|
|
楼主 |
发表于 2021-7-27 17:41:36
|
显示全部楼层
- /*
- * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * This file is part of the lwIP TCP/IP stack.
- *
- * Author: Adam Dunkels <adam@sics.se>
- *
- */
- /* Includes ------------------------------------------------------------------*/
- #include "udpecho.h"
- #include "lwip/opt.h"
- #if LWIP_NETCONN
- #include "lwip/api.h"
- #include "lwip/sys.h"
- /* Private typedef -----------------------------------------------------------*/
- /* Private define ------------------------------------------------------------*/
- #define UDPECHO_THREAD_PRIO (osPriorityAboveNormal)
- /* Private macro -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- /* Private function prototypes -----------------------------------------------*/
- /* Private functions ---------------------------------------------------------*/
- static void
- udpecho_thread(void *arg)
- {
- struct netconn *conn;
- struct netbuf *buf, *tx_buf;
- err_t err;
- LWIP_UNUSED_ARG(arg);
-
- conn = netconn_new(NETCONN_UDP);
- netconn_bind(conn, IP_ADDR_ANY, 7);
-
- LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;);
-
- while (1) {
- err = netconn_recv(conn, &buf);
- if (err == ERR_OK) {
-
- tx_buf = netbuf_new();
- netbuf_alloc(tx_buf, buf->p->tot_len);
-
- pbuf_take(tx_buf->p, (const void *)buf->p->payload, buf->p->tot_len);
-
- err = netconn_sendto(conn, tx_buf, (const ip_addr_t *)&(buf->addr), buf->port);
- if(err != ERR_OK) {
- LWIP_DEBUGF(LWIP_DBG_ON, ("netconn_send failed: %d\n", (int)err));
- } else {
- LWIP_DEBUGF(LWIP_DBG_ON, ("got %s\n", buffer));
- }
- netbuf_delete(tx_buf);
- }
- netbuf_delete(buf);
- }
- }
- /*-----------------------------------------------------------------------------------*/
- void
- udpecho_init(void)
- {
- sys_thread_new("udpecho_thread", udpecho_thread, NULL, (configMINIMAL_STACK_SIZE*2), UDPECHO_THREAD_PRIO);
- }
- #endif /* LWIP_NETCONN */
|
|
发表于 2021-4-16 11:13:22
厉害 马上买板子
