Contec DAI12-4FITGY, Руководство пользователя, Страница: 43 / 65

Using the I/O Address Map
38
DAI12-4(FIT)GY
Sample Program
/*======================================================
Sample program 3
DEVICE ID: 0
Mode: Clock Mode, Partially Simultaneous
Conversion
Channel: 0 to 3ch
Range: -10 to 10V
Internal Clock: 1sec (250ns x 4,000,000)
Interrupt: IRQ5 11 times
====================================================== */
#include <stdio.h>
#include <conio.h>
#include <dos.h>
/* ----- Constant -------------------------------------- */
#define ADR
0x0800 /* I/O address */
#define CH 4 /* Channels */
#define NUM 11 /* Conversion Times */
#define IRQ5 0 /* IRQ5 */
#define IRQ7 1 /* IRQ7 */
#define IRQ9 2 /* IRQ9 */
volatile unsigned int DaData[CH][NUM];
/* D/A Data */
volatile int intcnt = 0;
/* interrupt counter */
volatile int IrqLevel = IRQ5;
/* interrupt level */
volatile int Irqsts;
/* interrupt level */
int OrgMasterImr, OrgSlaveImr;
/* original IMR */
unsigned char IntVector[3] = { 0x0d, 0x0f,
0x71 };
/* interruput vector */
unsigned char PicMask[3] = { 0xdf, 0x7f, 0xfd };
/* mask bit */
unsigned char IsrClear[3] = { 0x65, 0x67, 0x61 };
/* ISR clear */
unsigned char IntEnable[3] = { 0x81, 0x82,
0x84 };
/* interrupt enable */
/* ----- Prototype ------------------------------------- */
void main( void );
void Initialize( void );
/* initialize */
void ChgVect( void ); /* change vector */
void ResVect( void ); /* restore vector */
void _interrupt _far inthandler( void );
/* interrupt handler */
void ( _interrupt _far *OrgVect)();
/* original interrupt vector */