www.pudn.com > wsc4c30.zip > CONSOLE.C

/* console.c 
** 
** Windows 95/NT console application. 
** Simple terminal emulator. 
*/ 
 
#include  
#include  
#include  
 
#include "wsc.h" 
 
char Temp[80]; 
int Port; 
int Baud; 
 
/* return TRUE if user typed key */ 
 
int KeyPress(HANDLE Handle) 
{DWORD NbrRead; 
 INPUT_RECORD InputEvent; 
 PeekConsoleInput(Handle,&InputEvent,1,&NbrRead); 
 if(NbrRead==0) return FALSE; 
 if( (InputEvent.EventType!=KEY_EVENT) || 
     (InputEvent.Event.KeyEvent.bKeyDown==FALSE) || 
     (InputEvent.Event.KeyEvent.uChar.AsciiChar==0) ) 
   {/* trash this event */ 
    ReadConsoleInput(Handle, &InputEvent, 1, &NbrRead); 
    return FALSE; 
   } 
 /* character ready to read */ 
 return TRUE; 
} 
 
/* get input character */ 
 
char GetChar(HANDLE Handle) 
{char TheChar; 
 DWORD  BytesRead; 
 ReadFile(Handle, &TheChar, 1, &BytesRead, 0); 
 return TheChar; 
} 
 
/* write character to console */ 
 
void PutChar(HANDLE Handle, char TheChar) 
{DWORD BytesWritten; 
 WriteFile(Handle, &TheChar, 1, &BytesWritten, 0); 
} 
 
/* write string to console */ 
 
void PutString(HANDLE Handle, char *TheString) 
{DWORD BytesWritten; 
 WriteFile(Handle, TheString, strlen(TheString), &BytesWritten, 0); 
} 
 
/* trap WSC error codes */ 
 
int ErrorCheck(int Code) 
{if(Code<0) 
   {SioWinError((LPSTR)Temp,80); 
    printf("ERROR %d: %s\n",Code,(LPSTR)Temp); 
    SioDone(Port); 
    exit(1); 
   } 
 return Code; 
} 
 
/* display error & exit */ 
 
void SayError(char *Msg) 
{printf("ERROR: %s: %d\n", Msg, GetLastError() ); 
 exit(1); 
} 
 
/*** main ***/ 
 
void main(int argc, char *argv[]) 
{char c; 
 int  i; 
 HANDLE ConIn; 
 HANDLE ConOut; 
 DWORD OldMode; 
 DWORD NewMode; 
 BOOL  Success; 
 /* process args */ 
 if(argc!=3) 
   {printf("Usage: CONSOLE  \n"); 
    return; 
   } 
 Port = atoi(argv[1]) - 1; 
 Baud = atoi(argv[2]); 
 
 /* get handles for stdin & stdout */ 
 ConIn  = GetStdHandle(STD_INPUT_HANDLE); 
 ConOut = GetStdHandle(STD_OUTPUT_HANDLE); 
 if(ConIn==ConOut) SayError("Console Handles"); 
 /* modify console mode: disable line input & line echo */ 
 Success = GetConsoleMode(ConIn, &OldMode); 
 if(!Success) SayError("GetConsoleMode"); 
 NewMode = OldMode & ~ENABLE_LINE_INPUT & ~ENABLE_ECHO_INPUT; 
 Success = SetConsoleMode(ConIn, NewMode); 
 if(!Success) SayError("SetConsoleMode"); 
 /* set defaults for all ports. Note 'Port' argument is -1 */ 
 ErrorCheck( SioReset(-1,1,1)); // DTR & RTS set at port initialization 
 ErrorCheck( SioParms(-1,WSC_NoParity,WSC_OneStopBit,WSC_WordLength8)); 
 /* reset (initialize) the port */ 
 ErrorCheck( SioReset(Port,1024,1024) ); 
 ErrorCheck( SioBaud(Port,Baud) ); 
 /* DTR and RTS already set by SioReset(-1,1,1) */ 
   ///ErrorCheck( SioDTR(Port,'S') ); 
   ///ErrorCheck( SioRTS(Port,'S') ); 
 PutString(ConOut,"\nEnter terminal loop ( Type ^Z to exit )\n"); 
 /* enter terminal loop */ 
 while(TRUE) 
   {/* was key pressed ? */ 
    if(KeyPress(ConIn)) 
      {/* fetch character */ 
       c = GetChar(ConIn); 
       if(c==0x1a) 
         {/* restore COM port status & exit */ 
          SioDone(Port); 
          SetConsoleMode(ConIn, OldMode); 
          exit(1); 
         } 
       else 
         {/* transmit character */ 
          SioPutc(Port,c); 
         } 
      } /* end if */ 
    /* any incoming over serial port ? */ 
    i = SioGetc(Port); 
    if(i>=0) PutChar(ConOut,(char)i); 
   } /* end-while(TRUE) */ 
} /* end main */