/*
 * ESP8266 RTC Memory Access library
 *
 * copyright: Jannik Beyerstedt | http://jannikbeyerstedt.de | code@jannikbeyerstedt.de
 * license: http://www.gnu.org/licenses/gpl-3.0.txt GPLv3 License
 */

#include "rtc-helpers.hpp"

#include <ESP.h>

#define RTC_MEMCHECK_MAGIC 0xAABBCCDD  // cheap input validation by using a magic constant

bool rtcMemoryLoad(rtcStore_t* rtcStore_ptr) {
  if (ESP.rtcUserMemoryRead(0, (uint32_t*)rtcStore_ptr, sizeof(*rtcStore_ptr))) {
    return (RTC_MEMCHECK_MAGIC == rtcStore_ptr->magic);
  }
  return false;
}

bool rtcMemoryStore(rtcStore_t* rtcStore_ptr) {
  rtcStore_ptr->magic = RTC_MEMCHECK_MAGIC;
  if (ESP.rtcUserMemoryWrite(0, (uint32_t*)rtcStore_ptr, sizeof(*rtcStore_ptr))) {
    return true;
  }
  return false;
}