Updates to sample and baud rate settings, due to rpi firmware update.

start_rx.sh

@@ -24,9 +24,9 @@ python rx_gui.py &
 # rtl_biast -b 1 
 
 # Start up the receive chain. 
-rtl_sdr -s 923096 -f 440980000 -g 35 - | csdr convert_u8_f | \
+rtl_sdr -s 921416 -f 440980000 -g 35 - | csdr convert_u8_f | \
 csdr bandpass_fir_fft_cc 0.05 0.45 0.05 | csdr realpart_cf | \
 csdr gain_ff 0.5 | csdr convert_f_s16 | \
-./fsk_demod 2XS 8 923096 115387 - - S 2> >(python fskdemodgui.py --wide) | \
+./fsk_demod 2XS 8 921416 115177 - - S 2> >(python fskdemodgui.py --wide) | \
 ./drs232_ldpc - -  -vv | \
 python rx_ssdv.py --partialupdate 16

start_tx.sh

@@ -17,7 +17,7 @@ cd ~/wenet/tx/
 #Uncomment to initialise a RFM22B
 #python init_rfm22b.py $TXFREQ
 # Uncomment for use with a RFM98W
-python init_rfm98w.py $TXFREQ
+python init_rfm98w.py --frequency $TXFREQ
 
 # Start the main TX Script.
 # Note, this assumes there is a uBlox GPS available at /dev/ttyACM0

tx/PacketTX.py

@@ -5,14 +5,10 @@
 # Frames packets (preamble, unique word, checksum)
 # and transmits them out of a serial port.
 #
-# RPI UART Calibration. Measured on a Rpi A+.
-# YMMV with other RPi models.
 #
-#	 9600 -> 9600.1536
-#	19200 -> 19200.307
-#	38400 -> 38339.148
-#	57600 -> 57693.417
-#  115200 -> 115386.834
+#  NOTE: The RPi UART isn't spot on with its baud rate.
+#  Recent firmware updates have improved the accuracy slightly, but it's still
+#  a bit off. Consequently, 115200 baud is actually around 115177 baud.
 #
 # Mark Jessop <vk5qi@rfhead.net>
 #