80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
#ifndef SENSORS_H
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#define SENSORS_H
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#include "globals.h"
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// The following are alpha values for the ADC filters.
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// Their values are from 0 to 240, with 0 being no filtering and 240 being maximum
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#define ADCFILTER_TPS_DEFAULT 50
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#define ADCFILTER_CLT_DEFAULT 180
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#define ADCFILTER_IAT_DEFAULT 180
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#define ADCFILTER_O2_DEFAULT 128
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#define ADCFILTER_BAT_DEFAULT 128
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#define ADCFILTER_MAP_DEFAULT 20 //This is only used on Instantaneous MAP readings and is intentionally very weak to allow for faster response
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#define ADCFILTER_BARO_DEFAULT 64
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#define ADCFILTER_PSI_DEFAULT 150 //not currently configurable at runtime, used for misc pressure sensors, oil, fuel, etc.
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#define FILTER_FLEX_DEFAULT 75
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#define BARO_MIN 65
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#define BARO_MAX 108
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#define KNOCK_MODE_DIGITAL 1
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#define KNOCK_MODE_ANALOG 2
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#define VSS_GEAR_HYSTERESIS 10
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#define VSS_SAMPLES 4 //Must be a power of 2 and smaller than 255
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#define TPS_READ_FREQUENCY 30 //ONLY VALID VALUES ARE 15 or 30!!!
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extern volatile byte flexCounter;
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extern volatile unsigned long flexStartTime;
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extern volatile unsigned long flexPulseWidth;
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#if defined(CORE_AVR)
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#define READ_FLEX() ((*flex_pin_port & flex_pin_mask) ? true : false)
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#else
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#define READ_FLEX() digitalRead(pinFlex)
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#endif
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#define ADMUX_DEFAULT_CONFIG 0x40 //AVCC reference, ADC0 input, right adjusted, ADC enabled
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extern volatile byte knockCounter;
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extern unsigned int MAPcount; //Number of samples taken in the current MAP cycle
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extern uint32_t MAPcurRev; //Tracks which revolution we're sampling on
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extern bool auxIsEnabled;
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extern uint16_t MAPlast; /**< The previous MAP reading */
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extern unsigned long MAP_time; //The time the MAP sample was taken
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extern unsigned long MAPlast_time; //The time the previous MAP sample was taken
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/**
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* @brief Simple low pass IIR filter macro for the analog inputs
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* This is effectively implementing the smooth filter from playground.arduino.cc/Main/Smooth
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* But removes the use of floats and uses 8 bits of fixed precision.
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*/
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#define ADC_FILTER(input, alpha, prior) (((long)input * (256 - alpha) + ((long)prior * alpha))) >> 8
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void initialiseADC(void);
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void readTPS(bool useFilter=true); //Allows the option to override the use of the filter
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void readO2_2(void);
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void flexPulse(void);
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uint32_t vssGetPulseGap(byte toothHistoryIndex);
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void vssPulse(void);
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uint16_t getSpeed(void);
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byte getGear(void);
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byte getFuelPressure(void);
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byte getOilPressure(void);
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uint16_t readAuxanalog(uint8_t analogPin);
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uint16_t readAuxdigital(uint8_t digitalPin);
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void readCLT(bool useFilter=true); //Allows the option to override the use of the filter
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void readIAT(void);
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void readO2(void);
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void readBat(void);
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void readBaro(void);
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void readMAP(void);
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void instanteneousMAPReading(void);
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#endif // SENSORS_H
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