R309 AT Commands
©2015 Telegesis (UK) Ltd - 42 - AT Command Manual (Rev 3.09)
+BCAST – Transmit A Broadcast
AT+BCAST:nn,<data>
Example
AT+BCAST:00,Hello world
Note
Use broadcasts sparingly! The ZigBee
specification only allows any node to repeat or
originate up to 8 broadcasts in every 8 second
interval. Broadcasts use a lot of bandwidth.
Use on:
All devices
Response
OK or ERROR<errorcode>
Where <errorcode> represents the error code
explained in section 3.
Parameters
nn ranging from 00 to 30
A maximum of 82 bytes are sent (with attached
EUI only 74 bytes). The response OK shows
successful transmission. Successful
transmission does not guarantee successful
reception. To make sure data has been
received by a specific node use a unicast
message. Only neighbours which are up to nn
hops away will receive the broadcast. If nn = 01
only direct neighbours will receive the broadcast
and if n = 00 the entire network will (max. 30
hops).
BCAST:[<EUI64>,]<length>=<data>
or
BCAST:[<EUI64>,]<length>=<data>,
<RSSI>,<LQI>
Every node in the PAN which has received the
broadcast message will prompt the above
message where <EUI64> is the address of the
sender, <length> is the length of the payload
and <data> is the data which was attached to
the broadcast. The EUI64 is only displayed if it is
part of the network header (set bit 0 of S10 to
disable attaching the EUI64 to outgoing
messages). RSSI and LQI are shown if bit 6 of
S0F is set.
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