9a804572a3
This sample app set and read date/time from the Real-Time Clock. Signed-off-by: Muhammad Waleed Badar <walid.badar@gmail.com>
67 lines
1.2 KiB
C
67 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2024, Muhammad Waleed Badar
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <zephyr/kernel.h>
|
|
#include <zephyr/device.h>
|
|
#include <zephyr/drivers/rtc.h>
|
|
#include <zephyr/sys/util.h>
|
|
|
|
const struct device *const rtc = DEVICE_DT_GET(DT_ALIAS(rtc));
|
|
|
|
static int set_date_time(const struct device *rtc)
|
|
{
|
|
int ret = 0;
|
|
struct rtc_time tm = {
|
|
.tm_year = 2024 - 1900,
|
|
.tm_mon = 11 - 1,
|
|
.tm_mday = 17,
|
|
.tm_hour = 4,
|
|
.tm_min = 19,
|
|
.tm_sec = 0,
|
|
};
|
|
|
|
ret = rtc_set_time(rtc, &tm);
|
|
if (ret < 0) {
|
|
printk("Cannot write date time: %d\n", ret);
|
|
return ret;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int get_date_time(const struct device *rtc)
|
|
{
|
|
int ret = 0;
|
|
struct rtc_time tm;
|
|
|
|
ret = rtc_get_time(rtc, &tm);
|
|
if (ret < 0) {
|
|
printk("Cannot read date time: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
printk("RTC date and time: %04d-%02d-%02d %02d:%02d:%02d\n", tm.tm_year + 1900,
|
|
tm.tm_mon + 1, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
/* Check if the RTC is ready */
|
|
if (!device_is_ready(rtc)) {
|
|
printk("Device is not ready\n");
|
|
return 0;
|
|
}
|
|
|
|
set_date_time(rtc);
|
|
|
|
/* Continuously read the current date and time from the RTC */
|
|
while (get_date_time(rtc) == 0) {
|
|
k_sleep(K_MSEC(1000));
|
|
};
|
|
return 0;
|
|
}
|