User`s manual

ENDAT-D2550 USERS MANUAL

UNICORN COMPUTER CORP.

Sample code for input (using Turbo C/C++ 3.0)

#define input_port 0x4f // Digital input data port

Unsigned char read_data;

outportb(0x4e,0x87); //Unlock register

outportb(0x4e,0x07); //set Logic Device number pointer

outportb(0x4f,0x07); //set Logic Device number

outportb(0x4e,0x2A); //set GOIP Function

outportb(0x4f,0xFC); //set GP10~GP17

outportb(0x4e,0x30); //set Device Active

outportb(0x4f,0x01); // set Bit 1 = Active; 0=Disable

outportb(0x4e,0xF0); // set GPIO Output / Input Port

outportb(0x4f,0xC3); // 0=Output/ 1=Input

//Bit 2~5 DIO-O4~ DIO-O7.

//Bit 0,1,6,7 DIO-I4~DIO-I7.

outportb(0x4e,0xF1); //Read DIO-Input register.

outportb(0x4f,0xnm); //Bit 2~5 DIO-O4~ DIO-O7.

//Bit 0,1,6,7 DIO-I4~DIO-I7..(Read Only)

read_data=inportb(input_port); // Read digital input data

printf("DIO-Input=%02X\n",read_data); //Show digital input data on screen

Sample code for input (using Turbo C/C++ 3.0):

bit No 7 6 5 4 3 2 1 0

Map

NA NA DIO-O7 DIO-O6 DIO-O5 DIO-O4 NA NA

Sample code for output (using Turbo C/C++ 3.0)