Micro Technic PV-1648 user manual Software example, OUTBYTE0

Users Manual & Installation Guide

PV-SERIES 16 DIGITAL INPUTS, 48 DIGITAL OUTPUTS

Software example:

/* Compiler: Borland C++ 3.1 */

#include <stdio.h>

#include <dos.h> /* For inportb() and outportb() */

#define BASEADDR 0x300 /* This must match with SW1 on the PV1648 */ #define OUTBYTE0 (BASEADDR+0)

#define OUTBYTE1 (BASEADDR+1) #define OUTBYTE2 (BASEADDR+2) #define OUTBYTE3 (BASEADDR+3) #define OUTBYTE4 (BASEADDR+4) #define OUTBYTE5 (BASEADDR+5) #define INBYTE0 (BASEADDR+6) #define INBYTE1 (BASEADDR+7)

int main (void)

{

unsigned char value;

/* Show input 0-7		*/
value = inportb	(OUTBYTE0);
printf ("Input	0	= %d\n", (value>>0) &	0x01);
printf ("Input	1	= %d\n", (value>>1) &	0x01);
printf ("Input	2	= %d\n", (value>>2) &	0x01);
printf ("Input	3	= %d\n", (value>>3) &	0x01);
printf ("Input	4	= %d\n", (value>>4) &	0x01);
printf ("Input	5	= %d\n", (value>>5) &	0x01);
printf ("Input	6	= %d\n", (value>>6) &	0x01);
printf ("Input	7	= %d\n", (value>>7) &	0x01);
/* Show input 8-15 */
value = inportb	(OUTBYTE1);
printf ("Input	8	= %d\n", (value>>0) &	0x01);
printf ("Input	9	= %d\n", (value>>1) &	0x01);
printf ("Input	10	= %d\n", (value>>2) &	0x01);
printf ("Input	11	= %d\n", (value>>3) &	0x01);
printf ("Input	12	= %d\n", (value>>4) &	0x01);
printf ("Input	13	= %d\n", (value>>5) &	0x01);
printf ("Input	14	= %d\n", (value>>6) &	0x01);
printf ("Input	15	= %d\n", (value>>7) &	0x01);
/* Examples of	output operations on DO0		– DO7 */

outportb (OUTBYTE0, 0x01);	/* Make /DO0 active, all others	off */
outportb (OUTBYTE0, 0x02);	/* Make /DO1 active, all others	off */
outportb (OUTBYTE0, 0x04);	/* Make /DO2 active, all others	off */
outportb (OUTBYTE0, 0x08);	/* Make /DO3 active, all others	off */
outportb (OUTBYTE0, 0x10);	/* Make /DO4 active, all others	off */
outportb (OUTBYTE0, 0x20);	/* Make /DO5 active, all others	off */
outportb (OUTBYTE0, 0x40);	/* Make /DO6 active, all others	off */
outportb (OUTBYTE0, 0x80);	/* Make /DO7 active, all others	off */
outportb (OUTBYTE0, 0x81);	/* Make /DO0 & /DO7 active, all	others off */
return 0;}

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