Quanmax KEEX-1760 Series - Page 56

Appendix A
56
KEEX
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17
6
0 Series Use r’s Manual
Appendix A
DIO (Digital I/O) Sample Code
//***************************************************************//
//DIO sample code for KEEX-1760 //
//Please compile with Turbo C 3.0 to utilized the program //
// //
//DIO GPIO pin define from SIO IT8783E //
// DIO_0 : SOC S5_GPIO4 DIO_4 : SOC S5_GPIO22 //
// DIO_1 : SOC S5_GPIO5 DIO_5 : SOC S5_GPIO23 //
// DIO_2 : SOC S5_GPIO6 DIO_6 : SOC S5_GPIO24 //
// DIO_3 : SOC S5_GPIO7 DIO_7 : SOC S5_GPIO25 //
// //
//***************************************************************//
#include <stdio.h>
#include <conio.h>
#include <dos.h>
typedef unsigned long DWORD;
#define GPIO_BASE 0x500
#define GPIO1_SEL 0x84
#define GPIO1_LVL 0x88
#define SET_IO32(IoAddr, dSet) outpd(IoAddr, inpd(IoAddr) | (dSet))
#define RESET_IO32(IoAddr, Rst) outpd(IoAddr, inpd(IoAddr) &~ (Rst))
#define READ_IO32(IoAddr) inpd(IoAddr)
DWORD inpd(int portid)
{
DWORD dwRet;
asm mov dx, portid;
asm lea bx, dwRet;