upm/examples/c/guvas12d.c
Jon Trulson 3eb3a0b825 guvas12d: C implementation; FTI; C++ wraps C
Signed-off-by: Jon Trulson <jtrulson@ics.com>
2016-11-04 12:52:33 -06:00

90 lines
2.4 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 <stdio.h>
#include <signal.h>
#include <upm_utilities.h>
#include <guvas12d.h>
bool shouldRun = true;
// analog voltage, usually 3.3 or 5.0
#define GUVAS12D_AREF 5.0
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
// This was tested with the Grove UV Sensor module.
// It has a sensing range from between 240-370nm. It's strongest
// response is around 320-360nm.
// Instantiate a GUVAS12D on analog pin A0
guvas12d_context uv = guvas12d_init(0, GUVAS12D_AREF);
if (!uv)
{
printf("guvas12d_init() failed\n");
return 1;
}
// The higher the voltage the more intense the UV radiation.
while (shouldRun)
{
float volts = 0;
float intensity = 0;
if (guvas12d_get_volts(uv, &volts))
{
printf("guvas12d_get_volts() failed\n");
return 1;
}
if (guvas12d_get_intensity(uv, &intensity))
{
printf("guvas12d_get_intensity() failed\n");
return 1;
}
printf("Volts: %f, Intensity %f mW/m^2\n", volts, intensity);
upm_delay(1);
}
printf("Exiting\n");
guvas12d_close(uv);
//! [Interesting]
return 0;
}