Class: Duino

Inherits:
Object
  • Object
show all
Defined in:
lib/duino.rb

Instance Method Summary collapse

Constructor Details

#initialize(port, baudrate = 115200) ⇒ Duino

Returns a new instance of Duino.



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# File 'lib/duino.rb', line 4

def initialize(port, baudrate=115200)
  data_bits = 8
  stop_bits = 1
  parity = SerialPort::NONE

  @serial = SerialPort.new(port, baudrate, data_bits, stop_bits, parity)
  @serial.read_timeout = 2
  @serial.sync
  @port         = port
  @output_pins  = []
  @input_pins   = []
  @pin_states   = {}

  puts "Initialized"
end

Instance Method Details

#analog_read(pin) ⇒ Object 



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# File 'lib/duino.rb', line 88

def analog_read(pin)
  send_data(4)
  send_pin(pin)
  get_data()
end

#analog_write(pin, value) ⇒ Object 



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# File 'lib/duino.rb', line 81

def analog_write(pin, value)
  send_data(3)
  send_pin(pin)
  send_data((value / 16).to_s(16))
  send_data((value % 16).to_s(16))
end

#close ⇒ Object 



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# File 'lib/duino.rb', line 101

def close
  send_data(5)
  @serial.dtr = (0)
  @serial.close
  puts "Connection closed"
end

#digital_input(*pin_list) ⇒ Object 



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# File 'lib/duino.rb', line 37

def digital_input(*pin_list)
  send_data(pin_list.length)
  if(pin_list.class == Array)
    @input_pins = pin_list
    pin_list.each do |pin|
      send_pin(pin)
    end
  else
    raise ArgumentError, "Arguments must be a list of pin numbers"
  end
  return pin_list
end

#digital_output(*pin_list) ⇒ Object 



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# File 'lib/duino.rb', line 24

def digital_output(*pin_list)
send_data(pin_list.length)
  if(pin_list.class == Array)
    @output_pins = pin_list
    pin_list.each do |pin|
      send_pin(pin)
    end
  else
    raise ArgumentError, "Arguments must be a list of pin numbers"
  end
  return pin_list
end

#get_state(pin) ⇒ Object

Returns true if high and false if low.



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# File 'lib/duino.rb', line 66

def get_state(pin) # Returns true if high and false if low.
  send_data(2)
  send_pin(pin)

  while true
    rval = @serial.getbyte()
    if(rval == 0)
     return("Low")
    end
    if(rval == 1)
     return("High")
    end
  end
end

#save_state(pin, state) ⇒ Object 



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# File 'lib/duino.rb', line 62

def save_state(pin, state)
  @pin_states[pin.to_s] = state
end

#set_high(pin) ⇒ Object 



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# File 'lib/duino.rb', line 50

def set_high(pin)
  save_state(pin, true)
  send_data(1)
  send_pin(pin)
end

#set_low(pin) ⇒ Object 



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# File 'lib/duino.rb', line 56

def set_low(pin)
  save_state(pin, false)
  send_data(0)
  send_pin(pin)
end

#to_s ⇒ Object 



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# File 'lib/duino.rb', line 20

def to_s
  "Arduino is on port #{@port} at #{@serial.baud} baudrate"
end

#turn_off ⇒ Object 



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# File 'lib/duino.rb', line 94

def turn_off
  @output_pins.each do |pin|
    set_low(pin)
  end
  puts "All pins set to low"
end