TMS320F28055: SPINTAC-MOTION lost control when SCI interrupts happen

Yes, you can set ADC interrupts to highest priority in the PIE. Please investigate HAL_enableAdcInts() function - you'll see a few function calls that setup the ADC interrupt priority. If you follow ADC_IntNumber_1 to the corresponding enumeration definition, you'll see an enumeration for ADC_IntNumber_1HP. You can see on the PIE interrupt vector table (pg 134 of this doc: www.ti.com/.../spruhe5c.pdf) that the ADC can actually be set to the highest priority interrupt, which corresponds to the enumeration I mentioned. Change the variables passed to these functions as needed. Please also change the CPU interrupt number to the corresponding one for the high priority interrupt.

Sean

Hi Sean,

 I already tried to change the priority to ADCINT9  which is also in group 1 of PIE, but it didn't solve the problem of conflict.

Other than setting priority, what else can I do to avoid Rx Interrupts to stop my motor movements? 

I set up ADC priority to ADC_IntNumber_1HP as followings, but it motor won't be able to initialize. It is the same way I setup ADCINT9, and motor  works fine.But did not solve the conflict problem with SCI RX interrupts. So I am going to give a last try on this.

static inline void HAL_initIntVectorTable(HAL_Handle handle)
 {
  HAL_Obj *obj = (HAL_Obj *)handle;
  PIE_Obj *pie = (PIE_Obj *)obj->pieHandle;


  ENABLE_PROTECTED_REGISTER_WRITE_MODE;

  pie->ADCINT1_HP = &mainISR;
  pie->SCIRXINTA = &sciarxISR;

  DISABLE_PROTECTED_REGISTER_WRITE_MODE;

  return;
 } // end of HAL_initIntVectorTable() function

static inline void HAL_acqAdcInt(HAL_Handle handle,const ADC_IntNumber_e intNumber)
{
  HAL_Obj *obj = (HAL_Obj *)handle;


  // clear the ADC interrupt flag
  ADC_clearIntFlag(obj->adcHandle,intNumber);


  // Acknowledge interrupt from PIE group 10 
  PIE_clearInt(obj->pieHandle,PIE_GroupNumber_1);

  return;
} // end of HAL_acqAdcInt() function

void HAL_enableAdcInts(HAL_Handle handle)
{
  HAL_Obj *obj = (HAL_Obj *)handle;


  // enable the PIE interrupts associated with the ADC interrupts
  PIE_enableAdcInt(obj->pieHandle,ADC_IntNumber_1HP);


  // enable the ADC interrupts
  ADC_enableInt(obj->adcHandle,ADC_IntNumber_1HP);


  // enable the cpu interrupt for ADC interrupts
  CPU_enableInt(obj->cpuHandle,CPU_IntNumber_1);

  return;
} // end of HAL_enableAdcInts() function

  // acknowledge the ADC interrupt
  HAL_acqAdcInt(halHandle,ADC_IntNumber_1HP);

When I setup ADC_IntNumber_1HP, DO I need any extra steps?