Hello I work on a project which use FreeRTOS and Lwip v 1.4.1. I'm using a LandTiger board which is made on an NXP LPC1768. My project is based on LPCOpen 2.10 and derivated from the “lwip_tcpecho_freertos” example. I'm only using the Socket API.
In TCP, everything is OK! but in UDP doesn't... I modified the “lwip_tcpecho_freertos” example to send UDP packets to my PC. I have the problem that lwip_sendto stops working after sending one packet. /* Send some data on a RAW or UDP pcb contained in a netconn * Called from netconn_send */ void do_send(struct api_msg_msg *msg) { if (ERR_IS_FATAL(msg->conn->last_err)) { msg->err = msg->conn->last_err; } else { ... } TCPIP_APIMSG_ACK(msg); } lwip_sendto calls netconn_send, which calls tcpip_apimsg, which returns an error. ...lwip_write -> lwip_send -> lwip_sendto -> netconn_send -> do_send -> tcpip_apimsg... err_t tcpip_apimsg(struct api_msg *apimsg) { struct tcpip_msg msg; #ifdef LWIP_DEBUG /* catch functions that don't set err */ apimsg->msg.err = ERR_VAL; #endif if (sys_mbox_valid(&mbox)) { msg.type = TCPIP_MSG_API; msg.msg.apimsg = apimsg; sys_mbox_post(&mbox, &msg); sys_arch_sem_wait(&apimsg->msg.conn->op_completed, 0); return apimsg->msg.err; } return ERR_VAL; } As the problem occurs, The Ping keeps working normaly. If you have any idea, it'll be great as i'm really stuck on this problem Bacheh Karaji -- View this message in context: http://lwip.100.n7.nabble.com/Problem-with-sending-UDP-packets-in-LwIP-FreeRTOS-tp28403.html Sent from the lwip-users mailing list archive at Nabble.com. _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users