Hi Folks, Finally getting around to playing with some of the stuff in gr-extras.
Having compiled 3.6.2, and the extras, I found the tuntap block, and was hoping to use it to implement some RF Networking with the GMSK modules. I found the tuntap block, and noticed that it had an input and output. I was expecting my flowgraph to take the userspace end of the network interface, with the other end being the network device. I found the presentation from the recent conference on a basic MAC layer, and that seemed to imply the input could be almost anything, but didn't leave me any the wiser as to exactly how to use it. What I was hoping to do was essentially this (and a similiar) RX chain: tuntap --> packet framer --> GMSK_Mod --> USRP But the input to the tuntap block has confused me. Can I just give it a Null source ? (With the block picking up data from the network device ?) Also, even when connecting it to a source, I seem to have another issue, as I get this error at runtime: RuntimeError: gr_make_tuntap: tun_alloc failed Despite having the /dev/net/tun device, and it being writable by the user running the flow graph. This happens if I specify "Automatic" or a specific network device. Anyone want to point me in the right direction ? Or even anyone have an example ? Best Regards Iain _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
