Module: Radio::Rig::SSB

Included in:
Radio::Rig
Defined in:
lib/radio/rig/ssb.rb

Instance Method Summary collapse

Instance Method Details

#af=(output) ⇒ Object 



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# File 'lib/radio/rig/ssb.rb', line 27

def af= output
  if output and !iq?
    raise 'requires i/q signal'
  end
  old_af_thread = false
  @ssb_semaphore.synchronize do
    deregister @af_queue if @af_queue
    @af_queue = nil
    old_rate = 0
    if @af
      @af.stop
      old_af_thread = @af_thread
      old_af_thread.kill if old_af_thread
    end
    if @af = output
      @bfo_filter = bfo_mixer
      @af_filter = af_generate_filter
      @agc = Filter.new :agc => true
      @iq = Filter.new :iq => true
      @mix = mixmix
    
      #TODO need a nicer pattern to force JIT compile
      @bfo_filter.call(NArray.scomplex(1)) {}
      @af_filter.call(NArray.sfloat(1)) {}
      @agc.call(NArray.sfloat(1)) {}
      @iq.call(NArray.scomplex(1)) {}
    
      register @af_queue = Queue.new
      @af_thread = Thread.new &method(:af_thread)
    end
  end
  old_af_thread.join if old_af_thread
end

#initialize ⇒ Object 



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# File 'lib/radio/rig/ssb.rb', line 22

def initialize
  @ssb_semaphore = Mutex.new
  super
end

#set_lsb ⇒ Object 



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# File 'lib/radio/rig/ssb.rb', line 68

def set_lsb
  @ssb_semaphore.synchronize do
    if @bfo_filter
      @ssb_mode = :lsb
      @bfo_filter.decimation_fir = @lsb_coef 
      set_mixers
    end
  end
end

#set_usb ⇒ Object 



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# File 'lib/radio/rig/ssb.rb', line 78

def set_usb
  @ssb_semaphore.synchronize do
    if @bfo_filter
      @ssb_mode = :usb
      @bfo_filter.decimation_fir = @usb_coef
      set_mixers
    end
  end
end

#tune=(freq) ⇒ Object 



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# File 'lib/radio/rig/ssb.rb', line 61

def tune= freq
  @ssb_semaphore.synchronize do
    @freq = freq
    set_mixers
  end
end