TroykaMQ/MQ8.cpp

#include "MQ8.h"

MQ8::MQ8(uint8_t pin)
  : BaseMQ(pin) {
}

MQ8::MQ8(uint8_t pin, uint8_t pinHeater)
  : BaseMQ(pin, pinHeater) {
}

unsigned long MQ8::readHydrogen() {
  return readPpm(-1.52, 10.49);
}

int MQ8::readPpm(float a, float b) {
  float ratio = readRs()/_ro;
  return pow(M_E, (log(ratio)-b)/a);
}