Get current date
Display current date in format yyy/mm/dd
void
get_current_date() {
time_t raw_time;
struct tm* time_info;
time(&raw_time);
time_info = localtime(&raw_time);
LOGI("Current date: %d/%s%d/%d", time_info->tm_year+1900, time_info->tm_mon<10? "0" : "", time_info->tm_mon+1, time_info->tm_mday);
}