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130 lines
4.8 KiB
Python
130 lines
4.8 KiB
Python
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#!/usr/bin/python
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# Author: Jon Trulson <jtrulson@ics.com>
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# Copyright (c) 2017 Intel Corporation.
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#
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# The MIT License
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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from __future__ import print_function
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import time, sys, signal, atexit
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from upm import pyupm_rn2903 as sensorObj
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def main():
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## Exit handlers ##
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# This function stops python from printing a stacktrace when you
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# hit control-C
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def SIGINTHandler(signum, frame):
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raise SystemExit
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# This function lets you run code on exit
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def exitHandler():
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print("Exiting")
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sys.exit(0)
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# Register exit handlers
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atexit.register(exitHandler)
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signal.signal(signal.SIGINT, SIGINTHandler)
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defaultDev = "/dev/ttyUSB0"
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if (len(sys.argv) > 1):
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defaultDev = sys.argv[1]
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print("Using device", defaultDev)
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# Instantiate a RN2903 sensor on defaultDev at 57600 baud.
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sensor = sensorObj.RN2903(defaultDev,
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sensorObj.RN2903_DEFAULT_BAUDRATE)
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# To use an internal UART understood by MRAA, use the following
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# to inititialize rather than the above, which by default uses a
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# tty path.
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#
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# sensor = sensorObj.RN2903(0,
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# sensorObj.RN2903_DEFAULT_BAUDRATE)
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# enable debugging
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# sensor.setDebug(True)
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# get version
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if (sensor.command("sys get ver")):
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print("Failed to retrieve device version string")
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sys.exit(1)
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print("Firmware version: " + sensor.getResponse())
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print("Hardware EUI: " + sensor.getHardwareEUI())
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# we can support two types of join, OTAA and ABP. Each requires
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# that certain parameters be set first. We will only attempt ABP
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# joining with this example since it's the only one that can
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# succeed without actual configuration. In both cases, if you
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# are actually attempting to join a real LoRaWAN network, you
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# must change the parameters below to match the network you are
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# attempting to join.
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# For OTAA, you need to supply valid Device EUI, Application EUI,
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# and Application key:
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#
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# sensor.setDeviceEUI("0011223344556677")
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# sensor.setApplicationEUI("0011223344556677")
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# sensor.setApplicationKey("01234567012345670123456701234567")
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#
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# rv = sensor.join(RN2903_JOIN_TYPE_OTAA)
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# A successful join will return RN2903_JOIN_STATUS_ACCEPTED (0).
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# Try an ABP join. Note, these parameters are made up. For a
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# real network, you will want to use the correct values
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# obviously. For an ABP join, you need to supply the Device
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# Address, Network Session Key, and the Application Session Key.
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sensor.setDeviceAddr("00112233")
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sensor.setNetworkSessionKey("00112233001122330011223300112233")
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sensor.setApplicationSessionKey("00112233001122330011223300112233")
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rv = sensor.join(sensorObj.RN2903_JOIN_TYPE_ABP)
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if (rv == sensorObj.RN2903_JOIN_STATUS_ACCEPTED):
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print("Join successful.")
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# All transmit payloads must be hex encoded strings, so
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# pretend we have a temperature sensor that gave us a value
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# of 25.6 C, and we want to transmit it.
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faketemp = "25.6"
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print("Transmitting a packet...")
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trv = sensor.macTx(sensorObj.RN2903_MAC_MSG_TYPE_UNCONFIRMED,
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1, # port number
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sensor.toHex(faketemp))
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if (trv == sensorObj.RN2903_MAC_TX_STATUS_TX_OK):
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print("Transmit successful.")
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else:
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# check to see if we got a downlink packet
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if (trv == sensor.Obj.RN2903_MAC_TX_STATUS_RX_RECEIVED):
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print("Transmit successful, downlink packet received:", end=' ')
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print(sensor.getResponse())
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else:
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print("Transmit failed with code " + str(trv))
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else:
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print("Join failed with code " + str(rv))
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if __name__ == '__main__':
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main()
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