802.15.4 test Application:
1) Loopback in single qemu:
Enable CONFIG_NETWORKING_WITH_15_4_LOOPBACK config option in prj_x86/arm.conf
to test 802.15.4. By enabling this option dummy driver will feed sending
802.15.4 frames back to 15_4 Rx FIFO. 15_4 Rx FIFO will asseble all frames
and feed it to IP Rx FIFO.
2) Loopback between two qemus:
Enable CONFIG_NETWORKING_WITH_15_4_LOOPBACK_UART config option in
prj_x86/arm.conf to send 802.15.4 frames out through QEMU UART and receive
frames through QEMU UART.
Follow below simple steps to create fifos at host.
$ mkfifo /tmp/ip-15-4-1.{in,out}
$ ln /tmp/ip-15-4-1.in /tmp/ip-15-4-2.out
$ ln /tmp/ip-15-4-1.out /tmp/ip-15-4-2.in
Open two terminals and run two qemus with below options.
$ make qemu QEMU_NUM=1 CONFIG_NETWORKING_WITH_15_4_LOOPBACK_UART=y
$ make qemu QEMU_NUM=2 CONFIG_NETWORKING_WITH_15_4_LOOPBACK_UART=y
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