cancel
Showing results for 
Search instead for 
Did you mean: 

STM32F429 TCP/IP with lwIP.

Vic95
Associate

Hello! I'm trying to connect my STM32F429 via ethernet to a PLC. It seems that this board is supporting a LAN8742A PHY. I generated the code with CubeMX selecting my nucleo board, then, I think that the initialitzation of all of the peripherials ( GPIO, DMA, USART... ) are correct.

I create a tcp_pcb like this:

struct tcp_pcb *echo_pcb;
  echo_pcb = tcp_new();

then, if this tcp_pcb is not NULL I bind it:

err_t err;
err = tcp_bind(echo_pcb,IP4_ADDR_ANY,502);

and finally, if not exists an error, I put the tcp_pcb in LISTENING state.

echo_pcb = tcp_listen_with_backlog(echo_pcb,0xff);

The error comes when I try to bind a tcp_pcb. In my live watch debugger I see that the tcp_pcb doesn't have any ip addres. And when I put this tcp_pcb on LISTENING state, the ipaddres still 0. What this meens that I can't connect with my PC because I haven't any addres to connect.

After all of that, I put in my while(1) this function, waiting for a Client:

tcp_accept(echo_pcb);

Can anyone tell my what happen?

Thank you so much.

PS: sorry for my bad english.

0 REPLIES 0