CC3200 SL_IPPROTO_RAW无法recv到IP RAW Packet,提示-11 (try again)

您好，TI工程师

我在CC3200 example code: getting_started_with_wlan_station

中有添加如下function 去sniffer IP layer的 RAW Pakcet,  但始终返回错误信息：[(PNum=×) recievedBytes= -11] :

查看-11 表示 try again ， 可以麻烦看下是哪里的不对吗？

我添加的function 是按照TI wiki 中描述里进行的

http://processors.wiki.ti.com/index.php/CC31xx_%26_CC32xx_Advanced_Networking

int RawSocketRx(int iNumberOfPackets)
{
    SlSockAddrIn_t  Addr;
    unsigned char *pbuf = NULL;
    int recievedBytes = 0;
    int AddrSize = 0;
    int lRetVal = -1;
    int iSoc = -1;
    const int flag = 1;

    struct SlTimeval_t timeval;
    timeval.tv_sec =  0;             // Seconds
    timeval.tv_usec = 20000;     // Microseconds. 10000 microseconds resoultion

    pbuf = (unsigned char*)malloc(BUFFER_SIZE);

    /* create a raw-socket following the instructions given above*/
    iSoc = sl_Socket(SL_AF_INET, SL_SOCK_RAW, SL_IPPROTO_RAW);

    lRetVal = sl_SetSockOpt(iSoc,SL_IPPROTO_IP,SL_IP_HDRINCL, &flag, sizeof(flag));
    ASSERT_ON_ERROR(__LINE__, lRetVal);
 
   lRetVal = sl_SetSockOpt(iSoc,SL_SOL_SOCKET,SL_SO_RCVTIMEO, &timeval, sizeof(timeval));
   ASSERT_ON_ERROR(__LINE__, lRetVal);

    Addr.sin_family = SL_AF_INET;
    Addr.sin_port = sl_Htons((unsigned short)0);
    Addr.sin_addr.s_addr = sl_Htonl(INADDR_ANY);
    AddrSize = sizeof(SlSockAddrIn_t);
   
    sl_Connect(iSoc, ( SlSockAddr_t *)&Addr, AddrSize);

    while(iNumberOfPackets--)
    {
        memset(pbuf, 0, BUFFER_SIZE);
        recievedBytes = sl_Recv (iSoc, pbuf, BUFFER_SIZE, 0);

      UART_PRINT("[(PNum=%d) recievedBytes= %d] : \n\r",  iNumberOfPackets,recievedBytes);
  DUMP(pbuf,recievedBytes);
    }
 
    sl_Close(iSoc);
    free(pbuf);
   
    return SUCCESS;
}