epea ndir-07 reader

ndir07.rb

require 'serialport'
require 'json'

class EpeaNdir07
  def initialize
    @dev = "/dev/tty.usbserial-12210"
  end

  def get_ppm
    sp = SerialPort.new(@dev, 115200)
    while line = sp.gets
      begin
        ppm = JSON.parse(line)['CO2']
        yield(ppm) if ppm && ppm > 400
      rescue
        p $!
      end
    end
  ensure
    sp.close if sp
  end
end

if __FILE__ == $0
  e = EpeaNdir07.new
  e.get_ppm do |ppm|
    puts ppm
    if ppm < 500
      pp Time.now
      system("osascript reminder.scpt")
      exit
    end
  end
end

reminder.scpt

tell application "Reminders"
	set notification to make new reminder in list "notify"
	set name of notification to "換気終了" 
	set body of notification to "換気できたよ"
	set remind me date of notification to (current date) + (0.25 * minutes)
end tell