W5500 SPI corrupted data

Question

Hello, I need help. I am making a tcp server. But I can’t get the data completely. test1: I am sending 200 bytes from the computer over tcp. getSn_RX_RSR(http_socket) returns 200. recv (http_socket, http_buff, 200) returns 200. But the data in http_buff is corrupted. test2: I am sending 200 bytes from the computer over tcp. getSn_RX_RSR(http_socket) returns 200. recv (http_socket, http_buff, 100) HAL_Delay(1) // make a delay recv (http_socket, http_buff, 100) HAL_Delay(1) It works but doesn’t look right. What am I doing wrong? Full code: https://github.com/xitr/w5500_test SPI analysis and pc’s log: /Result/test1 and test2 I am using Ethernet Shield with W5500 and STM32-H103. http://wiki.amperka.ru/продукты:ethernet-shield

becky · Answer

Hello, Could you explain more precisely what you mean by not look right and being corrupted. I don’t know what is in the Result. Please know me what data was sent from the PC and what data was received. I wish you checked through wireshark.

xitr · Answer

The problem was in the hardware. IOREF pin must be connected to 3.3V on my board.