Updates to rfm22b init script, added rfm98w init script.

init_rfm22b.py

@@ -268,7 +268,7 @@ if __name__ == '__main__':
 		tx_freq = tx_freq*1e6
 
 	rfm = RFM22B()
-	rfm.set_tx_power(TXPOW.TXPOW_14DBM | 0x08)
+	rfm.set_tx_power(TXPOW.TXPOW_17DBM | 0x08)
 	rfm.set_frequency(tx_freq)
 	rfm.write_register(REG.GPIO2_CONFIGURATION,0x30) # TX Data In
 	rfm.set_bulk(CONFIGS.REGISTERS,CONFIGS.DIRECT_120K) # Direct Asynchronous mode, ~120KHz tone spacing.

init_rfm98w.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+#
+# 	RFM98W Initialisation for Wenet Telemetry
+#
+#	2016-11-18 Mark Jessop <vk5qi@rfhead.net>
+#
+#	Requires pySX127x:
+#	https://github.com/darksidelemm/pySX127x
+#   Copy the SX127x directory into this directory... 
+#
+#	Uses spidev for comms with a RFM98W module.
+#
+#	Note: As with the RFM22B version, all this script does
+#	is get the RFM98W onto the right frequency, and into the right mode.
+#
+#	SPI: Connected to CE0 (like most of my LoRa shields)
+#	RPi TXD: Connected to RFM98W's DIO2 pin.
+#
+from SX127x.LoRa import *
+from SX127x.hardware_piloragateway import HardwareInterface
+
+import sys
+
+
+if __name__ == '__main__':
+
+    # Attempt to extract a frequency from the first argument:
+    if len(sys.argv)<2:
+        print("Usage: \tpython init_rfm98w.py <TX Frequency in MHz>")
+        print("Example: \tpython init_rfm98w.py 441.200")
+        sys.exit(1)
+
+    try:
+        tx_freq = float(sys.argv[1])
+    except:
+        print("Unable to parse input.")
+
+    if tx_freq>450.0 or tx_freq<430.00:
+        print("Frequency out of 70cm band, using default.")
+        tx_freq = 441.200
+
+    # Set this to 1 if your RFM98W is on CE1
+    hw = HardwareInterface(0)
+
+    # Start talking to the module...
+    lora = LoRa(hw)
+    
+    # Set us into FSK mode, and set continuous mode on
+    lora.set_register(0x01,0x00) # Standby Mode
+    lora.set_register(0x31,0x00) # Set Continuous Mode
+    
+    # Set TX Frequency
+    lora.set_freq(tx_freq)
+
+    # Set Deviation (~70 kHz). Signals ends up looking a bit wider than the RFM22B version.
+    lora.set_register(0x04,0x04)
+    lora.set_register(0x05,0x99)
+  
+    # Set Transmit power to 50mW
+    lora.set_register(0x09,0x8F)
+
+    # Go into TX mode.
+    lora.set_register(0x01,0x02) # .. via FSTX mode (where the transmit frequency actually gets set)
+    lora.set_register(0x01,0x03) # Now we're in TX mode...