TM4C1294NCPDT: LWIP Multicast

ygt ulk

Part Number: TM4C1294NCPDT

Tool/software:

Hello, does lwip support multicast?

I saw on the website the is a option for ;

lwip_multicast_tx_options but that is in the 2.1.0 version of the lwip.

Current one i am using is lwip-14.1 (one comes with tiva ware) has no option for this in lwipopts.h file

9 months ago

0 Charles Tsai 9 months ago

TI__Guru**** 191076 points

Are you looking for Layer 3 multicast or layer 2 multicast? I think EMAC module is configured to receive all broadcast and multicast as part of the EMAC intialiation.

For layer 2 multicast you can take a look at this post that may help. https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1036819/tm4c129xnczad-mac-layer-multicast-address-filtering?tisearch=e2e-sitesearch&keymatch=multicast#

For layer 3 multicast, if you have not found this mode to be supported in lwip-1.4.1 then it is not there. I will suggest you consult with lwIP forum about this topic as I have no experience with handling multicast traffic at this layer.

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TM4C1294NCPDT: LWIP Multicast