Stm32 control W5500 network chip, using UDP send data to the network, using network cable directly connected computers can communicate,
2. After switch, can only ping, but receive less than data,
3. Through the switch, the use of computers to send any data to the stm32 IP, at this point, the computers will be able to receive the stm32 udp data,
Excuse me everybody, this is probably the reason why? Thank you thank you

CodePudding user response:

Known conditions, possibility is too much,

CodePudding user response:

Change the port to try again?

CodePudding user response:

Ping is going to have the back, that is, ping request and reply; If the ping can pass, then the channel is general, also the UDP should be pass,