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OpenPLC/OPLC_Compiler_source/iolist.cpp
thiagoralves 0543021448 Small changes 
- Corrected buffer declaration on OPLC Compiler
  - Changed OPLC Compiler folder name
  - Corrected FC 04 on Modbus
2016-02-10 18:38:05 -06:00

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//-----------------------------------------------------------------------------
// Copyright 2015 Thiago Alves
//
// Based on the LDmicro software by Jonathan Westhues
// This file is part of OPLC Compiler.
//
// OPLC Compiler is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// OPLC Compiler 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
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with OPLC Compiler. If not, see <http://www.gnu.org/licenses/>.
//------
//
// Routines to maintain the processor I/O list, to build them from file and
// append them on the PlcProgram data structure.
// Thiago Alves, Oct 2015
//-----------------------------------------------------------------------------
using namespace std;
#include <stdlib.h>
#include <string.h>
#include "oplc_compiler.h"
// I/O that we have seen recently, so that we don't forget pin assignments
// when we re-extract the list
#define MAX_IO_SEEN_PREVIOUSLY 512
static struct {
char name[MAX_NAME_LEN];
int type;
int pin;
} IoSeenPreviously[MAX_IO_SEEN_PREVIOUSLY];
static int IoSeenPreviouslyCount;
//-----------------------------------------------------------------------------
// Move an I/O pin into the 'seen previously' list. This means that if the
// user creates input Xasd, assigns it a pin, deletes, and then recreates it,
// then it will come back with the correct pin assigned.
//-----------------------------------------------------------------------------
static void AppendIoSeenPreviously(char *name, int type, int pin)
{
if(strcmp(name+1, "new")==0) return;
int i;
for(i = 0; i < IoSeenPreviouslyCount; i++)
{
if(strcmp(name, IoSeenPreviously[i].name)==0 && type == IoSeenPreviously[i].type)
{
if(pin != NO_PIN_ASSIGNED)
{
IoSeenPreviously[i].pin = pin;
}
return;
}
}
if(IoSeenPreviouslyCount >= MAX_IO_SEEN_PREVIOUSLY)
{
// maybe improve later; just throw away all our old information, and
// the user might have to reenter the pin if they delete and recreate
// things
IoSeenPreviouslyCount = 0;
}
i = IoSeenPreviouslyCount;
IoSeenPreviously[i].type = type;
IoSeenPreviously[i].pin = pin;
strcpy(IoSeenPreviously[i].name, name);
IoSeenPreviouslyCount++;
}
//-----------------------------------------------------------------------------
// Append an I/O to the I/O list if it is not in there already.
//-----------------------------------------------------------------------------
static void AppendIo(char *name, int type)
{
int i;
for(i = 0; i < Prog.io.count; i++)
{
if(strcmp(Prog.io.assignment[i].name, name)==0)
{
if(type != IO_TYPE_GENERAL && Prog.io.assignment[i].type == IO_TYPE_GENERAL)
{
Prog.io.assignment[i].type = type;
}
// already in there
return;
}
}
if(i < MAX_IO)
{
Prog.io.assignment[i].type = type;
Prog.io.assignment[i].pin = NO_PIN_ASSIGNED;
strcpy(Prog.io.assignment[i].name, name);
(Prog.io.count)++;
}
}
//-----------------------------------------------------------------------------
// Walk a subcircuit, calling ourselves recursively and extracting all the
// I/O names out of it.
//-----------------------------------------------------------------------------
static void ExtractNamesFromCircuit(int which, void *any)
{
ElemLeaf *l = (ElemLeaf *)any;
switch(which)
{
case ELEM_PARALLEL_SUBCKT:
{
ElemSubcktParallel *p = (ElemSubcktParallel *)any;
int i;
for(i = 0; i < p->count; i++)
{
ExtractNamesFromCircuit(p->contents[i].which, p->contents[i].d.any);
}
break;
}
case ELEM_SERIES_SUBCKT:
{
ElemSubcktSeries *s = (ElemSubcktSeries *)any;
int i;
for(i = 0; i < s->count; i++)
{
ExtractNamesFromCircuit(s->contents[i].which, s->contents[i].d.any);
}
break;
}
case ELEM_CONTACTS:
switch(l->d.contacts.name[0])
{
case 'R':
AppendIo(l->d.contacts.name, IO_TYPE_INTERNAL_RELAY);
break;
case 'Y':
AppendIo(l->d.contacts.name, IO_TYPE_DIG_OUTPUT);
break;
case 'X':
AppendIo(l->d.contacts.name, IO_TYPE_DIG_INPUT);
break;
default:
oops();
break;
}
break;
case ELEM_COIL:
AppendIo(l->d.coil.name, l->d.coil.name[0] == 'R' ? IO_TYPE_INTERNAL_RELAY : IO_TYPE_DIG_OUTPUT);
break;
case ELEM_TON:
case ELEM_TOF:
AppendIo(l->d.timer.name, which == ELEM_TON ? IO_TYPE_TON : IO_TYPE_TOF);
break;
case ELEM_RTO:
AppendIo(l->d.timer.name, IO_TYPE_RTO);
break;
case ELEM_MOVE:
AppendIo(l->d.move.dest, IO_TYPE_GENERAL);
break;
case ELEM_ADD:
case ELEM_SUB:
case ELEM_MUL:
case ELEM_DIV:
AppendIo(l->d.math.dest, IO_TYPE_GENERAL);
break;
case ELEM_FORMATTED_STRING:
if(strlen(l->d.fmtdStr.var) > 0)
{
AppendIo(l->d.fmtdStr.var, IO_TYPE_UART_TX);
}
break;
case ELEM_UART_SEND:
AppendIo(l->d.uart.name, IO_TYPE_UART_TX);
break;
case ELEM_UART_RECV:
AppendIo(l->d.uart.name, IO_TYPE_UART_RX);
break;
case ELEM_SET_PWM:
AppendIo(l->d.setPwm.name, IO_TYPE_PWM_OUTPUT);
break;
case ELEM_CTU:
case ELEM_CTD:
case ELEM_CTC:
AppendIo(l->d.counter.name, IO_TYPE_COUNTER);
break;
case ELEM_READ_ADC:
AppendIo(l->d.readAdc.name, IO_TYPE_READ_ADC);
break;
case ELEM_SHIFT_REGISTER:
{
int i;
for(i = 0; i < l->d.shiftRegister.stages; i++)
{
char str[MAX_NAME_LEN+10];
sprintf(str, "%s%d", l->d.shiftRegister.name, i);
AppendIo(str, IO_TYPE_GENERAL);
}
break;
}
case ELEM_LOOK_UP_TABLE:
AppendIo(l->d.lookUpTable.dest, IO_TYPE_GENERAL);
break;
case ELEM_PIECEWISE_LINEAR:
AppendIo(l->d.piecewiseLinear.dest, IO_TYPE_GENERAL);
break;
case ELEM_PLACEHOLDER:
case ELEM_COMMENT:
case ELEM_SHORT:
case ELEM_OPEN:
case ELEM_MASTER_RELAY:
case ELEM_ONE_SHOT_RISING:
case ELEM_ONE_SHOT_FALLING:
case ELEM_EQU:
case ELEM_NEQ:
case ELEM_GRT:
case ELEM_GEQ:
case ELEM_LES:
case ELEM_LEQ:
case ELEM_RES:
case ELEM_PERSIST:
break;
default:
oops();
}
}
//-----------------------------------------------------------------------------
// Compare function to qsort() the I/O list. Group by type, then
// alphabetically within each section.
//-----------------------------------------------------------------------------
static int CompareIo(const void *av, const void *bv)
{
PlcProgramSingleIo *a = (PlcProgramSingleIo *)av;
PlcProgramSingleIo *b = (PlcProgramSingleIo *)bv;
if(a->type != b->type)
{
return a->type - b->type;
}
if(a->pin == NO_PIN_ASSIGNED && b->pin != NO_PIN_ASSIGNED) return 1;
if(b->pin == NO_PIN_ASSIGNED && a->pin != NO_PIN_ASSIGNED) return -1;
return strcmp(a->name, b->name);
}
//-----------------------------------------------------------------------------
// Wipe the I/O list and then re-extract it from the PLC program, taking
// care not to forget the pin assignments. Gets passed the selected item
// as an index into the list; modifies the list, so returns the new selected
// item as an index into the new list.
//-----------------------------------------------------------------------------
int GenerateIoList(int prevSel)
{
int i, j;
char selName[MAX_NAME_LEN];
if(prevSel >= 0)
{
strcpy(selName, Prog.io.assignment[prevSel].name);
}
if(IoSeenPreviouslyCount > MAX_IO_SEEN_PREVIOUSLY/2)
{
// flush it so there's lots of room, and we don't run out and
// forget important things
IoSeenPreviouslyCount = 0;
}
// remember the pin assignments
for(i = 0; i < Prog.io.count; i++)
{
AppendIoSeenPreviously(Prog.io.assignment[i].name, Prog.io.assignment[i].type, Prog.io.assignment[i].pin);
}
// wipe the list
Prog.io.count = 0;
// extract the new list so that it must be up to date
for(i = 0; i < Prog.numRungs; i++)
{
ExtractNamesFromCircuit(ELEM_SERIES_SUBCKT, Prog.rungs[i]);
}
for(i = 0; i < Prog.io.count; i++)
{
if(Prog.io.assignment[i].type == IO_TYPE_DIG_INPUT ||
Prog.io.assignment[i].type == IO_TYPE_DIG_OUTPUT ||
Prog.io.assignment[i].type == IO_TYPE_READ_ADC)
{
for(j = 0; j < IoSeenPreviouslyCount; j++)
{
if(strcmp(Prog.io.assignment[i].name, IoSeenPreviously[j].name)==0)
{
Prog.io.assignment[i].pin = IoSeenPreviously[j].pin;
break;
}
}
}
}
qsort(Prog.io.assignment, Prog.io.count, sizeof(PlcProgramSingleIo), CompareIo);
if(prevSel >= 0)
{
for(i = 0; i < Prog.io.count; i++)
{
if(strcmp(Prog.io.assignment[i].name, selName)==0)
break;
}
if(i < Prog.io.count)
return i;
}
// no previous, or selected was deleted
return -1;
}
//-----------------------------------------------------------------------------
// Load the I/O list from a file. Since we are just loading pin assignments,
// put it into IoSeenPreviously so that it will get used on the next
// extraction.
//-----------------------------------------------------------------------------
BOOL LoadIoListFromFile(FILE *f)
{
char line[80];
char name[MAX_NAME_LEN];
int pin;
while(fgetsNoCR(line, sizeof(line), f))
{
if(strcmp(line, "END\n")==0)
{
return TRUE;
}
// Don't internationalize this! It's the file format, not UI.
if(sscanf(line, " %s at %d", name, &pin)==2)
{
int type;
switch(name[0])
{
case 'X': type = IO_TYPE_DIG_INPUT; break;
case 'Y': type = IO_TYPE_DIG_OUTPUT; break;
case 'A': type = IO_TYPE_READ_ADC; break;
default: oops();
}
AppendIoSeenPreviously(name, type, pin);
}
}
return FALSE;
}
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