Re: [lwip-users] Using both sequential and raw APIs

[ckchan]

i'm trying to workaround the netconn_recv blocking since i'm using lwIP 
1.1.0. i want to send tcp packet at fixed interval (say every 1 sec) to 
the server,  while still be able to received (non fixed interval) tcp 
packet from server. using only netconn APIs, i could only do "either" 
and not "both".

no, the FreeRTOS didnt mix the APIs. i meant to say that the first half 
of the init is based and referred from the example supplied.

> Date: Wed, 05 Nov 2008 17:34:48 +0100
> From: "address@hidden" <address@hidden>
> Subject: Re: [lwip-users] Using both sequential and raw APIs
> To: Mailing list for lwIP users <address@hidden>
> Message-ID: <address@hidden>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Your code will most certainly NOT work and mixing the APIs in this way 
> is absolutely not supported. If you tried long enough (and maybe changed 
> some lwIP code), you might get it working, but I don't see the point in 
> that. Why do you want to mix the APIs anyway?
>
> Oh, and does the "basic web server supplied with FreeRTOS" also mix the 
> APIs? If so, it's a bad example of using lwIP...
>
> Simon
>
>
>
> CK Chan wrote:
>   
> > i'm building a TCP client with lwIP 1.1.0 on top of FreeRTOS.
> > i tried to use both APIs but have problem receiving TCP packet. if i use 
> > netconn_recv() APIs, i can receive the packet. i'm trying to use 
> > tcp_recv() instead
> >
> > most of the codes is from basic web server supplied with FreeRTOS.
> >
> > will this work ?
> >
> > /********************************************************/
> > static err_t
> > recv_tcp(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err)
> > {
> >    LWIP_UNUSED_ARG(arg);
> >    LWIP_UNUSED_ARG(err);
> >
> >    printf("recv...\r\n");
> >    // Inform TCP that we have taken the data
> >    tcp_recved(pcb, p->tot_len);
> >
> >    return  ERR_OK;
> > }
> >
> > /********************************************************/
> > void vBasicTCPClient( void *pvParameters )
> > {
> > struct netconn *pxTCPListener;// *pxTCPNewConnection;
> > struct ip_addr xIpAddr, xNetMast, xGateway, xIPHost, addr;
> > extern err_t ethernetif_init( struct netif *netif );
> > static struct netif EMAC_if;
> > err_t err;
> >
> >    /* 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);
> >      /* Create a new tcp connection handle */
> >        pxTCPListener = netconn_new( NETCONN_TCP );
> >
> >        tcp_arg(pxTCPListener->pcb.tcp, NULL);
> >        tcp_recv(pxTCPListener->pcb.tcp, recv_tcp);  // set a callback
> >
> >        IP4_ADDR(&xIPHost,192,168,1,101);      // IP of TCP server
> >        netconn_bind(pxTCPListener, NULL, tcpSERVER_PORT );
> >        err = netconn_connect(pxTCPListener, &xIPHost, tcpSERVER_PORT);
> >        if (err == ERR_OK)
> >        {
> >            printf("connected...\r\n");
> >        }
> >          for( ;; )
> >        {
> >        }
> > }
> >
> >
> >
> > thanks for your time !
> >
> >
> >
> >
> > _______________________________________________
> > lwip-users mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/lwip-users
> >
> >   
> >     
>
>
>
>
>
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