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TCP "tcp_check_send" Problem

Mohammad Farahani

Hi
I use TCP library and my project work fine but when i receive a command from my client on PC and process data in my Embedded System it not work fine and tcp_check_send() return false!!!!
This condition repeat in both Server and Client mode. I feel when i receive an command i must send any act before response it???


void send_data (U8 socket,U8 protocol, U8 p2val, U8 command) {
  U8 *sendbuf;

  /* UDP */
  if (protocol == UDP) {
    /* Start Connection */
    sendbuf = udp_get_buf (SENDLEN);
                sendbuf[0] = DIVICE_ADDREES_H;
                sendbuf[1] = DIVICE_ADDREES_L;
                sendbuf[2] = command;
    sendbuf[3] = p2val;
    udp_send (socket, rem_add.IP, 1001, sendbuf, SENDLEN);
  }

  /* TCP */
  else if (protocol == TCP) {
    /* Start Connection */
    switch (tcp_get_state(socket)) {
      case TCP_STATE_FREE:
      case TCP_STATE_CLOSED:
        tcp_connect (socket, rem_add.IP, rem_add.PORT, 0);
        break;
      case TCP_STATE_CONNECT:
        if (tcp_check_send (socket) != __FALSE) {
          sendbuf = tcp_get_buf(SENDLEN);
          sendbuf[0] = DIVICE_ADDREES_H;
                                        sendbuf[1] = DIVICE_ADDREES_L;
                                        sendbuf[2] = command;
          sendbuf[3] = p2val;
          tcp_send (socket, sendbuf, SENDLEN);
        }
        break;
    }
  }
}

Parents
  • 0 

    
U16 tcp_callback (U8 soc, U8 evt, U8 *ptr, U16 par) {
  /* This function is called by the TCP module on TCP event */
  /* Check the Net_Config.h for possible events.            */

  /* Make a reference to suppress compiler warnings. */
  soc = soc;
  par = par;
  evt = evt;
  ptr = ptr;

        if (soc != socket_tcp_client && soc != socket_tcp_server) {
    return (0);
  }

  switch (evt) {
    case TCP_EVT_DATA:
      /* TCP data frame has arrived, data is located at *par1, */
      /* data length is par2. Allocate buffer to send reply.   */
      procrec(soc,ptr);
      break;

    case TCP_EVT_CONREQ:
      /* Remote peer requested connect, accept it */
      return (1);

    case TCP_EVT_CONNECT:
      /* The TCP socket is connected */
      return (1);
  }

  return (0);
}


void procrec (U8 socket, U8 *buf) {
  U8 val=0;

  if(buf[0]!=DIVICE_ADDREES_H && buf[1]!=DIVICE_ADDREES_L){
    return;
  }

 switch (buf[2]) {
    case SET_OUT_AND:
      setOutVal (buf[3],1);
      break;
                case SET_OUT_OR:
      setOutVal (buf[3],0);
      break;
                case CLR_OUT:
      clrOutVal (buf[3]);
      break;
                case QUERY_OUT:
                        val=getOutVal();
      send_data(socket,protocol,80,QUERY_OUT);
      break;
                case QUERY_IN:
                        val=getInVal();
      send_data(socket,protocol,80,QUERY_IN);
      break;
  }
}

Reply
  • 0 

    
U16 tcp_callback (U8 soc, U8 evt, U8 *ptr, U16 par) {
  /* This function is called by the TCP module on TCP event */
  /* Check the Net_Config.h for possible events.            */

  /* Make a reference to suppress compiler warnings. */
  soc = soc;
  par = par;
  evt = evt;
  ptr = ptr;

        if (soc != socket_tcp_client && soc != socket_tcp_server) {
    return (0);
  }

  switch (evt) {
    case TCP_EVT_DATA:
      /* TCP data frame has arrived, data is located at *par1, */
      /* data length is par2. Allocate buffer to send reply.   */
      procrec(soc,ptr);
      break;

    case TCP_EVT_CONREQ:
      /* Remote peer requested connect, accept it */
      return (1);

    case TCP_EVT_CONNECT:
      /* The TCP socket is connected */
      return (1);
  }

  return (0);
}


void procrec (U8 socket, U8 *buf) {
  U8 val=0;

  if(buf[0]!=DIVICE_ADDREES_H && buf[1]!=DIVICE_ADDREES_L){
    return;
  }

 switch (buf[2]) {
    case SET_OUT_AND:
      setOutVal (buf[3],1);
      break;
                case SET_OUT_OR:
      setOutVal (buf[3],0);
      break;
                case CLR_OUT:
      clrOutVal (buf[3]);
      break;
                case QUERY_OUT:
                        val=getOutVal();
      send_data(socket,protocol,80,QUERY_OUT);
      break;
                case QUERY_IN:
                        val=getInVal();
      send_data(socket,protocol,80,QUERY_IN);
      break;
  }
}

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