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[Discuss-gnuradio] N310-B210 TUN/TAP Transmit and Receive Simultaneously
From: |
Ramazan Çetin |
Subject: |
[Discuss-gnuradio] N310-B210 TUN/TAP Transmit and Receive Simultaneously |
Date: |
Fri, 25 Jan 2019 15:25:27 +0300 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 |
Hi all,
I am trying to setup a communication system which uses OFDM and TUN/TAP
interface. My OFDM is working good. I used rx_ofdm and tx_ofdm examples
and combined them. I transmitted files without errors from N310 to B210
and B210 to N310.
But when i use the TUNTAP interface instead of file transmission, i can
send ping (ARP packets) from N310 to B210. But i cannot send from B210
to N310. Red LED blinks on TX of B210, so it releases packet. Also, i
can see the packet from N310's RX side using QT Time scope. But it
cannot be resolved on N310. The USRP log on N310 when B210 send each ARP
packet:
INFO: Detected an invalid packet at item 241776
INFO: Parser returned #f
When i remove the USRP source from B210 flowgraph, B210 can send ping to
N310. (I can observe it from wireshark) So, i though problem can be
related simultaneous transmission and reception. What can be problem?
Any suggestion is appreciated. Thank you.
The flowgraphs for N310 and B210 are attached.
Best regards.
ofdm_tx_n310_tuntap_with_rx.grc
Description: Text Data
ofdm_rx_b210_tuntap_with_tx.grc
Description: Text Data
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Ramazan Çetin <=