UART Rx with DMA Example..

Found two things:

To get rid of the first interrupt that was from a prior execution, or using the UART without DMA prior, I did the following:
1) Added the following line to the UART.C in the function just before the IntRegister command.
UARTIntRegister(unsigned long ulBase, void (*pfnHandler)(void))

// Clear any previous pending Interrupt (Added 1/12/2015).
IntPendClear(ulInt);

This clears any interrupt that is not maskable and already pending. The JTAG reload does not flush these it appears.

2) Added the following at startup, again to make hot restarts with the JTAG work.
// No Interrupt until we want it.. flush pending..
MAP_UARTIntUnregister(UARTA1_BASE);
MAP_UARTDMADisable(UARTA1_BASE,UART_DMA_RX);
MAP_UARTIntClear(UARTA1_BASE,UART_INT_DMARX);

To get the last interrupt from the DMA which I was missing, I changed the UDMA_IF.C
3) In the SetupTransfer function, it has a MAP_uDMAChannelAttributeEnable call which uses the UDMA_ATTR_USEBURST setting.
This is warned against in the user manual because you fail to get the interrupt from the DMA as the last piece of data can be lost in the FIFO.

(Section 4.2.7.1 in SWRU367B)
"If the FIFO peripheral's SETn bit is set in the DMA Channel Useburst Set (DMAUSEBURSTSET) register,
then the uDMA will only perform transfers defined by the ARBSIZ bit field in the DMACHCTL register for
better bus utilization. For peripherals that tend to transmit and receive in bursts, such as the UART, we
recommend against the use of this configuration since it could cause the tail end of transmissions to stick
in the FIFO."

It works correctly if you change this to :
MAP_uDMAChannelAttributeEnable(ulChannel, UDMA_ATTR_HIGH_PRIORITY);

Thanks.