Access IOD-144 user manual TURBO-C Program

DIGITAL INPUT/OUTPUT CARD IOD-144 USER MANUAL

{to wait to be re-armed}

end.

TURBO-C PROGRAM

#define BASEADDR 0x300		/*declare base address for IOD card*/
#define ON	1	/*create useful constant*/
#define OFF	0	/* " "	" */
#include "stdio.h"
#include "conio.h"
#include "time.h"
#include "dos.h"
int sensors_at_arm[15];
int sensors_now[15];		/*bit-by-bit status of sensors at current time. When*/
		/*compared against status of sensors at arm, indicates
		*/
		/*break-in if there is a change.*/
int arming_stations;		/*variables representing all four arming stations. If the*/
int_old_arming_stations;		/*value changes, toggle alarm ON/OFF*/
char key;		/*useful temporary variable*/
int i;		/*useful temporary variable used in loops*/
int j;		/*useful temporary variable*/

initialize(){

outportb(BASEADDR+3,0x93); /*outportb(addr,byte) is C's method of */ /*accessing port memory. This procedure sets*/ /*cPort A, B, and C LO as inputs and Port C Hi as*/ /*outputs. Address hex 303 is the control register */ /*The bit pattern needed to set the desired mode */ /*and port designation is 10010011, 93 hex */

} /*procedure initialize*/

read_sensors(int *ary){ unsigned char tempA; unsigned char tempB;

tempA = inportb(BASEADDR); tempB = inportb(BASEADDR+1);

for(i-0;i<8;i++){
if((tempA>> i) & ON){	/*this determines if bit #i is on and sets the
corresponding*/
*ary++=ON;}	/*array element to ON if it is. If not, sets the array */
else{	/*to OFF*/
*ary++=OFF;
}
for(i=0;i<8;i++){

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