Posted on April 27, 2018 at 08:28please tell me more about UDP PORT:-
this is my code:-(Is it correct or not)
void StartDefaultTask(void const * argument)
{
/* init code for LWIP */
MX_LWIP_Init();
/* USER CODE BEGIN 5 */
/* conn = netconn_new( NETCONN_UDP );
netconn_bind(conn,IP_ADDR_ANY, 7); //local port
netconn_connect(conn, IP_ADDR_BROADCAST, 1235 );
*/
conn = netconn_new(NETCONN_UDP);
if(conn!=NULL)
{
HAL_UART_Transmit(&huart3,'new\r\n',5,100);
HAL_Delay(100);
}
/* set up the IP address of the remote host */
addr.addr = htonl(0xC0A86472);
/* connect the connection to the remote host */
if(netconn_bind(conn,&addr,55555)==ERR_OK)
{
HAL_UART_Transmit(&huart3,'bind\r\n',6,100);
HAL_Delay(100);
}
if( netconn_connect(conn,&addr,0)==ERR_OK)
{
HAL_UART_Transmit(&huart3,'connect\r\n',9,100);
HAL_Delay(100);
}
/* Infinite loop */
for(;;)
{
/* create a new netbuf */
HAL_UART_Transmit(&huart3,'default\r\n',9,100);
HAL_Delay(100);
buf = netbuf_new();
if(buf!=NULL)
{
HAL_UART_Transmit(&huart3,'netbuf_new\r\n',12,100);
HAL_Delay(100);
}
data = netbuf_alloc(buf, 10);
if(data!=NULL)
{
HAL_UART_Transmit(&huart3,'netbuf_alloc\r\n',14,100);
HAL_Delay(100);
}
/* create some arbitrary data */
for(i = 0; i < 10; i++)
data[i] = 'a';
/* send the arbitrary data */
if(netconn_send(conn, buf)==ERR_OK)
{
HAL_UART_Transmit(&huart3,'sending1\r\n',10,100);
HAL_Delay(100);
}
vTaskDelay( 200 ); //some delay!
/* reference the text into the netbuf */
if(netbuf_ref(buf, text, sizeof(text))==ERR_OK)
{
HAL_UART_Transmit(&huart3,'netbuf_ref\r\n',12,100);
HAL_Delay(100);
}
/* send the text */
if(netconn_sendto(conn,buf,&addr,55555)==ERR_OK)
{
HAL_UART_Transmit(&huart3,'sending2\r\n',10,100);
HAL_Delay(100);
}
vTaskDelay( 200 ); //some delay!
/* deallocate connection and netbuf */
netbuf_delete(buf);
osDelay(1);
}
/* USER CODE END 5 */
}
#lwip* #udp #netconn #freertos
