WDT & GPIO
COM Express Carrer Board
A-5
WDT & GPIO
COM Express Carrer Board
JGPIO2
GPI 0 ~ GPI 3
GPI 0 GPI 1 GPI 2 GPI 3
IO Address
EC GPIO Register
16h
Bit
4
5
6
7
Sample code
#1
GPO 0 ~ GPO 3
GPO 0 GPO 1 GPO 2 GPO 3
IO Address
EC GPIO Register
16h
Bit
0
1
2
3
Sample code
#2
INDEX_Port
equ
066h
DATA_Port
equ
062h
Read_cmd
equ
080h
Write_cmd
equ
081h
GPI_REG
equ
016h
GPO_REG
equ
016h
GPO0_Value
equ
00000001b
Sample Code:
#1 : Get GPI 0 status
; Enable config mode
mov dx, INDEX_Port
mov al, Read_cmd
out dx, al
jmp short $+2
;Io_delay
jmp short $+2
;Io_delay
; Get GPI 0 Pin Status Register
mov
dx, DATA_Port
mov
al, GPI_REG
out
dx, al
mov
dx, DATA_Port
in al, dx
;al bit4 = GPI 0 status
Summary of Contents for MS-9988
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