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STM32Cube F2, LwIP, TCP USB server example problem

Question asked by ed@mtrx on Jun 17, 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,(http://www.st.com/web/en/catalog/tools/FM147/CL1794/SC961/SS1743/LN1734/PF257896), particularly the UDP and TCP echo server application described at the application note AN3384, 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.

 

Also getting the error of “Only one usage of each socket address (protocol/network address/port) is normally permitted”, any ideas?

Thanks,

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