Add option to disable modem statistics output.

auto_rx/auto_rx.py

@@ -243,7 +243,8 @@ def start_decoder(freq, sonde_type):
             rs92_ephemeris = rs92_ephemeris,
             imet_location = config['station_code'],
             rs41_drift_tweak = config['rs41_drift_tweak'],
-            experimental_decoder = config['experimental_decoders'][sonde_type]
+            experimental_decoder = config['experimental_decoders'][sonde_type],
+            decoder_stats = config['decoder_stats']
             )
         autorx.sdr_list[_device_idx]['task'] = autorx.task_list[freq]['task']
 

auto_rx/autorx/config.py

@@ -104,6 +104,7 @@ def read_auto_rx_config(filename):
 		'payload_id_valid' : 5,
 		'temporary_block_time' : 60,
 		'rs41_drift_tweak': False,
+		'decoder_stats': False,
 		# Rotator Settings
 		'enable_rotator': False,
 		'rotator_update_rate': 30,
@@ -262,6 +263,7 @@ def read_auto_rx_config(filename):
 		try:
 			auto_rx_config['rs41_drift_tweak'] = config.getboolean('advanced', 'drift_tweak')
 			auto_rx_config['decoder_spacing_limit'] = config.getint('advanced', 'decoder_spacing_limit')
+			auto_rx_config['decoder_stats'] = config.getboolean('advanced', 'enable_stats')
 			auto_rx_config['experimental_decoders']['RS41'] = config.getboolean('advanced', 'rs41_experimental')
 			auto_rx_config['experimental_decoders']['RS92'] = config.getboolean('advanced', 'rs92_experimental')
 			auto_rx_config['experimental_decoders']['M10'] = config.getboolean('advanced', 'm10_experimental')
@@ -272,6 +274,7 @@ def read_auto_rx_config(filename):
 			logging.error("Config - Missing new advanced decoder settings, using defaults.")
 			auto_rx_config['rs41_drift_tweak'] = False
 			auto_rx_config['decoder_spacing_limit'] = 15000
+			auto_rx_config['decoder_stats'] = False
 
 
 

auto_rx/autorx/decode.py

@@ -87,6 +87,7 @@ class SondeDecoder(object):
         rs92_ephemeris = None,
         rs41_drift_tweak = False,
         experimental_decoder = False,
+        decoder_stats = False,
 
         imet_location = ""):
         """ Initialise and start a Sonde Decoder.
@@ -141,6 +142,7 @@ class SondeDecoder(object):
         self.rs92_ephemeris = rs92_ephemeris
         self.rs41_drift_tweak = rs41_drift_tweak
         self.experimental_decoder = experimental_decoder
+        self.decoder_stats = decoder_stats
         self.imet_location = imet_location
 
         # iMet ID store. We latch in the first iMet ID we calculate, to avoid issues with iMet-1-RS units
@@ -378,10 +380,16 @@ class SondeDecoder(object):
         else:
             gain_param = ''
 
-
         # Emit demodulator statistics every X modem frames.
         _stats_rate = 10
 
+        if self.decoder_stats:
+            _stats_command_1 = "--stats=%d " % _stats_rate
+            _stats_command_2 = "2>stats_%d.txt" % self.sonde_freq
+        else:
+            _stats_command_1 = ""
+            _stats_command_2 = "2>/dev/null"
+
 
         if self.sonde_type == "RS41":
             # RS41 Decoder command.
@@ -397,7 +405,7 @@ class SondeDecoder(object):
             if self.save_decode_iq:
                 decode_cmd += " tee decode_IQ_%s.bin |" % str(self.device_idx)
 
-            decode_cmd += "./fsk_demod --cs16 -b %d -u %d --stats=%d 2 %d %d - - 2>stats.txt |" % (_lower, _upper, _stats_rate, _sdr_rate, _baud_rate)
+            decode_cmd += "./fsk_demod --cs16 -b %d -u %d %s2 %d %d - - %s |" % (_lower, _upper, _stats_command_1, _sdr_rate, _baud_rate, _stats_command_2)
             decode_cmd += "./rs41mod --ptu --json --bin 2>/dev/null"
 
 
@@ -447,7 +455,7 @@ class SondeDecoder(object):
             if self.save_decode_iq:
                 decode_cmd += " tee decode_IQ_%s.bin |" % str(self.device_idx)
 
-            decode_cmd += "./fsk_demod --cs16 -b %d -u %d --stats=%d 2 %d %d - - 2>stats.txt " % (_lower, _upper, _stats_rate, _sdr_rate, _baud_rate)
+            decode_cmd += "./fsk_demod --cs16 -b %d -u %d %s2 %d %d - - %s |" % (_lower, _upper, _stats_command_1, _sdr_rate, _baud_rate, _stats_command_2)
             decode_cmd += "| python ./test/bit_to_samples.py %d %d | sox -t raw -r %d -e unsigned-integer -b 8 -c 1 - -r %d -b 8 -t wav - 2>/dev/null|" % (_output_rate, _baud_rate, _output_rate, _output_rate)
 
             # Add in tee command to save audio to disk if debugging is enabled.
@@ -475,7 +483,7 @@ class SondeDecoder(object):
             if self.save_decode_iq:
                 decode_cmd += " tee decode_IQ_%s.bin |" % str(self.device_idx)
 
-            decode_cmd += "./fsk_demod --cs16 -b %d -u %d --stats=%d 2 %d %d - - 2>stats.txt " % (_lower, _upper, _stats_rate, _sdr_rate, _baud_rate)
+            decode_cmd += "./fsk_demod --cs16 -b %d -u %d %s2 %d %d - - %s |" % (_lower, _upper, _stats_command_1, _sdr_rate, _baud_rate, _stats_command_2)
             decode_cmd += "| python ./test/bit_to_samples.py %d %d | sox -t raw -r %d -e unsigned-integer -b 8 -c 1 - -r %d -b 8 -t wav - 2>/dev/null|" % (_sdr_rate, _baud_rate, _sdr_rate, _sdr_rate)
 
             # Add in tee command to save audio to disk if debugging is enabled.
@@ -502,7 +510,7 @@ class SondeDecoder(object):
             if self.save_decode_iq:
                 decode_cmd += " tee decode_IQ_%s.bin |" % str(self.device_idx)
 
-            decode_cmd += "./fsk_demod --cs16 -b %d -u %d --stats=%d 2 %d %d - - 2>stats.txt " % (_lower, _upper, _stats_rate, _sdr_rate, _baud_rate)
+            decode_cmd += "./fsk_demod --cs16 -b %d -u %d %s2 %d %d - - %s |" % (_lower, _upper, _stats_command_1, _sdr_rate, _baud_rate, _stats_command_2)
             decode_cmd += "| python ./test/bit_to_samples.py %d %d | sox -t raw -r %d -e unsigned-integer -b 8 -c 1 - -r %d -b 8 -t wav - 2>/dev/null| " % (_sdr_rate, _baud_rate, _sdr_rate, _sdr_rate)
 
             # Add in tee command to save audio to disk if debugging is enabled.

auto_rx/station.cfg.example

@@ -365,7 +365,6 @@ drift_tweak = False
 
 #
 # Experimental Decoders - Use at your own risk!
-# NOTE: These are not yet available in the master/testing branches. Stay tuned!
 #
 # These experimental demod chains use David Rowe's fsk_demod modem.
 # They have much better drift handling performance, and so may be better suited for
@@ -377,6 +376,11 @@ dfm_experimental = False
 m10_experimental = False
 # Note: As iMet sondes use AFSK, using fsk_demod does not give any advantage, so there is no experimental decoder for them.
 
+# Dump FSK Demod statistics to stats_<freq>.txt while the modem is running.
+# This ends up at ~200mb per flight, and is over-written with each new sonde tracked.
+# The test/plot_fsk_demod_stats.py script can plot these files for debugging purposes.
+# Eventually the modem statistics will be integrated into the web GUI.
+enable_stats = False