W5500 send is not working

Question

void StartDefaultTask(void *argument) { HAL_UARTEx_ReceiveToIdle_DMA(&huart3, RxBuffer,RxBufferSize); __HAL_DMA_DISABLE_IT(&hdma_usart3_rx,DMA_IT_HT); socket(1,Sn_MR_TCP, sending[22],SF_IO_NONBLOCK); listen(1); for(;;) { if((size = getSn_RX_RSR(1)) > 0){ // VERİ GELDİYSE............ recv(1, TxBuffer, size); aFiltre[1]=0; HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1,GPIO_PIN_SET); HAL_UART_Transmit(&huart3, TxBuffer,size,HAL_MAX_DELAY); HAL_GPIO_WritePin(GPIOB, GPIO_PIN_1,GPIO_PIN_RESET); size=0;} } /* USER CODE END StartDefaultTask */ } void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size){ send(1,RxBuffer,Size); HAL_UARTEx_ReceiveToIdle_DMA(&huart3, RxBuffer,RxBufferSize); } I can receive the code with recv and transmit the uart files. But after receiving the data from the uart, I cannot send it. However, when I add a 100ms delay to the Rtos side, the problem is solved. The problem occurs again when I perform a fast data transfer. What should I do? Can you help?

Eugeny · Answer

Sametzedmir: I cannot send it. How you can’t send it? I bet send returns status, but you do not read it. You can look at what is going on the network by capturing data exchange at the remote node using e.g. Wireshark. Sametzedmir: when I add a 100ms delay to the Rtos side Where exactly?

Eugeny · Answer

Is callback running in separate thread, or in the same thread as for loop? In other words, may there be a W5500 access conflict?

Sametzedmir · Answer

#include "main.h" #include "dma.h" #include "spi.h" #include "usart.h" #include "usb_device.h" #include "gpio.h" /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includes */ #include "wizchip_conf.h" #include "string.h" #include "w5500.h" #include "loopback.h" #include "socket.h" #include "Atama.h" #include "Eth_Func.h" #include "Flash.h" #include "dma.h" /* USER CODE END Includes */ /* Private typedef -----------------------------------------------------------*/ /* USER CODE BEGIN PTD */ #define RxBufferSize 1024 uint8_t RxBuffer[RxBufferSize]; #define TxBufferSize 1024 uint8_t TxBuffer[TxBufferSize]; uint16_t size=0; uint8_t a=0; /* ------------------------------------------------------------------------MAİN DOSYASINDAN DEN ÇA�?IRANLAR DE�?İ�?KENLER-----------------------------------------------------------------*/ extern DMA_HandleTypeDef hdma_usart3_rx; uint16_t size1 = 0; /* 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 ---------------------------------------------------------*/ /* USER CODE BEGIN PV */ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(void); /* USER CODE BEGIN PFP */ /* USER CODE END PFP */ /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size){ HAL_UARTEx_ReceiveToIdle_IT(&huart3, RxBuffer,RxBufferSize); send(1,RxBuffer,Size); } /* 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}; /* USER CODE END 1 */ /* MCU…

Eugeny · Answer

How can I help - you must provide info I asked for. Status code for send, and if callback runs in threaded mode. Sametzedmir: It works when I put a delay inside the for loop. What exactly the command for delay?

Sametzedmir · Answer

I am struggling with the problem to solve it. And finally I discovered this. If I constantly query getSn_RX_RSR(sn) as polling, I have problems with send(). I observed an improvement when I increased the duration of the getSn_Rx_RSR(sn) query. What can i do in this situation. My best regards,

Eugeny · Answer

IMHO you anyway seem to be doing something wrongly, and you’ll sometimes get the faults. If execution is threaded, then there may be access concurrency to the chip. Even if you do not use threading and using interrupts, if interrupt occurs during executing chip access you’ll get faulty result.

Sametzedmir · Answer

Actually the situation is this. I constantly perform the send operation on the interrupt when there is a getSn_RX_RSR query. It works fine when I put a wait or remove the getSn_RX_RSR query. I’m using the W5500 chip’s own libraries. I’m trying hard to solve this problem I’m encountering. I’m open to your ideas.

Eugeny · Answer

When accessing chip with single command or in specific sequence in main loop you must disable interrupts.

Bekdemir · Answer

Bu soruna ait bir çözüm www.bekdemir.com.tr sitesinde mevcuttur. Fazlası ile yardımcı oldu, özellikle stud çivisi ile alakalı olarak