FreeEMS  0.2.0-SNAPSHOT-282-g9efc524
Macros
scalerDefines.h File Reference

Global scaling values and macros. More...

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Macros

#define ROUND(FLOATING_POINT_VALUE)   ((FLOATING_POINT_VALUE) + 0.5)
 Ensures that configuration values are properly rounded and not truncated.
#define IGNITION_TIMING_FACTOR   1024
 Temporary ignition timing table scaling factor. Warning, to be changed to 8 bit!
#define TEMPERATURE_K_FACTOR   100
 Scaling factor for temperature fixed point arithmetic.
#define PRESSURE_KPA_FACTOR   100
 Scaling factor for pressure fixed point arithmetic.
#define VOLTAGE_FACTOR   1000
 Scaling factor for Voltage fixed point arithmetic.
#define LAMBDA_FACTOR   32768
 Scaling factor for EGO and Lambda fixed point arithmetic.
#define RPM_FACTOR   2
 Scaling factor for RPM fixed point arithmetic.
#define ANGLE_FACTOR   50U
 Scaling factor for engine angle scheduling fixed point arithmetic. Suffix is necessary otherwise 8 bit is assumed.
#define VE_FACTOR   512
 Scaling factor for Volumetric Efficiency fixed point arithmetic.
#define AFR_FACTOR   1024
 Scaling factor for Air:Fuel Ratio fixed point arithmetic.
#define FUEL_DENSITY_FACTOR   32
 Scaling factor for fuel density (grams per litre) fixed point arithmetic.
#define PW_TICK_FACTOR   1250
 Scaling factor for raw pulse width fixed point arithmetic;.
#define PERCENT_FACTOR   640
 Scaling factor for percentage fixed point arithmetic.
#define CYLINDER_VOLUME_LIMIT   2000
 Cylinder volume, in cc, can be anything less than this.
#define INJECTOR_FLOW_LIMIT   3840
 Injector flow, in cc/min can be anything less than this.
#define WARM_UP_LIMIT   400
 Warm up enrichment percentage, can be anything less than this.
#define TEMPERATURE_C_TO_K_OFFSET   273.15
 Offset for human degrees Celsius configuration items.
#define FUEL_DENSITY_UNIT_FACTOR   1000
 Part of the original speed density mathematics, still in use.
#define KPA(PRESSURE)   (signed long)ROUND((PRESSURE) * (double)PRESSURE_KPA_FACTOR)
#define DEGREES_K(TEMPERATURE)   (unsigned long)ROUND((TEMPERATURE) * (double)TEMPERATURE_K_FACTOR)
#define CC_PER_MINUTE(FLOW_RATE)   (unsigned long)ROUND(((FLOW_RATE) / (double)INJECTOR_FLOW_LIMIT) * 65536)
#define CYLINDER_VOLUME(VOLUME_IN_CC)   (unsigned long)ROUND(((VOLUME_IN_CC) / (double)CYLINDER_VOLUME_LIMIT) * 65536)
#define VOLTS(VOLTAGE)   (unsigned long)ROUND((VOLTAGE) * (double)VOLTAGE_FACTOR)
#define LAMBDA(LAMBDA_VALUE)   (unsigned long)ROUND((LAMBDA_VALUE) * (double)LAMBDA_FACTOR)
#define RPM(ENGINE_SPEED)   (unsigned long)ROUND((ENGINE_SPEED) * (double)RPM_FACTOR)
#define ANGLE(CRANK_DEGREES)   (unsigned long)ROUND((CRANK_DEGREES) * (double)ANGLE_FACTOR)
#define STOICH_AFR(AIR_FUEL_RATIO)   (unsigned long)ROUND((AIR_FUEL_RATIO) * (double)AFR_FACTOR)
#define FUEL_DENSITY(DENSITY)   (unsigned long)ROUND((DENSITY) * (double)FUEL_DENSITY_FACTOR)
#define PW_MS(PW_MILLISECONDS)   (unsigned long)ROUND((PW_MILLISECONDS) * (double)PW_TICK_FACTOR)
#define PERCENT(PERCENTAGE)   (unsigned long)ROUND((PERCENTAGE) * (double)PERCENT_FACTOR)
#define ACCEL_TIME_TOL(PERCENTAGE)   (unsigned long)((100/(100 + (double)PERCENTAGE)) * 1000)
#define DECEL_TIME_TOL(PERCENTAGE)   (unsigned long)(((100 + (double)PERCENTAGE)/100) * 1000)
#define SCI_BAUD_DIVISOR(BAUD)   (unsigned long)ROUND(40000000 / ((double)(BAUD) * 16))
#define IT(TIMING_BTDC)   (unsigned long)ROUND((TIMING_BTDC) * (double)IGNITION_TIMING_FACTOR)
#define VE(VOLUMETRIC_EFFICIENCY)   (unsigned long)ROUND((VOLUMETRIC_EFFICIENCY) * (double)VE_FACTOR)
#define AF(PERCENTAGE)   PERCENT(PERCENTAGE)
#define LR(LAMBDA_RATIO)   LAMBDA(LAMBDA_RATIO)
#define AP(AFR)   LR((double)AFR / 14.7)
#define PC(PERCENTAGE)   PERCENT(PERCENTAGE)
#define C(TEMPERATURE)   DEGREES_C(TEMPERATURE)
#define V(VOLTAGE)   VOLTS(VOLTAGE)
#define W(PERCENTAGE)   (unsigned long)ROUND(((PERCENTAGE) / (double)WARM_UP_LIMIT) * 65536)
#define T(PW_MILLISECONDS)   PW_MS(PW_MILLISECONDS)
#define CC_PER_MINUTE_85(FLOW_RATE)   CC_PER_MINUTE((FLOW_RATE) * (100 / 85.0))
#define DEGREES_C(TEMPERATURE)   DEGREES_K((TEMPERATURE) + TEMPERATURE_C_TO_K_OFFSET)

Detailed Description

Global scaling values and macros.

A single source of internally scaled fixed point numbers.

Definition in file scalerDefines.h.

Macro Definition Documentation

#define ROUND (   FLOATING_POINT_VALUE)    ((FLOATING_POINT_VALUE) + 0.5)

Ensures that configuration values are properly rounded and not truncated.

Definition at line 45 of file scalerDefines.h.

#define IGNITION_TIMING_FACTOR   1024

Temporary ignition timing table scaling factor. Warning, to be changed to 8 bit!

Definition at line 49 of file scalerDefines.h.

#define TEMPERATURE_K_FACTOR   100

Scaling factor for temperature fixed point arithmetic.

Definition at line 50 of file scalerDefines.h.

#define PRESSURE_KPA_FACTOR   100

Scaling factor for pressure fixed point arithmetic.

Definition at line 51 of file scalerDefines.h.

#define VOLTAGE_FACTOR   1000

Scaling factor for Voltage fixed point arithmetic.

Definition at line 52 of file scalerDefines.h.

#define LAMBDA_FACTOR   32768

Scaling factor for EGO and Lambda fixed point arithmetic.

Definition at line 53 of file scalerDefines.h.

#define RPM_FACTOR   2

Scaling factor for RPM fixed point arithmetic.

Definition at line 54 of file scalerDefines.h.

#define ANGLE_FACTOR   50U

Scaling factor for engine angle scheduling fixed point arithmetic. Suffix is necessary otherwise 8 bit is assumed.

Definition at line 55 of file scalerDefines.h.

Referenced by generateDerivedVars(), and PrimaryRPMISR().

#define VE_FACTOR   512

Scaling factor for Volumetric Efficiency fixed point arithmetic.

Definition at line 56 of file scalerDefines.h.

#define AFR_FACTOR   1024

Scaling factor for Air:Fuel Ratio fixed point arithmetic.

Definition at line 57 of file scalerDefines.h.

#define FUEL_DENSITY_FACTOR   32

Scaling factor for fuel density (grams per litre) fixed point arithmetic.

Definition at line 58 of file scalerDefines.h.

#define PW_TICK_FACTOR   1250

Scaling factor for raw pulse width fixed point arithmetic;.

Definition at line 59 of file scalerDefines.h.

#define PERCENT_FACTOR   640

Scaling factor for percentage fixed point arithmetic.

Definition at line 60 of file scalerDefines.h.

#define CYLINDER_VOLUME_LIMIT   2000

Cylinder volume, in cc, can be anything less than this.

Definition at line 61 of file scalerDefines.h.

#define INJECTOR_FLOW_LIMIT   3840

Injector flow, in cc/min can be anything less than this.

Definition at line 62 of file scalerDefines.h.

#define WARM_UP_LIMIT   400

Warm up enrichment percentage, can be anything less than this.

Definition at line 63 of file scalerDefines.h.

#define TEMPERATURE_C_TO_K_OFFSET   273.15

Offset for human degrees Celsius configuration items.

Definition at line 66 of file scalerDefines.h.

#define FUEL_DENSITY_UNIT_FACTOR   1000

Part of the original speed density mathematics, still in use.

Definition at line 67 of file scalerDefines.h.

Referenced by calculateFuelAndIgnition().

#define KPA (   PRESSURE)    (signed long)ROUND((PRESSURE) * (double)PRESSURE_KPA_FACTOR)

Definition at line 74 of file scalerDefines.h.

Referenced by generateDerivedVars().

#define DEGREES_K (   TEMPERATURE)    (unsigned long)ROUND((TEMPERATURE) * (double)TEMPERATURE_K_FACTOR)

Definition at line 75 of file scalerDefines.h.

#define CC_PER_MINUTE (   FLOW_RATE)    (unsigned long)ROUND(((FLOW_RATE) / (double)INJECTOR_FLOW_LIMIT) * 65536)

Definition at line 76 of file scalerDefines.h.

#define CYLINDER_VOLUME (   VOLUME_IN_CC)    (unsigned long)ROUND(((VOLUME_IN_CC) / (double)CYLINDER_VOLUME_LIMIT) * 65536)

Definition at line 77 of file scalerDefines.h.

#define VOLTS (   VOLTAGE)    (unsigned long)ROUND((VOLTAGE) * (double)VOLTAGE_FACTOR)

Definition at line 78 of file scalerDefines.h.

Referenced by generateCoreVars().

#define LAMBDA (   LAMBDA_VALUE)    (unsigned long)ROUND((LAMBDA_VALUE) * (double)LAMBDA_FACTOR)

Definition at line 79 of file scalerDefines.h.

Referenced by calculateFuelAndIgnition().

#define RPM (   ENGINE_SPEED)    (unsigned long)ROUND((ENGINE_SPEED) * (double)RPM_FACTOR)

Definition at line 80 of file scalerDefines.h.

#define ANGLE (   CRANK_DEGREES)    (unsigned long)ROUND((CRANK_DEGREES) * (double)ANGLE_FACTOR)

Definition at line 81 of file scalerDefines.h.

#define STOICH_AFR (   AIR_FUEL_RATIO)    (unsigned long)ROUND((AIR_FUEL_RATIO) * (double)AFR_FACTOR)

Definition at line 82 of file scalerDefines.h.

#define FUEL_DENSITY (   DENSITY)    (unsigned long)ROUND((DENSITY) * (double)FUEL_DENSITY_FACTOR)

Definition at line 83 of file scalerDefines.h.

Referenced by calculateFuelAndIgnition().

#define PW_MS (   PW_MILLISECONDS)    (unsigned long)ROUND((PW_MILLISECONDS) * (double)PW_TICK_FACTOR)

Definition at line 84 of file scalerDefines.h.

#define PERCENT (   PERCENTAGE)    (unsigned long)ROUND((PERCENTAGE) * (double)PERCENT_FACTOR)

Definition at line 85 of file scalerDefines.h.

Referenced by generateCoreVars().

#define ACCEL_TIME_TOL (   PERCENTAGE)    (unsigned long)((100/(100 + (double)PERCENTAGE)) * 1000)

Definition at line 86 of file scalerDefines.h.

#define DECEL_TIME_TOL (   PERCENTAGE)    (unsigned long)(((100 + (double)PERCENTAGE)/100) * 1000)

Definition at line 87 of file scalerDefines.h.

#define SCI_BAUD_DIVISOR (   BAUD)    (unsigned long)ROUND(40000000 / ((double)(BAUD) * 16))

Definition at line 90 of file scalerDefines.h.

#define IT (   TIMING_BTDC)    (unsigned long)ROUND((TIMING_BTDC) * (double)IGNITION_TIMING_FACTOR)

Definition at line 93 of file scalerDefines.h.

#define VE (   VOLUMETRIC_EFFICIENCY)    (unsigned long)ROUND((VOLUMETRIC_EFFICIENCY) * (double)VE_FACTOR)

Definition at line 94 of file scalerDefines.h.

Referenced by calculateFuelAndIgnition().

#define AF (   PERCENTAGE)    PERCENT(PERCENTAGE)

Definition at line 95 of file scalerDefines.h.

#define LR (   LAMBDA_RATIO)    LAMBDA(LAMBDA_RATIO)

Definition at line 96 of file scalerDefines.h.

#define AP (   AFR)    LR((double)AFR / 14.7)

Definition at line 97 of file scalerDefines.h.

#define PC (   PERCENTAGE)    PERCENT(PERCENTAGE)

Definition at line 98 of file scalerDefines.h.

#define C (   TEMPERATURE)    DEGREES_C(TEMPERATURE)

Definition at line 99 of file scalerDefines.h.

#define V (   VOLTAGE)    VOLTS(VOLTAGE)

Definition at line 100 of file scalerDefines.h.

#define W (   PERCENTAGE)    (unsigned long)ROUND(((PERCENTAGE) / (double)WARM_UP_LIMIT) * 65536)

Definition at line 101 of file scalerDefines.h.

#define T (   PW_MILLISECONDS)    PW_MS(PW_MILLISECONDS)

Definition at line 102 of file scalerDefines.h.

#define CC_PER_MINUTE_85 (   FLOW_RATE)    CC_PER_MINUTE((FLOW_RATE) * (100 / 85.0))

Definition at line 105 of file scalerDefines.h.

#define DEGREES_C (   TEMPERATURE)    DEGREES_K((TEMPERATURE) + TEMPERATURE_C_TO_K_OFFSET)

Definition at line 106 of file scalerDefines.h.

Referenced by calculateFuelAndIgnition(), and generateCoreVars().