According below steps, i can’t send an UDP packet.
- Initialized W5500(set w5500 ip,port, host PC ip, port).
- Open w5500 upd socket.
- sendto() packet to host pc.
the result :failed send out the packet. the register value of IINCHIP_READ( Sn_IR(s)) is timeout all the time.
until I received a packet from PC host using receivefrom(), w5500 can send udp packet to host pc using Sendto() successfully.
PC firewall is disable. antivirus software is closed.
Has anyone meet this issue?