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This commit is contained in:
Dave Nardella
2025-03-18 19:39:32 +01:00
committed by GitHub
parent ca65a00ab2
commit d3480ea2c5
2 changed files with 43 additions and 18 deletions
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57
utils/snap7_src/wrapper/oplc_snap7.cpp
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@@ -749,6 +749,7 @@ bool TS7Partner::Linked()
//****************************************************************************** //******************************************************************************
TS7Server *Server = NULL; TS7Server *Server = NULL;
bool s7Inited = false;
#define MAX_S7IO BUFFER_SIZE*8 #define MAX_S7IO BUFFER_SIZE*8
#define MK_SIZE 16 #define MK_SIZE 16
@@ -1248,32 +1249,56 @@ int S7API RWAreaCallBack(void* usrPtr, int Sender, int Operation, PS7Tag PTag, v
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
void initializeSnap7() void initializeSnap7()
{ {
s7mapUnusedVars(); if (!s7Inited)
{
s7mapUnusedVars();
Server = new TS7Server; Server = new TS7Server;
// With the next function we can limit the events to start/stop/client added etc. // With the next function we can limit the events to start/stop/client added etc.
// For a deep debug comment the line // For a deep debug comment the line
Server->SetEventsMask(0x3ff); Server->SetEventsMask(0x3ff);
// Set the Server events callback // Set the Server events callback
Server->SetEventsCallback(EventCallBack, NULL); Server->SetEventsCallback(EventCallBack, NULL);
// Shared resources: // Shared resources:
// We cannot directly share OpenPLC internal buffers, because: // We cannot directly share OpenPLC internal buffers, because:
// 1 - They are array of pointers to vars // 1 - They are array of pointers to vars
// 2 - The access would be not synchronized (i.e. not consistent) // 2 - The access would be not synchronized (i.e. not consistent)
// So, we will use a callback and, inside it, we will perform a synchronized data transfer. // So, we will use a callback and, inside it, we will perform a synchronized data transfer.
Server->SetRWAreaCallback(RWAreaCallBack, NULL); Server->SetRWAreaCallback(RWAreaCallBack, NULL);
// Listen on S7 Port (102) s7Inited = true;
Server->StartTo("0.0.0.0"); // Success or fail will be logged into EventCallBack }
} }
//------------------------------------------------------------------------------
// Snap7 Server start
//------------------------------------------------------------------------------
void startSnap7()
{
// Listen on S7 Port 102.
// If Server is already running the command will be ignored.
if (s7Inited)
Server->StartTo("0.0.0.0"); // Success or fail will be logged into EventCallBack
}
//------------------------------------------------------------------------------
// Snap7 Server stop
//------------------------------------------------------------------------------
void stopSnap7()
{
// If Server is already stopped the command will be ignored.
if (s7Inited)
Server->Stop();
}
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
// Snap7 Server destruction // Snap7 Server destruction
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
void finalizeSnap7() void finalizeSnap7()
{ {
if (Server != NULL) if (s7Inited)
{ {
s7Inited = false;
Server->Stop(); Server->Stop();
delete Server; delete Server;
Server = NULL; Server = NULL;

4
utils/snap7_src/wrapper/oplc_snap7.h
View File

@@ -943,8 +943,8 @@ typedef TS7Partner *PS7Partner;
void initializeSnap7(); void initializeSnap7();
void finalizeSnap7(); void finalizeSnap7();
void startSnap7();
void stopSnap7();
#endif // __cplusplus #endif // __cplusplus
#endif // snap7_h #endif // snap7_h