any overhead).

Why does the uhd benchmark_rx sample fail ? I haven't seen the UHD driver working till now, and documentation is very poor for a first time user.

I've spent USD$2000 (USRP2 + WBX) and still haven't been able to figure out how to get clear FM reception or the UHD driver up and running, and its been over a week now. If someone else has this setup running, please do let me know. At the very least, these units should have some working samples, just to get the hw configuration/setup issues out of the way, with a simple demo.

$ ./benchmark_rx_rate

Creating the usrp device with: ...

Current recv sock buff size: 50000000 bytes

Current send sock buff size: 50000000 bytes

Using: WBX TX (0x0053)

Using: WBX RX (0x0052)

RX samples per packet: 362

TX samples per packet: 363

Recv pirate num frames: 33967

Using Device: Simple USRP:

Device: usrp2 device

Mboard: usrp2 mboard0 - rev 4:0

RX DSP: usrp2 ddc0

RX Dboard: usrp2 dboard (rx unit)

RX Subdev: WBX TX (0x0053)

TX DSP: usrp2 duc0

TX Dboard: usrp2 dboard (tx unit)

TX Subdev: WBX RX (0x0052)

Testing receive rate 0.500000 Msps (10.000000 second run)