sensors.cpp File Reference

#include "sensors.h"
#include "crankMaths.h"
#include "globals.h"
#include "maths.h"
#include "storage.h"
#include "comms.h"
#include "idle.h"
#include "corrections.h"
#include "pages.h"
#include "decoders.h"
#include "auxiliaries.h"
#include "utilities.h"
#include "unit_testing.h"
#include "sensors_map_structs.h"
#include "units.h"
#include "atomic.h"
#include "board_definition.h"

Functions
TESTABLE_INLINE_STATIC int16_t	fastMap10Bit (uint16_t value, int16_t rangeMin, int16_t rangeMax)
	A specialist function to map a value in the range [0, 1023] (I.e. 10-bit) to a different range.
static uint16_t	readAnalogPin (uint8_t pin)
static uint16_t	readAnalogSensor (uint8_t pin)
static uint16_t	readMAPSensor (uint8_t pin)
void	initialiseADC (void)
TESTABLE_INLINE_STATIC bool	instanteneousMAPReading (void)
static bool	cycleAverageMAPReadingAccumulate (map_cycle_average_t &cycle_average, const map_adc_readings_t &sensorReadings)
static void	reset (const statuses &current, map_cycle_average_t &cycle_average, const map_adc_readings_t &sensorReadings)
static bool	cycleAverageEndCycle (const statuses &current, map_cycle_average_t &cycle_average, map_adc_readings_t &sensorReadings)
static bool	isCycleCurrent (const statuses &current, uint32_t cycleStartIndex)
static bool	isCycleCurrent (const statuses &current, const map_cycle_average_t &cycle_avg)
TESTABLE_INLINE_STATIC bool	canUseCycleAverage (const statuses &current, const config2 &page2)
TESTABLE_INLINE_STATIC bool	cycleAverageMAPReading (const statuses &current, const config2 &page2, map_cycle_average_t &cycle_average, map_adc_readings_t &sensorReadings)
static bool	cycleMinimumAccumulate (map_cycle_min_t &cycle_min, const map_adc_readings_t &sensorReadings)
static void	reset (const statuses &current, map_cycle_min_t &cycle_min, const map_adc_readings_t &sensorReadings)
static bool	cycleMinimumEndCycle (const statuses &current, map_cycle_min_t &cycle_min, map_adc_readings_t &sensorReadings)
static bool	isCycleCurrent (const statuses &current, const map_cycle_min_t &cycle_min)
TESTABLE_INLINE_STATIC bool	cycleMinimumMAPReading (const statuses &current, const config2 &page2, map_cycle_min_t &cycle_min, map_adc_readings_t &sensorReadings)
static bool	eventAverageAccumulate (map_event_average_t &eventAverage, const map_adc_readings_t &sensorReadings)
static bool	isIgnitionEventValid (const map_event_average_t &eventAverage)
static void	reset (map_event_average_t &eventAverage, const map_adc_readings_t &sensorReadings)
static bool	eventAverageEndEvent (map_event_average_t &eventAverage, map_adc_readings_t &sensorReadings)
static bool	isIgnitionEventCurrent (const map_event_average_t &eventAverage)
TESTABLE_INLINE_STATIC bool	canUseEventAverage (const statuses &current, const config2 &page2)
TESTABLE_INLINE_STATIC bool	eventAverageMAPReading (const statuses &current, const config2 &page2, map_event_average_t &eventAverage, map_adc_readings_t &sensorReadings)
static bool	isValidMapSensorReading (uint16_t reading)
TESTABLE_INLINE_STATIC uint16_t	validateFilterMapSensorReading (uint16_t reading, uint8_t alpha, uint16_t prior)
static uint16_t	readFilteredMapADC (uint8_t pin, uint8_t alpha, uint16_t prior)
static map_adc_readings_t	readMapSensors (const map_adc_readings_t &previousReadings, const config4 &page4, bool useEMAP)
static void	storeLastMAPReadings (map_last_read_t &lastRead, uint16_t oldMAPValue)
static uint16_t	mapADCToMAP (uint16_t mapADC, int8_t mapMin, uint16_t mapMax)
static void	setMAPValuesFromReadings (const map_adc_readings_t &readings, const config2 &page2, bool useEMAP, statuses &current)
void	readMAP (void)
int16_t	getMAPDelta (void)
	Get the MAP change between the last 2 readings.
uint32_t	getMAPDeltaTime (void)
	Get the time in µS between the last 2 MAP readings.
void	readTPS (bool useFilter)
void	readCLT (bool useFilter)
void	readIAT (void)
static bool	isValidBaro (uint8_t baro)
static void	setBaroFromSensorReading (uint16_t sensorReading)
static void	setBaroFromMAP (void)
void	readBaro (void)
void	initialiseMAPBaro (void)
	Initialize the MAP calculation & Baro values.
void	resetMAPcycleAndEvent (void)
void	readO2 (void)
void	readO2_2 (void)
void	readBat (void)
uint32_t	vssGetPulseGap (uint8_t historyIndex)
	Returns the VSS pulse gap for a given history point.
uint16_t	getSpeed (void)
byte	getGear (void)
byte	getFuelPressure (void)
byte	getOilPressure (void)
uint8_t	getAnalogKnock (void)
void	flexPulse (void)
void	knockPulse (void)
void	vssPulse (void)
	The ISR function for VSS pulses.
uint16_t	readAuxanalog (uint8_t analogPin)
uint16_t	readAuxdigital (uint8_t digitalPin)

Variables
uint8_t	statusSensors = 0
static volatile uint32_t	vssTimes [VSS_SAMPLES] = {0}
static volatile uint8_t	vssIndex = 0U
volatile uint8_t	flexCounter = 0U
static volatile uint32_t	flexStartTime = 0UL
volatile uint32_t	flexPulseWidth = 0U
static map_algorithm_t	mapAlgorithmState
static uint16_t	cltCalibration_bins [32]
static uint16_t	cltCalibration_values [32]
static uint16_t	iatCalibration_bins [32]
static uint16_t	iatCalibration_values [32]
static uint16_t	o2Calibration_bins [32]
static uint8_t	o2Calibration_values [32]
static constexpr uint16_t	VALID_MAP_MAX =1022U
static constexpr uint16_t	VALID_MAP_MIN =2U

Detailed Description

Read sensors with appropriate timing / scheduling.

Function Documentation

canUseCycleAverage()

TESTABLE_INLINE_STATIC bool canUseCycleAverage	(	const statuses &	current,
		const config2 &	page2
	)

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canUseEventAverage()

TESTABLE_INLINE_STATIC bool canUseEventAverage	(	const statuses &	current,
		const config2 &	page2
	)

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cycleAverageEndCycle()

static bool cycleAverageEndCycle ( const statuses &  current, map_cycle_average_t &  cycle_average, map_adc_readings_t &  sensorReadings  )

inlinestatic

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cycleAverageMAPReading()

TESTABLE_INLINE_STATIC bool cycleAverageMAPReading	(	const statuses &	current,
		const config2 &	page2,
		map_cycle_average_t &	cycle_average,
		map_adc_readings_t &	sensorReadings
	)

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cycleAverageMAPReadingAccumulate()

static bool cycleAverageMAPReadingAccumulate ( map_cycle_average_t &  cycle_average, const map_adc_readings_t &  sensorReadings  )

inlinestatic

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cycleMinimumAccumulate()

static bool cycleMinimumAccumulate ( map_cycle_min_t &  cycle_min, const map_adc_readings_t &  sensorReadings  )

inlinestatic

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cycleMinimumEndCycle()

static bool cycleMinimumEndCycle ( const statuses &  current, map_cycle_min_t &  cycle_min, map_adc_readings_t &  sensorReadings  )

inlinestatic

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cycleMinimumMAPReading()

TESTABLE_INLINE_STATIC bool cycleMinimumMAPReading	(	const statuses &	current,
		const config2 &	page2,
		map_cycle_min_t &	cycle_min,
		map_adc_readings_t &	sensorReadings
	)

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eventAverageAccumulate()

static bool eventAverageAccumulate ( map_event_average_t &  eventAverage, const map_adc_readings_t &  sensorReadings  )

inlinestatic

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eventAverageEndEvent()

static bool eventAverageEndEvent ( map_event_average_t &  eventAverage, map_adc_readings_t &  sensorReadings  )

inlinestatic

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eventAverageMAPReading()

TESTABLE_INLINE_STATIC bool eventAverageMAPReading	(	const statuses &	current,
		const config2 &	page2,
		map_event_average_t &	eventAverage,
		map_adc_readings_t &	sensorReadings
	)

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fastMap10Bit()

TESTABLE_INLINE_STATIC int16_t fastMap10Bit	(	uint16_t	value,
		int16_t	rangeMin,
		int16_t	rangeMax
	)

A specialist function to map a value in the range [0, 1023] (I.e. 10-bit) to a different range.

Mostly used for analog input voltage level to real world value conversions.

analogRead returns a number in the range [0, 1023], representing the pin input voltage from min to max (typically 0V - 5V) We need to convert that value to the real world value the sensor is reading (pressure, temperature etc.) If:

• rangeMin is the real world value when the sensor is reading 0V
• rangeMax is the real world measurement when the sensor is reading 5V
• There is a linear relationship between voltage output and the real world value.

then this function will return the real world measurement (kPa, °C etc)

Parameters

value	Value to map (should be in range [0, 1023])
rangeMin	Minimum of the output range
rangeMax	Maximum of the output range

Returns

int16_t

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flexPulse()

void flexPulse

(

void

)

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getAnalogKnock()

uint8_t getAnalogKnock

(

void

)

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getFuelPressure()

byte getFuelPressure

(

void

)

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getGear()

byte getGear

(

void

)

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getMAPDelta()

int16_t getMAPDelta

(

void

)

Get the MAP change between the last 2 readings.

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getMAPDeltaTime()

uint32_t getMAPDeltaTime

(

void

)

Get the time in µS between the last 2 MAP readings.

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getOilPressure()

byte getOilPressure

(

void

)

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getSpeed()

uint16_t getSpeed

(

void

)

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initialiseADC()

void initialiseADC

(

void

)

Init all ADC conversions by setting resolutions, etc.

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initialiseMAPBaro()

void initialiseMAPBaro

(

void

)

Initialize the MAP calculation & Baro values.

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instanteneousMAPReading()

TESTABLE_INLINE_STATIC bool instanteneousMAPReading

(

void

)

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isCycleCurrent() [1/3]

static bool isCycleCurrent ( const statuses &  current, const map_cycle_average_t &  cycle_avg  )

inlinestatic

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isCycleCurrent() [2/3]

static bool isCycleCurrent ( const statuses &  current, const map_cycle_min_t &  cycle_min  )

inlinestatic

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isCycleCurrent() [3/3]

static bool isCycleCurrent ( const statuses &  current, uint32_t  cycleStartIndex  )

inlinestatic

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isIgnitionEventCurrent()

static bool isIgnitionEventCurrent ( const map_event_average_t &  eventAverage )

inlinestatic

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isIgnitionEventValid()

static bool isIgnitionEventValid ( const map_event_average_t &  eventAverage )

inlinestatic

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isValidBaro()

static bool isValidBaro ( uint8_t  baro )

inlinestatic

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isValidMapSensorReading()

static bool isValidMapSensorReading ( uint16_t  reading )

inlinestatic

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knockPulse()

void knockPulse

(

void

)

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mapADCToMAP()

static uint16_t mapADCToMAP ( uint16_t  mapADC, int8_t  mapMin, uint16_t  mapMax  )

inlinestatic

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readAnalogPin()

static uint16_t readAnalogPin ( uint8_t  pin )

inlinestatic

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readAnalogSensor()

static uint16_t readAnalogSensor ( uint8_t  pin )

inlinestatic

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readAuxanalog()

uint16_t readAuxanalog

(

uint8_t

analogPin

)

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readAuxdigital()

uint16_t readAuxdigital

(

uint8_t

digitalPin

)

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readBaro()

void readBaro

(

void

)

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readBat()

void readBat

(

void

)

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readCLT()

void readCLT

(

bool

useFilter

)

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readFilteredMapADC()

static uint16_t readFilteredMapADC ( uint8_t  pin, uint8_t  alpha, uint16_t  prior  )

inlinestatic

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readIAT()

void readIAT

(

void

)

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readMAP()

void readMAP

(

void

)

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readMAPSensor()

static uint16_t readMAPSensor ( uint8_t  pin )

inlinestatic

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readMapSensors()

static map_adc_readings_t readMapSensors ( const map_adc_readings_t &  previousReadings, const config4 &  page4, bool  useEMAP  )

inlinestatic

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readO2()

void readO2

(

void

)

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readO2_2()

void readO2_2

(

void

)

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readTPS()

void readTPS

(

bool

useFilter

)

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reset() [1/3]

static void reset ( const statuses &  current, map_cycle_average_t &  cycle_average, const map_adc_readings_t &  sensorReadings  )

inlinestatic

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reset() [2/3]

static void reset ( const statuses &  current, map_cycle_min_t &  cycle_min, const map_adc_readings_t &  sensorReadings  )

inlinestatic

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reset() [3/3]

static void reset ( map_event_average_t &  eventAverage, const map_adc_readings_t &  sensorReadings  )

inlinestatic

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resetMAPcycleAndEvent()

void resetMAPcycleAndEvent

(

void

)

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setBaroFromMAP()

static void setBaroFromMAP ( void  )

inlinestatic

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setBaroFromSensorReading()

static void setBaroFromSensorReading ( uint16_t  sensorReading )

inlinestatic

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setMAPValuesFromReadings()

static void setMAPValuesFromReadings ( const map_adc_readings_t &  readings, const config2 &  page2, bool  useEMAP, statuses &  current  )

inlinestatic

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storeLastMAPReadings()

static void storeLastMAPReadings ( map_last_read_t &  lastRead, uint16_t  oldMAPValue  )

inlinestatic

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validateFilterMapSensorReading()

TESTABLE_INLINE_STATIC uint16_t validateFilterMapSensorReading	(	uint16_t	reading,
		uint8_t	alpha,
		uint16_t	prior
	)

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vssGetPulseGap()

uint32_t vssGetPulseGap

(

uint8_t

historyIndex

)

Returns the VSS pulse gap for a given history point.

Parameters

historyIndex

The gap number that is wanted. EG: historyIndex = 0 = Latest entry historyIndex = 1 = 2nd entry entry

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vssPulse()

void vssPulse

(

void

)

The ISR function for VSS pulses.

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Variable Documentation

cltCalibration_bins

table2D_u16_u16_32 cltCalibrationTable & cltCalibration_bins

static

cltCalibration_values

uint16_t cltCalibration_values[32]

static

flexCounter

volatile uint8_t flexCounter = 0U

flexPulseWidth

volatile uint32_t flexPulseWidth = 0U

flexStartTime

volatile uint32_t flexStartTime = 0UL

static

iatCalibration_bins

table2D_u16_u16_32 iatCalibrationTable & iatCalibration_bins

static

iatCalibration_values

uint16_t iatCalibration_values[32]

static

mapAlgorithmState

map_algorithm_t mapAlgorithmState

static

o2Calibration_bins

table2D_u16_u8_32 o2CalibrationTable & o2Calibration_bins

static

o2Calibration_values

uint8_t o2Calibration_values[32]

static

statusSensors

uint8_t statusSensors = 0

VALID_MAP_MAX

constexpr uint16_t VALID_MAP_MAX =1022U

staticconstexpr

VALID_MAP_MIN

constexpr uint16_t VALID_MAP_MIN =2U

staticconstexpr

vssIndex

volatile uint8_t vssIndex = 0U

static

vssTimes

volatile uint32_t vssTimes[VSS_SAMPLES] = {0}

static