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58 • C Language Library

7.4 _8112_DI _Channel

Description

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

There are 16 digital input channels on the ACL-8112. When performing

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

corresponding channel is returned.

* channel means each bit of the digital input ports.

Syntax

int _8112_DI_Channel(int di_ch_no, unsigned int

*data )

int _8112pg_DI(int di_ch_no, unsigned int *data )

Argument:

di_ch_no:

the DI channel number, the value is

between from 0 to 15.

data:

return value, either 0 or 1.

Return Code:

ERR_NoError

ERR_BoardNoInit

ERR_InvalidDIChannel

Example:

#include “8112.h”

main()

{

unsigned int data;

int ch;

_8112_Initial( CARD_1, A8112B_HG, 0x220 );

/* Assume NoError when Initialize ACL-8112 */

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

{

_8112_DI_Channel( ch , &data );

printf( "The value of DI channel %d is

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

}

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Adlink ACL-8112 Series Manual do Utilizador Página 66