fan_driver.h

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#pragma once
 
#include <Arduino.h>
 
struct FanDriverConfig {
  uint8_t pwmPin;                
  uint32_t pwmFrequencyHz;       
  uint8_t pwmResolutionBits;     
  uint8_t startBoostPwmPercent;  
  uint32_t startBoostDurationMs; 
};
 
constexpr FanDriverConfig kDefaultFanDriverConfig = {
    25,
    25000,
    8,
    40,
    2000,
};
 
class FanDriver {
 public:
  explicit FanDriver(const FanDriverConfig& config = kDefaultFanDriverConfig);
 
  bool begin();
 
  void setCommandedPwmPercent(uint8_t pwmPercent, uint32_t nowMs);
 
  void update(uint32_t nowMs);
 
  uint8_t commandedPwmPercent() const;
 
  uint8_t appliedPwmPercent() const;
 
  bool isStartBoostActive() const;
 
 private:
  void applyPwmPercent(uint8_t pwmPercent);
 
  FanDriverConfig config_;
  uint8_t commandedPwmPercent_;
  uint8_t appliedPwmPercent_;
  bool startBoostActive_;
  uint32_t startBoostUntilMs_;
  bool initialized_;
};