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CCS/TMS320F28027: illegal isr

Part Number: TMS320F28027

Tool/software: Code Composer Studio

sir,

i want the input of ADC to be multiplied with sine wave instead of amplitude(i.e..,the ADC input has to vary the amplitude of sine wave with varying ADC input).when i am debugging the program i am getting illegal_isr. what is the remedy for this

PROGRAM:
#include "DSP28x_Project.h"     // Device Headerfile and Examples Include File
#include "math.h"
#include"Gpio.h"
// Prototype statements for functions found within this file.
void InitEPwm1Example(void);
void Adc_config(void);
__interrupt void epwm1_isr(void);
__interrupt void epwm2_isr(void);
__interrupt void epwm3_isr(void);
__interrupt void adc_isr(void);
unsigned int r,y,b,k1,k2,k3;
float ipcb1[300];
float ipcb2[300];
float ipcb3[300];
#define PRD        4000
#define PI             3.14159265358979323846
//extern Uint16 RamfuncsLoadStart;
//extern Uint16 RamfuncsLoadEnd;
//extern Uint16 RamfuncsRunStart;
float main(void)
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2806x_SysCtrl.c file.
   InitSysCtrl();
// Step 2. Initalize GPIO:
// This example function is found in the F2806x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();  // Skipped for this example
// For this case just init GPIO pins for ePWM1, ePWM2, ePWM3
// These functions are in the F2806x_EPwm.c file
   InitEPwm1Gpio();
   InitEPwm2Gpio();
   InitEPwm3Gpio();
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
   DINT;
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the F2806x_PieCtrl.c file.
   InitPieCtrl();
// Disable CPU interrupts and clear all CPU interrupt flags:
   IER = 0x0000;
   IFR = 0x0000;
   InitPieVectTable();
   InitFlash();
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
   EALLOW;  // This is needed to write to EALLOW protected registers
   PieVectTable.EPWM1_INT = &epwm1_isr;
   PieVectTable.EPWM2_INT = &epwm2_isr;
   PieVectTable.EPWM3_INT = &epwm3_isr;
   PieVectTable.ADCINT1   = &adc_isr;
   EDIS;    // This is needed to disable write to EALLOW protected registers
// Step 4. Initialize all the Device Peripherals:
// This function is found in F2806x_InitPeripherals.c
// InitPeripherals();  // Not required for this example
   EALLOW;
   SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;
   EDIS;
   InitEPwm1Example();
   InitAdc();
   AdcOffsetSelfCal();
   EALLOW;
   SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;
   EDIS;
// Enable  CPU INT3 which is connected to EPWM1-3 INT;
   IER |= M_INT3;
// Enable EPWM INTn in the PIE: Group 3 interrupt 1-3
   PieCtrlRegs.PIEIER3.bit.INTx1 = 1;
   PieCtrlRegs.PIEIER3.bit.INTx2 = 1;
   PieCtrlRegs.PIEIER3.bit.INTx3 = 1;
   PieCtrlRegs.PIEIER1.bit.INTx1 = 1;
   IER |= M_INT1;
// Enable global Interrupts and higher priority real-time debug events:
   EINT;   // Enable Global interrupt INTM
   ERTM;   // Enable Global realtime interrupt DBGM
// Step 6. IDLE loop. Just sit and loop forever (optional):
   for(;;)
   {
      __asm("          NOP");
   }
}
__interrupt void epwm1_isr(void)
{
   for(r=0;r<300;r++)
   {
ipcb1[r] = k1*sin(2*0.00333*PI*r);
   EPwm1Regs.CMPA.half.CMPA = ipcb1[r];
   if(((EPwm1Regs.TBCTR-(PRD/2))*2)>(ipcb1[r]))                     // Set actions
   {
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CAU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CAD = AQ_SET;
   }
   else
   {
   EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_SET;
   EPwm1Regs.AQCTLB.bit.CAU = AQ_SET;
   EPwm1Regs.AQCTLB.bit.CAD = AQ_CLEAR;
   }
   if (r==301){
   r=0;
   }
   }
   // Clear INT flag for this timer
   EPwm1Regs.ETCLR.bit.INT = 1;
   // Acknowledge this interrupt to receive more interrupts from group 3
   PieCtrlRegs.PIEACK.all = PIEACK_GROUP3;
}
__interrupt void epwm2_isr(void)
{
   for(y=0;y<300;y++)
   {
ipcb2[y] = k2*sin((2*0.00333*PI*y)+2.09439);
   EPwm2Regs.CMPA.half.CMPA = ipcb2[y];
   // Set actions
   if(((EPwm2Regs.TBCTR-(PRD/2))*2)>(ipcb2[y]))
   {
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;             // Set PWM2A on CAU
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;           // Clear PWM2A on CAD
   EPwm2Regs.AQCTLB.bit.CAU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CAD = AQ_SET;
   }
   else
   {
   EPwm2Regs.AQCTLA.bit.CAU = AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_SET;
   EPwm2Regs.AQCTLB.bit.CAU = AQ_SET;
   EPwm2Regs.AQCTLB.bit.CAD = AQ_CLEAR;
   }
   if (y==301){
      y=0;
      }
   }
   // Clear INT flag for this timer
   EPwm2Regs.ETCLR.bit.INT = 1;
   // Acknowledge this interrupt to receive more interrupts from group 3
   PieCtrlRegs.PIEACK.all = PIEACK_GROUP3;
}
__interrupt void epwm3_isr(void)
{
for(b=0;b<300;b++)
   {
ipcb3[b] = k3*sin((2*PI*0.00333*b)-2.09439) ;
   EPwm3Regs.CMPA.half.CMPA = ipcb3[b];
   if(((EPwm3Regs.TBCTR-(PRD/2))*2)>(ipcb3[b]))                     // Set actions
   {
   EPwm3Regs.AQCTLA.bit.CAU = AQ_SET;
   EPwm3Regs.AQCTLA.bit.CAD = AQ_CLEAR;
   EPwm3Regs.AQCTLB.bit.CAU = AQ_CLEAR;
   EPwm3Regs.AQCTLB.bit.CAD = AQ_SET;
   }
   else
   {
   EPwm3Regs.AQCTLA.bit.CAU = AQ_CLEAR;
   EPwm3Regs.AQCTLA.bit.CAD = AQ_SET;
   EPwm3Regs.AQCTLB.bit.CAU = AQ_SET;
   EPwm3Regs.AQCTLB.bit.CAD = AQ_CLEAR;
   }
   if (b==301){
   b=0;
   }
   // Clear INT flag for this timer
   EPwm3Regs.ETCLR.bit.INT = 1;
   // Acknowledge this interrupt to receive more interrupts from group 3
   PieCtrlRegs.PIEACK.all = PIEACK_GROUP3;
}
}
void InitEPwm1Example(void)
{
EALLOW;
GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1; // GPIO ³õʼ»¯ÎªepwmÊä³ö
GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1;
GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1;
GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1;
GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 1;
GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 1;
   EDIS;
   EPwm1Regs.TBPRD = PRD;                        // Set timer period
   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE;        // Disable phase loading
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;    // Load registers every ZERO
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;
   // Active Low PWMs - Setup Deadband
   EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
   EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
   EPwm1Regs.DBCTL.bit.IN_MODE = DBA_ALL;
   EPwm1Regs.DBRED = 270;
   EPwm1Regs.DBFED = 270;
   // Interrupt where we will change the Deadband
   EPwm1Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO;     // Select INT on Zero event
   EPwm1Regs.ETSEL.bit.INTEN = 1;                // Enable INT
   EPwm1Regs.ETPS.bit.INTPRD = ET_3RD;           // Generate INT on 3rd event
   EPwm2Regs.TBPRD = PRD;                        // Set timer period
   EPwm2Regs.TBPHS.half.TBPHS = 0x0535;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE;        // Disable phase loading
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;          // Slow just to observe on the scope
   // Active Low complementary PWMs - setup the deadband
   EPwm2Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
   EPwm2Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
   EPwm2Regs.DBCTL.bit.IN_MODE = DBA_ALL;
   EPwm2Regs.DBRED = 270;
   EPwm2Regs.DBFED = 270;
   // Interrupt where we will modify the deadband
   EPwm2Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO;      // Select INT on Zero event
   EPwm2Regs.ETSEL.bit.INTEN = 1;                 // Enable INT
   EPwm2Regs.ETPS.bit.INTPRD = ET_3RD;            // Generate INT on 3rd event
   EPwm3Regs.TBPRD = PRD;                         // Set timer period
   EPwm3Regs.TBPHS.half.TBPHS = 0xA6A;            // Phase is 0
   EPwm3Regs.TBCTR = 0x0000;                      // Clear counter
   EPwm3Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm3Regs.TBCTL.bit.PHSEN = TB_ENABLE;        // Disable phase loading
   EPwm3Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm3Regs.TBCTL.bit.CLKDIV = TB_DIV1;          // Slow so we can observe on the scope
   // Active high complementary PWMs - Setup the deadband
   EPwm3Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
   EPwm3Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
   EPwm3Regs.DBCTL.bit.IN_MODE = DBA_ALL;
   EPwm3Regs.DBRED = 270;
   EPwm3Regs.DBFED = 270;
   // Interrupt where we will change the deadband
   EPwm3Regs.ETSEL.bit.INTSEL = ET_CTR_ZERO;       // Select INT on Zero event
   EPwm3Regs.ETSEL.bit.INTEN = 1;                  // Enable INT
   EPwm3Regs.ETPS.bit.INTPRD = ET_3RD;             // Generate INT on 3rd event
   EALLOW;
      AdcRegs.ADCCTL1.bit.INTPULSEPOS = 1; //ADCINT1 trips after AdcResults latch
      AdcRegs.INTSEL1N2.bit.INT1E     = 1;     //Enabled ADCINT1
      AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;     //Disable ADCINT1 Continuous mode
      AdcRegs.INTSEL1N2.bit.INT1SEL = 2; //setup EOC2 to trigger ADCINT1 to fire
      AdcRegs.ADCSOC1CTL.bit.CHSEL = 4; //set SOC0 channel select to ADCINA4
      AdcRegs.ADCSOC2CTL.bit.CHSEL = 4; //set SOC1 channel select to ADCINA4
      AdcRegs.ADCSOC3CTL.bit.CHSEL = 2; //set SOC1 channel select to ADCINA2
      AdcRegs.ADCSOC1CTL.bit.TRIGSEL = 5; //set SOC0 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1
      AdcRegs.ADCSOC2CTL.bit.TRIGSEL = 5; //set SOC1 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1
      AdcRegs.ADCSOC3CTL.bit.TRIGSEL = 5; //set SOC2 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1, then SOC2
      AdcRegs.ADCSOC1CTL.bit.ACQPS = 6; //set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
      AdcRegs.ADCSOC2CTL.bit.ACQPS = 6; //set SOC1 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
      AdcRegs.ADCSOC3CTL.bit.ACQPS = 6; //set SOC2 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
      EDIS;
      EPwm1Regs.ETSEL.bit.SOCAEN = 1;
      EPwm1Regs.ETSEL.bit.SOCASEL = 4;
      EPwm1Regs.ETPS.bit.SOCAPRD = 1;
}
__interrupt void adc_isr(void)
{
k1 = AdcResult.ADCRESULT1;
k2 = AdcResult.ADCRESULT2;
k3 = AdcResult.ADCRESULT3;
    AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1; //Clear ADCINT1 flag reinitialize for next SOC
    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;   // Acknowledge interrupt to PIE
}
//===========================================================================
// No more.
//===========================================================================