Re: rabbit 5000 tcp client ucosII

Your stack for the tcp task is too small.  The safest is to use a 4KB stack, especially with DHCP.  I believe the current DC 10 releases are better about stack usage, so you could possibly get away with a 2KB stack for the TCP task.  I can almost guarantee that 512 bytes isn't enough.

-Tom


On Jan 24, 2013, at 5:11 AM, gangben wrote:

> Hi guys I want to write a tcp client with the rabbit.
> 
> It has a simple functionallity it shall connect to a nodeJS server via
> localnetwork and send the input from the uart interface.
> 
> In my example here I start ucosII and have 2 tasks one that is counting
> just some numbers and the other one shall keep the tcp connection alive
> with tcp_tick();
> But here comes my problem it always says to me that the rabbit cannot
> open the tcp connection, tcp_open() fails
> 
> What am I doing wrong?
> 
> #define USE_LINKLOCAL
> #define TCPCONFIG                  1
> #define _PRIMARY_STATIC_IP           "192.168.1.2"
> #define _PRIMARY_NETMASK           "255.255.255.0"
> #define MY_GATEWAY                   "192.168.1.1"
> #define MY_NAMESERVER               "0.0.0.0"
> 
> #define TARGET                          
> "192.168.1.222"
> #define PORT                              2222
> 
> #define AINBUFSIZE                       63
> #define AOUTBUFSIZE                      127
> #define BINBUFSIZE                     63
> #define BOUTBUFSIZE                      127
> #define CINBUFSIZE                     63
> #define COUTBUFSIZE                    127
> #define DINBUFSIZE                     63
> #define DOUTBUFSIZE                    127
> 
> //important macro for the tcp connection
> #memmap xmem
> 
> //libraries----------------------------------------------------------\
> --------
> 
> #use "dcrtcp.lib"
> #use "net.lib"
> #use "tcp.lib"
> #use "ucos2.lib"
> 
> //prototypes----------------------------------------------------------\
> --------
> 
> //main----------------------------------------------------------\
> --------
> 
> void print_task(void* ptr){
>     int i = 0;
>      while(1){
>        printf("%d\n", i);
>       i++;
>       OSTimeDly(100);
>    }
> }
> 
> void tcpConnect(void* ptr){
>    static tcp_Socket socket;
>    longword target_ip;
> 
>    if( 0L == (target_ip = resolve(TARGET)) ) {
>         printf( "ERROR: Cannot resolve \"%s\" into an IP
> address\n", TARGET );
>         exit(2);
>     }
> 
>    puts("ip address resolved\n");
> 
>    if(!tcp_open(, 0, target_ip, 2222, NULL)){
>        puts("tcp_open() failed\n");
>    }
> 
>    puts("Waiting for establishment\n");
> 
>    while(!sock_established() sock_bytesready()==-1){
>       tcp_tick();
>       puts(sockstate());
>       puts("\n");
>    }
> 
>    while(1){
>        tcp_tick();
>    }
> 
> }
> 
> main()
> {
>     OSInit();
>       sock_init();
> 
>    OSTaskCreate(print_task, NULL, 64,1);
>    OSTaskCreate(tcpConnect, NULL, 512,0);
> 
>    OSStart();
> }//end of main
> 
> Thank you I hope you can help me
> 
>