Aplex-technology ACS-2645 Manuale Utente Scaricare il pdf (Pagina 53)

ACS-2645 User Manual

outportb(0x4E, 0x30); //Logic device activation control

outportb(0x4F, (inportb(0x4F)|0x4));

//Set bit[2] to enable GPIO Port6 if LDN=8

Configure GPIO register

Example x86 assembly code:

mov dx, 4Eh

mov al, 0E6h ;GPIO inversion reg.

out dx, al

mov dx, 4Fh

mov al, 000h ;0 – normal, 1 - inverted

out dx, al

mov dx, 4Eh

mov al, 0E4h ;GPIO I/O selection reg.

out dx, al

mov dx, 4Fh

mov al, 0FFh ;0 – Output, 1 – Input

;or mov al, 0F0h to set output

out dx, al

Example C code:

outportb(0x4E, 0xE6); //GPIO I/O selection reg.

outportb(0x4F, 0x0); //0 – normal, 1 – inverted

outportb(0x4E, 0xE4); //GPIO inversion reg.

outportb(0x4F, 0xFF); //0 – Output, 1 - Input

outportb(0x4E, 0xE4); //GPIO inversion reg.

outportb(0x4F, 0xF0); //0 – Output, 1 – Input

Read GPIO value

Example x86 assembly code:

mov dx, 4Eh

mov al, 0E5h ;GPIO data reg.

out dx, al

mov dx, 4Fh

in al, dx ;Bit[3::0] = GPI[3::0] value

Example C code:

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

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Aplex-technology ACS-2645 Manuale Utente Pagina 53