abfall/src/ntp_client.cpp

#include "ntp_client.h"

#include <ctime>

#include "hardware/rtc.h"

#include "pico/util/datetime.h"

// Called by lwip sntp in order to set the time
void set_system_time(u32_t sec) {
    time_t epoch = sec;
    struct tm *utc = gmtime(&epoch);
    datetime_t datetime;
    datetime.year = utc->tm_year + 1900;
    datetime.month = utc->tm_mon + 1;
    datetime.day = utc->tm_mday;
    datetime.hour = utc->tm_hour;
    datetime.min = utc->tm_min;
    datetime.sec = utc->tm_sec;
    datetime.dotw = utc->tm_wday;

    bool success = rtc_set_datetime(&datetime);

#ifdef DEBUG
    if (success) {
        printf("RTC successfully set.\n");
    }
#endif
}

void NtpClient::setDateTime() {
    sntp_setoperatingmode(SNTP_OPMODE_POLL);
    sntp_init();

    // It takes some time for the system to set the RTC. Wait, until the RTC runs properly.
    while (!rtc_running()) {
        sleep_ms(500);
    }
}