Aplex-technology ACS-2645 Manuale Utente Scaricare il pdf (Pagina 54)

ACS-2645 User Manual

54

GP = inportb(0x4F); //Bit[3::0] = GPI[3::0]



Write GPIO value

Example x86 assembly code:

;Set GPO62

mov dx, 4Eh

mov al, 0E5h ;GPIO data reg.

out dx, al

mov dx, 4Fh

in al, dx

or al, 00000100b ;Bit2 = GPO62

out dx, al

;Clear GPO62

mov dx, 4Eh

mov al, 0E5h ;GPIO data reg.

out dx, al

mov dx, 4Fh

in al, dx

and al, not 00000100b

out dx, al

Example C code:

//Set GPO62

outportb(0x4E, 0xE5); //GPIO data reg.

Outportb(0x4F, (inportb(0x4F)|0x4)); //Set Bit[2]

//Clear GPO62

outportb(0x4E, 0xE5); //GPIO data reg.

Outportb(0x4F, (inportb(0x4F)&0xFB)); //Clear Bit[2]

The followings are C language source code:

#include "stdio.h"

#include "conio.h"

//Super I/O index access port

#define INDEXP 0x4E

#define DATAP 0x4F

//Enter super I/O programming mode

#define ENTERPRG { \

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