upm/examples/c/dfrec.c
Noel Eck 324af8fc92 examples: Cleaned up C examples.
This commit cleans up multiple items with the UPM C example source.

    * Switch from usleep and sleep to upm_delay* methods
    * Include a mraa_init and check return value prior to using sensor
    * All example mains now return
    * Added include for mraa.h and upm_utilites.h to all examples
    * Reformatted/removed tabs
    * Updated author line for the examples I wrote

Signed-off-by: Noel Eck <noel.eck@intel.com>
2016-09-19 15:45:22 -07:00

85 lines
2.3 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 "dfrec.h"
#include "upm_utilities.h"
#include "mraa.h"
bool shouldRun = true;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main()
{
{
if (mraa_init() != MRAA_SUCCESS)
perror("Failed to initialize mraa\n");
return -1;
}
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a DFRobot EC sensor on analog pin A0, with a ds18b20
// temperature sensor connected to UART 0, and a device index (for
// the ds1820b uart bus) of 0, and an analog reference voltage of
// 5.0.
dfrec_context sensor = dfrec_init(0, 0, 0, 5.0);
if (!sensor)
{
printf("dfrec_init() failed.\n");
return(1);
}
// Every 2 seconds, update and print values
while (shouldRun)
{
dfrec_update(sensor);
printf("EC = %f ms/cm\n", dfrec_get_ec(sensor));
printf("Volts = %f, Temperature = %f C\n",
dfrec_get_volts(sensor), dfrec_get_temperature(sensor));
printf("\n");
upm_delay(2);
}
//! [Interesting]
printf("Exiting...\n");
dfrec_close(sensor);
return 0;
}