class Pigpio::BitBangSerialTx

Attributes

tx[R]

Public Class Methods

new(tx,baud=9600,data_bits=8,stop_bits=1) click to toggle source

# File lib/pigpio/bit_bang_serial_tx.rb, line 4
def initialize(tx,baud=9600,data_bits=8,stop_bits=1)
  @tx=tx
  @baud=baud
  @data_bits=data_bits
  @stop_half_bits=(stop_bits*2).round.to_i
end

Public Instance Methods

busy?() click to toggle source

# File lib/pigpio/bit_bang_serial_tx.rb, line 34
def busy?
  IF.wave_tx_busy(@tx.pi)
end

close() click to toggle source

# File lib/pigpio/bit_bang_serial_tx.rb, line 10
def close
  IF.wave_tx_stop(@tx.pi) if busy?
  IF.wave_clear(@tx.pi)
end

stop() click to toggle source

# File lib/pigpio/bit_bang_serial_tx.rb, line 37
def stop
  IF.wave_tx_stop(@tx.pi)
end

sync() click to toggle source

# File lib/pigpio/bit_bang_serial_tx.rb, line 23
def sync
  while busy?
    sleep 0.1
  end
end

write(buf) click to toggle source

# File lib/pigpio/bit_bang_serial_tx.rb, line 14
def write(buf)
  IF.wave_clear(@tx.pi)
  IF.wave_add_new(@tx.pi)
  ret=IF.wave_add_serial(@tx.pi,@tx.gpio,@baud,@data_bits,@stop_half_bits,0,buf)
  return ret if ret < 0
  wid=IF.wave_create(@tx.pi)
  return wid if wid < 0
  IF.wave_send_once(@tx.pi,wid)
end

write_sync(buf) click to toggle source

# File lib/pigpio/bit_bang_serial_tx.rb, line 28
def write_sync(buf)
  ret=write(buf)
  return ret if ret < 0
  sync
  IF.wave_clear(@tx.pi)
end