W5500 stuck on Socket Close Function - while( getSn_CR(sn) )

Question

Hello, I am using the W5500 chip as a module and connected it to the Nuvoton M032 chip. I checked the SPI connections. No matter what I do, I can’t get past the following line. The code keeps getting stuck on this line → while( getSn_CR(sn) ); This line is inside this function socket() → close() → while( getSn_CR(sn) ); For this reason, I cannot create a TCP Server or client application. When I examine the return value of this function, it gives the following values: 0x01, 0x02 and continues to give 0x01. Server Program: Hercules PC IP: 192, 168, 1, 106 Port: 7000 My codes are as follows. Thanks. Best regards. #include "main.h" #include "wizchip_conf.h" #include "socket.h" uint8_t WIZNET_SPI_Read_Byte(void) { /* Check SPI0 busy status */ while (USPI_IS_BUSY(SD_SPIx)); /* Read received data */ return (USPI_READ_RX(SD_SPIx) & 0xFF); } void WIZNET_SPI_Write_Byte(uint8_t data) { /* Write Byte */ USPI_WRITE_TX(SD_SPIx, data); /* Check SPI0 busy status */ while (USPI_IS_BUSY(SD_SPIx)); } uint8_t serverIP[4] = { 192, 168, 1, 106 }; uint16_t serverPort = 7000; int main(void) { SYSTEM_Initialize(); SPI_Init(SD_SPIx, SPI_CLK_FREQ); WIZNET_RESET_LOW(); Delay_ms(5); WIZNET_RESET_HIGH(); SPI_CS_High(); reg_wizchip_cs_cbfunc(SPI_CS_Low, SPI_CS_High); reg_wizchip_spi_cbfunc(WIZNET_SPI_Read_Byte, WIZNET_SPI_Write_Byte); uint8_t memsize[2][8] = { {2, 2, 2, 2, 2, 2, 2, 2}, {2, 2, 2, 2, 2, 2, 2, 2} }; uint8_t tmp; if(ctlwizchip(CW_INIT_WIZCHIP, (void*)memsize) == -1) { //myprintf("WIZCHIP Initialized fail.
"); LED_On(); while(1); } /* PHY link status check */ do { if(ctlwizchip(CW_GET_PHYLINK, (void*)&tmp) == -1) { //printf("Unknown PHY Link status.
", 1, 10); while(1); } } while (tmp == PHY_LINK_OFF); wiz_NetInfo netInfo = { .mac = { 0x2C, 0xF7, 0xF1, 0x08, 0x00, 0x9A }, // Mac address .ip = { 192, 168, 1, 31 }, // IP address .sn = { 255, 255, 255, 0 }, // Subnet mask .gw = { 192, 168, 1, 1 }, .dns = { 0, 0, 0, 0 }, .dhcp = NETINFO_STATIC }; wizchip_setnetinfo(&netInfo); wizchip_getnetinfo(&netInfo); while (1) { ret = socket(sn, Sn_MR_TCP, serverPort, 0x00); // STUCK HERE ! LED_On(); } } error1236×388 21 KB hercules765×670 41.9 KB setup1200×1600 318 KB

Eugeny · Answer

Prove that SPI communication functions properly by reading VERSIONR register and getting 0x01, 0x02, 0x03 and 0x04.

Eugeny · Answer

ClariceStarling: error1236×388 21 KB What is the value of sn here? Not the one you may think of, but real value reported by the MCU?

Eugeny · Answer

ClariceStarling: But this function returns 0x01 → chipVersion = getVERSIONR(); Then look at what is going on the bus when you perform this call. Did you select the right chip within the library?

ClariceStarling · Answer

Yes there is W5500. Its ok. image1013×392 19.6 KB

ClariceStarling · Answer

Oh my god what is this function? #include "main.h" #include "wizchip_conf.h" #include "socket.h" uint8_t WIZNET_SPI_Read_Byte(void); void WIZNET_SPI_Write_Byte(uint8_t data); uint8_t chipVersion = 0; int main(void) { SYSTEM_Initialize(); SPI_Init(SD_SPIx, SPI_CLK_FREQ); WIZNET_RESET_LOW(); Delay_ms(250); WIZNET_RESET_HIGH(); Delay_ms(250); SPI_CS_High(); reg_wizchip_cs_cbfunc(SPI_CS_Low, SPI_CS_High); reg_wizchip_spi_cbfunc(WIZNET_SPI_Read_Byte, WIZNET_SPI_Write_Byte); chipVersion = getVERSIONR(); while (1) { } } /** * @brief * @param * @retval */ void SYSTEM_Initialize(void) { General_Init(); } uint8_t WIZNET_SPI_Read_Byte(void) { /* Check SPI0 busy status */ while (USPI_IS_BUSY(SD_SPIx)); /* Read received data */ return (USPI_READ_RX(SD_SPIx) & 0xFF); } void WIZNET_SPI_Write_Byte(uint8_t data) { /* Write Byte */ USPI_WRITE_TX(SD_SPIx, data); /* Check SPI0 busy status */ while (USPI_IS_BUSY(SD_SPIx)); } this function cannot read the last byte ( chipVersion = getVERSIONR(); ) image1560×537 25.7 KB

ClariceStarling · Answer

I did but there is no change

Eugeny · Answer

If you’d do this (second thing I said) you’d know how getVERSIONR(); works for you, what it does, and where’s a problem.

ClariceStarling · Answer

Something feels wrong in the library. I think the SPI buffer is not being cleared. That’s why I cleaned it by reading after each sending process. uint8_t WIZCHIP_READ(uint32_t AddrSel) { uint8_t ret; uint8_t spi_data[3]; WIZCHIP_CRITICAL_ENTER(); WIZCHIP.CS._select(); AddrSel |= (_W5500_SPI_READ_ | _W5500_SPI_VDM_OP_); if(!WIZCHIP.IF.SPI._read_burst || !WIZCHIP.IF.SPI._write_burst) // byte operation { WIZCHIP.IF.SPI._write_byte((AddrSel & 0x00FF0000) >> 16); ret = WIZCHIP.IF.SPI._read_byte(); // ADDED WIZCHIP.IF.SPI._write_byte((AddrSel & 0x0000FF00) >> 8); ret = WIZCHIP.IF.SPI._read_byte(); // ADDED WIZCHIP.IF.SPI._write_byte((AddrSel & 0x000000FF) >> 0); ret = WIZCHIP.IF.SPI._read_byte(); // ADDED } else // burst operation { spi_data[0] = (AddrSel & 0x00FF0000) >> 16; spi_data[1] = (AddrSel & 0x0000FF00) >> 8; spi_data[2] = (AddrSel & 0x000000FF) >> 0; WIZCHIP.IF.SPI._write_burst(spi_data, 3); } WIZCHIP.IF.SPI._write_byte(0); // ADDED - WRITE DUMMY FOR READ (GENERATE SPI CLOCK) ret = WIZCHIP.IF.SPI._read_byte(); WIZCHIP.CS._deselect(); WIZCHIP_CRITICAL_EXIT(); return ret; } I can connect now! But a new problem arose. When I send data with the send function after the connection process, the data is sent only once. When I want to send it later, the send function returns the following value #define SOCKERR_SOCKSTATUS (SOCK_ERROR - 7) ///< Invalid socket status for socket operation. #include "main.h" #include "wizchip_conf.h" #include "socket.h" uint8_t WIZNET_SPI_Read_Byte(void); void WIZNET_SPI_Write_Byte(uint8_t data); uint8_t serverIP[4] = { 192, 168, 1, 106 }; uint16_t serverPort = 5002; uint8_t chipVersion = 0; uint8_t memsize[2][8] = { {2, 2, 2, 2, 2, 2, 2, 2}, {2, 2, 2, 2, 2, 2, 2, 2} }; uint8_t tmp; uint8_t sn = 3; uint8_t socketStatus = 0xFF; int8_t connectionStatus = -1; int32_t sendStatus = -1; uint8_t sendBuff[2] = {'S', 'A'}; int main(void) { SYSTEM_Initialize(); SPI_Init(SD_SPIx, SPI_CLK_FREQ); WIZNET_RESET_LOW(); Delay_ms(250); WIZNET_RESET_HIGH()…

Eugeny · Answer

ClariceStarling: When I want to send it later What does it mean “later”? What status the socket has when this “later” happens?

ClariceStarling · Answer

sorry for wrong explanation It sends data only once, but when I try to send it a second time, it gives the -7 error.

Eugeny · Answer

What is the socket status when you try doing it? May happen socket is already in the state when sending is not allowed/possible.

ClariceStarling · Answer

For this code socketStatus = 0; while (socketStatus != sn) { socketStatus = socket(sn, Sn_MR_TCP, serverPort, SF_TCP_NODELAY); } while (connectionStatus != SOCK_OK) { connectionStatus = connect(sn, (uint8_t *)serverIP, serverPort); } while (1) { socketStatus = getSn_SR(sn); sendStatus = send(sn, sendBuff, 2); if (sendStatus < 0) { LED_On(); } Delay_ms(500); }

Eugeny · Answer

Read about the flow described in the W5100 datasheet.

ClariceStarling · Answer

I use W5500 Did you mean this product? https://docs.wiznet.io/img/products/w5100/W5100_DS_V128E.pdf Which page i can read?

Eugeny · Answer

Chapter 5.

ClariceStarling · Answer

I read the relevant section, but I didn’t fully understand how to proceed. Can you give a hint?

ClariceStarling · Answer

I think problem solved There is a another SPI issue. I added another line (w5500.c) to READ function and problem solved. uint8_t WIZCHIP_READ(uint32_t AddrSel) { uint8_t ret; uint8_t spi_data[3]; WIZCHIP_CRITICAL_ENTER(); WIZCHIP.CS._select(); AddrSel |= (_W5500_SPI_READ_ | _W5500_SPI_VDM_OP_); if(!WIZCHIP.IF.SPI._read_burst || !WIZCHIP.IF.SPI._write_burst) // byte operation { ret = WIZCHIP.IF.SPI._read_byte(); // READ FOR SPI BUFFER CLEAR WIZCHIP.IF.SPI._write_byte((AddrSel & 0x00FF0000) >> 16); ret = WIZCHIP.IF.SPI._read_byte(); // READ FOR SPI BUFFER CLEAR WIZCHIP.IF.SPI._write_byte((AddrSel & 0x0000FF00) >> 8); ret = WIZCHIP.IF.SPI._read_byte(); // READ FOR SPI BUFFER CLEAR WIZCHIP.IF.SPI._write_byte((AddrSel & 0x000000FF) >> 0); ret = WIZCHIP.IF.SPI._read_byte(); // READ FOR SPI BUFFER CLEAR } else // burst operation { spi_data[0] = (AddrSel & 0x00FF0000) >> 16; spi_data[1] = (AddrSel & 0x0000FF00) >> 8; spi_data[2] = (AddrSel & 0x000000FF) >> 0; WIZCHIP.IF.SPI._write_burst(spi_data, 3); } WIZCHIP.IF.SPI._write_byte(0); // WRITE DUMMY VALUE FOR READ (GENERATE SPI CLOCK) ret = WIZCHIP.IF.SPI._read_byte(); WIZCHIP.CS._deselect(); WIZCHIP_CRITICAL_EXIT(); return ret; }