pt32_utils.rb

require "socket"

class Pt32

  class Status
    attr_reader :temperature, :program, :boiler_on
    def initialize(temperature, program, boiler_on)
      @temperature, @program, @boiler_on = temperature, program, boiler_on
    end
  end

  class NetworkInfo
    attr_reader :temperature, :program, :boiler_on
    def initialize(ip, netmask, gateway)
      @ip, @netmask, @gateway = ip, netmask, gateway
    end
  end

  attr_reader :socket

  def initialize(host, port = 4000)
    @socket = TCPSocket.new host, port
  end

  def status
    arr_request = [ 0x7f, 0xff, 0x0, 0x08, 0x80, 0x02, 0x0, 0x0 ]
    socket.write arr_request.pack("C*")
    response = socket.recv(128)

    temperature = "#{Integer(response.bytes[8])}.#{response.bytes[10]}".to_f
    program = response.bytes[11]
    boiler_on = response.bytes[14] == 64

    Status.new temperature, program, boiler_on
  end

  def set_temp(temp, prg = 1, run = 0x01)
    arr_request = [ 0x0, 0x02, 0x0, 0x03, prg, run, (temp * 2) ]
    socket.write arr_request.pack("C*")
    response = socket.recv(128)
  end

  def get_program(prg)
    arr = [ 0x80, 0x0d, 0x0, 0x1, prg ]
    socket.write arr.pack("C*")
    response = socket.recv(128)

    program = {}
    day = 0
    weekday = 1
    (5..87).step(2).each do |i|
     hour = response.bytes[i]
     temp = response.bytes[i + 1]
     program[weekday] ||= []
     program[weekday] << {
       "hour" => (hour / 8),
       "temp" => (temp / 2)
     }
     day += 1
     if day == 6
       day = 0
       weekday += 1
     end
     weekday = 0 if weekday == 7
    end

    program
  end

  # TODO
  # def set_program(prg, arr_data)
  #
  # end

  def turn_off
    set_temp 0x00, 0x01, 0x00
  end

  def set_manual_mode(temp = 19)
    set_temp temp, 0x01, 0x00
  end

  # run time in minutes
  def run_time
    arr_request = [ 0x0, 0x22, 0x0, 0x1, 0x0 ]
    socket.write arr_request.pack("C*")
    response = socket.recv(128)
    (response.bytes[5] * 60) + response.bytes[6]
  end

  def network_info
    arr_request = [ 0x37, 0x16, 0x0, 0x0 ]
    socket.write arr_request.pack("C*")
    ip, netmask, gw = socket.recv(128)[4..-1].split(",")
    
    NetworkInfo.new ip, netmask, gw
  end

  # TODO send close request
  def close
    socket.close
  end

end