W5500 Socket Creation successful but TCP Client Connect hanging Up STM

Question

Good day, I was hoping someone could possibly assist me. we have about 200 w5500 running as Servers which all work very well. however we have recently received a project that requires us to use the W5500 as a client and a server talking to one another vs just a server. attempting to connect after creating a socket completely hangs up the unit. if((ret = connect(SOCK_ID_TCP,__au8_DesIp,0x1E61)) == SOCK_OK); the problem appears to be with (getSn_IR(sn), creating an infinite loop. while(getSn_SR(sn) != SOCK_ESTABLISHED) // not here { if (getSn_IR(sn) & Sn_IR_TIMEOUT) // this is where the infinite loop is created. { setSn_IR(sn, Sn_IR_TIMEOUT); return SOCKERR_TIMEOUT; } } please see below procedure - int8_t connect(uint8_t sn, uint8_t * addr, uint16_t port) { uint32_t taddr; CHECK_SOCKNUM(); CHECK_SOCKMODE(Sn_MR_TCP); CHECK_SOCKINIT(); taddr = ((uint32_t)addr[0] & 0x000000FF); taddr = (taddr << 8) + ((uint32_t)addr[1] & 0x000000FF); taddr = (taddr << 8) + ((uint32_t)addr[2] & 0x000000FF); taddr = (taddr << 8) + ((uint32_t)addr[0] & 0x000000FF); if( taddr == 0xFFFFFFFF || taddr == 0) { return SOCKERR_IPINVALID; } if(port == 0) { return SOCKERR_PORTZERO; } setSn_DIPR(sn,addr); setSn_DPORT(sn,port); setSn_CR(sn,Sn_CR_CONNECT); while(getSn_CR(sn)); if(sock_io_mode & (1<<sn)) { return SOCK_BUSY; } while(getSn_SR(sn) != SOCK_ESTABLISHED) { if (getSn_IR(sn) & Sn_IR_TIMEOUT) { setSn_IR(sn, Sn_IR_TIMEOUT); return SOCKERR_TIMEOUT; } } return SOCK_OK; } please see below for full execution #include "Wizchip_Conf.h" #include “W5500.h” #include “Socket.h” sfr sbit Wizchip_Rst at GPIOC_ODR.B13; sfr sbit Wizchip_CS at GPIOA_ODR.B4; #define SOCK_ID_TCP 0 #define SOCK_ID_UDP 1 #define PORT_TCP_LOCAL 6000 #define PORT_TCP_REMOTE 6001 #define PORT_UDP 10001 #define DATA_BUF_SIZE 2048 char UartDebug; char bufferDebug[2048]; int D,I; unsigned short ReceivedDebug = 0,triggerTCP =0; uint8_t gDATABUF[DATA_BUF_SIZE]; uint8_t __au8_DesIp[4] = {192, 168, 0, 40}; volatile wiz_NetInfo gWIZNETINFO = { {0x00, 0x14, 0xA3, 0x72, 0x17, 0x3f}, // Source Mac Address {192, 168, 0, 177}, // Source IP Address {255, 255, 255, 0}, // Subnet Mask {192, 168, 0, 215}, // Gateway IP Address {192, 168, 0, 215}, // DNS server IP Address NETINFO_STATIC }; volatile wiz_PhyConf phyConf = { PHY_CONFBY_HW, // PHY_CONFBY_SW PHY_MODE_AUTONEGO, // PHY_MODE_AUTONEGO PHY_SPEED_100, // PHY_SPEED_100 PHY_DUPLEX_FULL, // PHY_DUPLEX_HALF }; volatile wiz_NetInfo pnetinfo; // brief Call back function for WIZCHIP select. void CB_ChipSelect(void) { Wizchip_CS = 0; } // brief Call back function for WIZCHIP deselect. void CB_ChipDeselect(void) { Wizchip_CS = 1; } // brief Callback function to read byte usig SPI. uint8_t CB_SpiRead(void) { return SPI_Read(0xAA); } // brief Callback function to write byte usig SPI. void CB_SpiWrite(uint8_t wb) { SPI_Write(wb); } static void W5500_Init(void) { // Set Tx and Rx buffer size to 2KB uint8_t buffsize[8] = { 2, 2, 2, 2, 2, 2, 2, 2 }; uint8_t sn2; int32_t ret; uint16_t size…

becky · Answer

client server SYN-> <-SYN, ACK ACK-> TCP connection is made through the above three processes. Guessing the information you sent me, The server does not send a SYN, ACK packet, but sends an RST packet. Is it correct that you are opening a TCP server from ip 192.168.0.40 and port 7777?