osc.c

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

#include "sw/drivers/osc/src/32b/f28x/f2806x/osc.h"


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


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


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


OSC_Handle OSC_init(void *pMemory,const size_t numBytes)
{
  OSC_Handle oscHandle;


  if(numBytes < sizeof(OSC_Obj))
    return((OSC_Handle)NULL);

  // assign the handle
  oscHandle = (OSC_Handle)pMemory;

  return(oscHandle);
} // end of OSC_init() function


void OSC_setCoarseTrim(OSC_Handle clkHandle,
                       const OSC_Number_e oscNumber,
                       const uint_least8_t trimValue)
{
  OSC_Obj *osc = (OSC_Obj *)clkHandle;

  ENABLE_PROTECTED_REGISTER_WRITE_MODE;

  if(oscNumber == OSC_Number_1)
    {
      // clear the bits
      osc->INTOSC1TRIM &= (~OSC_INTOSCnTRIM_COARSE_BITS);

      // set the bits
      osc->INTOSC1TRIM |= trimValue;
    }
  else
    {
      // clear the bits
      osc->INTOSC2TRIM &= (~OSC_INTOSCnTRIM_COARSE_BITS);

      // set the bits
      osc->INTOSC2TRIM |= trimValue;
    }
    
  DISABLE_PROTECTED_REGISTER_WRITE_MODE;

  return;
} // end of OSC_setCoarseTrim() function


void OSC_setFineTrim(OSC_Handle clkHandle,
                     const OSC_Number_e oscNumber,
                     const uint_least8_t trimValue)
{
  OSC_Obj *osc = (OSC_Obj *)clkHandle;

  ENABLE_PROTECTED_REGISTER_WRITE_MODE;

  if(oscNumber == OSC_Number_1)
    {
      // clear the bits
      osc->INTOSC1TRIM &= (~OSC_INTOSCnTRIM_FINE_BITS);

      // set the bits
      osc->INTOSC1TRIM |= trimValue << 9;
    }
  else
    {
      // clear the bits
      osc->INTOSC2TRIM &= (~OSC_INTOSCnTRIM_FINE_BITS);

      // set the bits
      osc->INTOSC2TRIM |= trimValue << 9;
    }
    
  DISABLE_PROTECTED_REGISTER_WRITE_MODE;

  return;
} // end of OSC_setFineTrim() function


void OSC_setTrim(OSC_Handle clkHandle,
                     const OSC_Number_e oscNumber,
                     const uint16_t trimValue)
{
  OSC_Obj *osc = (OSC_Obj *)clkHandle;

  ENABLE_PROTECTED_REGISTER_WRITE_MODE;

  if(oscNumber == OSC_Number_1)
    {
      // set the bits
      osc->INTOSC1TRIM = trimValue;
    }
  else
    {
      // set the bits
      osc->INTOSC2TRIM = trimValue;
    }

  DISABLE_PROTECTED_REGISTER_WRITE_MODE;

  return;
} // end of OSC_setTrim() function


// end of file