Commit f6dc8932 authored by Ivan Tyagov's avatar Ivan Tyagov

Add first example PLC's code for Beremiz IDE.

parent 90e7a335
<?xml version='1.0' encoding='utf-8'?>
<BeremizRoot xmlns:xsd="http://www.w3.org/2001/XMLSchema" URI_location="LOCAL://">
<TargetType/>
</BeremizRoot>
void LOGGER_init__(LOGGER *data__, BOOL retain) {
__INIT_VAR(data__->EN,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->ENO,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->TRIG,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->MSG,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->LEVEL,LOGLEVEL__INFO,retain)
__INIT_VAR(data__->TRIG0,__BOOL_LITERAL(FALSE),retain)
}
// Code part
void LOGGER_body__(LOGGER *data__) {
// Control execution
if (!__GET_VAR(data__->EN)) {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(FALSE));
return;
}
else {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(TRUE));
}
// Initialise TEMP variables
if ((__GET_VAR(data__->TRIG,) && !(__GET_VAR(data__->TRIG0,)))) {
#define GetFbVar(var,...) __GET_VAR(data__->var,__VA_ARGS__)
#define SetFbVar(var,val,...) __SET_VAR(data__->,var,__VA_ARGS__,val)
LogMessage(GetFbVar(LEVEL),(char*)GetFbVar(MSG, .body),GetFbVar(MSG, .len));
#undef GetFbVar
#undef SetFbVar
;
};
__SET_VAR(data__->,TRIG0,,__GET_VAR(data__->TRIG,));
goto __end;
__end:
return;
} // LOGGER_body__()
void PYTHON_EVAL_init__(PYTHON_EVAL *data__, BOOL retain) {
__INIT_VAR(data__->EN,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->ENO,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->TRIG,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->CODE,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->ACK,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->RESULT,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->STATE,0,retain)
__INIT_VAR(data__->BUFFER,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->PREBUFFER,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->TRIGM1,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->TRIGGED,__BOOL_LITERAL(FALSE),retain)
}
// Code part
void PYTHON_EVAL_body__(PYTHON_EVAL *data__) {
// Control execution
if (!__GET_VAR(data__->EN)) {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(FALSE));
return;
}
else {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(TRUE));
}
// Initialise TEMP variables
__IL_DEFVAR_T __IL_DEFVAR;
__IL_DEFVAR_T __IL_DEFVAR_BACK;
#define GetFbVar(var,...) __GET_VAR(data__->var,__VA_ARGS__)
#define SetFbVar(var,val,...) __SET_VAR(data__->,var,__VA_ARGS__,val)
extern void __PythonEvalFB(int, PYTHON_EVAL*);__PythonEvalFB(0, data__);
#undef GetFbVar
#undef SetFbVar
;
goto __end;
__end:
return;
} // PYTHON_EVAL_body__()
void PYTHON_POLL_init__(PYTHON_POLL *data__, BOOL retain) {
__INIT_VAR(data__->EN,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->ENO,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->TRIG,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->CODE,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->ACK,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->RESULT,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->STATE,0,retain)
__INIT_VAR(data__->BUFFER,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->PREBUFFER,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->TRIGM1,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->TRIGGED,__BOOL_LITERAL(FALSE),retain)
}
// Code part
void PYTHON_POLL_body__(PYTHON_POLL *data__) {
// Control execution
if (!__GET_VAR(data__->EN)) {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(FALSE));
return;
}
else {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(TRUE));
}
// Initialise TEMP variables
__IL_DEFVAR_T __IL_DEFVAR;
__IL_DEFVAR_T __IL_DEFVAR_BACK;
#define GetFbVar(var,...) __GET_VAR(data__->var,__VA_ARGS__)
#define SetFbVar(var,val,...) __SET_VAR(data__->,var,__VA_ARGS__,val)
extern void __PythonEvalFB(int, PYTHON_EVAL*);__PythonEvalFB(1,(PYTHON_EVAL*)(void*)data__);
#undef GetFbVar
#undef SetFbVar
;
goto __end;
__end:
return;
} // PYTHON_POLL_body__()
void PYTHON_GEAR_init__(PYTHON_GEAR *data__, BOOL retain) {
__INIT_VAR(data__->EN,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->ENO,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->N,0,retain)
__INIT_VAR(data__->TRIG,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->CODE,__STRING_LITERAL(0,""),retain)
__INIT_VAR(data__->ACK,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->RESULT,__STRING_LITERAL(0,""),retain)
PYTHON_EVAL_init__(&data__->PY_EVAL,retain);
__INIT_VAR(data__->COUNTER,0,retain)
__INIT_VAR(data__->_TMP_ADD10_OUT,0,retain)
__INIT_VAR(data__->_TMP_EQ13_OUT,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->_TMP_SEL15_OUT,0,retain)
__INIT_VAR(data__->_TMP_AND7_OUT,__BOOL_LITERAL(FALSE),retain)
}
// Code part
void PYTHON_GEAR_body__(PYTHON_GEAR *data__) {
// Control execution
if (!__GET_VAR(data__->EN)) {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(FALSE));
return;
}
else {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(TRUE));
}
// Initialise TEMP variables
__SET_VAR(data__->,_TMP_ADD10_OUT,,ADD__UINT__UINT(
(BOOL)__BOOL_LITERAL(TRUE),
NULL,
(UINT)2,
(UINT)__GET_VAR(data__->COUNTER,),
(UINT)1));
__SET_VAR(data__->,_TMP_EQ13_OUT,,EQ__BOOL__UINT(
(BOOL)__BOOL_LITERAL(TRUE),
NULL,
(UINT)2,
(UINT)__GET_VAR(data__->N,),
(UINT)__GET_VAR(data__->_TMP_ADD10_OUT,)));
__SET_VAR(data__->,_TMP_SEL15_OUT,,SEL__UINT__BOOL__UINT__UINT(
(BOOL)__BOOL_LITERAL(TRUE),
NULL,
(BOOL)__GET_VAR(data__->_TMP_EQ13_OUT,),
(UINT)__GET_VAR(data__->_TMP_ADD10_OUT,),
(UINT)0));
__SET_VAR(data__->,COUNTER,,__GET_VAR(data__->_TMP_SEL15_OUT,));
__SET_VAR(data__->,_TMP_AND7_OUT,,AND__BOOL__BOOL(
(BOOL)__BOOL_LITERAL(TRUE),
NULL,
(UINT)2,
(BOOL)__GET_VAR(data__->_TMP_EQ13_OUT,),
(BOOL)__GET_VAR(data__->TRIG,)));
__SET_VAR(data__->PY_EVAL.,TRIG,,__GET_VAR(data__->_TMP_AND7_OUT,));
__SET_VAR(data__->PY_EVAL.,CODE,,__GET_VAR(data__->CODE,));
PYTHON_EVAL_body__(&data__->PY_EVAL);
__SET_VAR(data__->,ACK,,__GET_VAR(data__->PY_EVAL.ACK,));
__SET_VAR(data__->,RESULT,,__GET_VAR(data__->PY_EVAL.RESULT,));
goto __end;
__end:
return;
} // PYTHON_GEAR_body__()
void COUNTERST_init__(COUNTERST *data__, BOOL retain) {
__INIT_VAR(data__->EN,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->ENO,__BOOL_LITERAL(TRUE),retain)
__INIT_VAR(data__->RESET,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->OUT,0,retain)
__INIT_VAR(data__->CNT,0,retain)
__INIT_EXTERNAL(INT,RESETCOUNTERVALUE,data__->RESETCOUNTERVALUE,retain)
}
// Code part
void COUNTERST_body__(COUNTERST *data__) {
// Control execution
if (!__GET_VAR(data__->EN)) {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(FALSE));
return;
}
else {
__SET_VAR(data__->,ENO,,__BOOL_LITERAL(TRUE));
}
// Initialise TEMP variables
if (__GET_VAR(data__->RESET,)) {
__SET_VAR(data__->,CNT,,__GET_EXTERNAL(data__->RESETCOUNTERVALUE,));
} else {
__SET_VAR(data__->,CNT,,(__GET_VAR(data__->CNT,) + 1));
};
__SET_VAR(data__->,OUT,,__GET_VAR(data__->CNT,));
goto __end;
__end:
return;
} // COUNTERST_body__()
void PLC_PRG_init__(PLC_PRG *data__, BOOL retain) {
__INIT_VAR(data__->RESET,__BOOL_LITERAL(FALSE),retain)
__INIT_VAR(data__->CNT0,0,retain)
__INIT_VAR(data__->CNT1,0,retain)
__INIT_VAR(data__->CNT2,0,retain)
__INIT_VAR(data__->CNT3,0,retain)
__INIT_VAR(data__->CNT4,0,retain)
COUNTERST_init__(&data__->COUNTERST0,retain);
}
// Code part
void PLC_PRG_body__(PLC_PRG *data__) {
// Initialise TEMP variables
__SET_VAR(data__->COUNTERST0.,RESET,,__GET_VAR(data__->RESET,));
COUNTERST_body__(&data__->COUNTERST0);
__SET_VAR(data__->,CNT0,,__GET_VAR(data__->COUNTERST0.OUT,));
goto __end;
__end:
return;
} // PLC_PRG_body__()
#include "beremiz.h"
#ifndef __POUS_H
#define __POUS_H
#include "accessor.h"
#include "iec_std_lib.h"
__DECLARE_ENUMERATED_TYPE(LOGLEVEL,
LOGLEVEL__CRITICAL,
LOGLEVEL__WARNING,
LOGLEVEL__INFO,
LOGLEVEL__DEBUG
)
// FUNCTION_BLOCK LOGGER
// Data part
typedef struct {
// FB Interface - IN, OUT, IN_OUT variables
__DECLARE_VAR(BOOL,EN)
__DECLARE_VAR(BOOL,ENO)
__DECLARE_VAR(BOOL,TRIG)
__DECLARE_VAR(STRING,MSG)
__DECLARE_VAR(LOGLEVEL,LEVEL)
// FB private variables - TEMP, private and located variables
__DECLARE_VAR(BOOL,TRIG0)
} LOGGER;
void LOGGER_init__(LOGGER *data__, BOOL retain);
// Code part
void LOGGER_body__(LOGGER *data__);
// FUNCTION_BLOCK PYTHON_EVAL
// Data part
typedef struct {
// FB Interface - IN, OUT, IN_OUT variables
__DECLARE_VAR(BOOL,EN)
__DECLARE_VAR(BOOL,ENO)
__DECLARE_VAR(BOOL,TRIG)
__DECLARE_VAR(STRING,CODE)
__DECLARE_VAR(BOOL,ACK)
__DECLARE_VAR(STRING,RESULT)
// FB private variables - TEMP, private and located variables
__DECLARE_VAR(DWORD,STATE)
__DECLARE_VAR(STRING,BUFFER)
__DECLARE_VAR(STRING,PREBUFFER)
__DECLARE_VAR(BOOL,TRIGM1)
__DECLARE_VAR(BOOL,TRIGGED)
} PYTHON_EVAL;
void PYTHON_EVAL_init__(PYTHON_EVAL *data__, BOOL retain);
// Code part
void PYTHON_EVAL_body__(PYTHON_EVAL *data__);
// FUNCTION_BLOCK PYTHON_POLL
// Data part
typedef struct {
// FB Interface - IN, OUT, IN_OUT variables
__DECLARE_VAR(BOOL,EN)
__DECLARE_VAR(BOOL,ENO)
__DECLARE_VAR(BOOL,TRIG)
__DECLARE_VAR(STRING,CODE)
__DECLARE_VAR(BOOL,ACK)
__DECLARE_VAR(STRING,RESULT)
// FB private variables - TEMP, private and located variables
__DECLARE_VAR(DWORD,STATE)
__DECLARE_VAR(STRING,BUFFER)
__DECLARE_VAR(STRING,PREBUFFER)
__DECLARE_VAR(BOOL,TRIGM1)
__DECLARE_VAR(BOOL,TRIGGED)
} PYTHON_POLL;
void PYTHON_POLL_init__(PYTHON_POLL *data__, BOOL retain);
// Code part
void PYTHON_POLL_body__(PYTHON_POLL *data__);
// FUNCTION_BLOCK PYTHON_GEAR
// Data part
typedef struct {
// FB Interface - IN, OUT, IN_OUT variables
__DECLARE_VAR(BOOL,EN)
__DECLARE_VAR(BOOL,ENO)
__DECLARE_VAR(UINT,N)
__DECLARE_VAR(BOOL,TRIG)
__DECLARE_VAR(STRING,CODE)
__DECLARE_VAR(BOOL,ACK)
__DECLARE_VAR(STRING,RESULT)
// FB private variables - TEMP, private and located variables
PYTHON_EVAL PY_EVAL;
__DECLARE_VAR(UINT,COUNTER)
__DECLARE_VAR(UINT,_TMP_ADD10_OUT)
__DECLARE_VAR(BOOL,_TMP_EQ13_OUT)
__DECLARE_VAR(UINT,_TMP_SEL15_OUT)
__DECLARE_VAR(BOOL,_TMP_AND7_OUT)
} PYTHON_GEAR;
void PYTHON_GEAR_init__(PYTHON_GEAR *data__, BOOL retain);
// Code part
void PYTHON_GEAR_body__(PYTHON_GEAR *data__);
// FUNCTION_BLOCK COUNTERST
// Data part
typedef struct {
// FB Interface - IN, OUT, IN_OUT variables
__DECLARE_VAR(BOOL,EN)
__DECLARE_VAR(BOOL,ENO)
__DECLARE_VAR(BOOL,RESET)
__DECLARE_VAR(INT,OUT)
// FB private variables - TEMP, private and located variables
__DECLARE_VAR(INT,CNT)
__DECLARE_EXTERNAL(INT,RESETCOUNTERVALUE)
} COUNTERST;
void COUNTERST_init__(COUNTERST *data__, BOOL retain);
// Code part
void COUNTERST_body__(COUNTERST *data__);
// PROGRAM PLC_PRG
// Data part
typedef struct {
// PROGRAM Interface - IN, OUT, IN_OUT variables
__DECLARE_VAR(BOOL,RESET)
__DECLARE_VAR(INT,CNT0)
__DECLARE_VAR(INT,CNT1)
__DECLARE_VAR(INT,CNT2)
__DECLARE_VAR(INT,CNT3)
__DECLARE_VAR(INT,CNT4)
// PROGRAM private variables - TEMP, private and located variables
COUNTERST COUNTERST0;
} PLC_PRG;
void PLC_PRG_init__(PLC_PRG *data__, BOOL retain);
// Code part
void PLC_PRG_body__(PLC_PRG *data__);
#endif //__POUS_H
// Programs
0;CONFIG.RESOURCE1.INSTANCE0;PLC_PRG;
// Variables
0;VAR;CONFIG.RESETCOUNTERVALUE;CONFIG.RESETCOUNTERVALUE;INT;INT;
1;FB;CONFIG.RESOURCE1.INSTANCE0;CONFIG.RESOURCE1.INSTANCE0;PLC_PRG;;
2;VAR;CONFIG.RESOURCE1.INSTANCE0.RESET;CONFIG.RESOURCE1.INSTANCE0.RESET;BOOL;BOOL;
3;VAR;CONFIG.RESOURCE1.INSTANCE0.CNT0;CONFIG.RESOURCE1.INSTANCE0.CNT0;INT;INT;
4;VAR;CONFIG.RESOURCE1.INSTANCE0.CNT1;CONFIG.RESOURCE1.INSTANCE0.CNT1;INT;INT;
5;VAR;CONFIG.RESOURCE1.INSTANCE0.CNT2;CONFIG.RESOURCE1.INSTANCE0.CNT2;INT;INT;
6;VAR;CONFIG.RESOURCE1.INSTANCE0.CNT3;CONFIG.RESOURCE1.INSTANCE0.CNT3;INT;INT;
7;VAR;CONFIG.RESOURCE1.INSTANCE0.CNT4;CONFIG.RESOURCE1.INSTANCE0.CNT4;INT;INT;
8;FB;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0;COUNTERST;;
9;VAR;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.EN;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.EN;BOOL;BOOL;
10;VAR;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.ENO;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.ENO;BOOL;BOOL;
11;VAR;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.RESET;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.RESET;BOOL;BOOL;
12;VAR;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.OUT;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.OUT;INT;INT;
13;VAR;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.CNT;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.CNT;INT;INT;
14;EXT;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.RESETCOUNTERVALUE;CONFIG.RESOURCE1.INSTANCE0.COUNTERST0.RESETCOUNTERVALUE;INT;INT;
// Ticktime
20000000
#ifndef _BEREMIZ_H_
#define _BEREMIZ_H_
/* Beremiz' header file for use by extensions */
#include "iec_types.h"
#define LOG_LEVELS 4
#define LOG_CRITICAL 0
#define LOG_WARNING 1
#define LOG_INFO 2
#define LOG_DEBUG 3
extern unsigned long long common_ticktime__;
#ifdef TARGET_LOGGING_DISABLE
static inline int LogMessage(uint8_t level, char* buf, uint32_t size)
{
(void)level;
(void)buf;
(void)size;
return 0;
}
#else
int LogMessage(uint8_t level, char* buf, uint32_t size);
#endif
long AtomicCompareExchange(long* atomicvar,long compared, long exchange);
#endif
/*******************************************/
/* FILE GENERATED BY iec2c */
/* Editing this file is not recommended... */
/*******************************************/
#include "iec_std_lib.h"
#include "accessor.h"
#include "POUS.h"
// CONFIGURATION CONFIG
__DECLARE_GLOBAL(INT,CONFIG,RESETCOUNTERVALUE)
void RESOURCE1_init__(void);
void config_init__(void) {
BOOL retain;
retain = 0;
__INIT_GLOBAL(INT,RESETCOUNTERVALUE,__INITIAL_VALUE(1000),retain)
RESOURCE1_init__();
}
void RESOURCE1_run__(unsigned long tick);
void config_run__(unsigned long tick) {
RESOURCE1_run__(tick);
}
unsigned long long common_ticktime__ = 20000000ULL * 1ULL; /*ns*/
unsigned long greatest_tick_count__ = (unsigned long)0UL; /*tick*/
#include "beremiz.h"
__DECLARE_GLOBAL_PROTOTYPE(INT,RESETCOUNTERVALUE)
FUNCTION_BLOCK CounterST
VAR_INPUT
Reset : BOOL;
END_VAR
VAR_OUTPUT
Out : INT;
END_VAR
VAR
Cnt : INT;
END_VAR
VAR_EXTERNAL
ResetCounterValue : INT;
END_VAR
IF Reset THEN
Cnt := ResetCounterValue;
ELSE
Cnt := Cnt + 1;
END_IF;
Out := Cnt;
END_FUNCTION_BLOCK
PROGRAM plc_prg
VAR_INPUT
Reset : BOOL;
END_VAR
VAR_OUTPUT
Cnt0 : INT;
Cnt1 : INT;
Cnt2 : INT;
Cnt3 : INT;
Cnt4 : INT;
END_VAR
VAR
CounterST0 : CounterST;
END_VAR
CounterST0(Reset := Reset);
Cnt0 := CounterST0.Out;
END_PROGRAM
CONFIGURATION config
VAR_GLOBAL
ResetCounterValue : INT := 1000;
END_VAR
RESOURCE resource1 ON PLC
TASK task0(INTERVAL := T#20ms,PRIORITY := 0);
PROGRAM instance0 WITH task0 : plc_prg;
END_RESOURCE
END_CONFIGURATION
cb6baca0419e9cafc6316a11a81a0317
\ No newline at end of file
TYPE
LOGLEVEL : (CRITICAL, WARNING, INFO, DEBUG) := INFO;
END_TYPE
FUNCTION_BLOCK LOGGER
VAR_INPUT
TRIG : BOOL;
MSG : STRING;
LEVEL : LOGLEVEL := INFO;
END_VAR
VAR
TRIG0 : BOOL;
END_VAR
IF TRIG AND NOT TRIG0 THEN
{{
LogMessage(GetFbVar(LEVEL),(char*)GetFbVar(MSG, .body),GetFbVar(MSG, .len));
}}
END_IF;
TRIG0:=TRIG;
END_FUNCTION_BLOCK
FUNCTION_BLOCK python_eval
VAR_INPUT
TRIG : BOOL;
CODE : STRING;
END_VAR
VAR_OUTPUT
ACK : BOOL;
RESULT : STRING;
END_VAR
VAR
STATE : DWORD;
BUFFER : STRING;
PREBUFFER : STRING;
TRIGM1 : BOOL;
TRIGGED : BOOL;
END_VAR
{extern void __PythonEvalFB(int, PYTHON_EVAL*);__PythonEvalFB(0, data__);}
END_FUNCTION_BLOCK
FUNCTION_BLOCK python_poll
VAR_INPUT
TRIG : BOOL;
CODE : STRING;
END_VAR
VAR_OUTPUT
ACK : BOOL;
RESULT : STRING;
END_VAR
VAR
STATE : DWORD;
BUFFER : STRING;
PREBUFFER : STRING;
TRIGM1 : BOOL;
TRIGGED : BOOL;
END_VAR
{extern void __PythonEvalFB(int, PYTHON_EVAL*);__PythonEvalFB(1,(PYTHON_EVAL*)(void*)data__);}
END_FUNCTION_BLOCK
FUNCTION_BLOCK python_gear
VAR_INPUT
N : UINT;
TRIG : BOOL;
CODE : STRING;
END_VAR
VAR_OUTPUT
ACK : BOOL;
RESULT : STRING;
END_VAR
VAR
py_eval : python_eval;
COUNTER : UINT;
_TMP_ADD10_OUT : UINT;
_TMP_EQ13_OUT : BOOL;
_TMP_SEL15_OUT : UINT;
_TMP_AND7_OUT : BOOL;
END_VAR
_TMP_ADD10_OUT := ADD(COUNTER, 1);
_TMP_EQ13_OUT := EQ(N, _TMP_ADD10_OUT);
_TMP_SEL15_OUT := SEL(_TMP_EQ13_OUT, _TMP_ADD10_OUT, 0);
COUNTER := _TMP_SEL15_OUT;
_TMP_AND7_OUT := AND(_TMP_EQ13_OUT, TRIG);
py_eval(TRIG := _TMP_AND7_OUT, CODE := CODE);
ACK := py_eval.ACK;
RESULT := py_eval.RESULT;
END_FUNCTION_BLOCK
FUNCTION_BLOCK CounterST
VAR_INPUT
Reset : BOOL;
END_VAR
VAR_OUTPUT
Out : INT;
END_VAR
VAR
Cnt : INT;
END_VAR
VAR_EXTERNAL
ResetCounterValue : INT;
END_VAR
IF Reset THEN
Cnt := ResetCounterValue;
ELSE
Cnt := Cnt + 1;
END_IF;
Out := Cnt;
END_FUNCTION_BLOCK
PROGRAM plc_prg
VAR_INPUT
Reset : BOOL;
END_VAR
VAR_OUTPUT
Cnt0 : INT;
Cnt1 : INT;
Cnt2 : INT;
Cnt3 : INT;
Cnt4 : INT;
END_VAR
VAR
CounterST0 : CounterST;
END_VAR
CounterST0(Reset := Reset);
Cnt0 := CounterST0.Out;
END_PROGRAM
CONFIGURATION config
VAR_GLOBAL
ResetCounterValue : INT := 1000;
END_VAR
RESOURCE resource1 ON PLC
TASK task0(INTERVAL := T#20ms,PRIORITY := 0);
PROGRAM instance0 WITH task0 : plc_prg;
END_RESOURCE
END_CONFIGURATION
/*
* DEBUGGER code
*
* On "publish", when buffer is free, debugger stores arbitrary variables
* content into, and mark this buffer as filled
*
*
* Buffer content is read asynchronously, (from non real time part),
* and then buffer marked free again.
*
*
* */
#ifdef TARGET_DEBUG_AND_RETAIN_DISABLE
void __init_debug (void){}
void __cleanup_debug (void){}
void __retrieve_debug(void){}
void __publish_debug (void){}
#else
#include "iec_types_all.h"
#include "POUS.h"
/*for memcpy*/
#include <string.h>
#include <stdio.h>
#ifndef TARGET_ONLINE_DEBUG_DISABLE
#define BUFFER_SIZE 22
/* Atomically accessed variable for buffer state */
#define BUFFER_FREE 0
#define BUFFER_BUSY 1
static long buffer_state = BUFFER_FREE;
/* The buffer itself */
char debug_buffer[BUFFER_SIZE];
/* Buffer's cursor*/
static char* buffer_cursor = debug_buffer;
#endif
static unsigned int retain_offset = 0;
/***
* Declare programs
**/
extern PLC_PRG RESOURCE1__INSTANCE0;
/***
* Declare global variables from resources and conf
**/
extern __IEC_INT_t CONFIG__RESETCOUNTERVALUE;
extern PLC_PRG RESOURCE1__INSTANCE0;
typedef const struct {
void *ptr;
__IEC_types_enum type;
} dbgvardsc_t;
static dbgvardsc_t dbgvardsc[] = {
{&(CONFIG__RESETCOUNTERVALUE), INT_ENUM},
{&(RESOURCE1__INSTANCE0.RESET), BOOL_ENUM},
{&(RESOURCE1__INSTANCE0.CNT0), INT_ENUM},
{&(RESOURCE1__INSTANCE0.CNT1), INT_ENUM},
{&(RESOURCE1__INSTANCE0.CNT2), INT_ENUM},
{&(RESOURCE1__INSTANCE0.CNT3), INT_ENUM},
{&(RESOURCE1__INSTANCE0.CNT4), INT_ENUM},
{&(RESOURCE1__INSTANCE0.COUNTERST0.EN), BOOL_ENUM},
{&(RESOURCE1__INSTANCE0.COUNTERST0.ENO), BOOL_ENUM},
{&(RESOURCE1__INSTANCE0.COUNTERST0.RESET), BOOL_ENUM},
{&(RESOURCE1__INSTANCE0.COUNTERST0.OUT), INT_ENUM},
{&(RESOURCE1__INSTANCE0.COUNTERST0.CNT), INT_ENUM},
{&(RESOURCE1__INSTANCE0.COUNTERST0.RESETCOUNTERVALUE), INT_P_ENUM}
};
typedef void(*__for_each_variable_do_fp)(dbgvardsc_t*);
void __for_each_variable_do(__for_each_variable_do_fp fp)
{
unsigned int i;
for(i = 0; i < sizeof(dbgvardsc)/sizeof(dbgvardsc_t); i++){
dbgvardsc_t *dsc = &dbgvardsc[i];
if(dsc->type != UNKNOWN_ENUM)
(*fp)(dsc);
}
}
#define __Unpack_desc_type dbgvardsc_t
#define __Unpack_case_t(TYPENAME) \
case TYPENAME##_ENUM :\
*flags = ((__IEC_##TYPENAME##_t *)varp)->flags;\
forced_value_p = *real_value_p = &((__IEC_##TYPENAME##_t *)varp)->value;\
break;
#define __Unpack_case_p(TYPENAME)\
case TYPENAME##_O_ENUM :\
*flags = __IEC_OUTPUT_FLAG;\
case TYPENAME##_P_ENUM :\
*flags |= ((__IEC_##TYPENAME##_p *)varp)->flags;\
*real_value_p = ((__IEC_##TYPENAME##_p *)varp)->value;\
forced_value_p = &((__IEC_##TYPENAME##_p *)varp)->fvalue;\
break;
#define __Is_a_string(dsc) (dsc->type == STRING_ENUM) ||\
(dsc->type == STRING_P_ENUM) ||\
(dsc->type == STRING_O_ENUM)
static void* UnpackVar(__Unpack_desc_type *dsc, void **real_value_p, char *flags)
{
void *varp = dsc->ptr;
void *forced_value_p = NULL;
*flags = 0;
/* find data to copy*/
switch(dsc->type){
__ANY(__Unpack_case_t)
__ANY(__Unpack_case_p)
default:
break;
}
if (*flags & __IEC_FORCE_FLAG)
return forced_value_p;
return *real_value_p;
}
void Remind(unsigned int offset, unsigned int count, void * p);
void RemindIterator(dbgvardsc_t *dsc)
{
void *real_value_p = NULL;
char flags = 0;
UnpackVar(dsc, &real_value_p, &flags);
if(flags & __IEC_RETAIN_FLAG){
USINT size = __get_type_enum_size(dsc->type);
/* compute next cursor positon*/
unsigned int next_retain_offset = retain_offset + size;
/* if buffer not full */
Remind(retain_offset, size, real_value_p);
/* increment cursor according size*/
retain_offset = next_retain_offset;
}
}
extern int CheckRetainBuffer(void);
extern void InitRetain(void);
void __init_debug(void)
{
/* init local static vars */
#ifndef TARGET_ONLINE_DEBUG_DISABLE
buffer_cursor = debug_buffer;
buffer_state = BUFFER_FREE;
#endif
retain_offset = 0;
InitRetain();
/* Iterate over all variables to fill debug buffer */
if(CheckRetainBuffer()){
__for_each_variable_do(RemindIterator);
}else{
char mstr[] = "RETAIN memory invalid - defaults used";
LogMessage(LOG_WARNING, mstr, sizeof(mstr));
}
retain_offset = 0;
}
extern void InitiateDebugTransfer(void);
extern void CleanupRetain(void);
extern unsigned long __tick;
void __cleanup_debug(void)
{
#ifndef TARGET_ONLINE_DEBUG_DISABLE
buffer_cursor = debug_buffer;
InitiateDebugTransfer();
#endif
CleanupRetain();
}
void __retrieve_debug(void)
{
}
void Retain(unsigned int offset, unsigned int count, void * p);
static inline void BufferIterator(dbgvardsc_t *dsc, int do_debug)
{
void *real_value_p = NULL;
void *visible_value_p = NULL;
char flags = 0;
visible_value_p = UnpackVar(dsc, &real_value_p, &flags);
if(flags & ( __IEC_DEBUG_FLAG | __IEC_RETAIN_FLAG)){
USINT size = __get_type_enum_size(dsc->type);
#ifndef TARGET_ONLINE_DEBUG_DISABLE
if(flags & __IEC_DEBUG_FLAG){
/* copy visible variable to buffer */;
if(do_debug){
/* compute next cursor positon.
No need to check overflow, as BUFFER_SIZE
is computed large enough */
if(__Is_a_string(dsc)){
/* optimization for strings */
size = ((STRING*)visible_value_p)->len + 1;
}
char* next_cursor = buffer_cursor + size;
/* copy data to the buffer */
memcpy(buffer_cursor, visible_value_p, size);
/* increment cursor according size*/
buffer_cursor = next_cursor;
}
/* re-force real value of outputs (M and Q)*/
if((flags & __IEC_FORCE_FLAG) && (flags & __IEC_OUTPUT_FLAG)){
memcpy(real_value_p, visible_value_p, size);
}
}
#endif
if(flags & __IEC_RETAIN_FLAG){
/* compute next cursor positon*/
unsigned int next_retain_offset = retain_offset + size;
/* if buffer not full */
Retain(retain_offset, size, real_value_p);
/* increment cursor according size*/
retain_offset = next_retain_offset;
}
}
}
void DebugIterator(dbgvardsc_t *dsc){
BufferIterator(dsc, 1);
}
void RetainIterator(dbgvardsc_t *dsc){
BufferIterator(dsc, 0);
}
unsigned int retain_size = 0;
/* GetRetainSizeIterator */
void GetRetainSizeIterator(dbgvardsc_t *dsc)
{
void *real_value_p = NULL;
char flags = 0;
UnpackVar(dsc, &real_value_p, &flags);
if(flags & __IEC_RETAIN_FLAG){
USINT size = __get_type_enum_size(dsc->type);
/* Calc retain buffer size */
retain_size += size;
}
}
/* Return size of all retain variables */
unsigned int GetRetainSize(void)
{
__for_each_variable_do(GetRetainSizeIterator);
return retain_size;
}
extern void PLC_GetTime(IEC_TIME*);
extern int TryEnterDebugSection(void);
extern long AtomicCompareExchange(long*, long, long);
extern long long AtomicCompareExchange64(long long* , long long , long long);
extern void LeaveDebugSection(void);
extern void ValidateRetainBuffer(void);
extern void InValidateRetainBuffer(void);
void __publish_debug(void)
{
retain_offset = 0;
InValidateRetainBuffer();
#ifndef TARGET_ONLINE_DEBUG_DISABLE
/* Check there is no running debugger re-configuration */
if(TryEnterDebugSection()){
/* Lock buffer */
long latest_state = AtomicCompareExchange(
&buffer_state,
BUFFER_FREE,
BUFFER_BUSY);
/* If buffer was free */
if(latest_state == BUFFER_FREE)
{
/* Reset buffer cursor */
buffer_cursor = debug_buffer;
/* Iterate over all variables to fill debug buffer */
__for_each_variable_do(DebugIterator);
/* Leave debug section,
* Trigger asynchronous transmission
* (returns immediately) */
InitiateDebugTransfer(); /* size */
}else{
/* when not debugging, do only retain */
__for_each_variable_do(RetainIterator);
}
LeaveDebugSection();
}else
#endif
{
/* when not debugging, do only retain */
__for_each_variable_do(RetainIterator);
}
ValidateRetainBuffer();
}
#ifndef TARGET_ONLINE_DEBUG_DISABLE
#define __RegisterDebugVariable_case_t(TYPENAME) \
case TYPENAME##_ENUM :\
((__IEC_##TYPENAME##_t *)varp)->flags |= flags;\
if(force)\
((__IEC_##TYPENAME##_t *)varp)->value = *((TYPENAME *)force);\
break;
#define __RegisterDebugVariable_case_p(TYPENAME)\
case TYPENAME##_P_ENUM :\
((__IEC_##TYPENAME##_p *)varp)->flags |= flags;\
if(force)\
((__IEC_##TYPENAME##_p *)varp)->fvalue = *((TYPENAME *)force);\
break;\
case TYPENAME##_O_ENUM :\
((__IEC_##TYPENAME##_p *)varp)->flags |= flags;\
if(force){\
((__IEC_##TYPENAME##_p *)varp)->fvalue = *((TYPENAME *)force);\
*(((__IEC_##TYPENAME##_p *)varp)->value) = *((TYPENAME *)force);\
}\
break;
void RegisterDebugVariable(unsigned int idx, void* force)
{
if(idx < sizeof(dbgvardsc)/sizeof(dbgvardsc_t)){
unsigned char flags = force ?
__IEC_DEBUG_FLAG | __IEC_FORCE_FLAG :
__IEC_DEBUG_FLAG;
dbgvardsc_t *dsc = &dbgvardsc[idx];
void *varp = dsc->ptr;
switch(dsc->type){
__ANY(__RegisterDebugVariable_case_t)
__ANY(__RegisterDebugVariable_case_p)
default:
break;
}
}
}
#define __ResetDebugVariablesIterator_case_t(TYPENAME) \
case TYPENAME##_ENUM :\
((__IEC_##TYPENAME##_t *)varp)->flags &= ~(__IEC_DEBUG_FLAG|__IEC_FORCE_FLAG);\
break;
#define __ResetDebugVariablesIterator_case_p(TYPENAME)\
case TYPENAME##_P_ENUM :\
case TYPENAME##_O_ENUM :\
((__IEC_##TYPENAME##_p *)varp)->flags &= ~(__IEC_DEBUG_FLAG|__IEC_FORCE_FLAG);\
break;
void ResetDebugVariablesIterator(dbgvardsc_t *dsc)
{
/* force debug flag to 0*/
void *varp = dsc->ptr;
switch(dsc->type){
__ANY(__ResetDebugVariablesIterator_case_t)
__ANY(__ResetDebugVariablesIterator_case_p)
default:
break;
}
}
void ResetDebugVariables(void)
{
__for_each_variable_do(ResetDebugVariablesIterator);
}
void FreeDebugData(void)
{
/* atomically mark buffer as free */
AtomicCompareExchange(
&buffer_state,
BUFFER_BUSY,
BUFFER_FREE);
}
int WaitDebugData(unsigned long *tick);
/* Wait until debug data ready and return pointer to it */
int GetDebugData(unsigned long *tick, unsigned long *size, void **buffer){
int wait_error = WaitDebugData(tick);
if(!wait_error){
*size = buffer_cursor - debug_buffer;
*buffer = debug_buffer;
}
return wait_error;
}
#endif
#endif
/**
* Head of code common to all C targets
**/
#include "beremiz.h"
#include <string.h>
/*
* Prototypes of functions provided by generated C softPLC
**/
void config_run__(unsigned long tick);
void config_init__(void);
/*
* Prototypes of functions provided by generated target C code
* */
long long AtomicCompareExchange64(long long*, long long, long long);
void __init_debug(void);
void __cleanup_debug(void);
/*void __retrieve_debug(void);*/
void __publish_debug(void);
/*
* Variables used by generated C softPLC and plugins
**/
IEC_TIME __CURRENT_TIME;
IEC_BOOL __DEBUG = 0;
unsigned long __tick = 0;
char *PLC_ID = NULL;
/*
* Variable generated by C softPLC and plugins
**/
extern unsigned long greatest_tick_count__;
/* Help to quit cleanly when init fail at a certain level */
static int init_level = 0;
/*
* Prototypes of functions exported by plugins
**/
int __init_py_ext(int argc,char **argv);
void __cleanup_py_ext(void);
void __retrieve_py_ext(void);
void __publish_py_ext(void);
/*
* Retrieve input variables, run PLC and publish output variables
**/
void __run(void)
{
__tick++;
if (greatest_tick_count__)
__tick %= greatest_tick_count__;
__retrieve_py_ext();
/*__retrieve_debug();*/
config_run__(__tick);
__publish_debug();
__publish_py_ext();
}
/*
* Initialize variables according to PLC's default values,
* and then init plugins with that values
**/
int __init(int argc,char **argv)
{
int res = 0;
init_level = 0;
/* Effective tick time with 1ms default value */
if(!common_ticktime__)
common_ticktime__ = 1000000;
config_init__();
__init_debug();
init_level=1; if((res = __init_py_ext(argc,argv))){return res;}
return res;
}
/*
* Calls plugin cleanup proc.
**/
void __cleanup(void)
{
if(init_level >= 1) __cleanup_py_ext();
__cleanup_debug();
}
void PLC_GetTime(IEC_TIME *CURRENT_TIME);
void PLC_SetTimer(unsigned long long next, unsigned long long period);
/**
* Linux specific code
**/
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <signal.h>
#include <stdlib.h>
#include <pthread.h>
#include <locale.h>
#include <semaphore.h>
static sem_t Run_PLC;
long AtomicCompareExchange(long* atomicvar,long compared, long exchange)
{
return __sync_val_compare_and_swap(atomicvar, compared, exchange);
}
long long AtomicCompareExchange64(long long* atomicvar, long long compared, long long exchange)
{
return __sync_val_compare_and_swap(atomicvar, compared, exchange);
}
void PLC_GetTime(IEC_TIME *CURRENT_TIME)
{
struct timespec tmp;
clock_gettime(CLOCK_REALTIME, &tmp);
CURRENT_TIME->tv_sec = tmp.tv_sec;
CURRENT_TIME->tv_nsec = tmp.tv_nsec;
}
void PLC_timer_notify(sigval_t val)
{
PLC_GetTime(&__CURRENT_TIME);
sem_post(&Run_PLC);
}
timer_t PLC_timer;
void PLC_SetTimer(unsigned long long next, unsigned long long period)
{
struct itimerspec timerValues;
/*
printf("SetTimer(%lld,%lld)\n",next, period);
*/
memset (&timerValues, 0, sizeof (struct itimerspec));
{
#ifdef __lldiv_t_defined
lldiv_t nxt_div = lldiv(next, 1000000000);
lldiv_t period_div = lldiv(period, 1000000000);
timerValues.it_value.tv_sec = nxt_div.quot;
timerValues.it_value.tv_nsec = nxt_div.rem;
timerValues.it_interval.tv_sec = period_div.quot;
timerValues.it_interval.tv_nsec = period_div.rem;
#else
timerValues.it_value.tv_sec = next / 1000000000;
timerValues.it_value.tv_nsec = next % 1000000000;
timerValues.it_interval.tv_sec = period / 1000000000;
timerValues.it_interval.tv_nsec = period % 1000000000;
#endif
}
timer_settime (PLC_timer, 0, &timerValues, NULL);
}
//
void catch_signal(int sig)
{
// signal(SIGTERM, catch_signal);
signal(SIGINT, catch_signal);
printf("Got Signal %d\n",sig);
exit(0);
}
static unsigned long __debug_tick;
pthread_t PLC_thread;
static pthread_mutex_t python_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t python_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t debug_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t debug_mutex = PTHREAD_MUTEX_INITIALIZER;
int PLC_shutdown = 0;
int ForceSaveRetainReq(void) {
return PLC_shutdown;
}
void PLC_thread_proc(void *arg)
{
while (!PLC_shutdown) {
sem_wait(&Run_PLC);
__run();
}
pthread_exit(0);
}
#define maxval(a,b) ((a>b)?a:b)
int startPLC(int argc,char **argv)
{
struct sigevent sigev;
setlocale(LC_NUMERIC, "C");
PLC_shutdown = 0;
sem_init(&Run_PLC, 0, 0);
pthread_create(&PLC_thread, NULL, (void*) &PLC_thread_proc, NULL);
memset (&sigev, 0, sizeof (struct sigevent));
sigev.sigev_value.sival_int = 0;
sigev.sigev_notify = SIGEV_THREAD;
sigev.sigev_notify_attributes = NULL;
sigev.sigev_notify_function = PLC_timer_notify;
pthread_mutex_init(&debug_wait_mutex, NULL);
pthread_mutex_init(&debug_mutex, NULL);
pthread_mutex_init(&python_wait_mutex, NULL);
pthread_mutex_init(&python_mutex, NULL);
pthread_mutex_lock(&debug_wait_mutex);
pthread_mutex_lock(&python_wait_mutex);
timer_create (CLOCK_MONOTONIC, &sigev, &PLC_timer);
if( __init(argc,argv) == 0 ){
PLC_SetTimer(common_ticktime__,common_ticktime__);
/* install signal handler for manual break */
signal(SIGINT, catch_signal);
}else{
return 1;
}
return 0;
}
int TryEnterDebugSection(void)
{
if (pthread_mutex_trylock(&debug_mutex) == 0){
/* Only enter if debug active */
if(__DEBUG){
return 1;
}
pthread_mutex_unlock(&debug_mutex);
}
return 0;
}
void LeaveDebugSection(void)
{
pthread_mutex_unlock(&debug_mutex);
}
int stopPLC()
{
/* Stop the PLC */
PLC_shutdown = 1;
sem_post(&Run_PLC);
PLC_SetTimer(0,0);
pthread_join(PLC_thread, NULL);
sem_destroy(&Run_PLC);
timer_delete (PLC_timer);
__cleanup();
pthread_mutex_destroy(&debug_wait_mutex);
pthread_mutex_destroy(&debug_mutex);
pthread_mutex_destroy(&python_wait_mutex);
pthread_mutex_destroy(&python_mutex);
return 0;
}
extern unsigned long __tick;
int WaitDebugData(unsigned long *tick)
{
int res;
if (PLC_shutdown) return 1;
/* Wait signal from PLC thread */
res = pthread_mutex_lock(&debug_wait_mutex);
*tick = __debug_tick;
return res;
}
/* Called by PLC thread when debug_publish finished
* This is supposed to unlock debugger thread in WaitDebugData*/
void InitiateDebugTransfer()
{
/* remember tick */
__debug_tick = __tick;
/* signal debugger thread it can read data */
pthread_mutex_unlock(&debug_wait_mutex);
}
int suspendDebug(int disable)
{
/* Prevent PLC to enter debug code */
pthread_mutex_lock(&debug_mutex);
/*__DEBUG is protected by this mutex */
__DEBUG = !disable;
if (disable)
pthread_mutex_unlock(&debug_mutex);
return 0;
}
void resumeDebug(void)
{
__DEBUG = 1;
/* Let PLC enter debug code */
pthread_mutex_unlock(&debug_mutex);
}
/* from plc_python.c */
int WaitPythonCommands(void)
{
/* Wait signal from PLC thread */
return pthread_mutex_lock(&python_wait_mutex);
}
/* Called by PLC thread on each new python command*/
void UnBlockPythonCommands(void)
{
/* signal debugger thread it can read data */
pthread_mutex_unlock(&python_wait_mutex);
}
int TryLockPython(void)
{
return pthread_mutex_trylock(&python_mutex) == 0;
}
void UnLockPython(void)
{
pthread_mutex_unlock(&python_mutex);
}
void LockPython(void)
{
pthread_mutex_lock(&python_mutex);
}
/*
This file is part of Beremiz, a Integrated Development Environment for
programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
See COPYING.runtime
Copyright (C) 2018: Sergey Surkov <surkov.sv@summatechnology.ru>
Copyright (C) 2018: Andrey Skvortsov <andrej.skvortzov@gmail.com>
*/
#ifndef HAVE_RETAIN
#include <stdio.h>
#include <stdint.h>
#include <unistd.h>
#include "iec_types.h"
int GetRetainSize(void);
/* Retain buffer. */
FILE *retain_buffer;
const char rb_file[] = "retain_buffer_file";
const char rb_file_bckp[] = "retain_buffer_file.bak";
/* Retain header struct. */
struct retain_info_t {
uint32_t retain_size;
uint32_t hash_size;
uint8_t* hash;
uint32_t header_offset;
uint32_t header_crc;
};
/* Init retain info structure. */
struct retain_info_t retain_info;
/* CRC lookup table and initial state. */
static const uint32_t crc32_table[256] = {
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D,
};
uint32_t retain_crc;
/* Calculate CRC32 for len bytes from pointer buf with init starting value. */
uint32_t GenerateCRC32Sum(const void* buf, unsigned int len, uint32_t init)
{
uint32_t crc = ~init;
unsigned char* current = (unsigned char*) buf;
while (len--)
crc = crc32_table[(crc ^ *current++) & 0xFF] ^ (crc >> 8);
return ~crc;
}
/* Calc CRC32 for retain file byte by byte. */
int CheckFileCRC(FILE* file_buffer)
{
/* Set the magic constant for one-pass CRC calc according to ZIP CRC32. */
const uint32_t magic_number = 0x2144df1c;
/* CRC initial state. */
uint32_t calc_crc32 = 0;
char data_block = 0;
while(!feof(file_buffer)){
if (fread(&data_block, sizeof(data_block), 1, file_buffer))
calc_crc32 = GenerateCRC32Sum(&data_block, sizeof(char), calc_crc32);
}
/* Compare crc result with a magic number. */
return (calc_crc32 == magic_number) ? 1 : 0;
}
/* Compare current hash with hash from file byte by byte. */
int CheckFilehash(void)
{
int k,ret;
int offset = sizeof(retain_info.retain_size);
rewind(retain_buffer);
fseek(retain_buffer, offset , SEEK_SET);
uint32_t size;
ret = fread(&size, sizeof(size), 1, retain_buffer);
if (size != retain_info.hash_size)
return 0;
for(k = 0; k < retain_info.hash_size; k++){
uint8_t file_digit;
ret = fread(&file_digit, sizeof(char), 1, retain_buffer);
if (file_digit != *(retain_info.hash+k))
return 0;
}
return 1;
}
void InitRetain(void)
{
int i;
/* Get retain size in bytes */
retain_info.retain_size = GetRetainSize();
/* Hash stored in retain file as array of char in hex digits
(that's why we divide strlen in two). */
retain_info.hash_size = PLC_ID ? strlen(PLC_ID)/2 : 0;
//retain_info.hash_size = 0;
retain_info.hash = malloc(retain_info.hash_size);
/* Transform hash string into byte sequence. */
for (i = 0; i < retain_info.hash_size; i++) {
int byte = 0;
sscanf((PLC_ID + i*2), "%02X", &byte);
retain_info.hash[i] = byte;
}
/* Calc header offset. */
retain_info.header_offset = sizeof(retain_info.retain_size) + \
sizeof(retain_info.hash_size) + \
retain_info.hash_size;
/* Set header CRC initial state. */
retain_info.header_crc = 0;
/* Calc crc for header. */
retain_info.header_crc = GenerateCRC32Sum(
&retain_info.retain_size,
sizeof(retain_info.retain_size),
retain_info.header_crc);
retain_info.header_crc = GenerateCRC32Sum(
&retain_info.hash_size,
sizeof(retain_info.hash_size),
retain_info.header_crc);
retain_info.header_crc = GenerateCRC32Sum(
retain_info.hash,
retain_info.hash_size,
retain_info.header_crc);
}
void CleanupRetain(void)
{
/* Free hash memory. */
free(retain_info.hash);
}
int CheckRetainFile(const char * file)
{
retain_buffer = fopen(file, "rb");
if (retain_buffer) {
/* Check CRC32 and hash. */
if (CheckFileCRC(retain_buffer))
if (CheckFilehash())
return 1;
fclose(retain_buffer);
retain_buffer = NULL;
}
return 0;
}
int CheckRetainBuffer(void)
{
retain_buffer = NULL;
if (!retain_info.retain_size)
return 1;
/* Check latest retain file. */
if (CheckRetainFile(rb_file))
return 1;
/* Check if we have backup. */
if (CheckRetainFile(rb_file_bckp))
return 1;
/* We don't have any valid retain buffer - nothing to remind. */
return 0;
}
#ifndef FILE_RETAIN_SAVE_PERIOD_S
#define FILE_RETAIN_SAVE_PERIOD_S 1.0
#endif
static double CalcDiffSeconds(IEC_TIME* t1, IEC_TIME *t2)
{
IEC_TIME dt ={
t1->tv_sec - t2->tv_sec,
t1->tv_nsec - t2->tv_nsec
};
if ((dt.tv_nsec < -1000000000) || ((dt.tv_sec > 0) && (dt.tv_nsec < 0))){
dt.tv_sec--;
dt.tv_nsec += 1000000000;
}
if ((dt.tv_nsec > +1000000000) || ((dt.tv_sec < 0) && (dt.tv_nsec > 0))){
dt.tv_sec++;
dt.tv_nsec -= 1000000000;
}
return dt.tv_sec + 1e-9*dt.tv_nsec;
}
int RetainSaveNeeded(void)
{
int ret = 0;
static IEC_TIME last_save;
IEC_TIME now;
double diff_s;
/* no retain */
if (!retain_info.retain_size)
return 0;
/* periodic retain flush to avoid high I/O load */
PLC_GetTime(&now);
diff_s = CalcDiffSeconds(&now, &last_save);
if ((diff_s > FILE_RETAIN_SAVE_PERIOD_S) || ForceSaveRetainReq()) {
ret = 1;
last_save = now;
}
return ret;
}
void ValidateRetainBuffer(void)
{
if (!retain_buffer)
return;
/* Add retain data CRC to the end of buffer file. */
fseek(retain_buffer, 0, SEEK_END);
fwrite(&retain_crc, sizeof(uint32_t), 1, retain_buffer);
/* Sync file buffer and close file. */
#ifdef __WIN32
fflush(retain_buffer);
#else
fsync(fileno(retain_buffer));
#endif
fclose(retain_buffer);
retain_buffer = NULL;
}
void InValidateRetainBuffer(void)
{
if (!RetainSaveNeeded())
return;
/* Rename old retain file into *.bak if it exists. */
rename(rb_file, rb_file_bckp);
/* Set file CRC initial value. */
retain_crc = retain_info.header_crc;
/* Create new retain file. */
retain_buffer = fopen(rb_file, "wb+");
if (!retain_buffer) {
fprintf(stderr, "Failed to create retain file : %s\n", rb_file);
return;
}
/* Write header to the new file. */
fwrite(&retain_info.retain_size,
sizeof(retain_info.retain_size), 1, retain_buffer);
fwrite(&retain_info.hash_size,
sizeof(retain_info.hash_size), 1, retain_buffer);
fwrite(retain_info.hash ,
sizeof(char), retain_info.hash_size, retain_buffer);
}
void Retain(unsigned int offset, unsigned int count, void *p)
{
if (!retain_buffer)
return;
/* Generate CRC 32 for each data block. */
retain_crc = GenerateCRC32Sum(p, count, retain_crc);
/* Save current var in file. */
fseek(retain_buffer, retain_info.header_offset+offset, SEEK_SET);
fwrite(p, count, 1, retain_buffer);
}
void Remind(unsigned int offset, unsigned int count, void *p)
{
int ret;
/* Remind variable from file. */
fseek(retain_buffer, retain_info.header_offset+offset, SEEK_SET);
ret = fread((void *)p, count, 1, retain_buffer);
}
#endif // !HAVE_RETAIN
/**
* Tail of code common to all C targets
**/
/**
* LOGGING
**/
#ifndef TARGET_LOGGING_DISABLE
#ifndef LOG_BUFFER_SIZE
#define LOG_BUFFER_SIZE (1<<14) /*16Ko*/
#endif
#ifndef LOG_BUFFER_ATTRS
#define LOG_BUFFER_ATTRS
#endif
#define LOG_BUFFER_MASK (LOG_BUFFER_SIZE-1)
static char LogBuff[LOG_LEVELS][LOG_BUFFER_SIZE] LOG_BUFFER_ATTRS;
static void inline copy_to_log(uint8_t level, uint32_t buffpos, void* buf, uint32_t size){
if(buffpos + size < LOG_BUFFER_SIZE){
memcpy(&LogBuff[level][buffpos], buf, size);
}else{
uint32_t remaining = LOG_BUFFER_SIZE - buffpos;
memcpy(&LogBuff[level][buffpos], buf, remaining);
memcpy(LogBuff[level], (char*)buf + remaining, size - remaining);
}
}
static void inline copy_from_log(uint8_t level, uint32_t buffpos, void* buf, uint32_t size){
if(buffpos + size < LOG_BUFFER_SIZE){
memcpy(buf, &LogBuff[level][buffpos], size);
}else{
uint32_t remaining = LOG_BUFFER_SIZE - buffpos;
memcpy(buf, &LogBuff[level][buffpos], remaining);
memcpy((char*)buf + remaining, LogBuff[level], size - remaining);
}
}
/* Log buffer structure
|<-Tail1.msgsize->|<-sizeof(mTail)->|<--Tail2.msgsize-->|<-sizeof(mTail)->|...
| Message1 Body | Tail1 | Message2 Body | Tail2 |
*/
typedef struct {
uint32_t msgidx;
uint32_t msgsize;
unsigned long tick;
IEC_TIME time;
} mTail;
/* Log cursor : 64b
|63 ... 32|31 ... 0|
| Message | Buffer |
| counter | Index | */
static uint64_t LogCursor[LOG_LEVELS] LOG_BUFFER_ATTRS = {0x0,0x0,0x0,0x0};
void ResetLogCount(void) {
uint8_t level;
for(level=0;level<LOG_LEVELS;level++){
LogCursor[level] = 0;
}
}
/* Store one log message of give size */
int LogMessage(uint8_t level, char* buf, uint32_t size){
if(size < LOG_BUFFER_SIZE - sizeof(mTail)){
uint32_t buffpos;
uint64_t new_cursor, old_cursor;
mTail tail;
tail.msgsize = size;
tail.tick = __tick;
PLC_GetTime(&tail.time);
/* We cannot increment both msg index and string pointer
in a single atomic operation but we can detect having been interrupted.
So we can try with atomic compare and swap in a loop until operation
succeeds non interrupted */
do{
old_cursor = LogCursor[level];
buffpos = (uint32_t)old_cursor;
tail.msgidx = (old_cursor >> 32);
new_cursor = ((uint64_t)(tail.msgidx + 1)<<32)
| (uint64_t)((buffpos + size + sizeof(mTail)) & LOG_BUFFER_MASK);
}while(AtomicCompareExchange64(
(long long*)&LogCursor[level],
(long long)old_cursor,
(long long)new_cursor)!=(long long)old_cursor);
copy_to_log(level, buffpos, buf, size);
copy_to_log(level, (buffpos + size) & LOG_BUFFER_MASK, &tail, sizeof(mTail));
return 1; /* Success */
}else{
char mstr[] = "Logging error : message too big";
LogMessage(LOG_CRITICAL, mstr, sizeof(mstr));
}
return 0;
}
uint32_t GetLogCount(uint8_t level){
return (uint64_t)LogCursor[level] >> 32;
}
/* Return message size and content */
uint32_t GetLogMessage(uint8_t level, uint32_t msgidx, char* buf, uint32_t max_size, uint32_t* tick, uint32_t* tv_sec, uint32_t* tv_nsec){
uint64_t cursor = LogCursor[level];
if(cursor){
/* seach cursor */
uint32_t stailpos = (uint32_t)cursor;
uint32_t smsgidx;
mTail tail;
tail.msgidx = cursor >> 32;
tail.msgsize = 0;
/* Message search loop */
do {
smsgidx = tail.msgidx;
stailpos = (stailpos - sizeof(mTail) - tail.msgsize ) & LOG_BUFFER_MASK;
copy_from_log(level, stailpos, &tail, sizeof(mTail));
}while((tail.msgidx == smsgidx - 1) && (tail.msgidx > msgidx));
if(tail.msgidx == msgidx){
uint32_t sbuffpos = (stailpos - tail.msgsize ) & LOG_BUFFER_MASK;
uint32_t totalsize = tail.msgsize;
*tick = tail.tick;
*tv_sec = tail.time.tv_sec;
*tv_nsec = tail.time.tv_nsec;
copy_from_log(level, sbuffpos, buf,
totalsize > max_size ? max_size : totalsize);
return totalsize;
}
}
return 0;
}
#endif
#ifndef TARGET_EXT_SYNC_DISABLE
#define CALIBRATED -2
#define NOT_CALIBRATED -1
static int calibration_count = NOT_CALIBRATED;
static IEC_TIME cal_begin;
static long long Tsync = 0;
static long long FreqCorr = 0;
static int Nticks = 0;
static unsigned long last_tick = 0;
/*
* Called on each external periodic sync event
* make PLC tick synchronous with external sync
* ratio defines when PLC tick occurs between two external sync
* @param sync_align_ratio
* 0->100 : align ratio
* < 0 : no align, calibrate period
**/
void align_tick(int sync_align_ratio)
{
/*
printf("align_tick(%d)\n", calibrate);
*/
if(sync_align_ratio < 0){ /* Calibration */
if(calibration_count == CALIBRATED)
/* Re-calibration*/
calibration_count = NOT_CALIBRATED;
if(calibration_count == NOT_CALIBRATED)
/* Calibration start, get time*/
PLC_GetTime(&cal_begin);
calibration_count++;
}else{ /* do alignment (if possible) */
if(calibration_count >= 0){
/* End of calibration */
/* Get final time */
IEC_TIME cal_end;
PLC_GetTime(&cal_end);
/*adjust calibration_count*/
calibration_count++;
/* compute mean of Tsync, over calibration period */
Tsync = ((long long)(cal_end.tv_sec - cal_begin.tv_sec) * (long long)1000000000 +
(cal_end.tv_nsec - cal_begin.tv_nsec)) / calibration_count;
if( (Nticks = (Tsync / common_ticktime__)) > 0){
FreqCorr = (Tsync % common_ticktime__); /* to be divided by Nticks */
}else{
FreqCorr = Tsync - (common_ticktime__ % Tsync);
}
/*
printf("Tsync = %ld\n", Tsync);
printf("calibration_count = %d\n", calibration_count);
printf("Nticks = %d\n", Nticks);
*/
calibration_count = CALIBRATED;
}
if(calibration_count == CALIBRATED){
/* Get Elapsed time since last PLC tick (__CURRENT_TIME) */
IEC_TIME now;
long long elapsed;
long long Tcorr;
long long PhaseCorr;
long long PeriodicTcorr;
PLC_GetTime(&now);
elapsed = (now.tv_sec - __CURRENT_TIME.tv_sec) * 1000000000 + now.tv_nsec - __CURRENT_TIME.tv_nsec;
if(Nticks > 0){
PhaseCorr = elapsed - (common_ticktime__ + FreqCorr/Nticks)*sync_align_ratio/100; /* to be divided by Nticks */
Tcorr = common_ticktime__ + (PhaseCorr + FreqCorr) / Nticks;
if(Nticks < 2){
/* When Sync source period is near Tick time */
/* PhaseCorr may not be applied to Periodic time given to timer */
PeriodicTcorr = common_ticktime__ + FreqCorr / Nticks;
}else{
PeriodicTcorr = Tcorr;
}
}else if(__tick > last_tick){
last_tick = __tick;
PhaseCorr = elapsed - (Tsync*sync_align_ratio/100);
PeriodicTcorr = Tcorr = common_ticktime__ + PhaseCorr + FreqCorr;
}else{
/*PLC did not run meanwhile. Nothing to do*/
return;
}
/* DO ALIGNEMENT */
PLC_SetTimer(Tcorr - elapsed, PeriodicTcorr);
}
}
}
#endif
/*
* Python Asynchronous execution code
*
* PLC put python commands in a fifo, respecting execution order
* with the help of C pragmas inserted in python_eval FB code
*
* Buffer content is read asynchronously, (from non real time part),
* commands are executed and result stored for later use by PLC.
*
* In this implementation, fifo is a list of pointer to python_eval
* function blocks structures. Some local variables have been added in
* python_eval interface. We use those local variables as buffer and state
* flags.
*
* */
#include "iec_types_all.h"
#include "POUS.h"
#include <string.h>
/* The fifo (fixed size, as number of FB is fixed) */
static PYTHON_EVAL* EvalFBs[1];
/* Producer and consumer cursors */
static int Current_PLC_EvalFB;
static int Current_Python_EvalFB;
/* A global IEC-Python gateway state, for use inside python_eval FBs*/
static int PythonState;
#define PYTHON_LOCKED_BY_PYTHON 0
#define PYTHON_LOCKED_BY_PLC 1
#define PYTHON_MUSTWAKEUP 2
#define PYTHON_FINISHED 4
/* Each python_eval FunctionBlock have it own state */
#define PYTHON_FB_FREE 0
#define PYTHON_FB_REQUESTED 1
#define PYTHON_FB_PROCESSING 2
#define PYTHON_FB_ANSWERED 3
int WaitPythonCommands(void);
void UnBlockPythonCommands(void);
int TryLockPython(void);
void UnLockPython(void);
void LockPython(void);
int __init_py_ext()
{
int i;
/* Initialize cursors */
Current_Python_EvalFB = 0;
Current_PLC_EvalFB = 0;
PythonState = PYTHON_LOCKED_BY_PYTHON;
for(i = 0; i < 1; i++)
EvalFBs[i] = NULL;
return 0;
}
void __cleanup_py_ext()
{
PythonState = PYTHON_FINISHED;
UnBlockPythonCommands();
}
void __retrieve_py_ext()
{
/* Check Python thread is not being
* modifying internal python_eval data */
PythonState = TryLockPython() ?
PYTHON_LOCKED_BY_PLC :
PYTHON_LOCKED_BY_PYTHON;
/* If python thread _is_ in, then PythonState remains PYTHON_LOCKED_BY_PYTHON
* and python_eval will no do anything */
}
void __publish_py_ext()
{
if(PythonState & PYTHON_LOCKED_BY_PLC){
/* If runnig PLC did push something in the fifo*/
if(PythonState & PYTHON_MUSTWAKEUP){
/* WakeUp python thread */
UnBlockPythonCommands();
}
UnLockPython();
}
}
/**
* Called by the PLC, each time a python_eval
* FB instance is executed
*/
void __PythonEvalFB(int poll, PYTHON_EVAL* data__)
{
if(!__GET_VAR(data__->TRIG)){
/* ACK is False when TRIG is false, except a pulse when receiving result */
__SET_VAR(data__->, ACK,, 0);
}
/* detect rising edge on TRIG to trigger evaluation */
if(((__GET_VAR(data__->TRIG) && !__GET_VAR(data__->TRIGM1)) ||
/* polling is equivalent to trig on value rather than on rising edge*/
(poll && __GET_VAR(data__->TRIG) )) &&
/* trig only if not already trigged */
__GET_VAR(data__->TRIGGED) == 0){
/* mark as trigged */
__SET_VAR(data__->, TRIGGED,, 1);
/* make a safe copy of the code */
__SET_VAR(data__->, PREBUFFER,, __GET_VAR(data__->CODE));
}
/* retain value for next rising edge detection */
__SET_VAR(data__->, TRIGM1,, __GET_VAR(data__->TRIG));
/* python thread is not in ? */
if( PythonState & PYTHON_LOCKED_BY_PLC){
/* if some answer are waiting, publish*/
if(__GET_VAR(data__->STATE) == PYTHON_FB_ANSWERED){
/* Copy buffer content into result*/
__SET_VAR(data__->, RESULT,, __GET_VAR(data__->BUFFER));
/* signal result presence to PLC*/
__SET_VAR(data__->, ACK,, 1);
/* Mark as free */
__SET_VAR(data__->, STATE,, PYTHON_FB_FREE);
/* mark as not trigged */
if(!poll)
__SET_VAR(data__->, TRIGGED,, 0);
/*printf("__PythonEvalFB pop %d - %*s\n",Current_PLC_EvalFB, data__->BUFFER.len, data__->BUFFER.body);*/
}else if(poll){
/* when in polling, no answer == ack down */
__SET_VAR(data__->, ACK,, 0);
}
/* got the order to act ?*/
if(__GET_VAR(data__->TRIGGED) == 1 &&
/* and not already being processed */
__GET_VAR(data__->STATE) == PYTHON_FB_FREE)
{
/* Enter the block in the fifo
* Don't have to check if fifo cell is free
* as fifo size == FB count, and a FB cannot
* be requested twice */
EvalFBs[Current_PLC_EvalFB] = data__;
/* copy into BUFFER local*/
__SET_VAR(data__->, BUFFER,, __GET_VAR(data__->PREBUFFER));
/* Set ACK pin to low so that we can set a rising edge on result */
if(!poll){
/* when not polling, a new answer imply reseting ack*/
__SET_VAR(data__->, ACK,, 0);
}else{
/* when in polling, acting reset trigger */
__SET_VAR(data__->, TRIGGED,, 0);
}
/* Mark FB busy */
__SET_VAR(data__->, STATE,, PYTHON_FB_REQUESTED);
/* Have to wakeup python thread in case he was asleep */
PythonState |= PYTHON_MUSTWAKEUP;
/*printf("__PythonEvalFB push %d - %*s\n",Current_PLC_EvalFB, data__->BUFFER.len, data__->BUFFER.body);*/
/* Get a new line */
Current_PLC_EvalFB = (Current_PLC_EvalFB + 1) % 1;
}
}
}
char* PythonIterator(char* result, void** id)
{
char* next_command;
PYTHON_EVAL* data__;
//printf("PythonIterator result %s\n", result);
/*emergency exit*/
if(PythonState & PYTHON_FINISHED) return NULL;
/* take python mutex to prevent changing PLC data while PLC running */
LockPython();
/* Get current FB */
data__ = EvalFBs[Current_Python_EvalFB];
if(data__ && /* may be null at first run */
__GET_VAR(data__->STATE) == PYTHON_FB_PROCESSING){ /* some answer awaited*/
/* If result not None */
if(result){
/* Get results len */
__SET_VAR(data__->, BUFFER, .len, strlen(result));
/* prevent results overrun */
if(__GET_VAR(data__->BUFFER, .len) > STR_MAX_LEN)
{
__SET_VAR(data__->, BUFFER, .len, STR_MAX_LEN);
/* TODO : signal error */
}
/* Copy results to buffer */
strncpy((char*)__GET_VAR(data__->BUFFER, .body), result, __GET_VAR(data__->BUFFER,.len));
}else{
__SET_VAR(data__->, BUFFER, .len, 0);
}
/* remove block from fifo*/
EvalFBs[Current_Python_EvalFB] = NULL;
/* Mark block as answered */
__SET_VAR(data__->, STATE,, PYTHON_FB_ANSWERED);
/* Get a new line */
Current_Python_EvalFB = (Current_Python_EvalFB + 1) % 1;
//printf("PythonIterator ++ Current_Python_EvalFB %d\n", Current_Python_EvalFB);
}
/* while next slot is empty */
while(((data__ = EvalFBs[Current_Python_EvalFB]) == NULL) ||
/* or doesn't contain command */
__GET_VAR(data__->STATE) != PYTHON_FB_REQUESTED)
{
UnLockPython();
/* wait next FB to eval */
//printf("PythonIterator wait\n");
if(WaitPythonCommands()) return NULL;
/*emergency exit*/
if(PythonState & PYTHON_FINISHED) return NULL;
LockPython();
}
/* Mark block as processing */
__SET_VAR(data__->, STATE,, PYTHON_FB_PROCESSING);
//printf("PythonIterator\n");
/* make BUFFER a null terminated string */
__SET_VAR(data__->, BUFFER, .body[__GET_VAR(data__->BUFFER, .len)], 0);
/* next command is BUFFER */
next_command = (char*)__GET_VAR(data__->BUFFER, .body);
*id=data__;
/* free python mutex */
UnLockPython();
/* return the next command to eval */
return next_command;
}
/*******************************************/
/* FILE GENERATED BY iec2c */
/* Editing this file is not recommended... */
/*******************************************/
#include "iec_std_lib.h"
// RESOURCE RESOURCE1
extern unsigned long long common_ticktime__;
#include "accessor.h"
#include "POUS.h"
#include "config.h"
#include "POUS.c"
BOOL TASK0;
PLC_PRG RESOURCE1__INSTANCE0;
#define INSTANCE0 RESOURCE1__INSTANCE0
void RESOURCE1_init__(void) {
BOOL retain;
retain = 0;
TASK0 = __BOOL_LITERAL(FALSE);
PLC_PRG_init__(&INSTANCE0,retain);
}
void RESOURCE1_run__(unsigned long tick) {
TASK0 = !(tick % 1);
if (TASK0) {
PLC_PRG_body__(&INSTANCE0);
}
}
<?xml version='1.0' encoding='utf-8'?>
<project xmlns:ns1="http://www.plcopen.org/xml/tc6_0201" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://www.plcopen.org/xml/tc6_0201">
<fileHeader companyName="Unknown" productName="Unnamed" productVersion="1" creationDateTime="2021-05-14T14:33:11"/>
<contentHeader name="Counter (OSIE)" modificationDateTime="2021-05-17T11:58:28">
<coordinateInfo>
<fbd>
<scaling x="0" y="0"/>
</fbd>
<ld>
<scaling x="0" y="0"/>
</ld>
<sfc>
<scaling x="0" y="0"/>
</sfc>
</coordinateInfo>
</contentHeader>
<types>
<dataTypes/>
<pous>
<pou name="plc_prg" pouType="program">
<interface>
<inputVars>
<variable name="Reset">
<type>
<BOOL/>
</type>
</variable>
</inputVars>
<outputVars>
<variable name="Cnt0">
<type>
<INT/>
</type>
</variable>
<variable name="Cnt1">
<type>
<INT/>
</type>
</variable>
<variable name="Cnt2">
<type>
<INT/>
</type>
</variable>
<variable name="Cnt3">
<type>
<INT/>
</type>
</variable>
<variable name="Cnt4">
<type>
<INT/>
</type>
</variable>
</outputVars>
<localVars>
<variable name="CounterST0">
<type>
<derived name="CounterST"/>
</type>
</variable>
</localVars>
</interface>
<body>
<FBD>
<comment localId="1" height="143" width="201">
<position x="378" y="162"/>
<content>
<xhtml:p><![CDATA[Test Ivan: this PLC will run an increasing counter unless a Reset is switched On (then counter will be reset).]]></xhtml:p>
</content>
</comment>
<block localId="2" typeName="CounterST" instanceName="CounterST0" executionOrderId="0" height="109" width="99">
<position x="122" y="192"/>
<inputVariables>
<variable formalParameter="Reset">
<connectionPointIn>
<relPosition x="0" y="64"/>
<connection refLocalId="3">
<position x="122" y="256"/>
<position x="51" y="256"/>
</connection>
</connectionPointIn>
</variable>
</inputVariables>
<inOutVariables/>
<outputVariables>
<variable formalParameter="Out">
<connectionPointOut>
<relPosition x="99" y="64"/>
</connectionPointOut>
</variable>
</outputVariables>
</block>
<inVariable localId="3" executionOrderId="0" height="24" width="50" negated="false">
<position x="1" y="244"/>
<connectionPointOut>
<relPosition x="50" y="12"/>
</connectionPointOut>
<expression>Reset</expression>
</inVariable>
<outVariable localId="4" executionOrderId="0" height="24" width="42" negated="false">
<position x="284" y="244"/>
<connectionPointIn>
<relPosition x="0" y="12"/>
<connection refLocalId="2" formalParameter="Out">
<position x="284" y="256"/>
<position x="221" y="256"/>
</connection>
</connectionPointIn>
<expression>Cnt0</expression>
</outVariable>
</FBD>
</body>
</pou>
<pou name="CounterST" pouType="functionBlock">
<interface>
<inputVars>
<variable name="Reset">
<type>
<BOOL/>
</type>
</variable>
</inputVars>
<outputVars>
<variable name="Out">
<type>
<INT/>
</type>
</variable>
</outputVars>
<localVars>
<variable name="Cnt">
<type>
<INT/>
</type>
</variable>
</localVars>
<externalVars>
<variable name="ResetCounterValue">
<type>
<INT/>
</type>
</variable>
</externalVars>
</interface>
<body>
<ST>
<xhtml:p><![CDATA[IF Reset THEN
Cnt := ResetCounterValue;
ELSE
Cnt := Cnt + 1;
END_IF;
Out := Cnt;]]></xhtml:p>
</ST>
</body>
</pou>
</pous>
</types>
<instances>
<configurations>
<configuration name="config">
<resource name="resource1">
<task name="task0" priority="0" interval="T#20ms">
<pouInstance name="instance0" typeName="plc_prg"/>
</task>
</resource>
<globalVars>
<variable name="ResetCounterValue">
<type>
<INT/>
</type>
<initialValue>
<simpleValue value="1000"/>
</initialValue>
</variable>
</globalVars>
</configuration>
</configurations>
</instances>
</project>
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