
Functions > di_digin

Syntax

di_digin is an immediate function that reads a 16-bit value from the digital input port. Values and locations are device dependent.

unsigned di_digin(void);

Parameters

none

The function returns two bytes from the digital input port.

The default state of the digital input bits is “High.” Values and locations of the digital input bits are device dependent.

#include "200sdk.h"
int i;
char errstr[255];
main()
{
if(errcode = di_open()){	/* open the device for comm */
di_strerr(errcode,errstr);
printf("%s",errstr);
}
else
printf("Device installed successfully.....\n");
i = di_digin();	/* read digital input port */
printf("Digital input port = %04X\n",i);
di_close();
}