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| /---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include <inifiles.hpp>
#include "Umain.h"
#include "UPort.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TPMain *PMain;
extern TCommTimeouts lpCommTimeouts;
extern HANDLE port;
extern TDCB lpDCB;
extern TOverlapped Overlapp ;
extern AnsiString buf;
extern char buf1[255];
extern AnsiString COM_name;
extern int COM_BaudRate;
extern int COM_ByteSize;
extern int COM_Parity;
extern int COM_StopBits;
extern int COM_RITimeout;
extern int COM_RTTConstant;
extern int COM_RTTMultiplier;
extern int COM_WTTMultiplier;
extern int COM_WTTConstant;
//---------------------------------------------------------------------------
__fastcall TPMain::TPMain(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TPMain::Open_COM_portClick(TObject *Sender)
{
if (port != 0)
{
CloseHandle(port);
port = 0;
}
Overlapp.hEvent = 0;
Overlapp.Internal = 0;
Overlapp.InternalHigh = 0;
Overlapp.Offset = 0;
Overlapp.OffsetHigh = 0;
TIniFile* ini;
ini = new TIniFile(ExtractFilePath(Application->ExeName)+"config.ini");
COM_name = ini -> ReadString("XK3118T1","COM","COM1");
COM_BaudRate = ini -> ReadInteger("XK3118T1","BaudRate",9600);
COM_ByteSize = ini -> ReadInteger("XK3118T1","ByteSize",8);
COM_Parity = ini -> ReadInteger("XK3118T1","Parity",0);
COM_StopBits = ini -> ReadInteger("XK3118T1","StopBits",0);
COM_RITimeout = ini -> ReadInteger("XK3118T1","ReadIntervalTimeout",10);
COM_RTTConstant = ini -> ReadInteger("XK3118T1","ReadTotalTimeoutConstant",0);
COM_RTTMultiplier = ini -> ReadInteger("XK3118T1","ReadTotalTimeoutMultiplier",0);
COM_WTTMultiplier = ini -> ReadInteger("XK3118T1","WriteTotalTimeoutMultiplier",0);
COM_WTTConstant = ini -> ReadInteger("XK3118T1","WriteTotalTimeoutConstant",500);
delete ini;
if (port == 0)
port = CreateFile(COM_name.c_str(),
GENERIC_READ | GENERIC_WRITE, 0,
NULL, OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, 0);
// ÷òåíèå â lpDCB ïàðàìåòðîâ ïîðòà
if(! GetCommState(port, &lpDCB))
{
AnsiString S = "Íå óäàëîñü îòêðûòü ïîðò " + COM_name;
ShowMessage(S.c_str());
exit;
}
// íàñòðîéêà ïàðàìåòðîâ â çàïèñè lpDC
lpDCB.BaudRate = COM_BaudRate;
lpDCB.ByteSize = COM_ByteSize;
lpDCB.Parity = COM_Parity;
lpDCB.StopBits = COM_StopBits;
lpDCB.fBinary = TRUE; //âêëþ÷àåì äâîè÷íûé ðåæèì îáìåíà
lpDCB.fOutxCtsFlow = FALSE; //âûêëþ÷àåì ðåæèì ñëåæåíèÿ çà ñèãíàëîìCTS
lpDCB.fOutxDsrFlow = FALSE; //âûêëþ÷àåì ðåæèì ñëåæåíèÿ çà ñèãíàëîìDSR
lpDCB.fDtrControl = DTR_CONTROL_DISABLE; //îòêëþ÷àåì èñïîëüçîâàíèå ëèíèèDTR
lpDCB.fDsrSensitivity = FALSE; //îòêëþ÷àåì âîñïðèèì÷èâîñòü äðàéâåðà ê ñîñòîÿíèþ ëèíèèDSR
lpDCB.fNull = FALSE; //ðàçðåøèòü ïðè¸ì íóëåâûõ áàéòîâ
lpDCB.fRtsControl = RTS_CONTROL_DISABLE; //îòêëþ÷àåì èñïîëüçîâàíèå ëèíèèRTS
lpDCB.fAbortOnError = FALSE; //îòêëþ÷àåì îñòàíîâêó âñåõ îïåðàöèé
// çàïèñü ïàðàìåòðîâ â ïîðò
if(!SetCommState(port, &lpDCB))
{
ShowMessage("Çíà÷åíèÿ ïàðàìåòðîâ íåäîïóñòèìûå\n"
"Óñòàíîâêà íå ïðîèçâåäåíà");
}
try
{
lpCommTimeouts.ReadIntervalTimeout = COM_RITimeout;
lpCommTimeouts.ReadTotalTimeoutMultiplier = COM_RTTConstant;
lpCommTimeouts.ReadTotalTimeoutConstant = COM_RTTMultiplier;
lpCommTimeouts.WriteTotalTimeoutMultiplier = COM_WTTMultiplier;
lpCommTimeouts.WriteTotalTimeoutConstant = COM_WTTConstant;
}
catch(EConvertError&)
{
ShowMessage("Îøèáî÷íîå çíà÷åíèå âðåìåííîãî èíòåðâàëà.\n Óñòàíîâêà íå ïðîèçâåäåíà");
exit;
}
if (!SetCommTimeouts(port, &lpCommTimeouts))
{
ShowMessage("Çíà÷åíèÿ âðåìåííûõ ïàðàìåòðîâ íåäîïóñòèìûå\n Óñòàíîâêà íå ïðîèçâåäåíà");
exit;
}
Label1->Caption = "Ïîðò îòêðûò";
//óñòàíîâèòü ðàçìåðû î÷åðåäåé ïðè¸ìà è ïåðåäà÷è
}
//---------------------------------------------------------------------------
void __fastcall TPMain::Read_COMClick(TObject *Sender)
{
// ïðîöåäóðà ÷òåíèÿ
Memo1->Lines->Add(buf1);
int n;
strcpy(buf1, "");
FlushFileBuffers(port);
// Overlapp.hEvent = CreateEvent(NULL, false, false, NULL);
ReadFile(port, buf1, 100, &DWORD(n), &Overlapp);
if (GetLastError() != ERROR_IO_PENDING)
ShowMessage("Îøèáêà ÷òåíèÿ äàííûõ");
else
Timer1->Enabled = true;
}
//---------------------------------------------------------------------------
void __fastcall TPMain::Timer1Timer(TObject *Sender)
{
int n;
if (GetOverlappedResult(port, &Overlapp, &DWORD(n), false))
{
Label1->Caption = "Ïîëó÷åíû/ïåðåäàíû íîâûå äàííûå - " + IntToStr(n) + " áàéò";
Timer1->Enabled = false;
}
else Label1->Caption = "Íîâûõ äàííûõ íåò";
}
//--------------------------------------------------------------------------- |
(
