digital.c

rt采集卡dos下dm6430驱动源代码

/***************************************************************************

	FILE NAME: DIGITAL.C

	FILE DESCRIPTION: DIGITAL (Digital I/O)

    Sample program that demonstrates how to program digital I/O

	Sample program that demonstrates how to read and write the digital I/O.
    The program constantly displays the value of the lines on the input port
    in the center of the screen.  You can enter a value to be sent to the
	output port. Wiring the input port lines to the corresponding output
    port lines will allow you to change the output lines and view the changes
    at the same time.

	PROJECT NAME: DIGITAL (Part of DM6430 DOS Driver)

	DRIVER VERSION: 1.1

	COMPILER: Borland C++ 3.1

	TARGET: Real-Mode DOS

	Copyright 2003 RTD Embedded Technologies

***************************************************************************/

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

#include "drvr6430.h"
#include "dio5812.h"



/***************************************************************************
  Defines

  Change these constants to alter the program parameters.
****************************************************************************/

#define BASE_ADDRESS 768               // Base address of DM6430.

/***************************************************************************
  SetProgramScreen()

  The SetProgramScreen function initializes the screen.
****************************************************************************/

void SetProgramScreen(void)
{
  clrscr();

  // Print header and footer.
  gotoxy(1,1);   cprintf(TitleString6430());
  gotoxy(50, 1); cprintf("Digital I/O");
  gotoxy(1, 25); cprintf("Press <Esc> to exit. . .");

  // Define data window and print labels for the samples.
  window(1, 3, 80, 23);
  gotoxy(32, 8); cprintf("IN: ");
  gotoxy(1, 21); cprintf("Enter value to output (<Esc> to exit): ");
} //SetProgramScreen


int main(void)
{
  char C;                              // Variable for editing output data.
  unsigned int DOData;                 // Data to Digital output.
  int ExitProgram;                     // Exit condition variable.

  SetProgramScreen();

  SetBaseAddress(BASE_ADDRESS);
  InitBoard6430();                     // Board initializing.
  SetPort0Direction5812(0, 0);         // Initializing port 0 for input.
  SetPort1Direction5812(0, 1);         // Initializing port 1 for output.

  ExitProgram = 0;
  while (!ExitProgram) {               // Run untill <Esc> is pressed.
	 gotoxy(35, 8); cprintf( "%6d", ReadDIO5812(0, 0) );
													// Read the digital input lines.

	 if (kbhit()) {                     // If key pressed get value to output.
		C = getch();
		if (C == 27)                     // If <Esc> then quit.
		  ExitProgram = 1;
		else if ((C >= 0x30)
				 & (C <= 0x39))            // C is a digit.
		{
		  gotoxy(42, 21);                // Edit digital output data.
		  putch(C);
		  ungetch(C);
		  cscanf("%d", &DOData);
		  gotoxy(42, 21); clreol();
		  WriteDIO5812( 0, 1, DOData );  // Write data to digital output.
		} //if
	 } //if
  } //while

  window(1,1,80,25);                   // Reset original screen coordinates,
  clrscr();                            // and clear the screen.
  return 0;
} //main