Universal Decoder Routines

Macros
#define	TRIGGER_FILTER_OFF   0
#define	TRIGGER_FILTER_LITE   1
#define	TRIGGER_FILTER_MEDIUM   2
#define	TRIGGER_FILTER_AGGRESSIVE   3

Functions
static void	addToothLogEntry (unsigned long toothTime, byte whichTooth)
void	loggerPrimaryISR (void)
void	loggerSecondaryISR (void)
void	loggerTertiaryISR (void)
static decoder_status_t	sharedGetStatus (void)
static uint16_t	timeToAngleIntervalTooth (uint32_t time)
static bool	IsCranking (const statuses &status)
TESTABLE_STATIC bool	sharedEngineIsRunning (uint32_t curTime)
static decoder_features_t	sharedGetDecoderFeatures (void)
static void	sharedDecoderReset (void)
TESTABLE_STATIC bool	SetRevolutionTime (uint32_t revTime)
static bool	UpdateRevolutionTimeFromTeeth (bool isCamTeeth)
static uint16_t	RpmFromRevolutionTimeUs (uint32_t revTime)
static uint16_t	stdGetRPM (bool isCamTeeth)
static void	setFilter (unsigned long curGap)
static int	crankingGetRPM (byte totalTeeth, bool isCamTeeth)
static void	checkPerToothTiming (int16_t crankAngle, uint16_t currentTooth)
static uint8_t	getConfigPriTriggerEdge (const config4 &page4)
static uint8_t	getConfigSecTriggerEdge (const config4 &page4)
static uint8_t	getConfigTerTriggerEdge (const config10 &page10)

Variables
static decoder_features_t	decoderFeatures

Detailed Description

Universal (shared between decoders) decoder routines.

Macro Definition Documentation

TRIGGER_FILTER_AGGRESSIVE

#define TRIGGER_FILTER_AGGRESSIVE   3

TRIGGER_FILTER_LITE

#define TRIGGER_FILTER_LITE   1

TRIGGER_FILTER_MEDIUM

#define TRIGGER_FILTER_MEDIUM   2

TRIGGER_FILTER_OFF

#define TRIGGER_FILTER_OFF   0

Function Documentation

addToothLogEntry()

static void addToothLogEntry ( unsigned long  toothTime, byte  whichTooth  )

inlinestatic

Add tooth log entry to toothHistory (array). Enabled by (either) currentStatus.toothLogEnabled and currentStatus.compositeTriggerUsed.

Parameters

toothTime	- Tooth Time
whichTooth	- 0 for Primary (Crank), 2 for Secondary (Cam) 3 for Tertiary (Cam)

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checkPerToothTiming()

static void checkPerToothTiming ( int16_t  crankAngle, uint16_t  currentTooth  )

inlinestatic

On decoders that are enabled for per tooth based timing adjustments, this function performs the timer compare changes on the schedules themselves For each ignition channel, a check is made whether we're at the relevant tooth and whether that ignition schedule is currently running Only if both these conditions are met will the schedule be updated with the latest timing information. If it's the correct tooth, but the schedule is not yet started, calculate and an end compare value (This situation occurs when both the start and end of the ignition pulse happen after the end tooth, but before the next tooth)

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crankingGetRPM()

static int crankingGetRPM ( byte  totalTeeth, bool  isCamTeeth  )

static

This is a special case of RPM measure that is based on the time between the last 2 teeth rather than the time of the last full revolution. This gives much more volatile reading, but is quite useful during cranking, particularly on low resolution patterns. It can only be used on patterns where the teeth are evenly spaced. It takes an argument of the full (COMPLETE) number of teeth per revolution. For a missing tooth wheel, this is the number if the tooth had NOT been missing (Eg 36-1 = 36)

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getConfigPriTriggerEdge()

static uint8_t getConfigPriTriggerEdge ( const config4 &  page4 )

static

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getConfigSecTriggerEdge()

static uint8_t getConfigSecTriggerEdge ( const config4 &  page4 )

static

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getConfigTerTriggerEdge()

static uint8_t getConfigTerTriggerEdge ( const config10 &  page10 )

static

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IsCranking()

static bool IsCranking ( const statuses &  status )

inlinestatic

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loggerPrimaryISR()

void loggerPrimaryISR

(

void

)

Interrupt handler for primary trigger. This function is called on both the rising and falling edges of the primary trigger, when either the composite or tooth loggers are turned on.

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loggerSecondaryISR()

void loggerSecondaryISR

(

void

)

Interrupt handler for secondary trigger. As loggerPrimaryISR, but for the secondary trigger.

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loggerTertiaryISR()

void loggerTertiaryISR

(

void

)

Interrupt handler for third trigger. As loggerPrimaryISR, but for the third trigger.

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RpmFromRevolutionTimeUs()

static uint16_t RpmFromRevolutionTimeUs ( uint32_t  revTime )

inlinestatic

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setFilter()

static void setFilter ( unsigned long  curGap )

static

Sets the new filter time based on the current settings. This ONLY works for even spaced decoders.

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SetRevolutionTime()

TESTABLE_STATIC bool SetRevolutionTime

(

uint32_t

revTime

)

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sharedDecoderReset()

static void sharedDecoderReset ( void  )

static

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sharedEngineIsRunning()

TESTABLE_STATIC bool sharedEngineIsRunning

(

uint32_t

curTime

)

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sharedGetDecoderFeatures()

static decoder_features_t sharedGetDecoderFeatures ( void  )

static

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sharedGetStatus()

static decoder_status_t sharedGetStatus ( void  )

static

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stdGetRPM()

static uint16_t stdGetRPM ( bool  isCamTeeth )

static

Compute RPM. As nearly all the decoders use a common method of determining RPM (The time the last full revolution took) A common function is simpler.

Parameters

degreesOver

- the number of crank degrees between tooth #1s. Some patterns have a tooth #1 every crank rev, others are every cam rev.

Returns

RPM

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timeToAngleIntervalTooth()

static uint16_t timeToAngleIntervalTooth ( uint32_t  time )

static

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UpdateRevolutionTimeFromTeeth()

static bool UpdateRevolutionTimeFromTeeth ( bool  isCamTeeth )

static

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Variable Documentation

decoderFeatures

decoder_features_t decoderFeatures

static