upm/examples/c/rn2903-p2p-tx.c

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/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2017 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.
*/
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include "rn2903.h"
#include "upm_utilities.h"
#include "upm_platform.h"
bool shouldRun = true;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
#if defined(UPM_PLATFORM_ZEPHYR) && !defined(CONFIG_STDOUT_CONSOLE)
# define printf printk
#endif
int main(int argc, char **argv)
{
//! [Interesting]
char *defaultDev = "/dev/ttyUSB0";
if (argc > 1)
defaultDev = argv[1];
printf("Using device: %s\n", defaultDev);
// Instantiate a RN2903 sensor on defaultDev at 57600 baud.
#if defined(UPM_PLATFORM_ZEPHYR)
rn2903_context sensor = rn2903_init(0, RN2903_DEFAULT_BAUDRATE);
#else
rn2903_context sensor = rn2903_init_tty(defaultDev,
RN2903_DEFAULT_BAUDRATE);
#endif
// 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_context sensor = rn2903_init(0, RN2903_DEFAULT_BAUDRATE);
if (!sensor)
{
printf("rn2903_init_tty() failed.\n");
return 1;
}
// enable debugging
// rn2903_set_debug(sensor, true);
// get version
if (rn2903_command(sensor, "sys get ver"))
{
printf("Failed to retrieve device version string\n");
rn2903_close(sensor);
return 1;
}
printf("Firmware version: %s\n", rn2903_get_response(sensor));
printf("Hardware EUI: %s\n", rn2903_get_hardware_eui(sensor));
// 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.
if (rn2903_mac_pause(sensor))
{
printf("Failed to pause the LoRaWAN stack\n");
rn2903_close(sensor);
return 1;
}
// 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.
int count = 0;
while (shouldRun)
{
char pingbuf[32] = {};
snprintf(pingbuf, 32, "Ping %d", count++);
// All payloads must be hex encoded
const char *payload = rn2903_to_hex(sensor, pingbuf, strlen(pingbuf));
printf("Transmitting a packet, data: '%s' -> hex: '%s'\n",
pingbuf, payload);
RN2903_RESPONSE_T rv;
rv = rn2903_radio_tx(sensor, payload);
if (rv == RN2903_RESPONSE_OK)
printf("Transmit successful.\n");
else
printf("Transmit failed with code %d.\n", rv);
printf("\n");
upm_delay(10);
}
printf("Exiting\n");
rn2903_close(sensor);
//! [Interesting]
return 0;
}