How to read all the data byte from SCI A PORT (TMS320F28069)

 Hi,

My requirement is to read sequence of bytes (01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F) via SCI A port using interrupt.

So I configured the SCIA for interrupt. When I tried to send the above sequence of data from PC, 1 Rx interrupt is received, but i could able to read only the 4 bytes of data and rest is discarded. Please help me to read all the data received via Rx

Please refer my code sniffet below:

void scia_fifo_init()
{
   SciaRegs.SCICCR.all =0x0007; 
   SciaRegs.SCICTL1.all =0x0003; 
   SciaRegs.SCICTL2.bit.TXINTENA =0;
   SciaRegs.SCICTL2.bit.RXBKINTENA =1;
   SciaRegs.SCIHBAUD = 0x0000;
   SciaRegs.SCILBAUD = 0x0040; //SCI_PRD;
   SciaRegs.SCICCR.bit.LOOPBKENA =0; // Enable loop back

   // SCI FIFO initiate
   SciaRegs.SCIFFTX.all = 0xc000;
   SciaRegs.SCIFFRX.all = 0x0028;
   SciaRegs.SCIPRI.all = 0x0010;

   SciaRegs.SCICTL1.all =0x0023;     // Relinquish SCI from Reset
   SciaRegs.SCICTL1.bit.RXERRINTENA = 1;
   SciaRegs.SCIFFTX.bit.TXFIFOXRESET=1;
   SciaRegs.SCIFFRX.bit.RXFIFORESET=1;

}

interrupt void sciaRxFifoIsr(void)
{
  volatile int data;
  byte Rec_data[20];
  int i=0,j=0;
  while(SciaRegs.SCIFFRX.bit.RXFFST != 0)
  {
   Rec_data[i] = SciaRegs.SCIRXBUF.all;  // Read data
   i++;
  }
  for(j=0;j<i;j++)
  {
   printf("data is %x\n",Rec_data[j]);
  }
  SciaRegs.SCIFFRX.bit.RXFFOVRCLR=1;   // Clear Overflow flag
  SciaRegs.SCIFFRX.bit.RXFFINTCLR=1;   // Clear Interrupt flag
  PieCtrlRegs.PIEACK.all|=0x100;       // Issue PIE ack
}