ENDAT-3857 USERS MANUAL
UNICORN COMPUTER CORP.
26
Sample code for output (using Turbo C/C++ 3.0):
bit
No 7 6 5 4 3
2
1
0
Map
NA NA NA NA
DIO-O3
DIO-O2
DIO-O1
DIO-O0
Sample code for output (using Turbo C/C++ 3.0)
outportb(0x2e,0x87); //Unlock
register
outportb(0x2e,0x87); //Unlock
register
outportb(0x2e,0x07);
//set Logic Device number pointer
outportb(0x2f,0x07);
//set Logic Device number
outportb(0x2e,0x30);
//set Device Active
outportb(0x2f,0x04);
// set Bit 2 =GPIO2 ; 0=Inactive / 1= Active Default: FCh
outportb(0x2e,0xE8);
// set GPIO Output / Input Port
outportb(0x2f,0xF0);
//
0=Output/
1=Input
// Bit 0~3 DIO-O0~ DIO3 / Bit4~7 DIO-I0~DIO-I3.
outportb(0x2e,0xE9);
//Read DIO-Input register.
outportb(0x2f,0xnm); //
n=DIO-I0~DIO-I3 / m=DIO-O0~DIO-O3.
Bit7~Bit3
=
DIO-I3~DIO-I0.(Read
Only)
