C/C++ Library for DOS
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5.12 _8111_AD_Aquire
@ Description
This function is used to poll the AD conversion data. It will trigger the AD
conversion, and read the 12-bit A/D data until the data is ready ('data
ready' bit becomes low).
@ Syntax
int _8111_AD_Aquire( int *ad_data )
@ Argument:
ad_data: 12-bit A/D converted value, the value should
within 0 to 4095.
@ Return Code:
ERR_NoError
ERR_BoardNoInit
ERR_AD_AquireTimeOut
@ Example:
#include “aclerr.h”
#include “8111.h”
main()
{
int ad_data;
int ErrCode;
_8111_Initial( CARD_1, 0x220 );
/* Assume NoError when Initialize ACL-8111
*/
/* Set to software trigger at first*/
_8111_AD_Set_Mode( IRQ5, AD_MODE_1 );
/* then trigger the AD */
_8111_AD_Soft_Trig();
/* wait for AD data ready then read it */
ErrCode = _8111_AD_Aquire( &ad_data );
if( ErrCode == ERR_NoError )
printf( "The AD value is %d.\n", ad_data );
else
printf( "AD conversion error happen\n" );
}
Also see deme program 'AD_DEMO1.C'
