main.c
1.16 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
/*
* Copyright (C) 2016 Freie Universität Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup tests
* @{
*
* @file
* @brief Test application for the BH1750FVI ambient light sensor driver
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
*
* @}
*/
#include <stdio.h>
#include "xtimer.h"
#include "bh1750fvi.h"
#include "bh1750fvi_params.h"
#define RATE (200LU * MS_IN_USEC) /* 200ms */
int main(void)
{
int res;
bh1750fvi_t dev;
xtimer_ticks32_t last = xtimer_now();
puts("BH1750FVI ambient light sensor test\n");
/* initialize the device */
res = bh1750fvi_init(&dev, (bh1750fvi_params_t *)(&bh1750fvi_params));
if (res != BH1750FVI_OK) {
puts("error: unable to initialize sensor [I2C initialization error]");
return 1;
}
/* periodically sample the sensor */
while(1) {
uint16_t val = bh1750fvi_sample(&dev);
printf("value: %5i lux\n", (int)val);
xtimer_periodic_wakeup(&last, RATE);
}
return 0;
}