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21a1860ec2
This requires a new MRAA with UART sendbreak support. Signed-off-by: Jon Trulson <jtrulson@ics.com>
115 lines
3.7 KiB
Python
Executable File
115 lines
3.7 KiB
Python
Executable File
#!/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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# For this example, we will just try transmitting a packet over
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# LoRa. We reset the device to defaults, and we do not make any
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# adjustments to the radio configuration. You will probably want
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# to do so for a real life application.
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# The first thing to do is to suspend the LoRaWAN stack on the device.
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sensor.macPause();
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# the default radio watchdog timer is set for 15 seconds, so we
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# will send a packet every 10 seconds. In reality, local
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# restrictions limit the amount of time on the air, so in a real
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# implementation, you would not want to send packets that
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# frequently.
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count = 0;
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while (True):
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output = "Ping " + str(count)
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count += 1
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# All payloads must be hex encoded
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payload = sensor.toHex(output);
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print("Transmitting a packet, data: '", end='')
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print(output, end='')
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print("' -> hex: '", end='')
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print(payload, end='')
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print("'")
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rv = sensor.radioTx(payload);
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if (rv == sensorObj.RN2903_RESPONSE_OK):
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print("Transmit successful.")
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else:
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print("Transmit failed with code " + str(rv))
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print()
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time.sleep(10)
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if __name__ == '__main__':
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main()
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