Asus AAEON COM-BT-A30 User Manual page 97

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Boolean AaeonReadPinStatus(byte OptionReg, byte BitNum){
Byte TempByte;
TempByte = ECBRAMReadByte(BRAMFnData1Reg, OptionReg);
If (TempByte & BitNum == 0)
Return 0;
Return 1;
}
VOID AaeonSetOutputLevel(byte OptionReg, byte BitNum, byte Value){
Byte TempByte;
TempByte = ECBRAMReadByte(BRAMFnData1Reg, OptionReg);
TempByte |= (Value << BitNum);
ECBRAMWriteByte(OptionReg, BitNum, Value);
}
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Appendix C – Programming Digital I/O 85