nim_duilib/examples/proto_debuger/serial_port.cpp

#include<tchar.h>
#include<iostream>
//#include<map>
#include <windows.h>
//using namespace  std;
#include"serial_port.h"

map<int, HANDLE>  SerialPort::ComMap;

//<2F><><EFBFBD>캯<EFBFBD><ECBAAF>
SerialPort::SerialPort() {

} 

//<2F><><EFBFBD>캯<EFBFBD><ECBAAF>
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

SerialPort::~SerialPort() {

}

//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD>б<EFBFBD>
UINT SerialPort::GetPortNum(UINT** PortList) {
	LPCTSTR Reg_Path = _T("HARDWARE\\DEVICEMAP\\SERIALCOMM");  //<2F><><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD>·<EFBFBD><C2B7>
	//TCHAR pnum[8];
	HKEY H_Key;
	static UINT portlist[255];									//һ<><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>255<35><35><EFBFBD><EFBFBD><EFBFBD>鹻<EFBFBD><E9B9BB><EFBFBD>ˡ<EFBFBD>
	long Status;
	UINT PortNum;
	DWORD count = 0;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	DWORD Com_Length, Type_Length, Type;
	TCHAR Com_Name[256];//<2F>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	TCHAR Type_Name[256];//<2F>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>	
	Status = RegOpenKeyEx(HKEY_LOCAL_MACHINE, Reg_Path, 0, KEY_READ, &H_Key); //<2F><><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>long
	memset(portlist, 0, sizeof(portlist)); // <20><>0

	if (Status) //<2F><><EFBFBD><EFBFBD>ֵΪ0<CEAA><30>ʾ<EFBFBD>򿪳ɹ<F2BFAAB3><C9B9><EFBFBD><EFBFBD><EFBFBD>Ϊ0<CEAA><30><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>ʧ<EFBFBD><CAA7>
	{
		return 0;
	}

	while (true) {
		Com_Length = 256;						//<2F>洢<EFBFBD><E6B4A2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȣ<EFBFBD>ÿ<EFBFBD>ζ<EFBFBD>Ҫ<EFBFBD><D2AA>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>Ȼ<EFBFBD>´ο<C2B4><CEBF>ܻ<EFBFBD>ʧ<EFBFBD><CAA7>,Com_lengthֵ<68><D6B5><EFBFBD><EFBFBD>
		Type_Length = 256;
		PortNum = 0;
		Status = RegEnumValue(H_Key, count++, Type_Name, &Type_Length
			, 0, &Type, PUCHAR(Com_Name), &Com_Length);
		if (Status) {	//<2F><>ѯʧ<D1AF><CAA7>˵<EFBFBD><CBB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѭ<EFBFBD><D1AD><EFBFBD><EFBFBD> 
			break;
		}

		for (int i = 3; Com_Name[i]; i++) { //ת<><D7AA>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>
			PortNum = PortNum * 10 + (Com_Name[i] - '0');
		}
		portlist[count - 1] = PortNum;
	}

	*PortList = portlist;      //<2F>ض<EFBFBD><D8B6><EFBFBD>ָ<EFBFBD><D6B8>
	return (count - 1);
}

//_stprintf_s(DcbPara, _T("baud=%d parity=%c data=%d stop=%d"), 9600, 'N', 8, 1);
//<2F>򿪶˿<F2BFAAB6>
HANDLE SerialPort::OpenPort(UINT PortNo)   //<2F>򿪶˿<F2BFAAB6>
{
	HANDLE H_Com;		//<2F><><EFBFBD>ھ<EFBFBD><DABE><EFBFBD>
	//PortNum = PortNo;	//<2F><><EFBFBD>ں<EFBFBD>

	TCHAR PortName[20];
	//<2F><><EFBFBD><EFBFBD><EFBFBD>ںŴ<DABA>ӡ<EFBFBD><D3A1><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>÷<EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD>10<31><30><EFBFBD>ϴ<EFBFBD><CFB4><EFBFBD>
	_stprintf_s(PortName, _T("\\\\.\\COM%d"), PortNo);

	H_Com = CreateFile(PortName,
		GENERIC_READ | GENERIC_WRITE,//<2F><>д
		0,
		NULL,
		OPEN_EXISTING,  //<2F>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD>ڵ<EFBFBD>
		0,
		0); //<2F>򿪴<EFBFBD><F2BFAAB4>ڣ<EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD>ʽ
	if (H_Com == INVALID_HANDLE_VALUE) {//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>ʧ<EFBFBD><CAA7>
		return INVALID_HANDLE_VALUE;
	}
	SetupComm(H_Com, 1024, 1024); //<2F><><EFBFBD>ö<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ1024;
	ComMap[PortNo] = H_Com;		// <20>򿪳ɹ<F2BFAAB3><C9B9>򣬴<EFBFBD><F2A3ACB4><EFBFBD>map
	return H_Com;
}

//<2F>رն˿<D5B6>
void SerialPort::ClosePort(UINT PortNo)	//<2F>رմ<D8B1><D5B4><EFBFBD>
{
	if (PortState(PortNo)) //<2F><><EFBFBD><EFBFBD><EFBFBD>Ǵ򿪵<C7B4>
	{
		HANDLE H_Com = ComMap[PortNo];  //<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
		CloseHandle(H_Com);
		ComMap.erase(PortNo);			//<2F><>map<61><70><EFBFBD><EFBFBD><EFBFBD><EFBFBD>

	}

}

//<2F>ر<EFBFBD><D8B1><EFBFBD><EFBFBD>ж˿<D0B6>
void SerialPort::ClearAllPort() {	//<2F>رմ<D8B1><D5B4><EFBFBD>
	for (map<int, HANDLE>::iterator iter = ComMap.begin(); iter != ComMap.end(); )
	{
		CloseHandle(iter->second);					//<2F>رմ<D8B1><D5B4><EFBFBD>
		iter = ComMap.erase(iter);					//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧЧ<CAA7><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>쳣<EFBFBD><ECB3A3>
	}
}

//<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int SerialPort::InitPort(UINT PortNo, UINT Baud, byte Parity, byte Data, byte Stop) {
	if (PortState(PortNo))   //<2F><><EFBFBD><EFBFBD><EFBFBD>˿<EFBFBD><CBBF>Ѿ<EFBFBD><D1BE><EFBFBD><EFBFBD><EFBFBD>
	{
		ClosePort(PortNo);  //<2F>ص<EFBFBD><D8B5>˿<EFBFBD>
	}
	if (Parity < 0 || Parity >4)  //parity 0~4
		return 0;

	if (Stop < 0 || Stop >2) //stop 0~2
		return 0;

	HANDLE H_Com;  //<2F><><EFBFBD>ھ<EFBFBD><DABE><EFBFBD>
	//TCHAR DcbPara[50];			//<2F><><EFBFBD><EFBFBD>Dcb<63>ṹ
	//_stprintf_s(DcbPara, _T("baud=%d parity=%c data=%d stop=%d") , Baud, Parity, Data, Stop);
	H_Com = OpenPort(PortNo);

	if (H_Com == INVALID_HANDLE_VALUE) 	{
		return 0;
	}


	//int count = 0;
	COMMTIMEOUTS ComTimeouts = { 0, 0, 10, 0, 10 };

	DCB S_dcb;
	if (!SetCommTimeouts(H_Com, &ComTimeouts)) {//<2F><><EFBFBD>ó<EFBFBD>ʱ
		return 0;
	}
	if (!GetCommState(H_Com, &S_dcb)) {	//<2F><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>DCB<43>ṹ
		return 0;
	}
	S_dcb.BaudRate = Baud;
	S_dcb.ByteSize = Data;
	S_dcb.Parity = Parity;
	S_dcb.StopBits = Stop;
	//if(!BuildCommDCB(DcbPara , &S_dcb))//<2F><><EFBFBD><EFBFBD>DCB
	//{

	//	return 0;
	//}

	S_dcb.fRtsControl = RTS_CONTROL_DISABLE; //<2F><><EFBFBD><EFBFBD>Rts<74>ź<EFBFBD>
	if (!SetCommState(H_Com, &S_dcb)) {	//<2F><><EFBFBD><EFBFBD>DCB
		int i = GetLastError();
		return 0;
	}

	PurgeComm(H_Com, PURGE_RXCLEAR | PURGE_TXCLEAR |
		PURGE_RXABORT | PURGE_TXABORT); //<2F><><EFBFBD>ջ<EFBFBD><D5BB><EFBFBD><EFBFBD><EFBFBD>
	return 1;
}

int SerialPort::PortState(UINT PortNo)
{
	map<int, HANDLE>::iterator iter;
	iter = ComMap.find(PortNo);
	if (iter != ComMap.end())  //˵<><CBB5><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><D2B5>˶˿<CBB6>
		return 1;
	else
		return 0;
}
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int SerialPort::ReadPort(UINT PortNo, char* P_recved, int length) //<2F><><EFBFBD>غ<EFBFBD><D8BA><EFBFBD> һ<>ζ<EFBFBD>ȡָ<C8A1><D6B8><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD><EFBFBD><EFBFBD>
{
	if (PortState(PortNo) == 0) //<2F><><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
		return 0;
	HANDLE H_Com = ComMap[PortNo];
	DWORD Recn;  //ʵ<>ʶ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
	BOOL Result = TRUE;


	Result = ReadFile(H_Com, P_recved, length, &Recn, NULL);
	if (Result == 0)
	{
		//GetLastError();
		PurgeComm(H_Com, PURGE_RXCLEAR | PURGE_RXABORT);

		return 0;
	}

	return Recn;
}
//<2F><><EFBFBD>ջ<EFBFBD><D5BB><EFBFBD><EFBFBD><EFBFBD>
void SerialPort::ClearCom(UINT PortNo)
{
	if (PortState(PortNo) == 0) //<2F><><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
		return;
	HANDLE H_Com = ComMap[PortNo];
	PurgeComm(H_Com, PURGE_RXCLEAR | PURGE_RXABORT);
}
int SerialPort::CheckRTS(UINT PortNo)
{
	return 0;
}
//д<><D0B4><EFBFBD><EFBFBD>
int SerialPort::WritePort(UINT PortNo, const char* pData, int length)
{
	if (PortState(PortNo) == 0) //<2F><><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
		return 0;
	HANDLE H_Com = ComMap[PortNo];
	if (length == 0)
		length = strlen(pData);
	DWORD Recn;
	BOOL Result = TRUE;
	if (H_Com == INVALID_HANDLE_VALUE)
		return -1;
	Result = WriteFile(H_Com, pData, length, &Recn, NULL);
	if (Result == 0)
	{
		GetLastError();
		PurgeComm(H_Com, PURGE_RXCLEAR | PURGE_RXABORT);
		return 0;
	}
	return Recn;
}



//<2F><>ȡҪ<C8A1><D2AA>ȡ<EFBFBD><C8A1><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD>
UINT SerialPort::GetByte(UINT PortNo) //<2F>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽڳ<D6BD><DAB3>ȡ<EFBFBD>
{
	if (PortState(PortNo) == 0) //<2F><><EFBFBD><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>
		return 0;
	HANDLE H_Com = ComMap[PortNo];
	DWORD dwError;
	COMSTAT comstat;
	DWORD BytesInQue = 0;
	DWORD FirstSize = 0;

	memset(&comstat, 0, sizeof(COMSTAT)); //<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	while (true)
	{

		BytesInQue = FirstSize;
		Sleep(10);
		if (ClearCommError(H_Com, &dwError, &comstat))
			FirstSize = comstat.cbInQue; //<2F><><EFBFBD>¸<EFBFBD>ֵ

		if (BytesInQue == FirstSize)
			break;
	}

	return BytesInQue;
}