AAEON EMB-H61B - Manual (Page 81)

I n d u s t r i a l M o t h e r b o a r d E M B - H 6 1 B
Appendix C Electrical Specifications for I/O Ports C-9
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Boolean SIOBitRead(byte LDN, byte Register, byte BitNum) {
Byte TmpValue;
SIOEnterMBPnPMode();
SIOSelectLDN(LDN);
IOWriteByte(SIOIndex, Register);
TmpValue = IOReadByte(SIOData);
TmpValue &= (1 << BitNum);
SIOExitMBPnPMode();
If(TmpValue == 0)
Return 0;
Return 1;
}
VOID ConfigToOutputMode(byte LDN, byte Register, byte BitNum) {
Byte TmpValue, OutputEnableReg;
OutputEnableReg = Register-1;
SIOEnterMBPnPMode();
SIOSelectLDN(LDN);
IOWriteByte(SIOIndex, OutputEnableReg);
TmpValue = IOReadByte(SIOData);
TmpValue |= (1 << BitNum);
IOWriteByte(SIOData, OutputEnableReg);
SIOExitMBPnPMode();
}
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