AAEON PICO-HD01 - Manual (Page 101)

P I C O - I T X B o a r d P I C O - H D 0 1
Appendix E Electrical Specifications for I/O Ports E-5
E.4 Digital I/O Sample Program
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// SuperIO relative definition (Please reference to Table 2)
#define SIOIndex 0x2E
#define SIOData 0x2F
#define DIOLDN 0x06
IOWriteByte(byte IOPort, byte Value);
IOReadByte(byte IOPort);
// DIO relative definition (Please reference to Table 3)
#define DirReg 0xD0 // 0:input, 1: output
#define InputPin 0x00
#define OutputPin 0x01
#define OutputReg 0xD1 // 0:low, 1: high
#define StatusReg 0xD2 // 0:low, 1: high
#define PinLow 0x00
#define PinHigh 0x01
#define Pin1Bit 0x00
#define Pin2Bit 0x01
#define Pin3Bit 0x02
#define Pin4Bit 0x03
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VOID Main(){
Boolean PinStatus ;
// Procedure : AaeonReadPinStatus
// Input :
// Example, Read Digital I/O Pin 3 status
// Output :
// InputStatus
:
// 0: Digital I/O Pin level is low
// 1: Digital I/O Pin level is High
PinStatus = AaeonReadPinStatus(Pin3Bit);