def main ():
parser = OptionParser (option_class=eng_option)
parser.add_option ("-g", "--gain", type="eng_float", default=-1,
help="set front end gain to GAIN [0,1000]")
parser.add_option ("-f", "--freq", type="eng_float", default=-1,
help="set front end center frequency to FREQ")
parser.add_option ("-t", "--type", type="string", default="4937",
help="select eval board type {4937 or 4702}")
parser.add_option ("-p", "--port", type="int", default=0,
help="parallel port eval board is attached to")
(options, args) = parser.parse_args ()
if options.type == "4937":
front_end = gr.microtune_4937_eval_board (options.port)
elif options.type == "4702":
front_end = gr.microtune_4702_eval_board (options.port)
else:
raise RuntimeError, "Invalid board type. Must be either -t 4937 or -t 4702"
if options.gain != -1:
front_end.set_AGC (options.gain)
if options.freq != -1:
if options.freq < 1e6:
options.freq = options.freq * 1e6
actual = front_end.set_RF_freq (options.freq)
print "microtune: actual freq = %s" % (eng_notation.num_to_str (actual),)
def main (args):
nargs = len (args)
if nargs == 1:
freq1 = float (args[0]) * 1e6
freq2 = None
elif nargs == 2:
freq1 = float (args[0]) * 1e6
freq2 = float (args[1]) * 1e6
else:
sys.stderr.write ('usage: fm_demod freq1 [freq2]\n')
sys.exit (1)
# connect to RF front end
rf_front_end = gr.microtune_4937_eval_board ()
if not rf_front_end.board_present_p ():
raise IOError, 'RF front end not found'
# set front end gain
rf_front_end.set_AGC (300)
IF_freq = rf_front_end.get_output_freq ()
IF_freq = 5.75e6
if not freq2: # one station
rf_front_end.set_RF_freq (freq1)
fg = build_graph (IF_freq, None)
else: # two stations
if abs (freq1 - freq2) > 5.5e6:
raise IOError, 'freqs too far apart'
target_freq = (freq1 + freq2) / 2
actual_freq = rf_front_end.set_RF_freq (target_freq)
#actual_freq = target_freq
fg = build_graph (IF_freq + freq1 - actual_freq,
IF_freq + freq2 - actual_freq)
fg.start () # fork thread(s) and return
raw_input ('Press Enter to quit: ')
fg.stop ()
def main(args):
nargs = len(args)
if nargs == 1:
freq1 = float(args[0]) * 1e6
freq2 = None
elif nargs == 2:
freq1 = float(args[0]) * 1e6
freq2 = float(args[1]) * 1e6
else:
sys.stderr.write('usage: fm_demod freq1 [freq2]\n')
sys.exit(1)
# connect to RF front end
rf_front_end = gr.microtune_4937_eval_board()
if not rf_front_end.board_present_p():
raise IOError, 'RF front end not found'
# set front end gain
rf_front_end.set_AGC(300)
IF_freq = rf_front_end.get_output_freq()
IF_freq = 5.75e6
if not freq2: # one station
rf_front_end.set_RF_freq(freq1)
fg = build_graph(IF_freq, None)
else: # two stations
if abs(freq1 - freq2) > 5.5e6:
raise IOError, 'freqs too far apart'
target_freq = (freq1 + freq2) / 2
actual_freq = rf_front_end.set_RF_freq(target_freq)
#actual_freq = target_freq
fg = build_graph(IF_freq + freq1 - actual_freq,
IF_freq + freq2 - actual_freq)
fg.start() # fork thread(s) and return
raw_input('Press Enter to quit: ')
fg.stop()