Hello everyone,
I'm trying to understand the packet format used by TinyOS when 802.15.4 MAC TKN
MAC layer is used.
1- Before, I know that TinyOS message format is : AMPacket | link source addr
| msg len | groupID | handlerID | source addr | payload
2- I found also that The CC2420 Packet structure is defined in CC2420.h. The
default I-Frame CC2420 header takes on the following format:::
typedef nx_struct cc2420_header_t {
nxle_uint8_t length;
nxle_uint16_t fcf;
nxle_uint8_t dsn;
nxle_uint16_t destpan;
nxle_uint16_t dest;
nxle_uint16_t src;
nxle_uint8_t network; // optionally included with 6LowPAN layer
nxle_uint8_t type;
} cc2420_header_t;
In which format packets are when I use TinyOS with TKN 802.15.4 ? is the first
one encapsulated in the second one ? or maybe one is used for data and the
second for 802.15.4 control messages (request, confirm ....) ?
I'll be very thankful if someone can lighten my mind :)
Regards,
Luis.
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