DFRobot_SGP40

python get_raw_value.py

    '''
      @brief start equipment
      @param duration:int Set to Warm-up time
      @return equipment condition. 0: succeed  1: failed 
    '''
    begin(self,duration = 10)

    '''
      @brief Set temperature and humidity
      @param relative_humidity:float Set to relative_humidity
      @param temperature_c:float Set to temperature
    '''
    set_envparams(relative_humidity,temperature_c)

    '''
      @brief Get raw data
      @param duration:int Set to Warm-up time
      @return collect result. (-1 collect failed)  (>0 the collection value)
    '''
    measure_raw(self)

    '''
      @brief Measure VOC index after humidity compensation
      @n VOC index can indicate the quality of the air directly. The larger the value, the worse the air quality.
      @n   0-100,no need to ventilate, purify
      @n   100-200,no need to ventilate, purify
      @n   200-400,ventilate, purify
      @n   00-500,ventilate, purify intensely
      @param duration:int Set to Warm-up time
      @return The VOC index measured, ranged from 0 to 500
    '''
    get_voc_index(self)