Aaeon BOXER-6615, User Manual

Page: 99 / 101

Appendix C – Digital I/O Information 86
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}
VOID AaeonSetOutputLevel(byte PinBit, byte Value){
ConfigDioMode(PinBit, OutputPin);
SIOBitSet(DIOLDN, OutputReg_L, PinBit, Value);
}
********************************************************************************
********************************************************************************VOID
SIOEnterMBPnPMode(){
IOWriteByte(SIOIndex, 0x87);
IOWriteByte(SIOIndex, 0x87);
}
VOID SIOExitMBPnPMode(){
IOWriteByte(SIOIndex, 0xAA);
}
VOID SIOSelectLDN(byte LDN){
IOWriteByte(SIOIndex, 0x07); // SIO LDN Register Offset = 0x07
IOWriteByte(SIOData, LDN);
}
VOID SIOBitSet(byte LDN, byte Register, byte BitNum, byte Value){
Byte TmpValue;
SIOEnterMBPnPMode();
SIOSelectLDN(LDN);
IOWriteByte(SIOIndex, Register);