comm.cpp

270开发板串口扩展测试程序,arm9 工控板测试

#include "stdafx.h"
#include "CommApp.h"
#include "CommAppDlg.h"
#include "Comm.h"

#include <windows.h>
#include <winbase.h>
#include <winnls.h>

extern HANDLE hSer;
extern HANDLE g_hevWriteEnable;
//int nLineCount = 0;

extern CEdit *pm_Edit;
extern CEdit *pm_Send;
extern CEdit *pm_Status;

//////////////////////////////////////////////////////////////////////////////////
void CommInit(CString IndexText, unsigned long Baudrate)
{
		DCB dcb;

		hSer = CreateFile( IndexText, 
						   GENERIC_READ | GENERIC_WRITE, 
						   0,
						   NULL,
						   OPEN_EXISTING, 
						   0, 
						   NULL );

		if( hSer == INVALID_HANDLE_VALUE ) 
		{
			pm_Status->SetWindowText(TEXT("Open ")+IndexText+TEXT(" Failed!"));
			return;
		}

		pm_Status->SetWindowText(TEXT("Open ")+IndexText+TEXT(" Success!"));

		//set the DCB structure
		dcb.DCBlength = sizeof( DCB );
		GetCommState( hSer, &dcb );
		dcb.fParity = FALSE;
		dcb.fNull = FALSE;
		dcb.StopBits = ONESTOPBIT;
		dcb.Parity = NOPARITY;
		dcb.BaudRate = Baudrate;
		dcb.ByteSize = 8;
		// BOOL bSetCommStat = 
		SetCommState( hSer, &dcb );

		//Set the timeout
		COMMTIMEOUTS CommTimeOuts;
		CommTimeOuts.ReadIntervalTimeout = 0xFFFFFFFF;
		CommTimeOuts.ReadTotalTimeoutMultiplier = 10;
		CommTimeOuts.ReadTotalTimeoutConstant = 10;
		CommTimeOuts.WriteTotalTimeoutMultiplier = 50;
		CommTimeOuts.WriteTotalTimeoutConstant = 100;
		SetCommTimeouts( hSer, &CommTimeOuts );
		return;
}


//Rcv Thread,Read the ComBuffer
void CommRcv(void)
{
	BYTE ReadBuffer[2000] = {0};
	TCHAR TReadBuffer[2000] = {0};
	// BOOL bReadStatus = FALSE;
	DWORD dwErrorFlags;
	COMSTAT ComStat;
	DWORD i;
	DWORD dwBytesRead = 0;
	SetCommMask(hSer, EV_RXCHAR);
	
	while(1)
	{			
		WaitCommEvent(hSer, NULL, NULL);
		SetCommMask(hSer, EV_RXCHAR);
		ClearCommError( hSer, &dwErrorFlags, &ComStat );
		if( !ComStat.cbInQue )	continue;
		
		// dwBytesToRead = ComStat.cbInQue;		
		if( !ReadFile( hSer, ReadBuffer, ComStat.cbInQue, &dwBytesRead, NULL) )
		{	
			pm_Status -> SetWindowText(TEXT("Read COMM Failed!"));
			return;
		}
		else 
		{		
			pm_Status -> SetWindowText(TEXT("Read COM Success!"));
			
			MultiByteToWideChar(CP_ACP, 
								0, 
								(char *)ReadBuffer, 
								dwBytesRead, 
								TReadBuffer, 
								dwBytesRead);

			if(TReadBuffer[0])
				lstrcat(TReadBuffer, TEXT("\r\n"));
			
			// nLineCount = ;
			if( (pm_Edit->GetLineCount()) > 40)
			{				
				// Clear the Output
				pm_Edit -> SetSel(0,-1);
				pm_Edit -> Clear();
			}

			// Now output		
			int nLen = pm_Edit->GetWindowTextLength(); 
			pm_Edit -> SetFocus(); 
			pm_Edit -> SetSel(nLen, nLen); 
			pm_Edit -> ReplaceSel(TReadBuffer); 

			// Clear the Buffer
			for(i = 0; i < dwBytesRead + 2; i++)
			{
				ReadBuffer[i] = 0;
				TReadBuffer[i] = 0;
			}
		}	
	}
}


//Trans Thread
void CommTrans(void)
{
	DWORD dwBytesWrite;
	char WriteBuffer[100] = {0};
	TCHAR TWriteBuffer[100] = {0};
	
	while(1)
	{
		if(WaitForSingleObject(g_hevWriteEnable, INFINITE) == WAIT_OBJECT_0)
		{
			// Write to Comm
			pm_Send -> GetWindowText(TWriteBuffer, 100);
			lstrcat(TWriteBuffer, TEXT("\r\n"));
			WideCharToMultiByte(CP_ACP,
								WC_COMPOSITECHECK|WC_DEFAULTCHAR,
								TWriteBuffer,
								lstrlen(TWriteBuffer),
								WriteBuffer,
								lstrlen(TWriteBuffer),
								NULL,
								NULL);
			
			if(WriteFile(hSer, (char *)WriteBuffer, lstrlen(TWriteBuffer)*sizeof(char), &dwBytesWrite, NULL))
			{
				pm_Status -> SetWindowText(TEXT("Write COM Success!"));
			}
			else 
			{
				DWORD i = GetLastError();
				pm_Status -> SetWindowText(TEXT("Write COM Failed!"));
			}
		}
		else 
			break;
	}
	return;
}