__interrupt void UartInterrupt(void)
{
Word_t VectorRegister;
volatile char Dummy;
/* Read the Vector register once to determine the cause of the */
/* interrupt. */
VectorRegister = BT_UART_IVR;
/* Determine the cause of the interrupt (Rx or Tx). */
if(VectorRegister == USCI_UCRXIFG)
{
/* Check to see if there is buffer space to receive the data. */
if(UartContext.RxBytesFree)
{
/* check to see if an overrun occured. */
if(HWREG8(UartContext.UartBase + MSP430_UART_STAT_OFFSET) & 0xEC)
HAL_ConsoleWrite(1, "?");
/* Read the character from the UART Receive Buf. */
UartContext.RxBuffer[UartContext.RxInIndex++] = UARTReceiveBufferReg(UartContext.UartBase);
/* Credit the received character. */
--(UartContext.RxBytesFree);
/* Check to see if we have reached the end of the Buffer and */
/* need to loop back to the beginning. */
if(UartContext.RxInIndex >= UartContext.RxBufferSize)
UartContext.RxInIndex = 0;
/* Check to see if we need to Disable Rx Flow */
/* RxThread will re-enable flow control when it is possible */
if((UartContext.Flags & UART_CONTEXT_FLAG_FLOW_ENABLED) && (UartContext.RxBytesFree <= UartContext.XOffLimit))
{
/* if Flow is Enabled then disable it */
UartContext.Flags &= (~UART_CONTEXT_FLAG_FLOW_ENABLED);
FLOW_OFF();
}
}
else
{
/* We have data in the FIFO, but no place to put the data, */
/* so will will have to flush the FIFO and discard the data. */
Dummy = UARTReceiveBufferReg(UartContext.UartBase);
/* Flag that we have encountered an RX Overrun. */
/* Also Disable Rx Flow. */
UartContext.Flags |= UART_CONTEXT_FLAG_RX_OVERRUN;
UartContext.Flags &= (~UART_CONTEXT_FLAG_FLOW_ENABLED);
FLOW_OFF();
}
/* If the UART is in the process of shutting down flag that this */
/* has been interrupted due to the arrival of UART data. */
if(UartContext.SuspendState == hssSuspendWait)
{
/* Indicate the suspend is interrupted. */
UartContext.SuspendState = hssSuspendWaitInterrupted;
}
}
else
{
if(VectorRegister == USCI_UCTXIFG)
{
/* Process the Transmit Empty Interrupt. */
TxTransmit();
}
}
/* Exit from LPM if necessary (this statement will have no effect if */
/* we are not currently in low power mode). */
LPM_EXIT();
}
static void DisplayCallback(char Character) {
HAL_ConsoleWrite(1, &Character);
}
