lwip tcp server problem solution please
I made this sauce to implement lwip tcp server
If you try to remove the st-link wire and do it without debugging, the server itself doesn't work
I try to find a way, but I don't know where the problem is
If the LED on the board blinks, it means it's down
Is there a problem with why the server is not working?
If you turn it to debugging, you receive it without any problems, generate a message, and then send it
Then isn't there a problem with the sauce?
If the connection itself is not working when there is no debugging, I don't think the server is created
But if it's a circuit problem, I think it's weird to be a server when you debug it
I don't know where to look
When debugging, the client sent and received properly when it connected to the client from hercules or Raspberry Pi
void Tcp_Task(void const * argument)
{
/* USER CODE BEGIN Tcp_Task */
struct netconn *conn, *newconn;
err_t err, accept_err;
struct netbuf *buf;
void *data;
u16_t len;
LWIP_UNUSED_ARG(argument);
conn = netconn_new(NETCONN_TCP);
if (conn!=NULL)
{
// netconn_bind(conn, NULL, port 번호)
err = netconn_bind(conn, NULL, 5001);
if (err == ERR_OK)
{
netconn_listen(conn);
while (1)
{
accept_err = netconn_accept(conn, &newconn);
if (accept_err == ERR_OK)
{
while (netconn_recv(newconn, &buf) == ERR_OK)
{
do
{
netbuf_data(buf, &data, &len);
memcpy(receivemsg, data, len);
// 송신 메시지 �?성
transmitmsg = procPacket();
// 메시지 길�?�를 불러오는 함수
msg_len = getsendPackSize();
// 메시지 송신
netconn_write(newconn, transmitmsg, msg_len, NETCONN_COPY);
}
while (netbuf_next(buf) >= 0);
netbuf_delete(buf);
}
netconn_close(newconn);
netconn_delete(newconn);
}
osDelay(100);
}
}
else
{
netconn_delete(newconn);
}
}
/* Infinite loop */
for(;;)
{
osDelay(100);
}
/* USER CODE END Tcp_Task */
}