WIZnet Developer Forum

W5500 TCP Client Connect() is not working

I am using Stm32f303-RE model. I have a Wiznet5500 ethernet module in my hand. I want to create a tcp client with the module and see it as a server on the computer(i have server in visual studio and its working . i checked .) and exchange information between the two and ı use Stm32cubeide .I have created this code using a few reference sources and application notes from wiznet. But the code is stuck at in connect() function , I couldn’t find the solution. . i cant connect to my server . Although I have reviewed the old topics in the forum, I have not found a solution that works for me.

/* -----------MyCode -----------*/

/* USER CODE BEGIN Header /
/
*


  • @file : main.c
  • @brief : Main program body

  • @attention
  • © Copyright (c) 2020 STMicroelectronics.

  • All rights reserved.
  • This software component is licensed by ST under BSD 3-Clause license,
  • the “License”; You may not use this file except in compliance with the
  • License. You may obtain a copy of the License at:
  •                    opensource.org/licenses/BSD-3-Clause
    

/
/
USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include “main.h”

/* Private includes ----------------------------------------------------------/
/
USER CODE BEGIN Includes /
#include “wizchip_conf.h”
#include “socket.h”
#include “loopback.h”
#include “string.h”
/
USER CODE END Includes */

/* Private typedef -----------------------------------------------------------/
/
USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------/
/
USER CODE BEGIN PD /
/
USER CODE END PD */

/* Private macro -------------------------------------------------------------/
/
USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi3;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI3_Init(void);
/
USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------/
/
USER CODE BEGIN 0 */
void cs_sel() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET); //CS LOW
}

void cs_desel() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_SET); //CS HIGH
}

uint8_t spi_rb(void) {
uint8_t rbuf;
HAL_SPI_Receive(&hspi3, &rbuf, 1, 0xFFFFFFFF);
return rbuf;
}

void spi_wb(uint8_t b) {
HAL_SPI_Transmit(&hspi3, &b, 1, 0xFFFFFFFF);
}
/* USER CODE END 0 */

/**

  • @brief The application entry point.

  • @retval int
    /
    int main(void)
    {
    /
    USER CODE BEGIN 1 */
    uint8_t bufSize = {2,2,2,2,2,2,2,2};
    uint8_t s ;
    s = 0 ;

    uint8_t server_ip[4] = {192,168,1,5} ; // Bu olmalıdır . Bilgşsayarın ip’si ni inceleyerek buldum .
    uint8_t Baglan ;
    uint16_t socket_port = 5656 ;
    uint16_t server_port = 7777 ;

    int32_t ret=2 ;

/* USER CODE END 1 */

/* MCU Configuration--------------------------------------------------------*/

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* USER CODE BEGIN Init */

/* USER CODE END Init */

/* Configure the system clock */
SystemClock_Config();

/* USER CODE BEGIN SysInit */

/* USER CODE END SysInit */

/* Initialize all configured peripherals /
MX_GPIO_Init();
MX_SPI3_Init();
/
USER CODE BEGIN 2 */

/*------ RESET WIZNET /
// HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, SET);
// HAL_Delay(1);
// HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0, RESET);
/
-------------------- */

reg_wizchip_cs_cbfunc(cs_sel, cs_desel);
reg_wizchip_spi_cbfunc(spi_rb, spi_wb);

wizchip_init(bufSize,bufSize);
wiz_NetInfo netInfo = { .mac = {0x00, 0x08, 0xdc, 0xab, 0xcd, 0xef}, // Mac address
.ip = {192, 168, 1, 60}, // IP address
.sn = {255, 255, 255, 0}, // Subnet mask
.gw = {192, 168, 1, 1}}; // Gateway address
wizchip_setnetinfo(&netInfo);
wizchip_getnetinfo(&netInfo);

wiz_NetTimeout gWIZNETTIME = {.retry_cnt = 3, //RCR = 3
.time_100us = 2000}; //RTR = 2000

ctlnetwork(CN_SET_TIMEOUT,(void*)&gWIZNETTIME);
ctlnetwork(CN_GET_TIMEOUT, (void*)&gWIZNETTIME);

/* USER CODE END 2 */

/* Infinite loop /
/
USER CODE BEGIN WHILE */

while (1)
{

	if(((ret =socket((uint8_t )s,Sn_MR_TCP,socket_port,SF_TCP_NODELAY)))==s)
	{
		while(Baglan != 0)
					  {
						Baglan = connect((uint8_t )s,(uint8_t *)server_ip,(uint16_t )server_port); // hedef port numarası
						HAL_Delay(1000);
					  }

	}
	
	Baglan = 0 ;


/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */

}

/* USER CODE END 3 */
}

/**

  • @brief System Clock Configuration
  • @retval None
    */
    void SystemClock_Config(void)
    {
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

/** Initializes the CPU, AHB and APB busses clocks
/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/
* Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}

/**

  • @brief SPI3 Initialization Function
  • @param None
  • @retval None
    */
    static void MX_SPI3_Init(void)
    {

/* USER CODE BEGIN SPI3_Init 0 */

/* USER CODE END SPI3_Init 0 */

/* USER CODE BEGIN SPI3_Init 1 */

/* USER CODE END SPI3_Init 1 /
/
SPI3 parameter configuration*/
hspi3.Instance = SPI3;
hspi3.Init.Mode = SPI_MODE_MASTER;
hspi3.Init.Direction = SPI_DIRECTION_2LINES;
hspi3.Init.DataSize = SPI_DATASIZE_8BIT;
hspi3.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi3.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi3.Init.NSS = SPI_NSS_SOFT;
hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32;
hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi3.Init.CRCPolynomial = 7;
hspi3.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi3.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
if (HAL_SPI_Init(&hspi3) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SPI3_Init 2 */

/* USER CODE END SPI3_Init 2 */

}

/**

  • @brief GPIO Initialization Function
  • @param None
  • @retval None
    */
    static void MX_GPIO_Init(void)
    {
    GPIO_InitTypeDef GPIO_InitStruct = {0};

/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();

/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0|CS_Pin, GPIO_PIN_RESET);

/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);

/*Configure GPIO pins : PA0 CS_Pin */
GPIO_InitStruct.Pin = GPIO_PIN_0|CS_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/*Configure GPIO pin : PB0 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**

  • @brief This function is executed in case of error occurrence.
  • @retval None
    /
    void Error_Handler(void)
    {
    /
    USER CODE BEGIN Error_Handler_Debug /
    /
    User can add his own implementation to report the HAL error return state */

/* USER CODE END Error_Handler_Debug */
}

#ifdef USE_FULL_ASSERT
/**

  • @brief Reports the name of the source file and the source line number
  •     where the assert_param error has occurred.
    
  • @param file: pointer to the source file name
  • @param line: assert_param error line source number
  • @retval None
    */
    void assert_failed(uint8_t file, uint32_t line)
    {
    /
    USER CODE BEGIN 6 /
    /
    User can add his own implementation to report the file name and line number,
    tex: printf(“Wrong parameters value: file %s on line %d\r\n”, file, line) /
    /
    USER CODE END 6 /
    }
    #endif /
    USE_FULL_ASSERT */

/************************ © COPYRIGHT STMicroelectronics *END OF FILE/

I tried to detect the problem with the wireshark program, but the message I see is always in the same application. What is the problem in connect fuction ? I would be glad if you could help.

and by the way im using this connection :

3.3V ----> 3.3v on stm
mosi — > mosi on stm
miso ----> miso on stm
clk --------> spi’s clk on stm
gnd --------> gnd on stm
csn ---------> spi’s cs on stm

im not using reset pin on wiznet . Are these connections enough?

If you use the WIZ850io module, the connection is enough.
Looking at the packet, the module is looking for a 192.168.1.5 server, but it does not receive a response.
This may not be a firmware issue
Check if you have a server and check the network environment.

i checked network environment . But all its ok . i looked port . its opening with application . İ try close the firewall but its stay same position . not running . icant find why

What is 192.168.1.5?
I can see the ARP packet sent by W5500, I think your PC and W5500 are connected.
If 192.168.1.5 is not a PC, check if the PC can connect to 192.168.1.5

what is mean "check if the PC can connect to 192.168.1.5 " . 192.168.1.5 is my personal pc’s ip . im using win10 home .

If your PC is 192.168.1.5, I think there is a problem with the PC environment. Your PC is not giving ARP Response. Turn off any firewalls, virtual machine programs or security programs.

hi becky ,

I slightly modified my code.im using only Windows firewall for antivirus . The ip of my computer is 192.168.1.6 and the ip of wiznet is set to 192.168.1.5. I want to show you in the images how I did it :

3nisan2020_4

My new Code :
/------------------------------------------------------------------/
/* USER CODE BEGIN Header /
/
*


  • @file : main.c
  • @brief : Main program body

  • @attention
  • © Copyright (c) 2020 STMicroelectronics.

  • All rights reserved.
  • This software component is licensed by ST under BSD 3-Clause license,
  • the “License”; You may not use this file except in compliance with the
  • License. You may obtain a copy of the License at:
  •                    opensource.org/licenses/BSD-3-Clause
    

/
/
USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include “main.h”

/* Private includes ----------------------------------------------------------/
/
USER CODE BEGIN Includes /
#include “wizchip_conf.h”
#include “socket.h”
#include “loopback.h”
#include “string.h”
/
USER CODE END Includes */

/* Private typedef -----------------------------------------------------------/
/
USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------/
/
USER CODE BEGIN PD /
/
USER CODE END PD */

/* Private macro -------------------------------------------------------------/
/
USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi3;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI3_Init(void);
/
USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------/
/
USER CODE BEGIN 0 */
void cs_sel() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET); //CS LOW
}

void cs_desel() {
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_SET); //CS HIGH
}

uint8_t spi_rb(void) {
uint8_t rbuf;
HAL_SPI_Receive(&hspi3, &rbuf, 1, 0xFFFFFFFF);
return rbuf;
}

void spi_wb(uint8_t b) {
HAL_SPI_Transmit(&hspi3, &b, 1, 0xFFFFFFFF);
}
/* USER CODE END 0 */

/**

  • @brief The application entry point.

  • @retval int
    /
    int main(void)
    {
    /
    USER CODE BEGIN 1 */
    uint8_t bufSize = {2,2,2,2,2,2,2,2};
    uint8_t s ;
    s = 0 ;

    uint8_t server_ip[4] = {192,168,1,6} ; // My PC’s new IP address .
    uint8_t Baglan = 10 ; // when w5500 connect to pc correctly , this count going to “0” .
    uint16_t socket_port = 5656 ; // port
    uint16_t server_port = 5656 ; // port
    uint16_t ret=2 ; // when socket is work correctly , this count going to “sucket number”
    /*

    int8_t memsize[2][8] = {{2,2,2,2,2,2,2,2},{2,2,2,2,2,2,2,2}};

    uint8_t rec_buf [20];
    */

/* USER CODE END 1 */

/* MCU Configuration--------------------------------------------------------*/

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* USER CODE BEGIN Init */

/* USER CODE END Init */

/* Configure the system clock */
SystemClock_Config();

/* USER CODE BEGIN SysInit */

/* USER CODE END SysInit */

/* Initialize all configured peripherals /
MX_GPIO_Init();
MX_SPI3_Init();
/
USER CODE BEGIN 2 */

reg_wizchip_cs_cbfunc(cs_sel, cs_desel);
reg_wizchip_spi_cbfunc(spi_rb, spi_wb);

wizchip_init(bufSize,bufSize);

wiz_NetInfo netInfo = { .mac = {0x00, 0x08, 0xdc, 0xab, 0xcd, 0xef}, // Mac address
.ip = {192, 168, 1, 5}, // w5500 IP address
.sn = {255, 255, 255,0}, // Subnet mask
.gw = {192, 168, 1,1}}; // Gateway address
wizchip_setnetinfo(&netInfo);//set IP address
wizchip_getnetinfo(&netInfo);

/------TIMEOUT CONFIG-----/
wiz_NetTimeout gWIZNETTIME = {.retry_cnt = 3, //RCR = 3
.time_100us = 2000}; //RTR = 2000

ctlnetwork(CN_SET_TIMEOUT,(void*)&gWIZNETTIME);
ctlnetwork(CN_GET_TIMEOUT, (void*)&gWIZNETTIME);

/* USER CODE END 2 */

/* Infinite loop /
/
USER CODE BEGIN WHILE */

while (1)
{

	ret = socket(s,Sn_MR_TCP,socket_port,SF_TCP_NODELAY); // s = socket num
	HAL_Delay(1000);


	while(Baglan != 1 ) // SOCK_OK = 1 ;
	{

		Baglan = connect((uint8_t )s,(uint8_t *)server_ip,(uint16_t )server_port); // hedef port numarası
									HAL_Delay(1000);
	}
	Baglan = 0 ;



/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */

}

/* USER CODE END 3 */
}

/**

  • @brief System Clock Configuration
  • @retval None
    */
    void SystemClock_Config(void)
    {
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

/** Initializes the CPU, AHB and APB busses clocks
/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/
* Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}

/**

  • @brief SPI3 Initialization Function
  • @param None
  • @retval None
    */
    static void MX_SPI3_Init(void)
    {

/* USER CODE BEGIN SPI3_Init 0 */

/* USER CODE END SPI3_Init 0 */

/* USER CODE BEGIN SPI3_Init 1 */

/* USER CODE END SPI3_Init 1 /
/
SPI3 parameter configuration*/
hspi3.Instance = SPI3;
hspi3.Init.Mode = SPI_MODE_MASTER;
hspi3.Init.Direction = SPI_DIRECTION_2LINES;
hspi3.Init.DataSize = SPI_DATASIZE_8BIT;
hspi3.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi3.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi3.Init.NSS = SPI_NSS_SOFT;
hspi3.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_32;
hspi3.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi3.Init.TIMode = SPI_TIMODE_DISABLE;
hspi3.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi3.Init.CRCPolynomial = 7;
hspi3.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi3.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
if (HAL_SPI_Init(&hspi3) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SPI3_Init 2 */

/* USER CODE END SPI3_Init 2 */

}

/**

  • @brief GPIO Initialization Function
  • @param None
  • @retval None
    */
    static void MX_GPIO_Init(void)
    {
    GPIO_InitTypeDef GPIO_InitStruct = {0};

/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();

/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0|CS_Pin, GPIO_PIN_RESET);

/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, GPIO_PIN_0, GPIO_PIN_RESET);

/*Configure GPIO pins : PA0 CS_Pin */
GPIO_InitStruct.Pin = GPIO_PIN_0|CS_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

/*Configure GPIO pin : PB0 */
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**

  • @brief This function is executed in case of error occurrence.
  • @retval None
    /
    void Error_Handler(void)
    {
    /
    USER CODE BEGIN Error_Handler_Debug /
    /
    User can add his own implementation to report the HAL error return state */

/* USER CODE END Error_Handler_Debug */
}

#ifdef USE_FULL_ASSERT
/**

  • @brief Reports the name of the source file and the source line number
  •     where the assert_param error has occurred.
    
  • @param file: pointer to the source file name
  • @param line: assert_param error line source number
  • @retval None
    */
    void assert_failed(uint8_t file, uint32_t line)
    {
    /
    USER CODE BEGIN 6 /
    /
    User can add his own implementation to report the file name and line number,
    tex: printf(“Wrong parameters value: file %s on line %d\r\n”, file, line) /
    /
    USER CODE END 6 /
    }
    #endif /
    USE_FULL_ASSERT */

/************************ © COPYRIGHT STMicroelectronics *END OF FILE/

/----------------------------/

And I turned of firewall like this :

I test the operation of my device as follows. I am using ‘breakpoint’ on the stm32cubeide application. I then examine the values that connect () 'gives me. The return values I constantly see are similar.

My errors decimal values = -3 , -4 , -13 .the code initially gives “-4” and sometimes “-13” as an error. And then he always gives the error “-3” and gets stuck.

My wireshark ss and description of the errors in the driver :


i fix it the problem :slight_smile: thank you for all becky !

Copyright © 2017 WIZnet Co., Ltd. All Rights Reserved.