Class: Itiscold::TTY

Inherits:
Object
  • Object
show all
Includes:
Termios
Defined in:
lib/itiscold.rb

Class Method Summary collapse

Class Method Details

.data_bits(t, val) ⇒ Object 



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

def self.data_bits t, val
  t.cflag &= ~CSIZE               # clear previous values
  t.cflag |= const_get("CS#{val}") # Set the data bits
  t
end

.open(filename, speed, mode) ⇒ Object 



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# File 'lib/itiscold.rb', line 12

def self.open filename, speed, mode
  if mode =~ /^(\d)(\w)(\d)$/
    t.data_bits = $1.to_i
    t.stop_bits = $3.to_i
    t.parity = { 'N' => :none, 'E' => :even, 'O' => :odd }[$2]
    t.speed = speed
    t.read_timeout = 5
    t.reading = true
    t.update!
  end
end

.parity(t, val) ⇒ Object 



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# File 'lib/itiscold.rb', line 40

def self.parity t, val
  case val
  when :none
    t.cflag &= ~PARENB
  when :even
    t.cflag |= PARENB  # Enable parity
    t.cflag &= ~PARODD # Make it not odd
  when :odd
    t.cflag |= PARENB  # Enable parity
    t.cflag |= PARODD  # Make it odd
  else
    raise
  end
  t
end

.read_timeout(t, val) ⇒ Object 



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

def self.read_timeout t, val
  t.cc[VTIME] = val
  t.cc[VMIN] = 0
  t
end

.reading(t) ⇒ Object 



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# File 'lib/itiscold.rb', line 68

def self.reading t
  t.cflag |= CLOCAL | CREAD
  t
end

.speed(t, speed) ⇒ Object 



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

def self.speed t, speed
  t.ispeed = const_get("B#{speed}")
  t.ospeed = const_get("B#{speed}")
  t
end

.stop_bits(t, val) ⇒ Object 



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# File 'lib/itiscold.rb', line 30

def self.stop_bits t, val
  case val
  when 1 then t.cflag &= ~CSTOPB
  when 2 then t.cflag |= CSTOPB
  else
    raise
  end
  t
end