UDP Multicast issues

[crustn]

Hi all,

for several days now, I'm trying to get my Teensy 3.2 to send and receive multicast UDP packets via the Wiz820io Ethernet module. I want to use my Teensy to communicate with my Mac over the network using ipMIDI from www.Nerds.de (Multicast IP address 225.0.0.37 and port 21928) but the communication doesn't work at all. I've written a testing sketch View attachment UDPmulticastTesting.ino
I've tried this sketch with my Arduino Uno and a modified Ethernet library (http://forum.arduino.cc/index.php?topic=150006.0) and it is working as expected. But no luck with the Teensy!! I tried a modified Teensy Ethernet library from this thread https://forum.pjrc.com/threads/42033-T3-6-amp-WIZ820io-Bonjour I also tired the original Arduino Ethernet library (deleting the Teensy one in the Arduino.app package) and the modified one for the Uno. Doesn't work either. DhcpAddressPrinter and the normal UDPSendReceiveString sketches ARE working with the Teensy, so there is no problem with the hardware.


PLEASE HELP!

Thanks
Stefan

 

[PaulStoffregen]

Get the latest from Github.

https://github.com/PaulStoffregen/Ethernet

Manitou made a patch recently to fix this. It's not in TD 1.35, but it is in this copy on github.

 

[crustn]

Hi Paul,

thank you so much. It is working now!!!! Perfekt.

cheers,
Stefan