LAUNCHXL-F28027: SCI Interrupt SCIRXINTA, values not updating

Georgy,

Could you please let me know if you are using the 'driver' or 'structs' version of the example?  If using the 'driver' version, please comment out the following line in "sciaRxFifoIsr" and let me know if this solves the issue:

if(SCI_getRxFifoStatus(mySci) != SCI_FifoLevel_Empty)

Next, if you are using the 'driver' version, please try the 'structs' version and let me know if this works for you.  The 'driver' version is in the process of being deprecated.

I hope this helps. If this answers your question, please click the green "Verified Answer" button. Thanks.

- Ken

I am using the structs version. My receive interrupt and sci initialization function is as below.

__interrupt void sciaRxFifoIsr(void)
{           rData=SciaRegs.SCIRXBUF.all; // Read data

SciaRegs.SCIFFRX.bit.RXFFOVRCLR=1; // Clear Overflow flag
SciaRegs.SCIFFRX.bit.RXFFINTCLR=1; // Clear Interrupt flag

PieCtrlRegs.PIEACK.all|=0x100; // Issue PIE ack     }

void scia_fifo_init()
{
SciaRegs.SCICCR.all =0x0007; // 1 stop bit, No loopback // No parity,8 char bits, // async mode, idle-line protocol
SciaRegs.SCICTL1.all =0x0003; // enable TX, RX, internal SCICLK, // Disable RX ERR, SLEEP, TXWAKE
SciaRegs.SCICTL2.bit.TXINTENA =1;
SciaRegs.SCICTL2.bit.RXBKINTENA =1;
SciaRegs.SCIHBAUD = 0x0000;      // 9600 baud @LSPCLK = 15MHz (60 MHz SYSCLK).
SciaRegs.SCILBAUD = =0x00C2;
SciaRegs.SCICCR.bit.LOOPBKENA =0; // Disable loop back
SciaRegs.SCIFFTX.all=0xC022;
SciaRegs.SCIFFRX.all=0x0022;
SciaRegs.SCIFFCT.all=0x00;

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