crankMaths.h

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#ifndef CRANKMATHS_H
#define CRANKMATHS_H
 
#include "maths.h"
#include "board_definition.h"
 
static constexpr uint32_t MICROS_PER_DEG_1_RPM = UDIV_ROUND_CLOSEST(MICROS_PER_MIN, 360UL, uint32_t);
 
static constexpr uint16_t MAX_RPM = 18000U;
 
static constexpr uint16_t MIN_RPM = (uint16_t)UDIV_ROUND_UP(MICROS_PER_DEG_1_RPM, (uint32_t)UINT16_MAX/16UL, uint32_t);
 
static constexpr uint16_t MIN_REVOLUTION_TIME = MICROS_PER_MIN/MAX_RPM;
 
static constexpr uint32_t MAX_REVOLUTION_TIME = MICROS_PER_MIN/MIN_RPM;
 
static inline uint16_t RpmFromRevolutionTimeUs(uint32_t revolutionTime) {
    if (revolutionTime==0U) { return 0U; }
    return (uint16_t)clamp(fast_div_closest(MICROS_PER_MIN, revolutionTime), (uint32_t)0UL, (uint32_t)MAX_RPM);
}
 
extern int16_t CRANK_ANGLE_MAX_IGN; 
extern int16_t CRANK_ANGLE_MAX_INJ; 
 
static inline int16_t ignitionLimits(int16_t angle) {
    return nudge((int16_t)0, (int16_t)CRANK_ANGLE_MAX_IGN, angle);
}
 
struct angle_converter_factors_t {
  uint32_t microsPerDegree;
  uint16_t degreesPerMicro;
};
 
angle_converter_factors_t calculateAngleConverterFactors(uint32_t revolutionTime) noexcept;
 
void applyAngleConverterFactors(const angle_converter_factors_t &factors) noexcept;
 
void setAngleConverterRevolutionTime(uint32_t revolutionTime) noexcept;
 
uint32_t angleToTime(uint16_t angle) noexcept;
 
COMPARE_TYPE angleToTimerTicks(uint16_t angle) noexcept;
 
uint16_t timeToAngle(uint32_t time) noexcept;
 
#endif