Gpio Sample Code - C&T Solution RCO-3200 Series User Manual

Appendix – WDT & GPIO

GPIO Sample Code

⚫ GPI 0 ~ GPI 3
IO Address
Bit
Sample code
⚫ GPO 0 ~ GPO 3
IO Address
Bit
Sample code
GPI_REG equ 0A03h
GPO_REG equ 0A02h
GPO_0 equ 00000001b
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Sample Code:
#1 : Get GPI 0 status
; Get GPI 0 Pin Status Register
In al, GPI_REG
;al bit4 = GPI 0 status
#2 : Set GPO 0 status to high
; Set GPO 0 Pin to High
mov dx, GPO_REG
in al, dx
or al, GPO_0
out dx, al
;al bit0 = GPO 0 status
GPI 0 GPI 1
0xA03h 0xA03h
4 5
#1
GPO 0 GPO 1
0xA02h 0xA02h
0 1
#2
GPI 2 GPI 3
0xA03h 0xA03h
6 7
GPO 2 GPO 3
0xA02h 0xA02h
2 3
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