upm/examples/java/RN2903_P2P_TX_Example.java

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/*
* Author: Jon Trulson <jtrulson@ics.com>
* 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.
*/
import upm_rn2903.*;
public class RN2903_P2P_TX_Example
{
private static String defaultDev = "/dev/ttyUSB0";
public static void main(String[] args) throws InterruptedException
{
// ! [Interesting]
if (args.length > 0)
defaultDev = args[0];
System.out.println("Using device " + defaultDev);
// Instantiate a RN2903 sensor on defaultDev at 57600 baud.
RN2903 sensor = new RN2903(defaultDev,
javaupm_rn2903.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.
//
// RN2903 sensor = new RN2903(defaultDev,
// upm_rn2903.javaupm_rn2903.RN2903_DEFAULT_BAUDRATE);
// enable debugging
// sensor.setDebug(true);
// get version
if (sensor.command("sys get ver")
!= RN2903_RESPONSE_T.RN2903_RESPONSE_OK)
{
System.out.println("Failed to retrieve device version string");
System.exit(1);
}
System.out.println("Firmware version: " + sensor.getResponse());
System.out.println("Hardware EUI: " + sensor.getHardwareEUI());
// For this example, we will just try transmitting a packet over
// LoRa. 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();
// the default radio watchdog timer is set for 15 seconds, so we
// will send a packet every 10 seconds. In reality, local
// restrictions limit the amount of time on the air, so in a real
// implementation, you would not want to send packets that
// frequently.
Integer count = 0;
while (true)
{
String output = "Ping " + count.toString();
count++;
// All payloads must be hex encoded
String payload = sensor.toHex(output);
System.out.println("Transmitting a packet, data: '"
+ output
+ "' -> hex: '"
+ payload
+ "'");
RN2903_RESPONSE_T rv = sensor.radioTx(payload);
if (rv == RN2903_RESPONSE_T.RN2903_RESPONSE_OK)
System.out.println("Transmit successful.");
else
System.out.println("Transmit failed with code "
+ rv.toString());
System.out.println();
Thread.sleep(10000);
}
// ! [Interesting]
}
}