27 /* A global IEC-Python gateway state, for use inside python_eval FBs*/

    27 /* A global IEC-Python gateway state, for use inside python_eval FBs*/

    28 static int PythonState;

    28 static int PythonState;

    29 #define PYTHON_LOCKED_BY_PYTHON 0

    29 #define PYTHON_LOCKED_BY_PYTHON 0

    30 #define PYTHON_LOCKED_BY_PLC 1

    30 #define PYTHON_LOCKED_BY_PLC 1

    31 #define PYTHON_MUSTWAKEUP 2

    31 #define PYTHON_MUSTWAKEUP 2

    32  

    33  

    33 /* Each python_eval FunctionBlock have it own state */

    34 /* Each python_eval FunctionBlock have it own state */

    34 #define PYTHON_FB_FREE 0

    35 #define PYTHON_FB_FREE 0

    35 #define PYTHON_FB_REQUESTED 1

    36 #define PYTHON_FB_REQUESTED 1

    36 #define PYTHON_FB_PROCESSING 2

    37 #define PYTHON_FB_PROCESSING 2

    53 		EvalFBs[i] = NULL;

    54 		EvalFBs[i] = NULL;

    54 }

    55 }

    55 

    56 

    56 void __cleanup_python()

    57 void __cleanup_python()

    57 {

    58 {

    58 }

    61 }

    59 

    62 

    60 void __retrieve_python()

    63 void __retrieve_python()

    61 {

    64 {

    62 	/* Check Python thread is not being 

    65 	/* Check Python thread is not being 

   171 	 	  /* or doesn't contain command */ 

   174 	 	  /* or doesn't contain command */ 

   172 	      data__->STATE != PYTHON_FB_REQUESTED)

   175 	      data__->STATE != PYTHON_FB_REQUESTED)

   173 	{

   176 	{

   174 		UnLockPython();

   177 		UnLockPython();

   175 		/* wait next FB to eval */

   178 		/* wait next FB to eval */

   176 		WaitPythonCommands();

   180 		WaitPythonCommands();

   177 		LockPython();

   183 		LockPython();

   178 	}

   184 	}

   179 	/* Mark block as processing */

   185 	/* Mark block as processing */

   180 	data__->STATE = PYTHON_FB_PROCESSING;

   186 	data__->STATE = PYTHON_FB_PROCESSING;

   181 	//printf("PythonIterator\n");

   187 	//printf("PythonIterator\n");