functional

loratransmit/loratransmit.py

@@ -0,0 +1,63 @@
+#!/usr/bin/python3
+
+import sys
+import select
+import argparse
+from RNode import RNodeInterface
+
+serialPort = "/dev/ttyACM0"
+
+def rx(data, rnode):
+	message = data.decode("utf-8")
+	print("Received a packet: "+message)
+	print("RSSI: "+str(rnode.r_stat_rssi)+" dBm")
+	print("SNR:  "+str(rnode.r_stat_snr)+" dB")
+
+def main():
+
+	parser = argparse.ArgumentParser(description="LoRa packet transmitter for RNode hardware.")
+	parser.add_argument("--freq", action="store", metavar="Hz", type=int, default=None, help="Frequency in Hz")
+	parser.add_argument("--bw", action="store", metavar="Hz", type=int, default=125000, help="Bandwidth in Hz")
+	parser.add_argument("--txp", action="store", metavar="dBm", type=int, default=2, help="TX power in dBm")
+	parser.add_argument("--sf", action="store", metavar="factor", type=int, default=7, help="Spreading factor")
+	parser.add_argument("--cr", action="store", metavar="rate", type=int, default=5, help="Coding rate")
+	parser.add_argument("port", nargs="?", default=None, help="Serial port where RNode is attached", type=str)
+	parser.add_argument("payload", nargs="?", default=None, help="The payload to be transmitted", type=str)
+	args = parser.parse_args()
+
+	if not (args.freq and args.bw and args.sf and args.cr):
+		print("Please input startup configuration:")
+
+	if not args.freq:
+		print("Frequency in Hz:\t", end=' ')
+		args.freq = int(input())
+	
+	if not args.payload and not select.select([sys.stdin, ], [], [], 0.0)[0]:
+		print("Please provide a message to be sent")
+		exit()
+
+	try:
+		rnode = RNodeInterface(
+			callback = rx,
+			name = "RandoRNode",
+			port = args.port,
+			frequency = args.freq,
+			bandwidth = args.bw,
+			txpower = args.txp,
+			sf = args.sf,
+			cr = args.cr,
+			loglevel = RNodeInterface.LOG_NOTICE)
+	except Exception as e:
+		print(str(e))
+		exit()
+
+	if not args.payload and select.select([sys.stdin, ], [], [], 0.0)[0]:
+		message = sys.stdin.read()
+	else:
+		message = ' '.join(args.payload)
+	data = message.encode("utf-8")
+	rnode.send(data)
+	print(f"Payload sent: '{message}'\n")
+
+if __name__ == "__main__":
+	main()