This example is using Dot v4.0.0 firmware and mPower 5.3.0 on Conduit
Enable addition of Type, DevAddr, FCnt and Port to HEX output of the data. Use AT+RXO=2 for ascii output instead of hexadeicmal.
AT+RXO=3
Packet output will contain a set of fields, Type is 1 byte, DevAddr is 4 bytes, FCnt is 4 bytes and Port is 1 byte. DevAddr and FCnt are presented in little endian order. The Data field is provided as received.
012f49daf00500000001090909
Type DevAddr FCnt Port Data
01 2f49daf0 05000000 01 090909
Enable output of unsolicited messages during the AT command session
AT+URC=1
Received packets will appear in the command output without needing to issue commands.
RECV 012f49daf00500000001090909
The last packet can be displayed with the AT+RECV command.
at+recv
012f49daf00500000001090909
OK
This setting controls the when the Session Setup packet will be queued for each end-device. Class A end-devices must send an uplink after this packet is queued to create the session needed for to authenticate and decrypt the multicast message payload.
This setting controls the time allowed for end-devices to retrieve the Session Setup before the multicast payload will be sent.
After setup time has expired and until launch time the Operation will be in Setup phase. After the setup phase ends the session will transfer to the Broadcasting phase and send the scheduled packet. The progress page shows the Operation and corresponding Multicast EUI.
The Session Setup can be seen below in the Class A uplink response. Port 200 (0xC8) is the multicast setup protocol port. There are two commands in this packet.
at+rxo
0
OK
at+rxo=3
OK
at+urc=1
OK
at+send
01231400000a000000c802002f49daf011fe3c120a78c11b4b769c52e45d21160000000000000000040011a2a84c0f68e28c0a
OK
at+send
OK
RECV 012f49daf003000000017777
RECV 012f49daf004000000018888
RECV 012f49daf00500000001090909
The multicast packet is shown broken in to each command and corresponding fields.
Type DevAddr FCnt Port Payload
01 23140000 0a000000 c8 02002f49daf011fe3c120a78c11b4b769c52e45d21160000000000000000040011a2a84c0f68e28c0a
MC Group Setup Req
MC ID DevAddr Encrypted Key FCnt Start FCnt End
02 00 2f49daf0 11fe3c120a78c11b4b769c52e45d2116 00000000 00000000
MC Class C Session Req
MC ID Start Time Timeout Freq DR
04 00 11a2a84c 0f 68e28c 0a
Additional messages can be sent to the end-devices in the session using the downlink queue. Queue packets to the Multicast EUI.
