uint8_t flags
SDP flag byte; first byte actually sent.
uint8_t srce_port
SDP source port/CPU.
uint16_t length
Length (measured from flags field start)
uint8_t dest_port
SDP destination port/CPU.
uint16_t dest_addr
SDP destination address.
struct sdp_msg * next
Next in free list.
uint16_t checksum
Checksum (if used)
uint32_t data[ITEMS_PER_DATA_PACKET]
User data (272 bytes when no SCP header)
uint16_t srce_addr
SDP source address.
@ ITEMS_PER_DATA_PACKET
How many multicast packets are to be received per SDP packet.
@ LENGTH_OF_SDP_HEADER
Extra length adjustment for the SDP header.
An SDP message with purely data, no SCP header.