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STM32Cube F2, LwIP, TCP UDP server example problem using RTOS

Question asked by ed@mtrx on Jun 26, 2015

I am trying the LwIP TCP/IP stack demonstration for STM32F2x7 microcontrollers based on LwIP TCP/IP stack and FreeRTOS on a STM3221G-EVAL board,(, particularly the UDP and TCP echo server application described at the application note UM1713, and  running the firmware under folder LwIP_UDPTCP_Echo_Server_Netconn_RTOS since I am using FreeRTOS.

I am running the echotool on a couples of PCs, but the firmware respond to only 1 PC at a time. When responding to echotool running on 1 PC, I am getting timeout responses on the other PC. Any ideas?