main.c
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/*
* Copyright (C) 2015 Lari Lehtomäki
*
* 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 for low-level Real Time clock drivers
*
* This test will initialize the real-time timer and trigger an alarm printing
* 'Hello' every 10 seconds
*
* @author Lari Lehtomäki <lari@lehtomaki.fi>
*
* @}
*/
#include <stdio.h>
#include <time.h>
#include "periph_conf.h"
#include "periph/rtc.h"
#include "xtimer.h"
#define PERIOD (2U)
#define REPEAT (4U)
#define TM_YEAR_OFFSET (1900)
static unsigned cnt = 0;
static void print_time(const char *label, const struct tm *time)
{
printf("%s %04d-%02d-%02d %02d:%02d:%02d\n", label,
time->tm_year + TM_YEAR_OFFSET,
time->tm_mon + 1,
time->tm_mday,
time->tm_hour,
time->tm_min,
time->tm_sec);
}
static void inc_secs(struct tm *time, unsigned val)
{
time->tm_sec += val;
if (time->tm_sec >= 60) {
time->tm_sec -= 60;
}
}
static void cb(void *arg)
{
(void)arg;
puts("Alarm!");
if (++cnt < REPEAT) {
struct tm time;
rtc_get_alarm(&time);
inc_secs(&time, PERIOD);
rtc_set_alarm(&time, cb, NULL);
}
}
int main(void)
{
struct tm time = {
.tm_year = 2011 - TM_YEAR_OFFSET, /* years are counted from 1900 */
.tm_mon = 11, /* 0 = January, 11 = December */
.tm_mday = 13,
.tm_hour = 14,
.tm_min = 15,
.tm_sec = 15
};
puts("\nRIOT RTC low-level driver test");
printf("This test will display 'Alarm!' every %u seconds for %u times\n",
PERIOD, REPEAT);
/* initialize RTC */
rtc_init();
/* set RTC */
print_time(" Setting clock to ", &time);
rtc_set_time(&time);
/* read RTC to confirm value */
rtc_get_time(&time);
print_time("Clock value is now ", &time);
/* set initial alarm */
inc_secs(&time, PERIOD);
print_time(" Setting alarm to ", &time);
rtc_set_alarm(&time, cb, NULL);
/* verify alarm */
rtc_get_alarm(&time);
print_time(" Alarm is set to ", &time);
puts("");
return 0;
}