28027f launchpad sci fifo 中断

检查一下GPIO引脚配置，另外确定PIE级别有使能接收中断。

另外参考controlSUITE例程进行排查：C:\ti\controlSUITE\device_support\f2802x\v230\f2802x_examples_structs\scia_loopback_interrupts

Eric

gpio引脚配置应该没啥问题，而且我的发送数据已经被成功接收，以下是我的main函数代码，不知道pie级的中断设置是否正确

InitGpio();
UART_Simulation_GPIO_Init();

InitSysCtrl();

InitSciGpio();

// Disable and clear all CPU interrupts:
DINT;

InitPieCtrl();

IER = 0x0000;
IFR = 0x0000;

InitPieVectTable();

EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.SCIRXINTA = &sciaRxFifoIsr;
PieVectTable.SCITXINTA = &sciaTxFifoIsr;
EDIS; // This is needed to disable write to EALLOW protected registers
//
InitCpuTimers(); // For this example, only initialize the Cpu Timers

EnableInterrupts();

scia_fifo_init(); // Initialize the SCI FIFO
scia_loopback_init(); // Initalize SCI for digital loop back

CPUTimer_Userset(&CpuTimer0,10,100);
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.TINT0 = &cpu_timer0_isr;
PieVectTable.TINT1 = &cpu_timer1_isr;
PieVectTable.TINT2 = &cpu_timer2_isr;
EDIS; // This is needed to disable write to EALLOW protected registers

PieCtrlRegs.PIEIER1.bit.INTx7=1;
// Enable interrupts required for this example
PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
PieCtrlRegs.PIEIER9.bit.INTx1=1; // PIE Group 9, INT1
PieCtrlRegs.PIEIER9.bit.INTx2=1; // PIE Group 9, INT2
IER = 0x100; // Enable CPU INT
// EINT;

IER |= M_INT1;
IER |= M_INT13;
IER |= M_INT14;

EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM

CpuTimer0Regs.PRD.all = mSec1;
CpuTimer1Regs.PRD.all = mSec5;
CpuTimer2Regs.PRD.all = mSec1000;

Scia_Rx_Init();
for(;;)
{

if(Scia_Txwait>=500)
{
Scia_Txwait=0;
scia_xmit_sendchar();

GPIO_UART1_SendChar();
}
}

PIE级别有使能接收中断应该怎样设置？

PIE中断我看到你已经打开了，你有试一下controlSUITE中的例程吗？另外注意就是进中断有FIFO的级别的，你设置是SciaRegs.SCIFFRX.all=0x0022，就表示只有接收超过2个数据，才会进中断。

PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
PieCtrlRegs.PIEIER9.bit.INTx1=1; // PIE Group 9, INT1
PieCtrlRegs.PIEIER9.bit.INTx2=1; // PIE Group 9, INT2
IER = 0x100; // Enable CPU INT

接收的数据是12字节，每次开中断我处理两个字节，12个字节处理完计算checksum，就是不知道问题出在哪里

interrupt void sciaRxFifoIsr(void)
{

Uint16 i;
for(i=Scia_Rx_Cnt;i<(2+Scia_Rx_Cnt);i++)
{
if(i!=Scia_RxBL)
Scia_RxBUF[i]=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
Scia_Rx_Cnt+=2;
if(Scia_Rx_Cnt>=Scia_RxBL)
{
COM1Rx_CheckSum();
}