AXIOMTEK SBC86822 Series, User Manual

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SBC86822 Series All-In-One Mini ITX Board User’s Manual
Digital I/O
75
A p p e n d i x B
Digital I/O
Digital I/O Software Programming
z GPI program sample:
I 402A
Read DI0~DI4 Status
z GPO program sample:
O 2E 87
O 2E 87
O 2E 07
O 2F 08 Select Device 8
O 2E 30
O 2F 04
Set GPIO6
O 2E E4
O 2F 00
GPIO6 pins are programmed as output
pins.
O 2E E5
O 2F 00
Clear Data Register
O 2E E6
O 2F N
Set DO0~DO4 Status
N = 00 ~ 0F