MSI MS-9988, Руководство пользователя

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WDT & GPIO COM Express Carrer Board
A-3
WDT & GPIO COM Express Carrer Board
GPIO Sample Code
JGPIO1

GPI 0 ~ GPI 3
GPI 0 GPI 1 GPI 2 GPI 3
IO Address
SIO GPIO Register B2h
Bit 0 1 2 3
Sample code #1

GPO 0 ~ GPO 3
GPO 0 GPO 1 GPO 2 GPO 3
IO Address
SIO GPIO Register B1h
Bit 4 5 6 7
Sample code #2
SIO_INDEX_Port equ 04Eh
SIO_DATA_Port equ 04Fh
SIO_UnLock_Value equ 087h
SIO_Lock_Value equ 0AAh
SIO_LDN_GPIO equ 06h
GPI_REG equ 0B2h
GPO_REG equ 0B1h
GPO0_Value equ 00010000b
Sample Code:
#1 : Get GPI 0 status
; Enable config mode
mov dx, SIO_INDEX_Port
mov al, SIO_UnLock_Value
out dx, al
jmp short $+2 ;Io_delay
jmp short $+2 ;Io_delay
out dx, al
; Switch GPIO Configuration for SIO LDN 0x06
mov dx, SIO_INDEX_Port
mov al, 07h
out dx, al
mov dx, SIO_DATA_Port
mov al, SIO_LDN_GPIO
out dx, al
; Get GPI 0 Pin Status Register