upm/examples/c/otp538u.c
Jon Trulson 1630ebfca4 otp538u: C implementation; FTI; C++ wraps C
Signed-off-by: Jon Trulson <jtrulson@ics.com>
2016-11-07 13:53:43 -07:00

82 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 <otp538u.h>
bool shouldRun = true;
// analog voltage, usually 3.3 or 5.0
#define OTP538U_AREF 5.0
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a OTP538U on analog pins A0 and A1
// A0 is used for the Ambient Temperature and A1 is used for the
// Object temperature.
otp538u_context temps = otp538u_init(0, 1, OTP538U_AREF);
// enable debugging if you would like
// otp538u_set_debug(temps, true);
// Output ambient and object temperatures
while (shouldRun)
{
float ambient = 0, object = 0;
if (otp538u_get_ambient_temperature(temps, &ambient))
printf("otp538u_get_ambient_temperature() failed\n");
else if (otp538u_get_object_temperature(temps, &object))
printf("otp538u_get_object_temperature() failed\n");
else
printf("Ambient temp: %f C, Object temp: %f C\n",
ambient, object);
printf("\n");
upm_delay(1);
}
printf("Exiting\n");
otp538u_close(temps);
//! [Interesting]
return 0;
}