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InstaSpin FOC TMSF28027F moved PWM pins and ADC pins

Other Parts Discussed in Thread: TMS320F28027F

I am using the InstaSpin FOC with the TMS320F28027F processor. I needed to move the PWMs from PWM1,2,3 to PWM2,3,4 for my design to drive a 130 volt motor. I also move some of the ADC channels around. Attached are my hal.c and hal.h files with my changes to setup the PWMs and the ADC. I started with the Lab7 code when I was using the HVKit from TI. The software ran fine. I then moved to my board where the only thing that changes is the PWM and ADC pins used. When I run the unchanged Lab7 cod on the TI HVKit with no motor attached I get the expected sinewave signals on the Voltage feedback pins. However, on my board when running my modified code, I only get a 15kHz PWM signals with no sinewave generated. It looks like it is just a fixed PWM frequency.

 

My main question is if I move the PWM pins from PWM1,2,3 to PWM2,3,4 are there any other functions that need to be changed. If you search on the word ForeverFlo in the hal.c and hal.h file, you will see all my modifications. I have verified that I am getting the interrupt and the ADC channels are getting converted. I was able to verify the ADC by looking at the gAdcData in debug mode. It seems the PWMs are setup OK, but not getting updated properly.

0358.hal.c
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//! \file   solutions/instaspin_foc/boards/hvkit_rev1p1/f28x/f2802xF/src/hal.c
//! \brief Contains the various functions related to the HAL object (everything outside the CTRL system) 
//!
//! (C) Copyright 2011, Texas Instruments, Inc.


// **************************************************************************
// the includes

// drivers

// modules

// platforms
#include "hal.h"
#include "user.h"
#include "hal_obj.h"

#ifdef FLASH
#pragma CODE_SECTION(HAL_setupFlash,"ramfuncs");
#endif

// **************************************************************************
// the defines


// **************************************************************************
// the globals

HAL_Obj hal;


// **************************************************************************
// the functions

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


  // enable the ADC clock
  CLK_enableAdcClock(obj->clkHandle);


  // Run the Device_cal() function
  // This function copies the ADC and oscillator calibration values from TI reserved
  // OTP into the appropriate trim registers
  // This boot ROM automatically calls this function to calibrate the interal 
  // oscillators and ADC with device specific calibration data.
  // If the boot ROM is bypassed by Code Composer Studio during the development process,
  // then the calibration must be initialized by the application
  ENABLE_PROTECTED_REGISTER_WRITE_MODE;
  (*Device_cal)();
  DISABLE_PROTECTED_REGISTER_WRITE_MODE;

  // run offsets calibration in user's memory
  HAL_AdcOffsetSelfCal(handle);

  // run oscillator compensation
  HAL_OscTempComp(handle);

  // disable the ADC clock
  CLK_disableAdcClock(obj->clkHandle);

  return;
} // end of HAL_cal() function


void HAL_OscTempComp(HAL_Handle handle)
{
  HAL_Obj *obj = (HAL_Obj *)handle;
  uint16_t Temperature;

  // disable the ADCs
  ADC_disable(obj->adcHandle);

  // power up the bandgap circuit
  ADC_enableBandGap(obj->adcHandle);

  // set the ADC voltage reference source to internal
  ADC_setVoltRefSrc(obj->adcHandle,ADC_VoltageRefSrc_Int);

  // enable the ADC reference buffers
  ADC_enableRefBuffers(obj->adcHandle);

  // Set main clock scaling factor (max45MHz clock for the ADC module)
  ADC_setDivideSelect(obj->adcHandle,ADC_DivideSelect_ClkIn_by_2);

  // power up the ADCs
  ADC_powerUp(obj->adcHandle);

  // enable the ADCs
  ADC_enable(obj->adcHandle);

  // enable non-overlap mode
  ADC_enableNoOverlapMode(obj->adcHandle);

  // connect channel A5 internally to the temperature sensor
  ADC_setTempSensorSrc(obj->adcHandle, ADC_TempSensorSrc_Int);

  // set SOC0 channel select to ADCINA5
  ADC_setSocChanNumber(obj->adcHandle, ADC_SocNumber_0, ADC_SocChanNumber_A5);

  // set SOC0 acquisition period to 26 ADCCLK
  ADC_setSocSampleDelay(obj->adcHandle, ADC_SocNumber_0, ADC_SocSampleDelay_64_cycles);

  // connect ADCINT1 to EOC0
  ADC_setIntSrc(obj->adcHandle, ADC_IntNumber_1, ADC_IntSrc_EOC0);

  // clear ADCINT1 flag
  ADC_clearIntFlag(obj->adcHandle, ADC_IntNumber_1);

  // enable ADCINT1
  ADC_enableInt(obj->adcHandle, ADC_IntNumber_1);

  // force start of conversion on SOC0
  ADC_setSocFrc(obj->adcHandle, ADC_SocFrc_0);

  // wait for end of conversion
  while (ADC_getIntFlag(obj->adcHandle, ADC_IntNumber_1) == 0){}

  // clear ADCINT1 flag
  ADC_clearIntFlag(obj->adcHandle, ADC_IntNumber_1);

  Temperature = ADC_readResult(obj->adcHandle, ADC_ResultNumber_0);

  HAL_osc1Comp(handle, Temperature);

  HAL_osc2Comp(handle, Temperature);

  return;
} // end of HAL_OscTempComp() function


void HAL_osc1Comp(HAL_Handle handle, const int16_t sensorSample)
{
	int16_t compOscFineTrim;
	HAL_Obj *obj = (HAL_Obj *)handle;

	ENABLE_PROTECTED_REGISTER_WRITE_MODE;

    compOscFineTrim = ((sensorSample - getRefTempOffset())*(int32_t)getOsc1FineTrimSlope()
                      + OSC_POSTRIM_OFF + FP_ROUND )/FP_SCALE + getOsc1FineTrimOffset() - OSC_POSTRIM;

    if(compOscFineTrim > 31)
      {
        compOscFineTrim = 31;
      }
	else if(compOscFineTrim < -31)
      {
        compOscFineTrim = -31;
      }

    OSC_setTrim(obj->oscHandle, OSC_Number_1, HAL_getOscTrimValue(getOsc1CoarseTrim(), compOscFineTrim));

    DISABLE_PROTECTED_REGISTER_WRITE_MODE;

    return;
} // end of HAL_osc1Comp() function


void HAL_osc2Comp(HAL_Handle handle, const int16_t sensorSample)
{
	int16_t compOscFineTrim;
	HAL_Obj *obj = (HAL_Obj *)handle;

	ENABLE_PROTECTED_REGISTER_WRITE_MODE;

    compOscFineTrim = ((sensorSample - getRefTempOffset())*(int32_t)getOsc2FineTrimSlope()
                      + OSC_POSTRIM_OFF + FP_ROUND )/FP_SCALE + getOsc2FineTrimOffset() - OSC_POSTRIM;

    if(compOscFineTrim > 31)
      {
        compOscFineTrim = 31;
      }
	else if(compOscFineTrim < -31)
      {
        compOscFineTrim = -31;
      }

    OSC_setTrim(obj->oscHandle, OSC_Number_2, HAL_getOscTrimValue(getOsc2CoarseTrim(), compOscFineTrim));

    DISABLE_PROTECTED_REGISTER_WRITE_MODE;

    return;
} // end of HAL_osc2Comp() function


uint16_t HAL_getOscTrimValue(int16_t coarse, int16_t fine)
{
  uint16_t regValue = 0;

  if(fine < 0)
    {
      regValue = ((-fine) | 0x20) << 9;
    }
  else
    {
      regValue = fine << 9;
    }

  if(coarse < 0)
    {
      regValue |= ((-coarse) | 0x80);
    }
  else
    {
      regValue |= coarse;
    }

  return regValue;
} // end of HAL_getOscTrimValue() function


void HAL_AdcOffsetSelfCal(HAL_Handle handle)
{
  HAL_Obj *obj = (HAL_Obj *)handle;
  uint16_t AdcConvMean;

  // disable the ADCs
  ADC_disable(obj->adcHandle);

  // power up the bandgap circuit
  ADC_enableBandGap(obj->adcHandle);

  // set the ADC voltage reference source to internal
  ADC_setVoltRefSrc(obj->adcHandle,ADC_VoltageRefSrc_Int);

  // enable the ADC reference buffers
  ADC_enableRefBuffers(obj->adcHandle);

  // power up the ADCs
  ADC_powerUp(obj->adcHandle);

  // enable the ADCs
  ADC_enable(obj->adcHandle);

  //Select VREFLO internal connection on B5
  ADC_enableVoltRefLoConv(obj->adcHandle);

  //Select channel B5 for all SOC
  HAL_AdcCalChanSelect(handle, ADC_SocChanNumber_B5);

  //Apply artificial offset (+80) to account for a negative offset that may reside in the ADC core
  ADC_setOffTrim(obj->adcHandle, 80);

  //Capture ADC conversion on VREFLO
  AdcConvMean = HAL_AdcCalConversion(handle);

  //Set offtrim register with new value (i.e remove artical offset (+80) and create a two's compliment of the offset error)
  ADC_setOffTrim(obj->adcHandle, 80 - AdcConvMean);

  //Select external ADCIN5 input pin on B5
  ADC_disableVoltRefLoConv(obj->adcHandle);

  return;
} // end of HAL_AdcOffsetSelfCal() function


void HAL_AdcCalChanSelect(HAL_Handle handle, const ADC_SocChanNumber_e chanNumber)
{
  HAL_Obj *obj = (HAL_Obj *)handle;

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_0,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_1,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_2,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_3,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_4,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_5,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_6,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_7,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_8,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_9,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_10,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_11,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_12,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_13,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_14,chanNumber);
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_15,chanNumber);

  return;
} // end of HAL_AdcCalChanSelect() function


uint16_t HAL_AdcCalConversion(HAL_Handle handle)
{
  HAL_Obj *obj = (HAL_Obj *)handle;
  uint16_t index, SampleSize, Mean;
  uint32_t Sum;
  ADC_SocSampleDelay_e ACQPS_Value;

  index       = 0;     //initialize index to 0
  SampleSize  = 256;   //set sample size to 256 (**NOTE: Sample size must be multiples of 2^x where is an integer >= 4)
  Sum         = 0;     //set sum to 0
  Mean        = 999;   //initialize mean to known value

  //Set the ADC sample window to the desired value (Sample window = ACQPS + 1)
  ACQPS_Value = ADC_SocSampleDelay_7_cycles;

  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_0,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_1,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_2,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_3,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_4,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_5,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_6,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_7,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_8,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_9,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_10,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_11,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_12,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_13,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_14,ACQPS_Value);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_15,ACQPS_Value);

  // Enabled ADCINT1 and ADCINT2
  ADC_enableInt(obj->adcHandle, ADC_IntNumber_1);
  ADC_enableInt(obj->adcHandle, ADC_IntNumber_2);

  // Disable continuous sampling for ADCINT1 and ADCINT2
  ADC_setIntMode(obj->adcHandle, ADC_IntNumber_1, ADC_IntMode_EOC);
  ADC_setIntMode(obj->adcHandle, ADC_IntNumber_2, ADC_IntMode_EOC);

  //ADCINTs trigger at end of conversion
  ADC_setIntPulseGenMode(obj->adcHandle, ADC_IntPulseGenMode_Prior);

  // Setup ADCINT1 and ADCINT2 trigger source
  ADC_setIntSrc(obj->adcHandle, ADC_IntNumber_1, ADC_IntSrc_EOC6);
  ADC_setIntSrc(obj->adcHandle, ADC_IntNumber_2, ADC_IntSrc_EOC14);

  // Setup each SOC's ADCINT trigger source
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_0, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_1, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_2, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_3, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_4, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_5, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_6, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_7, ADC_Int2TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_8, ADC_Int1TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_9, ADC_Int1TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_10, ADC_Int1TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_11, ADC_Int1TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_12, ADC_Int1TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_13, ADC_Int1TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_14, ADC_Int1TriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_15, ADC_Int1TriggersSOC);

  // Delay before converting ADC channels
  usDelay(ADC_DELAY_usec);

  ADC_setSocFrcWord(obj->adcHandle, 0x00FF);

  while( index < SampleSize )
    {
      //Wait for ADCINT1 to trigger, then add ADCRESULT0-7 registers to sum
      while (ADC_getIntFlag(obj->adcHandle, ADC_IntNumber_1) == 0){}

      //Must clear ADCINT1 flag since INT1CONT = 0
      ADC_clearIntFlag(obj->adcHandle, ADC_IntNumber_1);

      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_0);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_1);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_2);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_3);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_4);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_5);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_6);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_7);

      //Wait for ADCINT2 to trigger, then add ADCRESULT8-15 registers to sum
      while (ADC_getIntFlag(obj->adcHandle, ADC_IntNumber_2) == 0){}

      //Must clear ADCINT2 flag since INT2CONT = 0
      ADC_clearIntFlag(obj->adcHandle, ADC_IntNumber_2);

      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_8);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_9);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_10);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_11);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_12);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_13);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_14);
      Sum += ADC_readResult(obj->adcHandle, ADC_ResultNumber_15);

      index+=16;

  } // end data collection

  //Disable ADCINT1 and ADCINT2 to STOP the ping-pong sampling
  ADC_disableInt(obj->adcHandle, ADC_IntNumber_1);
  ADC_disableInt(obj->adcHandle, ADC_IntNumber_2);

  //Calculate average ADC sample value
  Mean = Sum / SampleSize;

  // Clear start of conversion trigger
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_0, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_1, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_2, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_3, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_4, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_5, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_6, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_7, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_8, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_9, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_10, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_11, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_12, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_13, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_14, ADC_NoIntTriggersSOC);
  ADC_setupSocTrigSrc(obj->adcHandle, ADC_SocNumber_15, ADC_NoIntTriggersSOC);

  //return the average
  return(Mean);
} // end of HAL_AdcCalConversion() function


void HAL_disableWdog(HAL_Handle halHandle)
{
  HAL_Obj *hal = (HAL_Obj *)halHandle;


  WDOG_disable(hal->wdogHandle);


  return;
} // end of HAL_disableWdog() function


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


  CPU_disableGlobalInts(obj->cpuHandle);

  return;
} // end of HAL_disableGlobalInts() 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_1);


  // enable the ADC interrupts
  ADC_enableInt(obj->adcHandle,ADC_IntNumber_1);


  // enable the cpu interrupt for ADC interrupts
  CPU_enableInt(obj->cpuHandle,CPU_IntNumber_10);

  return;
} // end of HAL_enableAdcInts() function


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


  CPU_enableDebugInt(obj->cpuHandle);

  return;
} // end of HAL_enableDebugInt() function


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


  CPU_enableGlobalInts(obj->cpuHandle);

  return;
} // end of HAL_enableGlobalInts() function


//Mosdified March 6 2015 by Gary for ForeverFlo Rev 0
void HAL_enablePwmInt(HAL_Handle handle)
{
  HAL_Obj *obj = (HAL_Obj *)handle;


  PIE_enablePwmInt(obj->pieHandle,PWM_Number_2);


  // enable the interrupt
  PWM_enableInt(obj->pwmHandle[PWM_Number_2]);


  // enable the cpu interrupt for EPWM2_INT
  CPU_enableInt(obj->cpuHandle,CPU_IntNumber_3);

  return;
} // end of HAL_enablePwmInt() function


void HAL_setupFaults(HAL_Handle handle)
{
  HAL_Obj *obj = (HAL_Obj *)handle;
  uint_least8_t cnt;


  // Configure Trip Mechanism for the Motor control software
  // -Cycle by cycle trip on CPU halt
  // -One shot fault trip zone
  // These trips need to be repeated for EPWM2 ,3 & 4 (cnt Modified for ForeverFlo)
  for(cnt=1;cnt<4;cnt++)
    {
      PWM_enableTripZoneSrc(obj->pwmHandle[cnt],PWM_TripZoneSrc_CycleByCycle_TZ6_NOT);

      PWM_enableTripZoneSrc(obj->pwmHandle[cnt],PWM_TripZoneSrc_OneShot_TZ1_NOT);

      // What do we want the OST/CBC events to do?
      // TZA events can force EPWMxA
      // TZB events can force EPWMxB

      PWM_setTripZoneState_TZA(obj->pwmHandle[cnt],PWM_TripZoneState_EPWM_Low);
      PWM_setTripZoneState_TZB(obj->pwmHandle[cnt],PWM_TripZoneState_EPWM_Low);
    }

  return;
} // end of HAL_setupFaults() function


HAL_Handle HAL_init(void *pMemory,const size_t numBytes)
{
  uint_least8_t cnt;
  HAL_Handle handle;
  HAL_Obj *obj;


  if(numBytes < sizeof(HAL_Obj))
    return((HAL_Handle)NULL);


  // assign the handle
  handle = (HAL_Handle)pMemory;


  // assign the object
  obj = (HAL_Obj *)handle;


  // initialize the watchdog driver
  obj->wdogHandle = WDOG_init((void *)WDOG_BASE_ADDR,sizeof(WDOG_Obj));


  // disable watchdog
  HAL_disableWdog(handle);


  // initialize the ADC
  obj->adcHandle = ADC_init((void *)ADC_BASE_ADDR,sizeof(ADC_Obj));

  // initialize the SCI
  obj->sciHandle = SCI_init((void *)SCIA_BASE_ADDR,sizeof(SCI_Obj));


  // initialize the clock handle
  obj->clkHandle = CLK_init((void *)CLK_BASE_ADDR,sizeof(CLK_Obj));


  // initialize the CPU handle
  obj->cpuHandle = CPU_init(&cpu,sizeof(cpu));


  // initialize the FLASH handle
  obj->flashHandle = FLASH_init((void *)FLASH_BASE_ADDR,sizeof(FLASH_Obj));


  // initialize the GPIO handle
  obj->gpioHandle = GPIO_init((void *)GPIO_BASE_ADDR,sizeof(GPIO_Obj));


  // initialize the current offset estimator handles
  for(cnt=0;cnt<USER_NUM_CURRENT_SENSORS;cnt++)
    {
      obj->offsetHandle_I[cnt] = OFFSET_init(&obj->offset_I[cnt],sizeof(obj->offset_I[cnt]));
    }


  // initialize the voltage offset estimator handles
  for(cnt=0;cnt<USER_NUM_VOLTAGE_SENSORS;cnt++)
    {
      obj->offsetHandle_V[cnt] = OFFSET_init(&obj->offset_V[cnt],sizeof(obj->offset_V[cnt]));
    }


  // initialize the oscillator handle
  obj->oscHandle = OSC_init((void *)OSC_BASE_ADDR,sizeof(OSC_Obj));


  // initialize the PIE handle
  obj->pieHandle = PIE_init((void *)PIE_BASE_ADDR,sizeof(PIE_Obj));


  // initialize the PLL handle
  obj->pllHandle = PLL_init((void *)PLL_BASE_ADDR,sizeof(PLL_Obj));


  // initialize PWM handle
  // Modified March 6 2015 by Gary for ForeverFlo Rev 0
  obj->pwmHandle[0] = PWM_init((void *)PWM_ePWM1_BASE_ADDR,sizeof(PWM_Obj));
  obj->pwmHandle[1] = PWM_init((void *)PWM_ePWM2_BASE_ADDR,sizeof(PWM_Obj));
  obj->pwmHandle[2] = PWM_init((void *)PWM_ePWM3_BASE_ADDR,sizeof(PWM_Obj));
  obj->pwmHandle[3] = PWM_init((void *)PWM_ePWM4_BASE_ADDR,sizeof(PWM_Obj));

  // initialize power handle
  obj->pwrHandle = PWR_init((void *)PWR_BASE_ADDR,sizeof(PWR_Obj));


  // initialize timer drivers
  obj->timerHandle[0] = TIMER_init((void *)TIMER0_BASE_ADDR,sizeof(TIMER_Obj));
  obj->timerHandle[1] = TIMER_init((void *)TIMER1_BASE_ADDR,sizeof(TIMER_Obj));
  obj->timerHandle[2] = TIMER_init((void *)TIMER2_BASE_ADDR,sizeof(TIMER_Obj));


  return(handle);
} // end of HAL_init() function


void HAL_setParams(HAL_Handle handle,const USER_Params *pUserParams)
{
  uint_least8_t cnt;
  HAL_Obj *obj = (HAL_Obj *)handle;
  _iq beta_lp_pu = _IQ(pUserParams->offsetPole_rps/(float_t)pUserParams->ctrlFreq_Hz);


  HAL_setNumCurrentSensors(handle,pUserParams->numCurrentSensors);
  HAL_setNumVoltageSensors(handle,pUserParams->numVoltageSensors);


  for(cnt=0;cnt<HAL_getNumCurrentSensors(handle);cnt++)
    {
      HAL_setOffsetBeta_lp_pu(handle,HAL_SensorType_Current,cnt,beta_lp_pu);
      HAL_setOffsetInitCond(handle,HAL_SensorType_Current,cnt,_IQ(0.0));
      HAL_setOffsetValue(handle,HAL_SensorType_Current,cnt,_IQ(0.0));
    }


  for(cnt=0;cnt<HAL_getNumVoltageSensors(handle);cnt++)
    {
      HAL_setOffsetBeta_lp_pu(handle,HAL_SensorType_Voltage,cnt,beta_lp_pu);
      HAL_setOffsetInitCond(handle,HAL_SensorType_Voltage,cnt,_IQ(0.0));
      HAL_setOffsetValue(handle,HAL_SensorType_Voltage,cnt,_IQ(0.0));
    }


  // disable global interrupts
  CPU_disableGlobalInts(obj->cpuHandle);


  // disable cpu interrupts
  CPU_disableInts(obj->cpuHandle);


  // clear cpu interrupt flags
  CPU_clearIntFlags(obj->cpuHandle);


  // setup the clocks
  HAL_setupClks(handle);


  // Setup the PLL
  HAL_setupPll(handle,PLL_ClkFreq_60_MHz);


  // setup the PIE
  HAL_setupPie(handle);


  // run the device calibration
  HAL_cal(handle);


  // setup the peripheral clocks
  HAL_setupPeripheralClks(handle);


  // setup the GPIOs
  HAL_setupGpios(handle);


  // setup the flash
  HAL_setupFlash(handle);


  // setup the ADCs
  HAL_setupAdcs(handle);


  // setup the PWMs
  HAL_setupPwms(handle,
                pUserParams->systemFreq_MHz,
                pUserParams->pwmPeriod_usec,
                USER_NUM_PWM_TICKS_PER_ISR_TICK);


  // setup the timers
  HAL_setupTimers(handle,
                  pUserParams->systemFreq_MHz);


  // set the default current bias
 {
   uint_least8_t cnt;
   _iq bias = _IQ12mpy(ADC_dataBias,_IQ(pUserParams->current_sf));
   
   for(cnt=0;cnt<HAL_getNumCurrentSensors(handle);cnt++)
     {
       HAL_setBias(handle,HAL_SensorType_Current,cnt,bias);
     }
 }


  //  set the current scale factor
 {
   _iq current_sf = _IQ(pUserParams->current_sf);

  HAL_setCurrentScaleFactor(handle,current_sf);
 }


  // set the default voltage bias
 {
   uint_least8_t cnt;
   _iq bias = _IQ(0.0);
   
   for(cnt=0;cnt<HAL_getNumVoltageSensors(handle);cnt++)
     {
       HAL_setBias(handle,HAL_SensorType_Voltage,cnt,bias);
     }
 }


  //  set the voltage scale factor
 {
   _iq voltage_sf = _IQ(pUserParams->voltage_sf);

  HAL_setVoltageScaleFactor(handle,voltage_sf);
 }

 return;
} // end of HAL_setParams() function


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


  // disable the ADCs
  ADC_disable(obj->adcHandle);


  // power up the bandgap circuit
  ADC_enableBandGap(obj->adcHandle);


  // set the ADC voltage reference source to internal 
  ADC_setVoltRefSrc(obj->adcHandle,ADC_VoltageRefSrc_Int);


  // enable the ADC reference buffers
  ADC_enableRefBuffers(obj->adcHandle);


  // power up the ADCs
  ADC_powerUp(obj->adcHandle);


  // enable the ADCs
  ADC_enable(obj->adcHandle);


  // set the ADC interrupt pulse generation to prior
  ADC_setIntPulseGenMode(obj->adcHandle,ADC_IntPulseGenMode_Prior);


  // set the temperature sensor source to external
  ADC_setTempSensorSrc(obj->adcHandle,ADC_TempSensorSrc_Ext);


  // configure the interrupt sources
  ADC_disableInt(obj->adcHandle,ADC_IntNumber_1);
  ADC_setIntMode(obj->adcHandle,ADC_IntNumber_1,ADC_IntMode_ClearFlag);
  ADC_setIntSrc(obj->adcHandle,ADC_IntNumber_1,ADC_IntSrc_EOC7);


  //configure the SOCs for ForeverFlo
  // sample the first sample twice due to errata sprz342f
  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_0,ADC_SocChanNumber_A3);//Dummy Read
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_0,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_0,ADC_SocSampleDelay_7_cycles);

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_1,ADC_SocChanNumber_A3);//IFB_U
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_1,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_1,ADC_SocSampleDelay_7_cycles);

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_2,ADC_SocChanNumber_A7);//IFB_V
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_2,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_2,ADC_SocSampleDelay_7_cycles);

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_3,ADC_SocChanNumber_A4);//IFB_W
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_3,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_3,ADC_SocSampleDelay_7_cycles);

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_4,ADC_SocChanNumber_B4);//VFB_U
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_4,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_4,ADC_SocSampleDelay_7_cycles);

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_5,ADC_SocChanNumber_B3);//VFB_V
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_5,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_5,ADC_SocSampleDelay_7_cycles);

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_6,ADC_SocChanNumber_B2);//VFB_W
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_6,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_6,ADC_SocSampleDelay_7_cycles);

  ADC_setSocChanNumber(obj->adcHandle,ADC_SocNumber_7,ADC_SocChanNumber_A0);//VFB_BUS
  ADC_setSocTrigSrc(obj->adcHandle,ADC_SocNumber_7,ADC_SocTrigSrc_EPWM2_ADCSOCA);
  ADC_setSocSampleDelay(obj->adcHandle,ADC_SocNumber_7,ADC_SocSampleDelay_7_cycles);

  return;
} // end of HAL_setupAdcs() function


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


  // enable internal oscillator 1
  CLK_enableOsc1(obj->clkHandle);

  // set the oscillator source
  CLK_setOscSrc(obj->clkHandle,CLK_OscSrc_Internal);

  // disable the external clock in
  CLK_disableClkIn(obj->clkHandle);

  // disable the crystal oscillator
  CLK_disableCrystalOsc(obj->clkHandle);

  // disable oscillator 2
  CLK_disableOsc2(obj->clkHandle);

  // set the low speed clock prescaler
  CLK_setLowSpdPreScaler(obj->clkHandle,CLK_LowSpdPreScaler_SysClkOut_by_4);

  // set the clock out prescaler
  CLK_setClkOutPreScaler(obj->clkHandle,CLK_ClkOutPreScaler_SysClkOut_by_1);

  return;
} // end of HAL_setupClks() function


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


  FLASH_enablePipelineMode(obj->flashHandle);

  FLASH_setNumPagedReadWaitStates(obj->flashHandle,FLASH_NumPagedWaitStates_2);

  FLASH_setNumRandomReadWaitStates(obj->flashHandle,FLASH_NumRandomWaitStates_2);

  FLASH_setOtpWaitStates(obj->flashHandle,FLASH_NumOtpWaitStates_3);

  FLASH_setStandbyWaitCount(obj->flashHandle,FLASH_STANDBY_WAIT_COUNT_DEFAULT);

  FLASH_setActiveWaitCount(obj->flashHandle,FLASH_ACTIVE_WAIT_COUNT_DEFAULT);

  return;
} // HAL_setupFlash() function


//Modified March 6 2015 by Gary for ForeverFlo Rev 0 board
void HAL_setupGpios(HAL_Handle handle)
{
  HAL_Obj *obj = (HAL_Obj *)handle;


  // O2 Sensor Drive PWM1
  GPIO_setMode(obj->gpioHandle,GPIO_Number_0,GPIO_0_Mode_EPWM1A);

  // Fan Speed Control
  GPIO_setMode(obj->gpioHandle,GPIO_Number_1,GPIO_16_Mode_GeneralPurpose);
  GPIO_setLow(obj->gpioHandle,GPIO_Number_1);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_1,GPIO_Direction_Output);

  // PWM2A_UH
  GPIO_setMode(obj->gpioHandle,GPIO_Number_2,GPIO_2_Mode_EPWM2A);

  // PWM2B_UL
  GPIO_setMode(obj->gpioHandle,GPIO_Number_3,GPIO_3_Mode_EPWM2B);

  // PWM3A_VH
  GPIO_setMode(obj->gpioHandle,GPIO_Number_4,GPIO_4_Mode_EPWM3A);

  // PWM3B_VL
  GPIO_setMode(obj->gpioHandle,GPIO_Number_5,GPIO_5_Mode_EPWM3B);

  // PWM4A_WH
  GPIO_setMode(obj->gpioHandle,GPIO_Number_6,GPIO_6_Mode_EPWM4A);

  // PWM4B_WL
  GPIO_setMode(obj->gpioHandle,GPIO_Number_7,GPIO_7_Mode_EPWM4B);

  // TZ-1//GPIO_12_Mode_TZ1_NOT
  GPIO_setMode(obj->gpioHandle,GPIO_Number_12,GPIO_12_Mode_GeneralPurpose);

  // Not Used
  GPIO_setMode(obj->gpioHandle,GPIO_Number_16,GPIO_16_Mode_GeneralPurpose);
  GPIO_setPullUp(obj->gpioHandle, GPIO_Number_16, GPIO_PullUp_Disable);
  GPIO_setLow(obj->gpioHandle,GPIO_Number_16);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_16,GPIO_Direction_Output);

  // FAN_TACH input
  GPIO_setMode(obj->gpioHandle,GPIO_Number_17,GPIO_17_Mode_GeneralPurpose);
  GPIO_setPullUp(obj->gpioHandle, GPIO_Number_17, GPIO_PullUp_Enable);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_17,GPIO_Direction_Input);

  // SOLCON (Balance Valve)
  GPIO_setMode(obj->gpioHandle,GPIO_Number_18,GPIO_18_Mode_GeneralPurpose);
  GPIO_setPullUp(obj->gpioHandle, GPIO_Number_18, GPIO_PullUp_Disable);
  GPIO_setLow(obj->gpioHandle,GPIO_Number_18);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_18,GPIO_Direction_Output);

  // SOLBON (Valve B)
  GPIO_setMode(obj->gpioHandle,GPIO_Number_19,GPIO_19_Mode_GeneralPurpose);
  GPIO_setPullUp(obj->gpioHandle, GPIO_Number_19, GPIO_PullUp_Disable);
  GPIO_setLow(obj->gpioHandle,GPIO_Number_19);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_19,GPIO_Direction_Output);

  // Setup GPIOs for SCI (Host/Bluetooth Comm)
      GPIO_setPullUp(obj->gpioHandle, GPIO_Number_28, GPIO_PullUp_Enable);
      GPIO_setPullUp(obj->gpioHandle, GPIO_Number_29, GPIO_PullUp_Enable);

      GPIO_setQualification(obj->gpioHandle, GPIO_Number_28, GPIO_Qual_ASync);

      GPIO_setMode(obj->gpioHandle, GPIO_Number_28, GPIO_28_Mode_SCIRXDA);
      GPIO_setMode(obj->gpioHandle, GPIO_Number_29, GPIO_29_Mode_SCITXDA);


  // I2C-SDA and CLK
      GPIO_setPullUp(obj->gpioHandle, GPIO_Number_32, GPIO_PullUp_Enable);
      GPIO_setPullUp(obj->gpioHandle, GPIO_Number_33, GPIO_PullUp_Enable);

      GPIO_setQualification(obj->gpioHandle, GPIO_Number_32, GPIO_Qual_ASync);
      GPIO_setQualification(obj->gpioHandle, GPIO_Number_33, GPIO_Qual_ASync);

      GPIO_setMode(obj->gpioHandle,GPIO_Number_32,GPIO_32_Mode_SDAA);
      GPIO_setMode(obj->gpioHandle,GPIO_Number_33,GPIO_33_Mode_SCLA);

  // SOLAON (Valve A)
  GPIO_setMode(obj->gpioHandle,GPIO_Number_34,GPIO_34_Mode_GeneralPurpose);
  GPIO_setLow(obj->gpioHandle,GPIO_Number_34);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_34,GPIO_Direction_Output);

  // -----------------------------Shared with JTAG-----------------------------------
  // BT_RESET (Bluetooth Reset line)
  GPIO_setMode(obj->gpioHandle,GPIO_Number_35,GPIO_35_Mode_JTAG_TDI);
  GPIO_setLow(obj->gpioHandle,GPIO_Number_35);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_35,GPIO_Direction_Output);

  //JTAG
  GPIO_setMode(obj->gpioHandle,GPIO_Number_36,GPIO_36_Mode_JTAG_TMS);
  GPIO_setMode(obj->gpioHandle,GPIO_Number_37,GPIO_37_Mode_JTAG_TDO);

  //LED_RED (Acually Green On Rev 0 board)
  GPIO_setMode(obj->gpioHandle,GPIO_Number_38,GPIO_38_Mode_JTAG_TCK);
  GPIO_setLow(obj->gpioHandle,GPIO_Number_38);
  GPIO_setDirection(obj->gpioHandle,GPIO_Number_38,GPIO_Direction_Output);

  return;
}  // end of HAL_setupGpios() function


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


  PIE_disable(obj->pieHandle);

  PIE_disableAllInts(obj->pieHandle);

  PIE_clearAllInts(obj->pieHandle);

  PIE_clearAllFlags(obj->pieHandle);

  PIE_setDefaultIntVectorTable(obj->pieHandle);

  PIE_enable(obj->pieHandle);

  return;
} // end of HAL_setupPie() function


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


  CLK_enableAdcClock(obj->clkHandle);


  CLK_enableCompClock(obj->clkHandle,CLK_CompNumber_1);
  CLK_enableCompClock(obj->clkHandle,CLK_CompNumber_2);
  CLK_enableCompClock(obj->clkHandle,CLK_CompNumber_3);

  CLK_enableEcap1Clock(obj->clkHandle);

  CLK_enablePwmClock(obj->clkHandle,PWM_Number_1);
  CLK_enablePwmClock(obj->clkHandle,PWM_Number_2);
  CLK_enablePwmClock(obj->clkHandle,PWM_Number_3);
  CLK_enablePwmClock(obj->clkHandle,PWM_Number_4);

  CLK_disableHrPwmClock(obj->clkHandle);

  CLK_disableI2cClock(obj->clkHandle);

  CLK_enableSciaClock(obj->clkHandle);

  CLK_disableSpiaClock(obj->clkHandle);
  
  CLK_enableTbClockSync(obj->clkHandle);

  return;
} // end of HAL_setupPeripheralClks() function


void HAL_setupPll(HAL_Handle handle,const PLL_ClkFreq_e clkFreq)
{
  HAL_Obj *obj = (HAL_Obj *)handle;


  // make sure PLL is not running in limp mode
  if(PLL_getClkStatus(obj->pllHandle) != PLL_ClkStatus_Normal)
    {
      // reset the clock detect
      PLL_resetClkDetect(obj->pllHandle);

      // ???????
      asm("        ESTOP0");
    }


  // Divide Select must be ClkIn/4 before the clock rate can be changed
  if(PLL_getDivideSelect(obj->pllHandle) != PLL_DivideSelect_ClkIn_by_4)
    {
      PLL_setDivideSelect(obj->pllHandle,PLL_DivideSelect_ClkIn_by_4);
    }


  if(PLL_getClkFreq(obj->pllHandle) != clkFreq)
    {
      // disable the clock detect
      PLL_disableClkDetect(obj->pllHandle);

      // set the clock rate
      PLL_setClkFreq(obj->pllHandle,clkFreq);
    }


  // wait until locked
  while(PLL_getLockStatus(obj->pllHandle) != PLL_LockStatus_Done) {}


  // enable the clock detect
  PLL_enableClkDetect(obj->pllHandle);


  // set divide select to ClkIn/2 to get desired clock rate
  // NOTE: clock must be locked before setting this register
  PLL_setDivideSelect(obj->pllHandle,PLL_DivideSelect_ClkIn_by_2);

  return;
} // end of HAL_setupPll() function


//Modified MArch 6 2015 for ForeverFlo Rev 0 PCB
void HAL_setupPwms(HAL_Handle handle,
                   const uint_least16_t systemFreq_MHz,
                   const float_t pwmPeriod_usec,
                   const uint_least16_t numPwmTicksPerIsrTick)
{
  HAL_Obj   *obj = (HAL_Obj *)handle;
  uint16_t   halfPeriod_cycles = (uint16_t)((float_t)systemFreq_MHz*pwmPeriod_usec) >> 1;
  uint_least8_t    cnt;


  // turns off the outputs of the EPWM peripherals which will put the power switches
  // into a high impedance state.
  PWM_setOneShotTrip(obj->pwmHandle[PWM_Number_2]);
  PWM_setOneShotTrip(obj->pwmHandle[PWM_Number_3]);
  PWM_setOneShotTrip(obj->pwmHandle[PWM_Number_4]);

  //setup PWM2,3,4 for ForeverFlo
  for(cnt=1;cnt<4;cnt++)
    {
      // setup the Time-Base Control Register (TBCTL)
      PWM_setCounterMode(obj->pwmHandle[cnt],PWM_CounterMode_UpDown);
      PWM_disableCounterLoad(obj->pwmHandle[cnt]);
      PWM_setPeriodLoad(obj->pwmHandle[cnt],PWM_PeriodLoad_Immediate);
      PWM_setSyncMode(obj->pwmHandle[cnt],PWM_SyncMode_EPWMxSYNC);
      PWM_setHighSpeedClkDiv(obj->pwmHandle[cnt],PWM_HspClkDiv_by_1);
      PWM_setClkDiv(obj->pwmHandle[cnt],PWM_ClkDiv_by_1);
      PWM_setPhaseDir(obj->pwmHandle[cnt],PWM_PhaseDir_CountUp);
      PWM_setRunMode(obj->pwmHandle[cnt],PWM_RunMode_FreeRun);

      // setup the Timer-Based Phase Register (TBPHS)
      PWM_setPhase(obj->pwmHandle[cnt],0);

      // setup the Time-Base Counter Register (TBCTR)
      PWM_setCount(obj->pwmHandle[cnt],0);

      // setup the Time-Base Period Register (TBPRD)
      // set to zero initially
      PWM_setPeriod(obj->pwmHandle[cnt],0);

      // setup the Counter-Compare Control Register (CMPCTL)
      PWM_setLoadMode_CmpA(obj->pwmHandle[cnt],PWM_LoadMode_Zero);
      PWM_setLoadMode_CmpB(obj->pwmHandle[cnt],PWM_LoadMode_Zero);
      PWM_setShadowMode_CmpA(obj->pwmHandle[cnt],PWM_ShadowMode_Shadow);
      PWM_setShadowMode_CmpB(obj->pwmHandle[cnt],PWM_ShadowMode_Immediate);

      // setup the Action-Qualifier Output A Register (AQCTLA) 
      PWM_setActionQual_CntUp_CmpA_PwmA(obj->pwmHandle[cnt],PWM_ActionQual_Set);
      PWM_setActionQual_CntDown_CmpA_PwmA(obj->pwmHandle[cnt],PWM_ActionQual_Clear);

      // setup the Dead-Band Generator Control Register (DBCTL)
      PWM_setDeadBandOutputMode(obj->pwmHandle[cnt],PWM_DeadBandOutputMode_EPWMxA_Rising_EPWMxB_Falling);
      PWM_setDeadBandPolarity(obj->pwmHandle[cnt],PWM_DeadBandPolarity_EPWMxB_Inverted);

      // setup the Dead-Band Rising Edge Delay Register (DBRED)
      PWM_setDeadBandRisingEdgeDelay(obj->pwmHandle[cnt],HAL_PWM_DBRED_CNT);

      // setup the Dead-Band Falling Edge Delay Register (DBFED)
      PWM_setDeadBandFallingEdgeDelay(obj->pwmHandle[cnt],HAL_PWM_DBFED_CNT);
      // setup the PWM-Chopper Control Register (PCCTL)
      PWM_disableChopping(obj->pwmHandle[cnt]);

      // setup the Trip Zone Select Register (TZSEL)
      PWM_disableTripZones(obj->pwmHandle[cnt]);
    }


  // setup the Event Trigger Selection Register (ETSEL)
  PWM_disableInt(obj->pwmHandle[PWM_Number_2]);
  PWM_setSocAPulseSrc(obj->pwmHandle[PWM_Number_2],PWM_SocPulseSrc_CounterEqualZero);
  PWM_enableSocAPulse(obj->pwmHandle[PWM_Number_2]);
  

  // setup the Event Trigger Prescale Register (ETPS)
  if(numPwmTicksPerIsrTick == 3)
    {
      PWM_setIntPeriod(obj->pwmHandle[PWM_Number_2],PWM_IntPeriod_ThirdEvent);
      PWM_setSocAPeriod(obj->pwmHandle[PWM_Number_2],PWM_SocPeriod_ThirdEvent);
    }
  else if(numPwmTicksPerIsrTick == 2)
    {
      PWM_setIntPeriod(obj->pwmHandle[PWM_Number_2],PWM_IntPeriod_SecondEvent);
      PWM_setSocAPeriod(obj->pwmHandle[PWM_Number_2],PWM_SocPeriod_SecondEvent);
    }
  else
    {
      PWM_setIntPeriod(obj->pwmHandle[PWM_Number_2],PWM_IntPeriod_FirstEvent);
      PWM_setSocAPeriod(obj->pwmHandle[PWM_Number_2],PWM_SocPeriod_FirstEvent);
    }


  // setup the Event Trigger Clear Register (ETCLR)
  PWM_clearIntFlag(obj->pwmHandle[PWM_Number_2]);
  PWM_clearSocAFlag(obj->pwmHandle[PWM_Number_2]);

  // first step to synchronize the pwms
  CLK_disableTbClockSync(obj->clkHandle);

  // since the PWM is configured as an up/down counter, the period register is set to one-half 
  // of the desired PWM period
  PWM_setPeriod(obj->pwmHandle[PWM_Number_2],halfPeriod_cycles);
  PWM_setPeriod(obj->pwmHandle[PWM_Number_3],halfPeriod_cycles);
  PWM_setPeriod(obj->pwmHandle[PWM_Number_4],halfPeriod_cycles);

  // last step to synchronize the pwms
  CLK_enableTbClockSync(obj->clkHandle);

  return;
}  // end of HAL_setupPwms() function


void HAL_setupTimers(HAL_Handle handle,const uint_least16_t systemFreq_MHz)
{
  HAL_Obj  *obj = (HAL_Obj *)handle;
  uint32_t  timerPeriod_cnts = ((uint32_t)systemFreq_MHz * 1000000) - 1;

  // use timer 0 for frequency diagnostics
  TIMER_setDecimationFactor(obj->timerHandle[0],0);
  TIMER_setEmulationMode(obj->timerHandle[0],TIMER_EmulationMode_RunFree);
  TIMER_setPeriod(obj->timerHandle[0],timerPeriod_cnts);
  TIMER_setPreScaler(obj->timerHandle[0],0);

  // use timer 1 for CPU usage diagnostics
  TIMER_setDecimationFactor(obj->timerHandle[1],0);
  TIMER_setEmulationMode(obj->timerHandle[1],TIMER_EmulationMode_RunFree);
  TIMER_setPeriod(obj->timerHandle[1],timerPeriod_cnts);
  TIMER_setPreScaler(obj->timerHandle[1],0);

  return;
}  // end of HAL_setupTimers() function


// end of file
3404.hal.h

  • Hi Gary,

    Your post is being moved to the InstaSPIN forum. The experts there should be able to help.
  • I discovered why my PWMs where not working. I forgot to replace the NULLs in my user.h file. I am now getting three sinewaves on my Vfb pins and all looks good. I will still like someone to verify that no other modifications are needed before I acually plug in a motor. I plan to run Lab2b on my board to generate the motor numbers and offsets for my board.
  • Well, I got brave and connected my motor to my board and I am happy to say everthing worked great. I was able to tune the motor using Lab2b and then update my user.h file ans switch to using Lab7. I am now running the motor. If anyone ever needs to move pin function around just look in my hal.c and hal.h file to see what has to change.
  • Gary,

    Thanks for sharing your code.  I'm trying something similar - I need to expose the eCAP1 pin at pin#40 so I'm trying to move PWM3a & PWM3B to PWM4A & PWM4B.  I was looking through your version of HAL.H and there is something that I don't quite understand.

    In your HAL_setTrigger(HAL_Handle handle, const int16_t minwidth) function about 3/4 through the file you have:

    else if((ignorepwm1 == true) && (ignorepwm2 == false) && (ignorepwm3 == true))
        {
          minNextPulse = nextPulse2;
          pwm = (PWM_Obj *)obj->pwmHandle[PWM_Number_2];
        }

    Shouldn't the PWM_Number_2 be changed to PWM_Number_3?  I'm assuming that the original TI code used nextPulse2 to indicate the 2nd or middle PWM channel. So, wouldn't that be PWM_Number_3 for your arrangement?  Since you're using PWM2, PWM3 and PWM4 and not the 1, 2, 3 that TI uses.


    Now I just have to figure out why the compiler is giving me a Description   "#177-D subscript out of range" warning every time it sees PWM_Number_4 in my code.

    Richard C.

  • Yes, you are correct. I need to change these names to match the correct PWM. However, they do not affect the function since they are just bools that are defined at the beginning of the function. In other words, I could name ignorepwm1 to ignorepwm888 if I wanted and the function would still work. What is important for the function to work is that I changed what is in the if statement brackets to the correct PWMs. 

    Thanks for spotting this for it will save me some embarrassment when my code gets reviewed by our in house regulatory code police. Or maybe it’s a good idea to leave it in just to see if they are on their toes.

    I am not sure what is causing your error. So far, my code is running the motor fine and compiling fine. If you continue to have problems, let me know if I can try something to help.

     

    Also on a different note. If you are using the latest version of the 28027F.cmd file be sure to change the following line.

     

    FLASHA_D : origin = 0x3F4000, length = 0x007F80 //WRONG for 28027

    Should be

    FLASHA_D : origin = 0x3F0000, length = 0x007F80

    This caused me some headache just yesterday when my code finally reached a size that caused me to overrun my Flash because of this bad definition in the linker command file. A TI person just confirmed this will be fixed in the next rev.

  • Hi Gary,

    First off - thanks for responding.  But I guess I'm a bit confused by your answer.  I was under the impression that the enum PWM_Number_X was used in describing the PWM object and are not just BOOLs.

    In the original TI code every time they use

    minNextPulse = nextPulseX;

    They then go on and set the pwm to that PWM#.  So, since they're using PWM1,2 &3 they set pwm =  

      pwm = (PWM_Obj *)obj->pwmHandle[PWM_Number_2];  //Which is their 2nd PWM channel

    But since you're using PWM2,3&4, shouldn't you set pwm to:

    pwm = (PWM_Obj *)obj->pwmHandle[PWM_Number_3];  //Which is your 2nd PWM channel?

    I'm asking since I want to use PWM1,2 &4 so do I set pwm to:

    pwm = (PWM_Obj *)obj->pwmHandle[PWM_Number_2];  //Which is my 2nd PWM channel?


    Or am I completely off my rocker?

    Thanks again,

    Richard C

  • Sorry I did not read your first question correctly. I thought you were just referring to the ignorepwmX bools being the wrong number. You are correct that I should have changed the

    pwm = (PWM_Obj *)obj->pwmHandle[PWM_Number_2];

    to

    pwm = (PWM_Obj *)obj->pwmHandle[PWM_Number_3];

    However, after looking closer, this function is mute in my code. This Function is used in LAB10C for Space Vector Over-Modulation. Since I am using Lab7 as my base code this function never gets called by my code. Thanks for catching this. I am sure I could have done some damage if I ever tried to use it. Of course since my motor is running off a 390Vdc supply, my co-workers are getting used to sparks flying ever now and then.

    Sorry for the confusion. Hope this helps.