Contec DAI12-4FITGY, Руководство пользователя, Страница: 38 / 65

Using the I/O Address Map
DAI12-4(FIT)GY
33
Sample program
/*======================================================
Sample program 1
DEVICE ID: 0
Mode: Software Mode, Partially
Transparent
Channel: 0 to 3ch
Range: -10 to 10V
Internal Clock: N/A
Interrupt: N/A
====================================================== */
#include <stdio.h>
#include <conio.h>
/* ----- Constant -------------------------------------- */
#define ADR
0x0800 /* I/O address */
/* ----- Prototype ------------------------------------- */
void main( void );
/* ----- Main ------------------------------------------ */
void main( void )
{
unsigned char UpperData = 0x0c;
unsigned char LowerData = 0x00;
unsigned char i;
float VDAT;
outp( ADR+0x18, 0x00 ); /* Initialize */
outp( ADR+0x18, 0x02 ); /* D/A Conversion Mode */
outp( ADR+0x1c, 0x00 ); /* Software */
outp( ADR+0x18, 0x03 ); /* Range */
outp( ADR+0x1c, 0x00 ); /* -10 to 10V */
VDAT = (UpperData*0x100+LowerData)*20.0f/4096.0f-10.0f;
for(i = 0; i < 4; i++) {
while( ( (unsigned char)inp( ADR+0x16 ) ) & 0x01 );
outp( ADR+0x12, 0x00+i ); /* Set Channel */
outp( ADR+0x10, LowerData ); /* Set Lower Data */
outp( ADR+0x11, UpperData ); /* Set Upper Data */
while( !((unsigned char)inp( ADR+0x16 ) & 0x02) );
printf("%01dch %02x%02x %7.3f[V]\n", i, UpperData,
LowerData, VDAT);
}
}
/* ----------------------------------- End of file --- */