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

[address@hidden]

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 !
>
>
>
>
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