mirror of
https://github.com/eclipse/upm.git
synced 2025-03-15 13:07:40 +03:00
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
|
|
* Author: Jon Trulson <jtrulson@ics.com>
|
|
* Copyright (c) 2014-02017 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 <upm_utilities.h>
|
|
#include "wfs.h"
|
|
|
|
int shouldRun = true;
|
|
|
|
void sig_handler(int signo)
|
|
{
|
|
if (signo == SIGINT)
|
|
shouldRun = false;
|
|
}
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
signal(SIGINT, sig_handler);
|
|
|
|
//! [Interesting]
|
|
// Instantiate a Water Flow Sensor on digital pin D2. This must
|
|
// be an interrupt capable pin.
|
|
|
|
wfs_context sensor = wfs_init(2);
|
|
if (!sensor)
|
|
{
|
|
printf("%s: wfs_init() failed\n", __FUNCTION__);
|
|
return 1;
|
|
}
|
|
|
|
// set the flow counter to 0 and start counting
|
|
wfs_clear_flow_counter(sensor);
|
|
if (wfs_start_flow_counter(sensor))
|
|
{
|
|
printf("%s: wfs_start_flow_counter() failed\n", __FUNCTION__);
|
|
wfs_close(sensor);
|
|
return 1;
|
|
}
|
|
|
|
while (shouldRun)
|
|
{
|
|
// we grab these (millis and flowCount) just for display
|
|
// purposes in this example
|
|
uint32_t millis = wfs_get_millis(sensor);
|
|
uint32_t flowCount = wfs_flow_counter(sensor);
|
|
|
|
float fr = wfs_flow_rate(sensor);
|
|
|
|
// output milliseconds passed, flow count, and computed flow rate
|
|
printf("Millis: %8d Flow Count: %5d Flow Rate: %f LPM\n",
|
|
millis, flowCount, fr);
|
|
|
|
// best to gather data for at least one second for reasonable
|
|
// results.
|
|
upm_delay(2);
|
|
}
|
|
|
|
wfs_stop_flow_counter(sensor);
|
|
|
|
printf("Exiting...\n");
|
|
|
|
wfs_close(sensor);
|
|
|
|
//! [Interesting]
|
|
return 0;
|
|
}
|