www.pudn.com > 8255_code_lib.rar > I8255F08.C

/*- 
 *  ---------------------------------------------------------------------- 
 *  File        :   I8255F08.C 
 *  Creator     :   Blake Miller 
 *  Version     :   01.00.00        February 1991 
 *  Language    :   Microsoft C     Version 5.1 
 *  Purpose     :   Intel 8255 Compatible Digital IO Functions 
 *              :   Read All 8255 Bytes 
 *  ---------------------------------------------------------------------- 
 */ 
 
#define  I8255F08_C_DEFINED  1 
#include "I8255FN.H" 
#undef   I8255F08_C_DEFINED 
 
void I8255_load_bytes (I8255DAT *data); 
 
/*- I8255 : Load Bytes -----------------------** 
 *  Read all of the bytes of the 8255 into the data area. 
 *  Passed: 
 *      pointer :   I8255DAT 
 *  Returns: 
 *      nothing 
 */ 
void I8255_load_bytes (I8255DAT *data) 
	{ 
	unsigned char   ival;   /* input value  */ 
 
	/* Port A data */ 
	chp_portrd ( I8255_PORTA(data->base), &ival ); 
	data->adat = ival; 
 
	/* Port B data */ 
	chp_portrd ( I8255_PORTB(data->base), &ival ); 
	data->bdat = ival; 
 
	/* Port C data */ 
	chp_portrd ( I8255_PORTC(data->base), &ival ); 
	data->cdat = ival; 
 
	data->stat = I8255_ST_OK; 
	} 
 
/*- 
 *  ---------------------------------------------------------------------- 
 *  END I8255F08.C Source File 
 *  ---------------------------------------------------------------------- 
 */