Adlink ACL-8111 Manual de usuario descargar pdf (Pagina 44)

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C/C++ Library for DOS

5.5 _8111_DI _Channel

@ Description

This function is used to read data from digital input channels (bit). There

are 16 digital input channels on the ACL-8111. When performs this

function, the digital input port is read and the value of the corresponding

channel is returned.

Note: channel means each bit of digital input ports.

@ Syntax

int _8111_DI_Channel(int di_ch_no, unsigned int

*data )

@ Argument:

di_ch_no: the DI channel number, the value has to be

set from 0 to 15.

data: return value, either 0 or 1.

@ Return Code:

ERR_NoError

ERR_BoardNoInit

ERR_InvalidDIChannel

@ Example:

#include “8111.h”

main()

{

unsigned int data;

int ch;

_8111_Initial( CARD_1, 0x220 );

/* Assume NoError when Initialize ACL-8111

for( ch=0; ch<16; ch++ )

{

_8111_DI_Channel( ch , &data );

printf( "The value of DI channel %d

is %d.\n" , ch , data );

}

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Adlink ACL-8111 Manual de usuario Pagina 44