While I can receive packages at the rx end, the n_right field of every package is always 0. I know it means the package failed the CRC check. What might be the cause? I am using two USRP N210s and daughter boards are XCVR2450. The following are the displayed message at rx end:
address@hidden:~/Desktop/gnuradio/gr-digital/exales/narrowband$ ./benchmark_rx.py -f 2.41G
linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-128-g12f7a5c9
>>> gr_fir_ccf: using SSE
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 1472 bytes
UHD Warning:
Unable to set the thread priority. Performance may be negatively affected.
Please see the general application notes in the manual for instructions.
EnvironmentError: OSError: error in pthread_setschedparam
No gain specified.
Setting gain to 49.500000 (from [0.000000, 99.000000])
UHD Warning:
The hardware does not support the requested RX sample rate:
Target sample rate: 0.050000 MSps
Actual sample rate: 0.195312 MSps
Symbol Rate: 25000.000000
Requested sps: 2.000000
Given sample rate: 195312.500000
Actual sps for rate: 7.812500
Requested sample rate: 50000.000000
Actual sample rate: 195312.500000
Warning: Failed to enable realtime scheduling.
Using Volk machine: avx_32
ok = False pktno = 65 n_rcvd = 1 n_right = 0
ok = False pktno = 67 n_rcvd = 2 n_right = 0
ok = False pktno = 68 n_rcvd = 3 n_right = 0
ok = False pktno = 69 n_rcvd = 4 n_right = 0
ok = False pktno = 70 n_rcvd = 5 n_right = 0
ok = False pktno = 71 n_rcvd = 6 n_right = 0
ok = False pktno = 72 n_rcvd = 7 n_right = 0
ok = False pktno = 73 n_rcvd = 8 n_right = 0
ok = False pktno = 74 n_rcvd = 9 n_right = 0
ok = False pktno = 75 n_rcvd = 10 n_right = 0
ok = False pktno = 76 n_rcvd = 11 n_right = 0
ok = False pktno = 189 n_rcvd = 12 n_right = 0