public Uart(SerialControlRegister controlRegister)
{
SerialControlRegister = controlRegister;
Transmitter = new Transmitter(controlRegister);
Receiver = new Receiver(controlRegister);
BaudPulse += Transmitter.HandleBaudPulse;
BaudPulse += Receiver.HandleBaudPulse;
Transmitter.DataTransmitting += OnTransmitting;
Transmitter.DataTransmitting += Receiver.HandleDataTransmitting;
}
public static bool ComputeParityBit(byte data, SerialControlRegister register)
{
// "The 9th bit is always sent. It is either the result of a parity calculation on the transmit
// data byte or it is the value set in the parity select bit in the control register.
// The choice is made by the parity enable bit in the control byte. For example :
// If PAREN is '0', then the 9th bit will be whatever the state of PAREVEN is."
if (!register.TransmitParityEnable)
{
return(register.ParityEven);
}
// If PAREN is '1' and PAREVEN is '0', then the 9th bit will be the result of an 'odd' parity calculation
// on the transmit data byte.
return(CalculateParity(data, register.ParityEven));
}
public Transmitter(SerialControlRegister register)
{
this.controlRegister = register;
}
public Receiver(SerialControlRegister register)
{
this.controlRegister = register;
}
