Adlink ACL-8216 Manual de usuario descargar pdf (Pagina 56)

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C/C++ Library

5.9 _8216_AD_Set_Channel

@ Description

This function is used to set AD channel by means of writing data to the

channel multiplexer register. There are 16 single-ended A/D channels

in ACL-8216, so the channel number should be set between 0 to 15

only. The initial state is channel 0 which is a default setting by the

ACL-8216 hardware configuration.

@ Syntax

int _8216_AD_Set_Channel( int ad_ch_no )

@ Argument

ad_ch_no:

channel number to perform AD

conversion

Single-ended mode: Channel no. is from

0~15

Differential mode: Channel no. is from

0~7

@ Return Code

ERR_NoError

ERR_BoardNoInit

ERR_InvalidADChannel

@ Example

#include “aclerr.h”

#include "8216.h"

main()

{

_8216_Initial( CARD_1, 0x220 );

/* Assume NoError when Initialize ACL-8216 */

_8216_AD_Set_Channel( 3 );

printf( "AD channel 3 is now selected.\n" );

/* the following A/D's operation is based on channel

3 */

}

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Adlink ACL-8216 Manual de usuario Pagina 56