upm/examples/c/bh1750.c
Mihai Tudor Panu 89d5de43e0 license: update to SPDX style license text throughout
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
2020-03-05 15:13:36 -08:00

64 lines
1.3 KiB
C

/*
* Author: Jon Trulson <jtrulson@ics.com>
* Copyright (c) 2016 Intel Corporation.
*
* This program and the accompanying materials are made available under the
* terms of the The MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
*/
#include <unistd.h>
#include <signal.h>
#include "bh1750.h"
#include "upm_utilities.h"
bool shouldRun = true;
void sig_handler(int signo)
{
if (signo == SIGINT)
shouldRun = false;
}
int main()
{
signal(SIGINT, sig_handler);
//! [Interesting]
// Instantiate a BH1750 sensor on default I2C bus (0), using the
// default I2C address (0x23), and setting the mode to highest
// resolution, lowest power mode.
bh1750_context sensor = bh1750_init(BH1750_DEFAULT_I2C_BUS,
BH1750_DEFAULT_I2C_ADDR,
BH1750_OPMODE_H2_ONCE);
if (!sensor)
{
printf("bh1750_init() failed.\n");
return 1;
}
// Every second, sample the BH1750 and output the measured lux value
while (shouldRun)
{
float lux;
bh1750_get_lux(sensor, &lux);
printf("Detected Light Level (lux): %f\n", lux);
upm_delay(1);
}
//! [Interesting]
printf("Exiting\n");
bh1750_close(sensor);
return 0;
}