please dont rip this site

Scenix Lib IO OSI3 Tcpip ISX_UDP_FOR_SX28 Sxdemo.c

//AN23 Appendix B: UDP ‘C’ Code
//compile with Borland C++ builder 6.

#include <sys/types.h>
#include <errno.h>
#include <stdio.h>
#include <mem.h>

#define WIN32

#ifdef WIN32
#include <winsock.h>
#else
#include <sys/socket.h>
#include <netinet/in.h>
#endif

#define BUF_LEN 1024
#define DUMP_COMMAND0x10
#define SET_COMMAND0x20
#define GET_COMMAND0x30
#define HELLO_COMMAND0x40

extern int errno;

void print_help(char *prog) {
  printf("%s [-hedsg] ip - Send and receive UDP packets to an SX microcontroller.\n", prog);
  printf(" ip IP address of the SX in x.x.x.x notation\n");
  printf(" -h This help message.\n");
  printf(" -e Get the SX's hello message.\n");
  printf(" -d Dump the SX's register file.\n");
  printf(" -s addr value Set the register at the address to a certain value.\n");
  printf(" -g addr Get the value at the given address.\n");
  printf(" For the -s and -g commands the values must be given in decimal\n" );
}

unsigned int decodeAddress( char *a ) {
  char *dot;
  unsigned int addr = 0;
  dot = strchr(a,'.');
  if (!dot ) return 0;
  *dot = '\0';
  addr = atoi(a)<<24;
  a = dot + 1;
  dot = strchr(a,'.');
  if (!dot ) return 0;
  *dot = '\0';
  addr |= atoi(a)<<16;
  a = dot + 1;
  dot = strchr(a,'.');
  if (!dot ) return 0;
  *dot = '\0';
  addr |= atoi(a)<<8;
  a = dot + 1;
  addr |= atoi(a);
  return addr;
}

int main( int argc, char *argv[] ) {
  int err, i, j;
  int clientLen, lenReceived, commandLen;
  unsigned char buffer[BUF_LEN];
  int sock;
  struct sockaddr_in addr, clientAddr;
  unsigned char commandBuf[3];
  char command;
  unsigned char address, data;
  unsigned int ipAddr;
#ifdef WIN32
WSADATA lpWSAData;
#endif
  /* Decode the command line options. */
  if ( argc > 1 ) {
    if ( !strcmp( argv[1], "-d" ) ) {
      command = 'd';
      commandBuf[0] = DUMP_COMMAND;
      commandLen = 1;
      printf("Dumping the SX's register file\n");
    }
    else if ( !strcmp( argv[1], "-e" ) ) {
      command = 'e';
      commandBuf[0] = HELLO_COMMAND;
      commandLen = 1;
      printf("Reqesting hello message\n");
    }
    else if ( !strcmp( argv[1], "-s" ) && argc == 4 ) {
      command = 's';
      address = atoi( argv[2] );
      data = atoi( argv[3] );
      commandBuf[0] = SET_COMMAND;
      commandBuf[1] = address;
      commandBuf[2] = data;
      commandLen = 3;
      printf("Setting the register at address %2.2X to %2.2X\n", address, data);
    }
    else if ( !strcmp( argv[1], "-g" ) && argc == 3 ) {
      command = 'g';
      address = atoi( argv[2] );
      commandBuf[0] = GET_COMMAND;
      commandBuf[1] = address;
      commandLen = 2;
      printf("Getting the register at address %2.2X\n", address);
    }
    else {
      print_help(argv[0]);
      return 1;
    }
  }
  else {
    print_help(argv[0]);
    return 1;
  }

#ifdef WIN32
  /* Windows requires that winsock be initialized. */
  err = WSAStartup (0x0101, &lpWSAData);
  if ( err != 0 ) {
    printf("Cannot open WinSock\n");
    return 1;
  }
#endif

  /* Get the IP address of the destination. */
  ipAddr = decodeAddress( argv[argc-1] );
  if ( ipAddr == 0 ) {
    printf("Invalid IP address\n");
    return 1;
  }
  printf("IP address of SX: %d.%d.%d.%d\n", (ipAddr&0xff000000)>>24,(ipAddr&0x00ff0000)>>16, (ipAddr&0x0000ff00)>>8, ipAddr&0x000000ff );
  clientLen = sizeof( clientAddr );
  sock = socket(AF_INET, SOCK_DGRAM, 0);
  if ( sock < 0 ) {
    perror("socket");
    return 1;
  }

  memset( (char*) &addr, 0, sizeof( addr ) );
  memset( (char*) &clientAddr, 0, sizeof( clientAddr ) );
  addr.sin_family = AF_INET;
  addr.sin_port = htons(1024);
  addr.sin_addr.s_addr = INADDR_ANY;
  printf("Connecting to local port %d\n", ntohs(addr.sin_port) );
  err = bind( sock, (struct sockaddr*) &addr, sizeof(addr) );
  if ( err == -1 ) {
    perror("bind");
    return 1;
  }
  clientAddr.sin_family = AF_INET;
  clientAddr.sin_port = htons(280);
  printf("Using port %d on the SX\n", ntohs(clientAddr.sin_port) );
  clientAddr.sin_addr.s_addr = htonl( ipAddr );
  printf("Sending command\n" );
  if (sendto( sock, &commandBuf, commandLen, 0, (struct sockaddr*)&clientAddr,sizeof( clientAddr )) == -1 ) {
    perror("sendto");
    return 1;
  }
  if ( command == 's' ) {
    printf("Set command sent\n");
    return 0;
  }
  printf("Starting receive\n");
  lenReceived = recvfrom( sock, &buffer, BUF_LEN, 0, (struct sockaddr*)&clientAddr, &clientLen);
  if ( command == 'e' ) {
    printf("Hello message from the SX: %s\n", &buffer );
  }
  else if ( command == 'd' ) {
    if ( lenReceived != 192 ) {
      printf("No enough data received. Expected 192 bytes.\n" );
      return 1;
    }
    for ( i = 0; i < 8; i++ ) printf("$%2X: %2X\n", i, buffer[i] );
    for ( i = 0; i < 16; i++ ) {
      printf("$%2.2X: ", i + 16 );
      for ( j = 0; j < 8; j++ ) printf("%2.2X ", buffer[8 + i + (j * 24)] );
      printf("\n");
    }
  }
  else if ( command == 'g' ) {
    if ( lenReceived != 1 ) {
      printf("No enough data received. Expected 1 byte.\n" );
      return 1;
    }
    printf("Register value: %2.2X\n", buffer[0]);
  }
  return 0;
}


file: /Techref/scenix/lib/io/osi3/tcpip/iSX_udp_for_sx28/sxdemo.c, 5KB, , updated: 2005/8/19 17:13, local time: 2024/12/2 06:53,
TOP NEW HELP FIND: 
18.97.14.81:LOG IN

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.sxlist.com/techref/scenix/lib/io/osi3/tcpip/iSX_udp_for_sx28/sxdemo.c"> scenix lib io osi3 tcpip iSX_udp_for_sx28 sxdemo</A>

Did you find what you needed?

 

Welcome to sxlist.com!


Site supported by
sales, advertizing,
& kind contributors
just like you!

Please don't rip/copy
(here's why

Copies of the site on CD
are available at minimal cost.
 

Welcome to www.sxlist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .