public static void ReceiveByte(int val)
{
SPDR_ReadBuffer = val;
// set the SPIF flag
SPI.SPSR[AtmelIO.SPIF] = 1;
AtmelContext.UpdateInterruptFlags();
}
void UCSR0B_OnRegisterChanged(int oldVal, int newVal)
{
// is the Transmit Compete Interrupt flags being enabled?
if ((newVal & (1 << AtmelIO.UDRIE0)) != 0)
{
// yep, so check if we need to generate an interrupt
AtmelContext.UpdateInterruptFlags();
}
}
void UDR0_OnRegisterChanged(int oldVal, int newVal)
{
// byte is being transmitted
TransmitLog += Convert.ToChar(newVal);
// assume transfer happened immediately and set TXC0
UCSR0A.Value |= (1 << AtmelIO.TXC0);
// check if we need to generate another interrupt
AtmelContext.UpdateInterruptFlags();
}
void SPDR_OnRegisterChanged(int oldVal, int newVal)
{
// make sure SPI is enabled
if (SPI.SPCR[AtmelIO.SPE] == 0)
{
return;
}
// broadcast the byte immediately
if (this.OnReceivedByte != null)
{
this.OnReceivedByte(newVal);
}
// set the transfer complete flag
SPI.SPSR[AtmelIO.SPIF] = 1;
AtmelContext.UpdateInterruptFlags();
}