upm  1.7.1
Sensor/Actuator repository for libmraa (v2.0.0)
Data Structures | Functions | Typedefs
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API Description

/*
* 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 <stdio.h>
#include <signal.h>
#include <ppd42ns.h>
int shouldRun = true;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main()
{
signal(SIGINT, sig_handler);
// Instantiate a dust sensor on GPIO pin D8
printf("This program will give readings every 30 seconds until "
"you stop it\n");
while (shouldRun)
{
data = ppd42ns_get_data(dust);
printf("Low pulse occupancy: %d\n", data.lowPulseOccupancy);
printf("Ratio: %f\n", data.ratio);
printf("Concentration: %f\n\n", data.concentration);
}
printf("Exiting...\n");
return 0;
}

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Data Structures

struct  _ppd42ns_context
 

Functions

ppd42ns_context ppd42ns_init (int pin)
 
void ppd42ns_close (ppd42ns_context dev)
 
ppd42ns_dust_data ppd42ns_get_data (const ppd42ns_context dev)
 

Typedefs

typedef struct _ppd42ns_contextppd42ns_context
 

Function Documentation

ppd42ns_context ppd42ns_init ( int  pin)

PPD42NS initialization

Parameters
pinDigital pin to use
Returns
ppd42ns device context

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void ppd42ns_close ( ppd42ns_context  dev)

PPD42NS close

Parameters
devDevice context.

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ppd42ns_dust_data ppd42ns_get_data ( const ppd42ns_context  dev)

Prints dust concentration

Parameters
devDevice context.
Returns
ppd42ns_dust_data Contains data from the dust sensor

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Typedef Documentation

Device context