TMS570LC4357: SCI3 Interrupt Driven Loopback Mode

I am trying to setup SCI3 to be able to receive a packet of data (waiting on an 0x0A) but I am only getting one sciNotification fired.

I have read information on other threads on the forum and am following the advise but I can't get my code to work.

Can someone help please?

Using HALCoGen I have setup the following:

• Enabled SCI3 Driver
• Enabled VIM Channel 64: SCI3 High
• SCI3 Global:
  • TX INT 
  • RX INT
• SCI3 Data Format
  • 115200 Baud Rate
  • 1 Stop Bit
  • 8 Data Bits
  • No Parity Enable
  • No Even Parity
• SCI3 Port
  • TX, RX pins in Functional Mode

My code is as follows:

#include <string.h>

#include "HL_sys_common.h"

#include "HL_sys_core.h"

#include "HL_sci.h"

uint8 rx_idx;
uint8 rx_buf[ 32 ];
uint8 tx_buf[ 32 ];

int main(void)
{

uint8 ch;

memset( &rx_buf, 0x00, sizeof( rx_buf ) );
rx_idx = 0;

memset( &tx_buf, 0xAA, sizeof( tx_buf ) - 1 );
tx_buf[ sizeof( tx_buf ) - 1 ] = 0x0A;

sciInit();

_enable_interrupt_();

sciEnableNotification( sciREG3, SCI_RX_INT );
sciEnableLoopback( sciREG3, Digital_Lbk );
sciReceive( sciREG3, 1, ( uint8 * ) &ch );

sciSend( sciREG3, 32, ( uint8 * ) &tx_buf[ 0 ] );

while ( 1 );

return 0;

}

void sciNotification( sciBASE_t *sci, uint32 flags )
{

uint8 ch;

sciReceive( sci, 1, ( uint8 * ) &ch );

if ( ch == 0x0A )
{

rx_idx = 0;

}
else
{

/* Store character in corresponding SCI Rx Buffer and post increment array index */
rx_buf[ rx_idx ]= ch;
rx_idx++;

}

}

I have attached the HALCoGen project:

1768.SCI.zip