Hi David,

On Wed, 2016-05-11 at 16:54 +0800, David.Dai(a)alitech.com wrote:

Hi sir,

I am porting cc2520 driver to arduino_due board, when sending udp
packet over cc2520. the packet is never transmitted by cc2520 driver.

I don't know if cc2520 driver has run correctly on any zephyr
platform? to debug, where should I focus on, cc2520 driver or zephyr
ip stack?

Try to activate some debugging in the cc2520 driver first.
Set CONFIG_TI_CC2520_DEBUG=y in your projects conf file.

If that shows that network packets are not sent, then you can start to
activate debugging options in the lower MAC stack and IP stack. See
various IP stack debugging options in net/ip/Kconfig.debug file for
details.


Cheers,
Jukka