hai

int update_flag = read_rtc_register(0x0A) & 0x80;

                while (update_flag)
                {
                        UniqueIRQLock l;
                        tp.seconds = read_rtc_register(0x00);
                        tp.minutes = read_rtc_register(0x02);
                        tp.hours = read_rtc_register(0x04);
                        tp.day_of_month = read_rtc_register(0x07);
                        tp.month = read_rtc_register(0x08);
                        tp.year = read_rtc_register(0x09);
                }

                bool match = true;

                do
                {
                        UniqueIRQLock l;
                        match = check_match(tp.seconds, read_rtc_register(0x00)) &&
                                        check_match(tp.minutes, read_rtc_register(0x02)) &&
                                        check_match(tp.hours, read_rtc_register(0x04)) &&
                                        check_match(tp.day_of_month, read_rtc_register(0x07)) &&
                                        check_match(tp.month, read_rtc_register(0x08)) &&
                                        check_match(tp.year, read_rtc_register(0x09));

                } while (!match);

                // checks 2nd bit of status register
                int binary_flag = read_rtc_register(0x0B) & 0x04;

                if (!binary_flag) {
                        tp.seconds = (tp.seconds & 0x0F) + ((tp.seconds / 16 * 10));
                        tp.minutes = (tp.minutes & 0x0F) + ((tp.minutes / 16 * 10));
                        tp.hours = ((tp.hours & 0x0F) + (((tp.hours & 0x70) / 16 * 10))) | (tp.hours & 0x80);
                        tp.day_of_month = (tp.day_of_month & 0x0F) + ((tp.day_of_month / 16 * 10));
                        tp.month = (tp.month & 0x0F) + ((tp.month / 16 * 10));
                        tp.year = (tp.year & 0x0F) + ((tp.year / 16 * 10));
                }

        }