Posted on May 18, 2017 at 02:59Hi Flavio
I tried to use your .ioc for testing a simple tcp client with netconn api. I have started form the Demo project and I have tested my app and works fine. I am trying to implement the same application using cubemx for the obvious reasons and its been pretty painfull with all them bugs in lwip so far. Hope to provide some of your insight since you ve already been there.
First I generate code using your ioc file and I can succesfully ping the board. Then in the start thread after MX_LWIP_Init() I call my simple tcp client function inside a wile loop with a HAL_Delay of 1 sec
/* StartDefaultTask function */
void StartDefaultTask(void const * argument)
{
/* init code for LWIP */
MX_LWIP_Init();
/* USER CODE BEGIN StartDefaultTask */
HAL_Delay(1000);
while(1){
tcp_client_test();
HAL_Delay(1000);
}
/* Infinite loop */
for(;;)
{
osDelay(1);
}
/* USER CODE END StartDefaultTask */
}
My tcp_client_test function is as follows:
void tcp_client_test(){
unsigned char client_test_message[] = {
'T','E','S','T','M','S','S','G'};
struct netconn *conn;
err_t err;
/* Create a new TCP connection handle */
conn = netconn_new(NETCONN_TCP);
ip_addr_t ipaddr;
IP_ADDR4(&ipaddr,(uint8_t) 192,(uint8_t) 168,(uint8_t) 0,(uint8_t) 2);
/*connect to server*/
err = netconn_connect(conn, &ipaddr, 5001);
/*write a test message to server*/
netconn_write(conn, client_test_message, strlen((char*)client_test_message), NETCONN_COPY);
/* Close the connection */
netconn_close(conn);
/* delete connection */
netconn_delete(conn);
}
When the program reaches to
conn = netconn_new(NETCONN_TCP) , It gets stuck. I did a trace of where the problem is, and the problem is when lwip_netconn_do_connect --calls--> tcp_output in line 1001 of tcp_output.c at: netif = ip_route(&pcb->local_ip, &pcb->remote_ip);
Any idea what the problem might or to what directio nI should probably look?
Thank you very much for your informative post and for your ioc file.
Aris
