softtrig.c

源代码PC104用户手册PC104用户手册PC104用户手册

/*
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   Tel:   [phone]
   Fax:   [phone]
   Zip:   518031

   Board:       SF93A-0102
   Compiler:    Turbo C (r) version 1.0, 1.5, 2.0
		Turbo C++ (r) version 1.0
		Borland C++ (r) version 2.0, 3.0

   Last update: Dec 24, 1994

  DESCRIPTION
  ~~~~~~~~~~~
  This program sets up the user PIT to generate interrupts at a selected
  rate.  An interrupt service routine (ISR) is provided that simply
  samples from one channel on the ADT600 each time the interrupt is
  activated.  The value is displayed on the screen as a foreground
  process.  Although the ISR in this program is trivial, all the
  ingredients for powerful interrupt driven data are included.

  NOTES
  ~~~~~
  You must change the first two lines in the main function to reflect the
  base address and IRQ settings for your ADT600.

*/
#include <dos.h>
#include <conio.h>

#include "ADT600.h"
#include "ADT600.inc"

/**********

  ProgramTitle

  The ProgramTitle function displays a description of the program on the
  screen.

**********/

void ProgramTitle(char St[])
{
 gotoxy(1,1); clreol();
 cprintf("ADT600  Sample Program");
 gotoxy(80 - strlen(St), 1);
 cprintf(St);
}

void main(void)
{
 InitializeBoardSettings(768, 10.0, BIPOLAR);

 clrscr();
 ProgramTitle("Single conversions, software trigger.");
 gotoxy(1, 25);
 cprintf("Press any key to exit. . .");
 gotoxy(28, 12);
 cprintf("Volts: ");

 ResetBoard();                       /* Reset the Board */

 SetChannel(0);                      /* Set channel 0 */

 while (kbhit() == 0)
  {
   StartConversion();                 /* Start a conversion */

   while (ConversionDone() == 0);    /* Wait until data is ready */

   gotoxy(35, 12);                  /* cprintf the data in volts */
   cprintf("%6.2f", DigitalToSBS(ReadData()));
   delay(100);
  }

 getch();                     /* Read character from keyboard */
 clrscr();
}