Problem with USRP and two RFX2400 daughterboards


#1

Hello everyone,

maybe someone can help me with this:

I try to use two RFX2400 simultaneously, one for TX and the other for
RX. Is this possible?

Running the script usrp_benchmark_usb.py failed with two RFX2400 but
worked fine with one or none.

That’s what i get:

Testing 2MB/sec… usb_control_msg failed: error sending control
message: Protocol error
fusb: (rd status -71) Protocol error
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
usb_control_msg failed: error sending control message: Protocol error
usrp_basic_rx: set_rx_enable(false) failed
fusb: (status -71) Protocol error
_reap: usb->status = -71, actual_length = 0
_reap: usb->status = -71, actual_length = 0
_reap: usb->status = -71, actual_length = 0
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
_reap: usb->status = -71, actual_length = 0
_reap: usb->status = -71, actual_length = 0
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
_reap: usb->status = -71, actual_length = 0
_reap: usb->status = -71, actual_length = 0
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
_reap: usb->status = -71, actual_length = 0
uUfusb: (status -71) Protocol error
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error
uUfusb: (status -71) Protocol error
fusb: (status -71) Protocol error
fusb: (status -71) Protocol error

best regards
Dirk Fortmeier