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TM4C129EKCPDT: UDP packet in LWIP stack

Bharath Raj
Intellectual 265 points
Part Number: TM4C129EKCPDT


1. If UDP data is sent to the client(TM4C129) but the client is busy executing something else(Higher priority interrupts), how long will the data be available to read in case of using LWIP ? (sending UDP packect is also from a TM4C129 board using LWIP)

2. Also, what happens if a second packet is sent before the first one is read, is the first one lost and the next one sitting there waiting to be read?

  • 0
    TI__Guru 72500 points
    I am certainly no expert in this area (experts out there, help me if I am wrong) but I think the answer depends on the number of number of UDP PCB blocks defined in lwipopts.h. Once all available PCB are filled, incoming UDP blocks are ignored.