#!/usr/bin/python # Author: Jon Trulson # Copyright (c) 2017 Intel Corporation. # # The MIT License # # 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_rn2903 as sensorObj def main(): ## Exit handlers ## # This function 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) defaultDev = "/dev/ttyUSB0" if (len(sys.argv) > 1): defaultDev = sys.argv[1] print("Using device", defaultDev) # Instantiate a RN2903 sensor on defaultDev at 57600 baud. sensor = sensorObj.RN2903(defaultDev, sensorObj.RN2903_DEFAULT_BAUDRATE) # To use an internal UART understood by MRAA, use the following # to inititialize rather than the above, which by default uses a # tty path. # # sensor = sensorObj.RN2903(0, # sensorObj.RN2903_DEFAULT_BAUDRATE) # enable debugging # sensor.setDebug(True) # get version if (sensor.command("sys get ver")): print("Failed to retrieve device version string") sys.exit(1) print("Firmware version: " + sensor.getResponse()) print("Hardware EUI: " + sensor.getHardwareEUI()) # For this example, we will just try to receive a packet # transmitted by the p2p-tx rn2903 example. We reset the # device to defaults, and we do not make any adjustments to the # radio configuration. You will probably want to do so for a # real life application. # The first thing to do is to suspend the LoRaWAN stack on the device. sensor.macPause(); # We will use continuous mode (window_size 0), though the default # radio watch dog timer will expire every 15 seconds. We will # just loop here. while (True): print("Waiting for packet...") rv = sensor.radioRx(0); if (rv): print("radioRx() failed with code " + str(rv)) else: resp = sensor.getResponse(); payload = sensor.getRadioRxPayload(); if (not len(payload)): print("Got response: '", end='') print(resp, end="") print("'") else: print("Got payload: '", end='') print(sensor.fromHex(payload), end='') print("'") print() if __name__ == '__main__': main()