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|
/*=============================================================================|
| PROJECT SNAP7 1.4.0 |
|==============================================================================|
| Copyright (C) 2013, 2014 Davide Nardella |
| All rights reserved. |
|==============================================================================|
| SNAP7 is free software: you can redistribute it and/or modify |
| it under the terms of the Lesser GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| It means that you can distribute your commercial software linked with |
| SNAP7 without the requirement to distribute the source code of your |
| application and without the requirement that your application be itself |
| distributed under LGPL. |
| |
| SNAP7 is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| Lesser GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License and a |
| copy of Lesser GNU General Public License along with Snap7. |
| If not, see http://www.gnu.org/licenses/ |
|==============================================================================|
| |
| Active Partner Example |
| |
|=============================================================================*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "snap7.h"
#ifdef OS_WINDOWS
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
#define size 256
int cnt = 0;
byte Buffer[size];
S7Object Partner;
//------------------------------------------------------------------------------
// Usage syntax
//------------------------------------------------------------------------------
static void Usage()
{
printf("Usage\n");
printf(" APartner <PassiveIP>\n");
printf("Where\n");
printf(" <PassiveIP> is the address of the passive partner that we want to connect.\n");
printf("Note\n");
printf("- Local Address is meaningless\n");
printf("- Both Local TSAP and Remote TSAP are set to 0x1002\n");
printf("- You can create multiple active partner in the same\n");
printf(" program or across different programs.\n");
}
//------------------------------------------------------------------------------
// Simply fills the buffer with a progressive number
//------------------------------------------------------------------------------
void PrepareBuffer()
{
int i;
cnt++;
for (i = 0; i < size; i++)
Buffer[i] = cnt;
}
//------------------------------------------------------------------------------
// SysSleep (copied from snap_sysutils.cpp)
//------------------------------------------------------------------------------
void SysSleep(longword Delay_ms)
{
#ifdef OS_WINDOWS
Sleep(Delay_ms);
#else
struct timespec ts;
ts.tv_sec = (time_t)(Delay_ms / 1000);
ts.tv_nsec =(long)((Delay_ms - ts.tv_sec) * 1000000);
nanosleep(&ts, (struct timespec *)0);
#endif
}
//------------------------------------------------------------------------------
bool ParLinked()
{
int ParStatus;
Par_GetStatus(Partner, &ParStatus);
return ParStatus==par_linked;
}
//------------------------------------------------------------------------------
void PrintError(int Error)
{
char text[1024];
Par_ErrorText(Partner, text, 1024);
printf("%s\n",text);
}
//------------------------------------------------------------------------------
// Main
//------------------------------------------------------------------------------
int main(int argc, char* argv[])
{
int SndError = 0;
int Error;
// Get Progran args
if (argc!=2)
{
Usage();
return 1;
};
// Create the ACTIVE partner
Partner = Par_Create(1);
// Start
// Local Address for an active partner is meaningless, leave
// it always set to "0.0.0.0"
Error=Par_StartTo(Partner, "0.0.0.0", argv[1], 0x1002, 0x1002);
if (Error != 0)
{
PrintError(Error);
return 1;
}
// Endless loop : Exit with Ctrl-C
while (1)
{
while (!ParLinked())
{
printf("Connecting to %s ...\n",argv[1]);
SysSleep(500);
};
do
{
PrepareBuffer();
SndError = Par_BSend(Partner, 0x00000001, &Buffer, size);
if (SndError == 0)
printf("Succesfully sent %d bytes\n",size);
else
PrintError(SndError);
SysSleep(500);
} while (SndError == 0);
}
}
|
