I have some question about ethernet. For example, in my application I need to send data from Core0 and receive on Core1. But if I initialize lwip on Core 0, and do same action on Core 1, I can see that sending operation on Core0 through sendto() return number sended bytes, but traffic analyzer (Wireshark) doesn't see this sent packet, but if I do sending operation on Core 1 (core which initialize lwip second time) then I see this packet in Wireshark. I tried not initialize lwip on Core1 (commenting function adi_lwip_Init() in adi_initialize.c) and I got next results: sending on Core0 goes success and packet falls into Wireshark, but listening on Core1 through the same socket is possible only if on Core0 ethernet listening thread works, i.e. I have double work on receiving operation for both cores, moreover if I'm not using receiving thread on Core0 (excluding it from execution) I can't thereafter receiving data in remaining listening thread on Core1. Search the reasons such behavior in source files for ethernet drivers for now doesn't help me. Maybe I do something wrong. If you know how to solve this problem, please, let me know.
For lwip settings I use static ip address, in my case 10.10.70.1 and port 7001. Sending and receiving goes through the same port on both cores, but I tried different ports - result is same.
I compiled part of my project on bf609 ez-kit board. I will send a file through private support. For client code you can use source code in ethernet_client. For reproduce my problems you need do next things:
1) Open Wireshark and start sniffing ethernet traffic on current interface
2) Open DSP project: in file ethernet_test_Core0.c set up breakpoint at line 133
and at line 138
int send_r = send(acc_sct, send_b, sizeof(send_b), 0);
in file ethernet_test_Core1.c setup breakpoint at line 131
int send_r = sendto(sockfd, send_b, sizeof(send_b), 0, (struct sockaddr *) &server_address, addr_len);
3) Start up DSP project
4) Open main.cpp file at any IDE (I used Qt Creator) and setup breakpoints at line 59
int socket_fd = eth_init(sock_addr, SOCK_STREAM, INET_ADDRESS, INET_PORT);
int sended_bytes = send(test_sock_fd, (void*) test_buffer, sizeof (test_buffer), 0);
5) Start up client project. After when code stops on first breakpoint - press Continue/Resume button in debugger. In CCES code stops at line 133 in ethernet_test_Core0.c file. You can see in Wireshark packet which was sent.
6) Press Resume button in CCES debugger - it will stop at first line in main() function for core_1
7) Press Resume again - code for core_0 stops at 138 line, core_1 will be in runtime
8) In client project you need to do step over - now core_1 stops at 131 line and you can also press step over button in CCES and see packet from core_1 in Wireshark window.
9) In CCES for core_0 you can now try send packet - send() return amount of sent bytes but you can't see this packet in Wireshark
But I need to do this action on core_0. That's my problem.
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I've got it.
Through private email they asked me about setup related information. Here it is:
Processor and Revision - ADSP - BF609 rev.2.0
Part number - ADZS-BF609-EZ-BRD
Hardware platform - ADSP-BF609-EZ-BOARD rev.1.0
Target Software - ethernet drivers
Development software - CCES 2.6.0
Host operating system - Windows 10, x64
Emulator Device - ICE 2000