Hello everyone, I have some problems with the initialization of the interrupts. I have used the example code provided by the TI, unfortunatelly I am still not able generate any interrupts. Following code was applied,

[c]

void DeviceInit(void)
{
    WDogDisable();     // Disable the watchdog initially
    DINT;            // Global Disable all Interrupts
    IER = 0x0000;    // Disable CPU interrupts
    IFR = 0x0000;    // Clear all CPU interrupt flags

// SYSTEM CLOCK speed based on Crystal = 20 MHz
// 0xA =  100    MHz        (10)
// 0x9 =  90    MHz        (9)
// 0x8 =  80    MHz        (8)
// 0x7 =  70    MHz        (7)
// 0x6 =  60    MHz        (6)
// 0x5 =  50    MHz        (5)
// 0x4 =  40    MHz        (4)
// 0x3 =  30    MHz        (3)
// 0x2 =  20    MHz        (2)

    PLLset(0xA);    // choose from options above

// Initialise interrupt controller and Vector Table
// to defaults for now. Application ISR mapping done later.
    PieCntlInit();        
    PieVectTableInit();

   EALLOW; // below registers are "protected", allow access.

// HIGH / LOW SPEED CLOCKS prescale register settings
   SysCtrlRegs.HISPCP.all = 0x0002;        // Sysclk / 4 (25 MHz)
   SysCtrlRegs.LOSPCP.all = 0x0002;        // Sysclk / 4 (25 MHz)
   SysCtrlRegs.XCLK.bit.XCLKOUTDIV=2;
          
// PERIPHERAL CLOCK ENABLES 
//---------------------------------------------------
// If you are not using a peripheral you may want to switch
// the clock off to save power, i.e. set to =0 
// 
// Note: not all peripherals are available on all 280x derivates.
// Refer to the datasheet for your particular device. 

   SysCtrlRegs.PCLKCR0.bit.ADCENCLK = 1;    // ADC
   //------------------------------------------------
   SysCtrlRegs.PCLKCR0.bit.I2CAENCLK = 0;   // I2C
   //------------------------------------------------
   SysCtrlRegs.PCLKCR0.bit.SPIAENCLK=0;     // SPI-A
   SysCtrlRegs.PCLKCR0.bit.SPIBENCLK=0;     // SPI-B
   SysCtrlRegs.PCLKCR0.bit.SPICENCLK=0;     // SPI-C
.
.
.
    GpioDataRegs.GPBSET.bit.GPIO34 = 1;        // uncomment if --> Set High initially
//--------------------------------------------------------------------------------------
    EDIS;    // Disable register access
}

[/c]

[c]

// This function initializes the PIE control registers to a known state.
//
void PieCntlInit(void)
{
    // Disable Interrupts at the CPU level:
    DINT;

    // Disable the PIE
    PieCtrlRegs.PIECTRL.bit.ENPIE = 0;

    // Clear all PIEIER registers:
    PieCtrlRegs.PIEIER1.all = 0;
    PieCtrlRegs.PIEIER2.all = 0;
    PieCtrlRegs.PIEIER3.all = 0;    
    PieCtrlRegs.PIEIER4.all = 0;
    PieCtrlRegs.PIEIER5.all = 0;
    PieCtrlRegs.PIEIER6.all = 0;
    PieCtrlRegs.PIEIER7.all = 0;
    PieCtrlRegs.PIEIER8.all = 0;
    PieCtrlRegs.PIEIER9.all = 0;
    PieCtrlRegs.PIEIER10.all = 0;
    PieCtrlRegs.PIEIER11.all = 0;
    PieCtrlRegs.PIEIER12.all = 0;

    // Clear all PIEIFR registers:
    PieCtrlRegs.PIEIFR1.all = 0;
    PieCtrlRegs.PIEIFR2.all = 0;
    PieCtrlRegs.PIEIFR3.all = 0;    
    PieCtrlRegs.PIEIFR4.all = 0;
    PieCtrlRegs.PIEIFR5.all = 0;
    PieCtrlRegs.PIEIFR6.all = 0;
    PieCtrlRegs.PIEIFR7.all = 0;
    PieCtrlRegs.PIEIFR8.all = 0;
    PieCtrlRegs.PIEIFR9.all = 0;
    PieCtrlRegs.PIEIFR10.all = 0;
    PieCtrlRegs.PIEIFR11.all = 0;
    PieCtrlRegs.PIEIFR12.all = 0;
}    


void PieVectTableInit(void)
{
    int16    i;
    Uint32 *Source = (void *) &ISR_ILLEGAL;
    Uint32 *Dest = (void *) &PieVectTable;
        
    EALLOW;    
    for(i=0; i < 128; i++)
        *Dest++ = *Source;    
    EDIS;

    // Enable the PIE Vector Table
    PieCtrlRegs.PIECTRL.bit.ENPIE = 1;    
}

interrupt void ISR_ILLEGAL(void)   // Illegal operation TRAP
{
  // Insert ISR Code here

  // Next two lines for debug only to halt the processor here
  // Remove after inserting ISR Code
  asm("          ESTOP0");
  for(;;);

}

[/c]



this is the code I have used for the implementation, when I am setting an LED in the interrupt function high, it doesnt work.

Does anyone has any ideas.

Thx

 

Well it's been a while since I have worked on a TI chip... i have been in freescale and PIC land lately....

But, I see several 'global interrupt disable' commands and no enable commands! Actually, I don't even see any ISR where you are toggling a register to flash an LED!

Have you been able to flash an LED without interrupts yet?