upm/examples/c/nmea_gps.c
Jon Trulson e7c80217c2 C examples: move mraa_init() calls out of C examples and into C drivers.
Signed-off-by: Jon Trulson <jtrulson@ics.com>
2016-09-28 17:34:42 -06:00

82 lines
2.2 KiB
C

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2016 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 <signal.h>
#include "nmea_gps.h"
#include "upm_utilities.h"
bool shouldRun = true;
const size_t bufferLength = 256;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a NMEA_GPS sensor on uart 0 at 9600 baud with enable
// pin on D3. If you do not need an enable pin, you can specify -1.
nmea_gps_context sensor = nmea_gps_init(0, 9600, 3);
if (!sensor)
{
printf("nmea_gps_init() failed.\n");
return 1;
}
char buffer[bufferLength];
int rv = 0;
// loop, dumping NMEA data out as fast as it comes in
while (shouldRun && nmea_gps_data_available(sensor, 5000))
{
if ((rv = nmea_gps_read(sensor, buffer, bufferLength)) >= 0)
{
int i;
for (i=0; i<rv; i++)
printf("%c", buffer[i]);
}
}
if (shouldRun)
printf("Timed out\n");
//! [Interesting]
printf("Exiting\n");
nmea_gps_close(sensor);
return 0;
}