W5500 UDP stop sending after a while

Question

Hi, I am doing udp communicate between stm32 + w5500 and pc.The loopback test works fine. Then I created two freertos tasks, one task poll-received pc data with socket 0 , and another task sent data to pc with socket 0 by uart data interrupt. It was found that the receiving task kept running steadily, while the sending task stopped after running for a period of time. I used ioLibrary_Driver and spi polling read/write methord. The criticalzone callback registered the freertos critical function. Is there a conflict between using the same socket 0 for task scheduling transmission and reception？

Eugeny · Answer

besthere: Is there a conflict between using the same socket 0 for task scheduling transmission and reception？ Not clear from your description if send and receive are fully asynchronous. If yes, this may have problems - send and receive use same registers (e.g. status register, command register) and you must NOT run these handlers concurrently. Queue the tasks.