Receive multicast packets with AT + CIPSTART

akarg96
Posts: 1
Joined: Wed Nov 27, 2019 2:49 am

Receive multicast packets with AT + CIPSTART

Postby akarg96 » Thu Feb 13, 2020 6:20 am

I have a question about UDP multicast.
Execute AT + CIPSTART = "UDP", "192.168.0.2", 0, 12345, 2 and OK will be displayed on the serial monitor. When I send UDP packets with PacketSender, + IPD, 5, hello is displayed.
When AT + CIPSTART = "UDP", "239.192.1.2", 0, 12345, 2 is executed, the serial monitor displays OK, and it is considered that the socket was correctly created. However, the PacketSender does not display + IPD when sending UDP packets to a multicast address.
Does AT firmware not support multicast?
Also, I don't want to use AT + MDNS.

I use google translation.
Thank you.

Helen L
Posts: 44
Joined: Thu Aug 16, 2018 9:07 am

Re: Receive multicast packets with AT + CIPSTART

Postby Helen L » Thu Feb 13, 2020 11:19 am

It seems that ESP32 AT does not support multicast for now, maybe it should be added in the future.

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