Unicorn ENDAT-7301M, Руководство пользователя

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The ENDAT-7301M System Board
2-6. Digital I/O
1) Pin out of digital I/O header (JP4):
Pin No. Function Pin No. Function
1
+5V
2
+5V
3
DIO-O0
4
DIO-I0
5
DIO-O1
6
DIO-I1
7
GND
8
GND
9
DIO-O2
10
DIO-I2
11
DIO-O3
12
DIO-I3
13
+3.3V
14
+3.3V
2) Digital I/O port address:
This function is support by onboard super I/O chip; it can be control easily by
change the register of super I/O chip via I/O port “2Eh” and “2Fh”. Please see
the sample code of below for implement.
Voltage tolerance: +/- 5% with 0V to +5V.
Sample code for input (using Turbo C/C++ 3.0):
#define input_port 0x2f
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,0xF1); // Set active register is CRF1
read_data=inportb(input_port); // Read digital input data
printf("DIO-Input=%02X\n",read_data); //Show digital input data on screen
Register configuration:
Bit No 7 6 5 4 3 2 1 0
Map
IN3 IN2 Out 3 Out 2 Out 1 Out 0 IN1 IN0
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,0xF1); //Set active register is CRF1
outportb(0x2f,0xnn); //Write data to digital output