[En-Nut-Discussion] SNTP problems

[tomek w]

Hi everyone.
I am working on some project now and i need to synchronise Ethernut board using SNTP.
I cut a little source code of  Lars H. Andersson's SNTP implementation but it doesn't work, neither the non-modified code.
What could be the problem? What i am doing wrong?
 
Here is part of my sorce code:
 
typedef struct _sntpframe sntpframe;
struct _sntpframe {
    u_char mode;
    u_char stratum;
    u_char poll;
    u_char precision;
    u_long root_delay;
    u_long root_dispersion;
    u_long reference_identifier;
    u_long reference_ts_sec;
    u_long reference_ts_frac;
    u_long originate_ts_sec;
    u_long originate_ts_frac;
    u_long receive_ts_sec;
    u_long receive_ts_frac;
    u_long transmit_ts_sec;
    u_long transmit_ts_frac;
};

sntpframe *data; 
u_long server_addr;
server_addr=inet_addr("150.254.183.15");
u_short     NTPort    = 123;
int len;
UDPSOCKET *sock = NULL; 
u_long rec_addr = 0;
u_short port; 
u_short bufsize = 256;
sock = NutUdpCreateSocket(0);
data->mode = 0x1B;
NutUdpSetSockOpt(sock, SO_RCVBUF, &bufsize, sizeof(bufsize));
NutUdpSendTo(sock, server_addr,NTPort, data, sizeof(*data));
len = NutUdpReceiveFrom(sock, &rec_addr, &port, data, sizeof(*data), 5000);
NutUdpDestroySocket(sock); 

It returns sth not equal to 0 for createsocket, 0 for udpsend and 0 for udpreceive.
I checked the server adress with windows ntp client and it works all the time.
Thanks for any help.

		
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