#!/usr/bin/python # Author: Jon Trulson # Copyright (c) 2015 Intel Corporation. # # Permission is hereby granted, free of charge, to any person obtaining # a copy of this software and associated documentation files (the # "Software"), to deal in the Software without restriction, including # without limitation the rights to use, copy, modify, merge, publish, # distribute, sublicense, and/or sell copies of the Software, and to # permit persons to whom the Software is furnished to do so, subject to # the following conditions: # # The above copyright notice and this permission notice shall be # included in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. from __future__ import print_function import time, sys, signal, atexit from upm import pyupm_sx1276 as sensorObj def main(): # Instantiate an SX1276 using default parameters sensor = sensorObj.SX1276() ## Exit handlers ## # This stops python from printing a stacktrace when you hit control-C def SIGINTHandler(signum, frame): raise SystemExit # This function lets you run code on exit def exitHandler(): print("Exiting") sys.exit(0) # Register exit handlers atexit.register(exitHandler) signal.signal(signal.SIGINT, SIGINTHandler) print("Specify an argument to go into receive mode. Default is transmit") # 915Mhz sensor.setChannel(915000000) # LORA configuration (rx and tx must be configured the same): # Tx output power = 14 dBm # LORA bandwidth = 125000 (can also be 250K and 500K) # LORA spreading factor = 7 # LORA coding rate = 1 (4/5) # LORA preamble len = 8 # LORA symbol timeout = 5 # LORA fixed payload = false # LORA IQ inversion = false # LORA (rx) continuous Rx mode = true sensor.setTxConfig(sensor.MODEM_LORA, 14, 0, 125000, 7, 1, 8, False, True, False, 0, False) sensor.setRxConfig(sensor.MODEM_LORA, 125000, 7, 1, 0, 8, 5, False, 0, True, False, 0, False, True) count = 0 while True: if (len(sys.argv) > 1): # receive mode print("Attempting to receive...") rv = sensor.setRx(3000) if (rv): print("setRx returned ", rv) else: print("Received Buffer: ", sensor.getRxBufferStr()); # go back to sleep when done sensor.setSleep() time.sleep(.25) else: # transmit mode buffer = "Ping " + str(count) count += 1 print("Sending..." + buffer) sensor.sendStr(buffer, 3000) sensor.setSleep(); time.sleep(1); if __name__ == '__main__': main()