osc.c File Reference

#include <stdlib.h>
#include "../inc/hw_types.h"
#include "../inc/hw_ccfg.h"
#include "../inc/hw_fcfg1.h"
#include "aon_batmon.h"
#include "aon_rtc.h"
#include "osc.h"
#include "sys_ctrl.h"
#include "setup_rom.h"

Data Structures
struct	OscHfGlobals_t
struct	hposc_insertions_t
struct	hposc_param_t

Macros
#define	RTC_CV_TO_MS(x)   (( 1000 * ( x )) >> 16 )
#define	RTC_CV_TO_US(x)   (( 1000000 * ( x )) >> 16 )
#define	D1OFFSET_25C   (-16)
#define	D2OFFSET_85C   (-23)
#define	D3OFFSET_n40C   (5)
#define	HPOSC_COEFF_BITS   (20)
#define	HPOSC_COEFF0_BITS   (16)
#define	HPOSC_D_BITS   (30)
#define	HPOSC_COEFF0_SHIFT   (HPOSC_COEFF_BITS - HPOSC_COEFF0_BITS)
#define	HPOSC_SHIFT1   (2*HPOSC_COEFF_BITS - HPOSC_D_BITS)
#define	HPOSC_DC_BIAS   (100000)

Functions
void	OSCClockSourceSet (uint32_t ui32SrcClk, uint32_t ui32Osc)
	Configure the oscillator input to the a source clock. More...
uint32_t	OSCClockSourceGet (uint32_t ui32SrcClk)
	Get the source clock settings. More...
uint32_t	OSCHF_GetStartupTime (uint32_t timeUntilWakeupInMs)
	Returns maximum startup time (in microseconds) of XOSC_HF. More...
void	OSCHF_TurnOnXosc (void)
	Turns on XOSC_HF (but without switching to XOSC_HF). More...
bool	OSCHF_AttemptToSwitchToXosc (void)
	Switch to XOSC_HF if XOSC_HF is ready. More...
void	OSCHF_SwitchToRcOscTurnOffXosc (void)
	Switch to RCOSC_HF and turn off XOSC_HF. More...
void	OSC_AdjustXoscHfCapArray (int32_t capArrDelta)
	Adjust the XOSC HF cap array relative to the factory setting. More...
static void	multiplyColumns (int64_t *v1, int64_t *v2, int64_t *pBuf, uint8_t shift)
static int64_t	findDenominator (int64_t *col0, int64_t *col1, int64_t *col2)
static int64_t	findNumerator (int32_t *pInput, int64_t *pBuf)
static void	findHposcCoefficients (int32_t *pInput, int64_t *col0, int64_t *col1, int64_t *col2, hposc_param_t *pParam)
static void	findHposcPc (int64_t *pCoeff, uint8_t *pBits, int32_t *pTemp, uint8_t nTemp, int64_t *pOutput)
static void	readTempAndFreq (uint32_t regAddr, int32_t *pTemp, int32_t *pdFreq, int32_t deltaFreq)
void	OSC_HPOSCInitializeFrequencyOffsetParameters (void)
	HPOSC initialization function. Must always be called before using HPOSC. More...
void	OSC_HPOSC_Debug_InitFreqOffsetParams (HposcDebugData_t *pDebugData)
	Debug function to calculate the HPOSC polynomials for experimental data sets. More...
void	OSC_HPOSCInitializeSingleInsertionFreqOffsParams (uint32_t measFieldAddress)
	Special HPOSC initialization function for single temperature compensation. More...
int32_t	OSC_HPOSCRelativeFrequencyOffsetGet (int32_t tempDegC)
	Calculate the temperature dependent relative frequency offset of HPOSC. More...
int16_t	OSC_HPOSCRelativeFrequencyOffsetToRFCoreFormatConvert (int32_t HPOSC_RelFreqOffset)
	Converts the relative frequency offset of HPOSC to the RF Core parameter format. More...
void	OSC_HPOSCRtcCompensate (int32_t relFreqOffset)
	Compensate the RTC increment based on the relative frequency offset of HPOSC. More...
uint32_t	OSCHF_DebugGetCrystalAmplitude (void)
	Get crystal amplitude (assuming crystal is running). More...
uint32_t	OSCHF_DebugGetExpectedAverageCrystalAmplitude (void)
	Get the expected average crystal amplitude. More...
uint32_t	OSCHF_DebugGetCrystalStartupTime (void)
	Measure the crystal startup time. More...

Variables
static OscHfGlobals_t	oscHfGlobals
int32_t	_hposcCoeffs [4] = {0}

Macro Definition Documentation

D1OFFSET_25C

#define D1OFFSET_25C   (-16)

Referenced by OSC_HPOSCInitializeFrequencyOffsetParameters().

D2OFFSET_85C

#define D2OFFSET_85C   (-23)

Referenced by OSC_HPOSCInitializeFrequencyOffsetParameters().

D3OFFSET_n40C

#define D3OFFSET_n40C   (5)

Referenced by OSC_HPOSCInitializeFrequencyOffsetParameters().

HPOSC_COEFF0_BITS

#define HPOSC_COEFF0_BITS   (16)

Referenced by findHposcCoefficients(), and OSC_HPOSCRelativeFrequencyOffsetGet().

HPOSC_COEFF0_SHIFT

#define HPOSC_COEFF0_SHIFT   (HPOSC_COEFF_BITS - HPOSC_COEFF0_BITS)

Referenced by findHposcCoefficients(), and OSC_HPOSCRelativeFrequencyOffsetGet().

HPOSC_COEFF_BITS

#define HPOSC_COEFF_BITS   (20)

Referenced by findDenominator(), findHposcCoefficients(), and findHposcPc().

HPOSC_D_BITS

#define HPOSC_D_BITS   (30)

Referenced by findHposcCoefficients().

HPOSC_DC_BIAS

#define HPOSC_DC_BIAS   (100000)

Referenced by findHposcCoefficients().

HPOSC_SHIFT1

#define HPOSC_SHIFT1   (2*HPOSC_COEFF_BITS - HPOSC_D_BITS)

Referenced by findDenominator(), and findHposcCoefficients().

RTC_CV_TO_MS

#define RTC_CV_TO_MS

(

x

)

(( 1000 * ( x )) >> 16 )

Referenced by OSCHF_GetStartupTime().

RTC_CV_TO_US

#define RTC_CV_TO_US

(

x

)

(( 1000000 * ( x )) >> 16 )

Referenced by OSCHF_AttemptToSwitchToXosc(), and OSCHF_GetStartupTime().

Function Documentation

findDenominator()

static int64_t findDenominator ( int64_t *  col0, int64_t *  col1, int64_t *  col2  )

static

Referenced by findHposcCoefficients().

{
    int64_t tmp, tmpBuf[6];

    multiplyColumns(col1, col2, tmpBuf, HPOSC_SHIFT1); // Keep HPOSC_D_BITS precision

    tmp = (tmpBuf[0]*col0[0] - tmpBuf[1]*col0[0] - tmpBuf[2]*col0[1] +
           tmpBuf[3]*col0[1] + tmpBuf[4]*col0[2] - tmpBuf[5]*col0[2]) >> HPOSC_COEFF_BITS;

    return tmp;
}

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findHposcCoefficients()

static void findHposcCoefficients ( int32_t *  pInput, int64_t *  col0, int64_t *  col1, int64_t *  col2, hposc_param_t *  pParam  )

static

Referenced by OSC_HPOSC_Debug_InitFreqOffsetParams(), OSC_HPOSCInitializeFrequencyOffsetParameters(), and OSC_HPOSCInitializeSingleInsertionFreqOffsParams().

{
    int64_t d,c0,c1,c2,cn,tmpBuf[6];
    int32_t inputBuf[3];
    uint8_t i;

    if(col1 == NULL) /* 1 insertion */
    {
        inputBuf[0] = pInput[0] - HPOSC_DC_BIAS;
        c0 = (((int64_t)inputBuf[0] << HPOSC_D_BITS) / col0[0]);
        c1 = 0;
        c2 = 0;
    }
    else /* 3 insertion */
    {
        /* Apply DC bias to input data */
        for(i = 0; i < 3; i++)
        {
            inputBuf[i] = pInput[i] - HPOSC_DC_BIAS;
        }

        /* Solve intermediate parameters, d: HPOSC_D_BITS, c: HPOSC_COEFF_BITS*2 bits */
        d = findDenominator(col0, col1, col2);

        multiplyColumns(col1, col2, tmpBuf, 0);
        cn = findNumerator(inputBuf, tmpBuf);
        c0 = cn / d;

        multiplyColumns(col0, col2, tmpBuf, 0);
        cn = -1*findNumerator(inputBuf, tmpBuf);
        c1 = cn / d;

        multiplyColumns(col0, col1, tmpBuf, 0);
        cn = findNumerator(inputBuf, tmpBuf);
        c2 = cn / d;
    }

    /* Compute TCF polynomial coefficients */
    for(i = 0; i < 4; i++)
    {
        cn = (((pParam->pu0c[i]*c0) >> (pParam->pu0b[i] - HPOSC_COEFF_BITS)) +
              ((pParam->pu1c[i]*c1) >> (pParam->pu1b[i] - HPOSC_COEFF_BITS)) +
              ((pParam->pu2c[i]*c2) >> (pParam->pu2b[i] - HPOSC_COEFF_BITS))) >> HPOSC_SHIFT1;

        if(i<3)
        {
            _hposcCoeffs[3-i] = cn;
        }
        else
        {
            _hposcCoeffs[0] = (cn >> HPOSC_COEFF0_SHIFT) + ((int64_t)HPOSC_DC_BIAS << HPOSC_COEFF0_BITS); // p[0] is combined with the DC bias
        }
    }
}

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findHposcPc()

static void findHposcPc ( int64_t *  pCoeff, uint8_t *  pBits, int32_t *  pTemp, uint8_t  nTemp, int64_t *  pOutput  )

static

Referenced by OSC_HPOSC_Debug_InitFreqOffsetParams(), OSC_HPOSCInitializeFrequencyOffsetParameters(), and OSC_HPOSCInitializeSingleInsertionFreqOffsParams().

{
    uint8_t i;
    int32_t t1,t2,t3;

    for(i = 0; i < nTemp; i++)
    {
        t1 = pTemp[i];
        t2 = t1*t1;
        t3 = t2*t1;

        pOutput[i] = (((int64_t)pCoeff[0]*t3)>>(pBits[0]-HPOSC_COEFF_BITS)) + (((int64_t)pCoeff[1]*t2)>>(pBits[1]-HPOSC_COEFF_BITS)) +
                     (((int64_t)pCoeff[2]*t1)>>(pBits[2]-HPOSC_COEFF_BITS)) + (((int64_t)pCoeff[3]   )>>(pBits[3]-HPOSC_COEFF_BITS));
    }
}

findNumerator()

static int64_t findNumerator ( int32_t *  pInput, int64_t *  pBuf  )

static

Referenced by findHposcCoefficients().

{
    int64_t tmp;

    tmp = ((int64_t)pInput[0]*pBuf[0]) - ((int64_t)pInput[0]*pBuf[1]) - ((int64_t)pInput[1]*pBuf[2]) +
          ((int64_t)pInput[1]*pBuf[3]) + ((int64_t)pInput[2]*pBuf[4]) - ((int64_t)pInput[2]*pBuf[5]);

    return tmp;
}

multiplyColumns()

static void multiplyColumns ( int64_t *  v1, int64_t *  v2, int64_t *  pBuf, uint8_t  shift  )

static

Referenced by findDenominator(), and findHposcCoefficients().

{
    pBuf[0] = (v1[1]*v2[2]) >> shift;
    pBuf[1] = (v1[2]*v2[1]) >> shift;
    pBuf[2] = (v1[0]*v2[2]) >> shift;
    pBuf[3] = (v1[2]*v2[0]) >> shift;
    pBuf[4] = (v1[0]*v2[1]) >> shift;
    pBuf[5] = (v1[1]*v2[0]) >> shift;
}

readTempAndFreq()

static void readTempAndFreq ( uint32_t  regAddr, int32_t *  pTemp, int32_t *  pdFreq, int32_t  deltaFreq  )

static

Referenced by OSC_HPOSC_Debug_InitFreqOffsetParams(), OSC_HPOSCInitializeFrequencyOffsetParameters(), and OSC_HPOSCInitializeSingleInsertionFreqOffsParams().

{
    uint32_t insertionData = HWREG(regAddr);

    /* temp_stored = Temperature - 27, offset by -27C */
    *pTemp = (((int32_t)( insertionData << ( 32 - FCFG1_HPOSC_MEAS_1_HPOSC_T1_W - FCFG1_HPOSC_MEAS_1_HPOSC_T1_S )))
                                        >> ( 32 - FCFG1_HPOSC_MEAS_1_HPOSC_T1_W ));

    /* dFreq_stored = round( (Freq/12e6 - 1) * 2^22 ), 12MHz is the ideal frequency */
    *pdFreq = (((int32_t)( insertionData << ( 32 - FCFG1_HPOSC_MEAS_1_HPOSC_D1_W - FCFG1_HPOSC_MEAS_1_HPOSC_D1_S )))
                                         >> ( 32 - FCFG1_HPOSC_MEAS_1_HPOSC_D1_W ));
    *pdFreq = *pdFreq + deltaFreq;
}

Variable Documentation

_hposcCoeffs

int32_t _hposcCoeffs[4] = {0}

Referenced by findHposcCoefficients(), and OSC_HPOSCRelativeFrequencyOffsetGet().

oscHfGlobals

OscHfGlobals_t oscHfGlobals

static