BESTEK BNX-H81, User Manual

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Table 1: Programmable Switch Relative Register Table
Function Description
BTN_STS Reading this register returns the pin level status which is normal high active low.
0: Pin Level States Low.
1: Pin Level States High.
Table 1: Programmable Switch Register Mapping Table
Attribute Register(I/O) BitNum Value
BTN_STS R 0xA05(Note1) 4(Note2) (Note3)
************************************************************************************
#define Word BTN_STS //This parameter is represented from Note1
#define Byte BTN_STS_R //This parameter is represented from Note2
************************************************************************************
Byte GET_Value (Word IoAddr, Byte BitNum,Byte Value) { BYTE TmpValue;
TmpValue = inportb (IoAddr);
return (TmpValue & (1 << BitNum))
}
************************************************************************************
VOID Main (){
Byte RstBtn;
RstBtn = GET_Value (BTN_STS, BTN_STS_R); // Active Low
}
************************************************************************************
5.4 Programmable Switch