FM Radio - Python

Discussion in 'Programlama' started by sha., Sep 9, 2009.

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  1. sha.

    sha. ..daha çirkin, daha huysuz

    Code:
    # import radio stuff
    from FMRadio import FMRadio, FMRadioUnavailableError
    
    
    stations = []
    
    
    def scan_cb(freq, is_station):
        """
        Callback for scanning for stations. This callback is called for every
        frequency and tells you if a radio station was found.
        """
    
        print "scanning @ %0.2f MHz" % (freq / 1000.0),
        if (is_station):
            print "STATION FOUND"
            stations.append(freq)
        else:
            print ""
            
            
    
    # open the radio
    try:
        radio = FMRadio()
    except FMRadioUnavailableError:
        # radio not available
        print "Your device doesn't seem to have a FM radio..."
        import sys; sys.exit(1)
        
    # get frequency range; currently only the US/Europe frequency band is supported
    # by the driver
    low, high = radio.get_frequency_range()
    print "Frequency range: %0.2f - %0.2f MHz" % (low / 1000.0, high / 1000.0)
    
    # scan for radio stations
    radio.scan(scan_cb)
    
    # if we have found some stations, start playing
    if (stations):
        radio.set_volume(50)
            
        print "Now listen to the radio."
        for freq in stations:
            print "Tuning in %0.2f MHz." % (freq / 1000.0)
            radio.set_frequency(freq)       ;          
            import time; time.sleep(3)
    
    else:
        print "No radio stations found. The signal is too weak."
    
    # don't forget to shutdown the radio; this will also power down the radio chip
    print "Switching off the radio."
    radio.close()
     

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