138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
#ifndef SENSORS_H
|
|
#define SENSORS_H
|
|
|
|
#include "Arduino.h"
|
|
|
|
// The following are alpha values for the ADC filters.
|
|
// Their values are from 0 to 255 with 0 being no filtering and 255 being maximum
|
|
/*
|
|
#define ADCFILTER_TPS 128
|
|
#define ADCFILTER_CLT 180
|
|
#define ADCFILTER_IAT 180
|
|
#define ADCFILTER_O2 128
|
|
#define ADCFILTER_BAT 128
|
|
#define ADCFILTER_MAP 20 //This is only used on Instantaneous MAP readings and is intentionally very weak to allow for faster response
|
|
#define ADCFILTER_BARO 64
|
|
*/
|
|
|
|
#define BARO_MIN 87
|
|
#define BARO_MAX 108
|
|
|
|
#define KNOCK_MODE_DIGITAL 1
|
|
#define KNOCK_MODE_ANALOG 2
|
|
|
|
/*
|
|
#if defined(CORE_AVR)
|
|
#define ANALOG_ISR
|
|
#endif
|
|
*/
|
|
|
|
volatile byte flexCounter = 0;
|
|
volatile byte knockCounter = 0;
|
|
volatile uint16_t knockAngle;
|
|
|
|
unsigned long MAPrunningValue; //Used for tracking either the total of all MAP readings in this cycle (Event average) or the lowest value detected in this cycle (event minimum)
|
|
unsigned long EMAPrunningValue; //As above but for EMAP
|
|
unsigned int MAPcount; //Number of samples taken in the current MAP cycle
|
|
uint32_t MAPcurRev; //Tracks which revolution we're sampling on
|
|
bool auxIsEnabled;
|
|
byte TPSlast; /**< The previous TPS reading */
|
|
unsigned long TPS_time; //The time the TPS sample was taken
|
|
unsigned long TPSlast_time; //The time the previous TPS sample was taken
|
|
byte MAPlast; /**< The previous MAP reading */
|
|
unsigned long MAP_time; //The time the MAP sample was taken
|
|
unsigned long MAPlast_time; //The time the previous MAP sample was taken
|
|
|
|
//These variables are used for tracking the number of running sensors values that appear to be errors. Once a threshold is reached, the sensor reading will go to default value and assume the sensor is faulty
|
|
byte mapErrorCount = 0;
|
|
byte iatErrorCount = 0;
|
|
byte cltErrorCount = 0;
|
|
|
|
/**
|
|
* @brief Simple low pass IIR filter macro for the analog inputs
|
|
* This is effectively implementing the smooth filter from http://playground.arduino.cc/Main/Smooth
|
|
* But removes the use of floats and uses 8 bits of fixed precision.
|
|
*/
|
|
#define ADC_FILTER(input, alpha, prior) (((long)input * (256 - alpha) + ((long)prior * alpha))) >> 8
|
|
|
|
static inline void instanteneousMAPReading() __attribute__((always_inline));
|
|
static inline void readMAP() __attribute__((always_inline));
|
|
void initialiseADC();
|
|
void readTPS();
|
|
void readO2_2();
|
|
void flexPulse();
|
|
uint16_t readAuxanalog(uint8_t analogPin);
|
|
uint16_t readAuxdigital(uint8_t digitalPin);
|
|
void readCLT(bool=true); //Allows the option to override the use of the filter
|
|
void readIAT();
|
|
void readO2();
|
|
void readBat();
|
|
void readBaro();
|
|
|
|
#if defined(ANALOG_ISR)
|
|
volatile int AnChannel[15];
|
|
|
|
//Analog ISR interrupt routine
|
|
/*
|
|
ISR(ADC_vect)
|
|
{
|
|
byte nChannel;
|
|
int result = ADCL | (ADCH << 8);
|
|
|
|
//ADCSRA = 0x6E; // ADC disabled by clearing bit 7(ADEN)
|
|
//BIT_CLEAR(ADCSRA, ADIE);
|
|
|
|
nChannel = ADMUX & 0x07;
|
|
#if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
|
|
if (nChannel==7) { ADMUX = 0x40; }
|
|
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|
|
if(ADCSRB & 0x08) { nChannel += 8; } //8 to 15
|
|
if(nChannel == 15)
|
|
{
|
|
ADMUX = 0x40; //channel 0
|
|
ADCSRB = 0x00; //clear MUX5 bit
|
|
}
|
|
else if (nChannel == 7) //channel 7
|
|
{
|
|
ADMUX = 0x40;
|
|
ADCSRB = 0x08; //Set MUX5 bit
|
|
}
|
|
#endif
|
|
else { ADMUX++; }
|
|
AnChannel[nChannel-1] = result;
|
|
|
|
//BIT_SET(ADCSRA, ADIE);
|
|
//ADCSRA = 0xEE; // ADC Interrupt Flag enabled
|
|
}
|
|
*/
|
|
ISR(ADC_vect)
|
|
{
|
|
byte nChannel = ADMUX & 0x07;
|
|
int result = ADCL | (ADCH << 8);
|
|
|
|
BIT_CLEAR(ADCSRA, ADEN); //Disable ADC for Changing Channel (see chapter 26.5 of datasheet)
|
|
|
|
#if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
|
|
if (nChannel==7) { ADMUX = 0x40; }
|
|
#elif defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
|
|
if( (ADCSRB & 0x08) > 0) { nChannel += 8; } //8 to 15
|
|
if(nChannel == 15)
|
|
{
|
|
ADMUX = 0x40; //channel 0
|
|
ADCSRB = 0x00; //clear MUX5 bit
|
|
}
|
|
else if (nChannel == 7) //channel 7
|
|
{
|
|
ADMUX = 0x40;
|
|
ADCSRB = 0x08; //Set MUX5 bit
|
|
}
|
|
#endif
|
|
else { ADMUX++; }
|
|
AnChannel[nChannel] = result;
|
|
|
|
BIT_SET(ADCSRA, ADEN); //Enable ADC
|
|
}
|
|
#endif
|
|
|
|
#endif // SENSORS_H
|