Hi , I am integrating PROFINET stack code in my MQX 3.7 based code. can anbody help me to understand how we get raw ethernet frame. I want to send that raw frame directly to application code by bypassing TCP/IP stack.
Suhas, I'm just guessing now: Take a look at EtherType - Wikipedia . I see the EtherType of Profinet = 0x8892.The packet receiver could be examining the EtherType field in the MAC header and rejecting any non-TCP/IP frames [e.g 0x0800=IPv4, 0x0806=ARP]. So maybe try tracing backward from "MACNET_process_rx_bds() " or tracing forward from the MAC interrupt handler to determine if that's the case.
Can't answer in detail, but if there's no major differences between 3.7 and 4.2, the place to start looking is MACNET_process_rx_bds() in macnet_receive.c. Code in that function examines ethernet packets, determines if RTCS wants the packet [ ENET_find_receiver() ] and passes them into the stack if so. I'd guess you could graft your code somewhere in there.
Hi Fred thanks for input. We are working on the same line , For other Ethernet frames "MACNET_process_rx_bds() " gest triggered and then ENET_find_receiver() function gets called , but for PROFINET frame the Ethernet interrupt is not getting triggered and "MACNET_process_rx_bds() " function not getting called. Is there any setting to be enabled so that The "MACNET_process_rx_bds() " function gets called (Ethernet interrupt gets triggered )for PROFINET multicast packets.
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