Hi. Your MPU configuration doesn't set all 4GB of space to be non-cacheable. This overwrites the default settings to prevent speculative read to unavailable memories (range 0x60000000 to 0xE0000000, set as strong ordered, code execution disabled). Se...

Hi. I faced the same problem.The problem is that the send buffer is located in cached memory. When using the lwip_send socket API, the transfer data buffer is stored as a reference by netbuf_ref. Then this buffer will be sent by DMA. Ways to solve th...