836demo6.c

研华工控卡PCL836的一些例程序

/*****************************************************************************
 *                                                                           *
 *          836DEMO6.C - Example of  PCL-836  counter  card                  *
 *                       Pulse generate (FOUT function)  demo program           *
 *                                            Advantech Co,.Ltd.  2/24/97    *
 *****************************************************************************
*/
#include <dos.h>
#include <stdio.h>
#include <bios.h>
#include <conio.h>
#include <stdlib.h>
#include "..\driver.h"

void ShowErrorMessage(unsigned long ErrorCode);
void dis_main(void);

/*=============================================================*/
/*   Main program                                              */
/*=============================================================*/
main(void)
{
     unsigned short usBaseAddress, usDeviceNumber;
     unsigned short usCounter;
     unsigned long  retCode;
     unsigned int   keyin;

     // default base address & device number
     usBaseAddress = 0x240;
     usDeviceNumber = 0x00;

     // display demo program description
     clrscr();
     dis_main();

     // Open device driver
     retCode = DeviceOpen(usDeviceNumber, usBaseAddress);
     if (retCode != 0L)
     {
        ShowErrorMessage(retCode);
        return;
     }

     // initilize counter function
     FreqOutStart(usDeviceNumber, 0, (float)200.0);
     FreqOutStart(usDeviceNumber, 1, (float)1000.0);
     FreqOutStart(usDeviceNumber, 2, (float)10000.0);
     FreqOutStart(usDeviceNumber, 3, (float)100000.0);
     FreqOutStart(usDeviceNumber, 4, (float)1000000.0);
     FreqOutStart(usDeviceNumber, 5, (float)5000000.0);

     while(1)
     {
       do
       {
           gotoxy(10,17);
           printf("FOUT function is in progressing ......");

       } while(!bioskey(1));

       keyin = bioskey(0);
       if((keyin &= 0x0ff) == 27)
          break;

       gotoxy(15,20);
       printf("  Press ESC to ABORT, other key to CONTINUE !");
       if((bioskey(0) & 0x0ff) == 27)
          break;
     }

     for (usCounter = 0 ; usCounter < 6 ; usCounter++)
        FreqOutReset(usDeviceNumber, usCounter);
     DeviceClose(usDeviceNumber);
     return;
}

/*=============================================================*/
/*  display description                                        */
/*=============================================================*/
void dis_main(void)
{
     gotoxy(25,3);
     printf("******  PCL836DEMO 6  ***** ");
     gotoxy(10,5);
     printf("The demo program uses square wave generator");
     gotoxy(10,6);
     printf("This Base Address is set to 0x240 and connect FOUT0 - FOUT5.");

     gotoxy(10,8);
     printf(" Please check wave generator:");
     gotoxy(10,9);
     printf(" <0> FOUT0 ----  200  HZ ");
     gotoxy(10,10);
     printf(" <1> FOUT1 ----  1K   HZ");
     gotoxy(10,11);
     printf(" <2> FOUT2 ----  10K  HZ");
     gotoxy(10,12);
     printf(" <3> FOUT3 ----  100K HZ");
     gotoxy(10,13);
     printf(" <4> FOUT4 ----  1M   HZ");
     gotoxy(10,14);
     printf(" <5> FOUT5 ----  5M   HZ");
}

/*=============================================================*/
/*     show error message                                      */
/*=============================================================*/
void ShowErrorMessage(unsigned long ErrorCode)
{
   char szErrorMsg[10][80]=
   {
   {"DeviceNumber is out of range ,its range is from 0 to 9."},
   {"Invalid Base Address."},
   {"This DeviceNumber is in use !"},
   {"Invalid Base Address, DeviceOpen must be called before any other functions."},
   {"Illegal Channel"},
   {"Illegal Input Param"},
   {"The freqence of calling the function is too high."},
   {"FOUT frequency is out of range "},
   {"Invalid Port Channel"}
   };

   gotoxy(10,24);
   if ((ErrorCode > (unsigned long)MaxErrorCode) || (ErrorCode == 0L))
    printf("No Error");
   else
    printf("%s\n",&szErrorMsg[ErrorCode-1][0]);
}