Composes the identifier of a J1939 broadcast, which every node on the bus reads.
Most parameter groups are broadcast, so this is the common case; it saves a caller knowing that a broadcast is addressed to 0xFF.
0xFF
The message priority, 0 (highest) to 7.
The parameter group number.
The address of the sending node.
The 29-bit identifier.
Composes the identifier of a J1939 broadcast, which every node on the bus reads.
Most parameter groups are broadcast, so this is the common case; it saves a caller knowing that a broadcast is addressed to
0xFF.