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diff --git a/.oldds32rtc.h b/.oldds32rtc.h
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+// Arduino DS3232RTC Library
+// https://github.com/JChristensen/DS3232RTC
+// Copyright (C) 2018 by Jack Christensen and licensed under
+// GNU GPL v3.0, https://www.gnu.org/licenses/gpl.html
+//
+// Arduino library for the Maxim Integrated DS3232 and DS3231
+// Real-Time Clocks.
+// Requires PJRC's improved version of the Arduino Time Library,
+// https://playground.arduino.cc/Code/Time
+// https://github.com/PaulStoffregen/Time
+//
+// For AVR architecture, a DS3232RTC object named RTC is instantiated
+// by the library and I2C initialization occurs in the constructor;
+// this is for backwards compatibility.
+// For other architectures, the user needs to instantiate a DS3232RTC
+// object and optionally initialize the I2C bus by calling
+// DS3232RTC::begin(). The constructor has an optional bool parameter
+// to indicate whether I2C initialization should occur in the
+// constructor; this parameter defaults to true if not given.
+
+#ifndef DS3232RTC_H_INCLUDED
+#define DS3232RTC_H_INCLUDED
+
+#include <Arduino.h>
+#include <TimeLib.h>        // https://github.com/PaulStoffregen/Time
+
+// Alarm masks
+enum ALARM_TYPES_t {
+    ALM1_EVERY_SECOND = 0x0F,
+    ALM1_MATCH_SECONDS = 0x0E,
+    ALM1_MATCH_MINUTES = 0x0C,     // match minutes *and* seconds
+    ALM1_MATCH_HOURS = 0x08,       // match hours *and* minutes, seconds
+    ALM1_MATCH_DATE = 0x00,        // match date *and* hours, minutes, seconds
+    ALM1_MATCH_DAY = 0x10,         // match day *and* hours, minutes, seconds
+    ALM2_EVERY_MINUTE = 0x8E,
+    ALM2_MATCH_MINUTES = 0x8C,     // match minutes
+    ALM2_MATCH_HOURS = 0x88,       // match hours *and* minutes
+    ALM2_MATCH_DATE = 0x80,        // match date *and* hours, minutes
+    ALM2_MATCH_DAY = 0x90,         // match day *and* hours, minutes
+};
+
+// Square-wave output frequency (TS2, RS1 bits)
+enum SQWAVE_FREQS_t {
+    SQWAVE_1_HZ,
+    SQWAVE_1024_HZ,
+    SQWAVE_4096_HZ,
+    SQWAVE_8192_HZ,
+    SQWAVE_NONE
+};
+
+#define ALARM_1 1                  // constants for alarm functions
+#define ALARM_2 2
+
+class DS3232RTC
+{
+    public:
+        DS3232RTC(bool initI2C = true);
+        void begin();
+        static time_t get();       // static needed to work with setSyncProvider() in the Time library
+        byte set(time_t t);
+        static byte read(tmElements_t &tm);
+        byte write(tmElements_t &tm);
+        byte writeRTC(byte addr, byte *values, byte nBytes);
+        byte writeRTC(byte addr, byte value);
+        byte readRTC(byte addr, byte *values, byte nBytes);
+        byte readRTC(byte addr);
+        void setAlarm(ALARM_TYPES_t alarmType, byte seconds, byte minutes, byte hours, byte daydate);
+        void setAlarm(ALARM_TYPES_t alarmType, byte minutes, byte hours, byte daydate);
+        void alarmInterrupt(byte alarmNumber, bool alarmEnabled);
+        bool alarm(byte alarmNumber);
+        void squareWave(SQWAVE_FREQS_t freq);
+        bool oscStopped(bool clearOSF = false);
+        int16_t temperature();
+        static byte errCode;
+
+    private:
+        uint8_t dec2bcd(uint8_t n);
+        static uint8_t bcd2dec(uint8_t n);
+};
+
+#ifdef ARDUINO_ARCH_AVR
+extern DS3232RTC RTC;
+#endif
+
+#ifndef _BV
+#define _BV(bit) (1 << (bit))
+#endif
+
+#ifndef BUFFER_LENGTH       // a horrible and limiting kludge for samd (arduino zero)
+#define BUFFER_LENGTH 32
+#endif
+
+#endif