Hello,

I'm trying to implement the code below, but it stops in the line sock = socket(AF_INET, SOCK_DGRAM, 0);

the message is "sys_arch_timeouts: ptask != NULL"

the procedure sequence is:

-lwip_socket (type=0, protocol=100)
-alloc_socket (newcon=0x80173c)
-sys_sem_wait (sem=0x805ea8)
-sys_arch_timeouts ()
-sys_assert ()

I have already tried a TCP socket but got same problem.
I am using lwIP 1.3.0 and freeRTOS 5.3.0. uController: MCF51CN128.
Could anyone help me?

void test_UDP_send( void * pvParameters )
{

int sock;
struct sockaddr_in sLocalAddr, sDestAddr;
char reply[]="testing";
char buffer[1024];
int nbytes;

sock = socket(AF_INET, SOCK_DGRAM, 0);

memset((char *)&sLocalAddr, 0, sizeof(sLocalAddr));
memset((char *)&sDestAddr, 0, sizeof(sDestAddr));

//Destination
sDestAddr.sin_family = AF_INET;
sDestAddr.sin_len = sizeof(sDestAddr);
sDestAddr.sin_addr.s_addr = htonl(INADDR_BROADCAST);
sDestAddr.sin_port = 1234;

//Source
sLocalAddr.sin_family = AF_INET;
sLocalAddr.sin_len = sizeof(sLocalAddr);
sLocalAddr.sin_addr.s_addr = htonl(INADDR_ANY);
sLocalAddr.sin_port = 1235;


bind(sock, (struct sockaddr *)&sLocalAddr, sizeof(sLocalAddr));

lwip_close(sock);

for(;;)
{
nbytes=lwip_recv(sock, buffer, sizeof(buffer),8);
if (nbytes>0){
lwip_sendto(sock, buffer, nbytes, 0, (struct sockaddr *)&sDestAddr, sizeof(sDestAddr));
led_green_on();
vTaskDelay(200);
led_off();
vTaskDelay(500);
}

lwip_sendto(sock, reply, sizeof(reply), 0, (struct sockaddr *)&sDestAddr, sizeof(sDestAddr));
vTaskDelay( 200 ); //some delay!


}
}

I suggest posting your question to the lwip mailing list.

I did it. Thanks