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C Language Library • 59

7.5 _8112_DO

Description

This function is used to write data to the digital output port. There are

16 digital outputs on the ACL-8112, they are divided into two categories,

DO_LO_BYTE and DO_HI_BYTE. Channel 0 to channel 7 is defined

as the DO_LO_BYTE port and channels 8 to 15 are defined as the

DO_HI_BYTE port.

Syntax

int _8112_DO(int port_number, unsigned char data )

int _8112pg_DO(int port_number, unsigned char data )

Argument:

port_number:

DO_LO_BYTE or DO_HI_BYTE

data:

value will be written to digital output port

Return Code:

ERR_NoError

ERR_BoardNoInit

ERR_PortError

Example:

#include “8112.h”

main()

{

_8112_Initial( CARD_1, A8112B_DG, 0x220 );

/* Assume NoError when Initialize ACL-8112/DG ver.B

card */

_8112_DO( DO_LO_BYTE , 0x55 );

printf( "The low byte is now 0x55.\n" );

_8112_DO( DO_HI_BYTE , 0xAA );

printf( "The high byte is now 0xAA.\n" );

}

A more detailed program is provided in this software

'DO_DEMO.C'

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