Send UDP packet from w5500 to PC failed!

Question

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? Thanks.

yaoliang0270 · Answer

Hi midnightcow, Thanks your reply. I checked my network config parameters, maybe my host ip and port info error. Now my prototype can work normal. Thanks & Best regards, Ken

Maksim · Answer

I decided not to create a new topic but unsubscribe here, I have exactly the same problem. Only this happens on power up. order of action such: pull the hardware reset (switch reset) Set soft reset RTR = 1000 RCR = 10 setSHAR setGAR setSUBR setSIPR socket (2, Sn_MR_UDP, 161, 0x00); // -----------

Maksim · Answer

Eugeny: Where’s the code waiting for socket open command completion? into function socket … setSn_CR(sn,Sn_CR_OPEN); while(getSn_CR(sn)); Where’s the code waiting for MR’s RST bit to reset after soft reset? hardware i wait 1 ms.

Eugeny · Answer

Maksim: How i know what socket open (UDP) command completion ? This one Maksim: while(getSn_CR(sn)); waits until command is accepted. Interrupt bits must indicate that command is completed. IMHO. Maksim: Where’s the code waiting for MR’s RST bit to reset after soft reset? hardware i wait 1 ms. After software reset perform checking of the RST bit (7) of MR register for zero, and only then proceed to chip programming.

Maksim · Answer

Eugeny: Interrupt bits must indicate that command is completed. IMHO. I add after while(getSn_CR(sn)); while(1) { tmp = getSn_IR(sn); if(tmp & Sn_IR_CON) { setSn_IR(sn, Sn_IR_CON); break; } //M:20131104 //else if(tmp & Sn_IR_TIMEOUT) return SOCKERR_TIMEOUT; else if(tmp & Sn_IR_TIMEOUT) { setSn_IR(sn, Sn_IR_TIMEOUT); return SOCKERR_TIMEOUT; } //////////// } But tmp always zero

Maksim · Answer

Eugeny: Did you operate Sn_IMR properly? I set Sn_IMR in 0xFF

lawrence · Answer

Hello, Maksim Did you get no packet from wireshark? If you have no packet, could you check Sn_IR[SENDOK] after commending Sn_CR[SEND] ? Before checking the Sn_IR, please set Sn_IMR. Thank you

Eugeny · Answer

Maksim: I set Sn_IMR in 0xFF SIR/SIMR?

Maksim · Answer

lawrence: Did you get no packet from wireshark? Yes. If I resend the packet after the timeout, I get a packet in wireshark. But I want to figure out what I’m doing wrong. lawrence: If you have no packet, could you check Sn_IR[SENDOK] after commending Sn_CR[SEND] ? I used the official library. Inside the send function there is a check for Sn_IR [SENDOK], but I get Sn_IR_TIMEOUT. Eugeny: SIR/SIMR? SIR/SIMR=0xFF IR=0;