Thank you Sarah for reply,

1.Can you explain what you meant by type of connectivity? Ethernet I guess . Sending UDP messages from first NucleoF767 to second NucleoF767.

2.One socket for receiving and another for sending, but sending is working. What is limit?

3.Problem is in socket configuration I think. I am trying to receive UDP messages from broadcast IP and bind to specific port.

CODE EXAMPLE: const int PORT = 1234; example

EthernetInterface eth;

Thread thread;

void Receive(){ UDPSocket sock; SocketAddres addr;

sock.open(&eth); sock.bind(port)

char buffer[256];

while(1){ recvfrom(&addr ,buffer, sizeof(buffer)); } }

int main(){

thread.start(Receive); }

Result: getting -3003 error(invalid configuration) on opening socket or -3004(not connected to a network) on binding to port functions.

Daniel

Are both boards connected by ethernet to the same network? In your example, you have not connected the board to the network.

eth.connect() would accomplish that.

Yes, both boards connected to network with eth.connect() in main.

Can you please post the full code with proper formatting? You do it by surrounding your code with "<<code>>" "<</code>>"

Should I do it in comment or main post message?

The main message works.