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[FreeRTOS Home] [Live FreeRTOS Forum] [FAQ] [Archive Top] [May 2008 Threads] lwip task startPosted by Maurizio on May 21, 2008 Hi all, I'm doing a demo on udp lwip working for Str91x with Rowley. My demo is not getting send packages udp, in my opinion there is a problem when the FreeRTOS launches task. Below is my code, to understand how to launch the task I have taken inspiration from demo WebServer included in the package FreeRTOS 5. someone can help me? it's my code ok?
===========================================MAIN.C========= ...... #ifdef STACK_LWIP /* Create the lwIP task. This uses the lwIP RTOS abstraction layer.*/ vlwIPInit(); sys_set_state(( signed portCHAR * ) "httpd", lwipBASIC_SERVER_STACK_SIZE ); sys_thread_new( vBasicWEBServer, ( void * ) NULL, ( tskIDLE_PRIORITY + 2 )basicwebWEBSERVER_PRIORITY ); sys_set_default_state(); #endif .......
=========================================UDP_SENDER.H======== ...................... #ifndef UDP_SENDER_H #define UDP_SENDER_H
#include <91x_type.h>
/*------------------------------------------------------------------------------*/ /* MACROS */ /*------------------------------------------------------------------------------*/ #define basicudp_SENDER_PRIORITY ( tskIDLE_PRIORITY + 2 )
/* The port on which we listen. */ #define webUDP_PORT( 1234 )
/* Delay on close error. */ #define webSHORT_DELAY( 10 / portTICK_RATE_MS )
/* The IP address being used. */ #define emacIPADDR010 #define emacIPADDR1 200 #define emacIPADDR2 200 #define emacIPADDR3 2
/* The gateway address being used. */ #define emacGATEWAY_ADDR0 10 #define emacGATEWAY_ADDR1 200 #define emacGATEWAY_ADDR2 200 #define emacGATEWAY_ADDR3 1
/* The network mask being used. */ #define emacNET_MASK0 255 #define emacNET_MASK1 255 #define emacNET_MASK2 255 #define emacNET_MASK3 252
#define STATIC_IP 1 #define DHCP_IP 2
#define lwipBASIC_SERVER_STACK_SIZE250
/*------------------------------------------------------------------------------*/ /* PROTOTYPES */ /*------------------------------------------------------------------------------*/ /* The function that implements the WEB server task. */ void vBasicUDPSender( void *pvParameters );
/* Initialisation required by lwIP. */ void vlwIPInit( void );
#endif
=========================================UDP_SENDER.C==========================
#define basicwebWEBSERVER_PRIORITY ( tskIDLE_PRIORITY + 2 ) #define lwipTCP_STACK_SIZE600
/* Standard includes. */ #include <stdio.h> #include <string.h> #include <91x_type.h>
/* Scheduler includes. */ #include "FreeRTOS.h" #include "task.h" #include "semphr.h"
/* Demo includes. */ #include "lwIPWebServer/BasicWEB.h" #include "udpecho-sender.h" /* lwIP includes. */ #include "lwip/api.h" #include "lwip/tcpip.h" #include "lwip/memp.h" #include "lwip/stats.h" #include "Dnetif/loopif.h" //#include "lcd.h" #include "httpd.h"
//#define lwipTCP_STACK_SIZE600 //XXXXXXXXXXXXXXXXXXXXXXXXXXXX #include "lwip/udp.h" #include "lwip/mem.h" #include "lwip/debug.h" /*------------------------------------------------------------------------------*/ /* GLOBALS */ /*------------------------------------------------------------------------------*/ static struct netif EMAC_if;
/*------------------------------------------------------------------------------*/ /* FUNCTIONS */ /*------------------------------------------------------------------------------*/ void vlwIPInit( void ) { /* Initialize lwIP and its interface layer. */ sys_init(); mem_init(); memp_init(); pbuf_init(); netif_init(); ip_init(); sys_set_state(( signed portCHAR * ) "lwIP", lwipTCP_STACK_SIZE); udp_init(); sys_set_default_state(); }
void udp_echo_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, struct ip_addr *addr, u16_t port) {
if (p != NULL) { /* send received packet back to sender */ udp_sendto(pcb, p, addr, port); /* free the pbuf */ pbuf_free(p); } }
void udp_echo_init(void) { struct udp_pcb * pcb;
/* get new pcb */ pcb = udp_new(); if (pcb == NULL) { LWIP_DEBUGF(UDP_DEBUG, ("udp_new failed!\n")); return; }
/* bind to any IP address on port 7 */ if (udp_bind(pcb, IP_ADDR_ANY, UDP_PORT) != ERR_OK) { LWIP_DEBUGF(UDP_DEBUG, ("udp_bind failed!\n")); return; }
/* set udp_echo_recv() as callback function for received packets */ udp_recv(pcb, udp_echo_recv, NULL); }
void vBasicWEBServer( void *pvParameters ) { struct ip_addr xIpAddr, xNetMast, xGateway; extern err_t ethernetif_init( struct netif *netif );
/* Parameters are not used - suppress compiler error. */ ( void ) pvParameters;
/* Create and configure the EMAC interface. */ IP4_ADDR( &xIpAddr, emacIPADDR0, emacIPADDR1, emacIPADDR2, emacIPADDR3 ); IP4_ADDR( &xNetMast, emacNET_MASK0, emacNET_MASK1, emacNET_MASK2, emacNET_MASK3 ); IP4_ADDR( &xGateway, emacGATEWAY_ADDR0, emacGATEWAY_ADDR1, emacGATEWAY_ADDR2, emacGATEWAY_ADDR3 ); netif_add( &EMAC_if, &xIpAddr, &xNetMast, &xGateway, NULL, ethernetif_init, tcpip_input );
/* make it the default interface */ netif_set_default( &EMAC_if );
/* bring it up */ netif_set_up(&EMAC_if);
/* Initialize HTTP */ udp_echo_init();//httpd_init();
/* Nothing else to do. No point hanging around. */ vTaskDelete( NULL ); }
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