1 files changed, 375 insertions, 0 deletions
diff --git a/.oldds32rtc.cpp b/.oldds32rtc.cpp
new file mode 100644
index 0000000..0d519a9
--- /dev/null
+++ b/.oldds32rtc.cpp
@@ -0,0 +1,375 @@
+// 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.
+
+// define release-independent I2C functions
+#if defined(__AVR_ATtiny44__) || defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny45__) || defined(__AVR_ATtiny85__)
+#include <TinyWireM.h>
+#define i2cBegin TinyWireM.begin
+#define i2cBeginTransmission TinyWireM.beginTransmission
+#define i2cEndTransmission TinyWireM.endTransmission
+#define i2cRequestFrom TinyWireM.requestFrom
+#define i2cRead TinyWireM.receive
+#define i2cWrite TinyWireM.send
+#elif ARDUINO >= 100
+#include <Wire.h>
+#define i2cBegin Wire.begin
+#define i2cBeginTransmission Wire.beginTransmission
+#define i2cEndTransmission Wire.endTransmission
+#define i2cRequestFrom Wire.requestFrom
+#define i2cRead Wire.read
+#define i2cWrite Wire.write
+#else
+#include <Wire.h>
+#define i2cBegin Wire.begin
+#define i2cBeginTransmission Wire.beginTransmission
+#define i2cEndTransmission Wire.endTransmission
+#define i2cRequestFrom Wire.requestFrom
+#define i2cRead Wire.receive
+#define i2cWrite Wire.send
+#endif
+
+#include <TimeLib.h>        //https://github.com/PaulStoffregen/Time
+#include <DS3232RTC.h>
+
+// DS3232 I2C Address
+#define RTC_ADDR 0x68
+
+// DS3232 Register Addresses
+#define RTC_SECONDS 0x00
+#define RTC_MINUTES 0x01
+#define RTC_HOURS 0x02
+#define RTC_DAY 0x03
+#define RTC_DATE 0x04
+#define RTC_MONTH 0x05
+#define RTC_YEAR 0x06
+#define ALM1_SECONDS 0x07
+#define ALM1_MINUTES 0x08
+#define ALM1_HOURS 0x09
+#define ALM1_DAYDATE 0x0A
+#define ALM2_MINUTES 0x0B
+#define ALM2_HOURS 0x0C
+#define ALM2_DAYDATE 0x0D
+#define RTC_CONTROL 0x0E
+#define RTC_STATUS 0x0F
+#define RTC_AGING 0x10
+#define RTC_TEMP_MSB 0x11
+#define RTC_TEMP_LSB 0x12
+#define SRAM_START_ADDR 0x14    // first SRAM address
+#define SRAM_SIZE 236           // number of bytes of SRAM
+
+// Alarm mask bits
+#define A1M1 7
+#define A1M2 7
+#define A1M3 7
+#define A1M4 7
+#define A2M2 7
+#define A2M3 7
+#define A2M4 7
+
+// Control register bits
+#define EOSC 7
+#define BBSQW 6
+#define CONV 5
+#define RS2 4
+#define RS1 3
+#define INTCN 2
+#define A2IE 1
+#define A1IE 0
+
+// Status register bits
+#define OSF 7
+#define BB32KHZ 6
+#define CRATE1 5
+#define CRATE0 4
+#define EN32KHZ 3
+#define BSY 2
+#define A2F 1
+#define A1F 0
+
+// Other
+#define DS1307_CH 7                // for DS1307 compatibility, Clock Halt bit in Seconds register
+#define HR1224 6                   // Hours register 12 or 24 hour mode (24 hour mode==0)
+#define CENTURY 7                  // Century bit in Month register
+#define DYDT 6                     // Day/Date flag bit in alarm Day/Date registers
+
+byte DS3232RTC::errCode;           // for debug
+
+// Constructor. Initializes the I2C bus by default, but better
+// practice is to pass false in the constructor and call
+// the begin() function in the setup code.
+DS3232RTC::DS3232RTC(bool initI2C)
+{
+    if (initI2C) i2cBegin();
+}
+
+// Initialize the I2C bus.
+void DS3232RTC::begin()
+{
+    i2cBegin();
+}
+
+// Read the current time from the RTC and return it as a time_t
+// value. Returns a zero value if an I2C error occurred (e.g. RTC
+// not present).
+time_t DS3232RTC::get()
+{
+    tmElements_t tm;
+
+    if ( read(tm) ) return 0;
+    return( makeTime(tm) );
+}
+
+// Set the RTC to the given time_t value and clear the
+// oscillator stop flag (OSF) in the Control/Status register.
+// Returns the I2C status (zero if successful).
+byte DS3232RTC::set(time_t t)
+{
+    tmElements_t tm;
+
+    breakTime(t, tm);
+    return ( write(tm) );
+}
+
+// Read the current time from the RTC and return it in a tmElements_t
+// structure. Returns the I2C status (zero if successful).
+byte DS3232RTC::read(tmElements_t &tm)
+{
+    i2cBeginTransmission(RTC_ADDR);
+    i2cWrite((uint8_t)RTC_SECONDS);
+    if ( byte e = i2cEndTransmission() ) { errCode = e; return e; }
+    // request 7 bytes (secs, min, hr, dow, date, mth, yr)
+    i2cRequestFrom(RTC_ADDR, tmNbrFields);
+    tm.Second = bcd2dec(i2cRead() & ~_BV(DS1307_CH));
+    tm.Minute = bcd2dec(i2cRead());
+    tm.Hour = bcd2dec(i2cRead() & ~_BV(HR1224));    // assumes 24hr clock
+    tm.Wday = i2cRead();
+    tm.Day = bcd2dec(i2cRead());
+    tm.Month = bcd2dec(i2cRead() & ~_BV(CENTURY));  // don't use the Century bit
+    tm.Year = y2kYearToTm(bcd2dec(i2cRead()));
+    return 0;
+}
+
+// Set the RTC time from a tmElements_t structure and clear the
+// oscillator stop flag (OSF) in the Control/Status register.
+// Returns the I2C status (zero if successful).
+byte DS3232RTC::write(tmElements_t &tm)
+{
+    i2cBeginTransmission(RTC_ADDR);
+    i2cWrite((uint8_t)RTC_SECONDS);
+    i2cWrite(dec2bcd(tm.Second));
+    i2cWrite(dec2bcd(tm.Minute));
+    i2cWrite(dec2bcd(tm.Hour));         // sets 24 hour format (Bit 6 == 0)
+    i2cWrite(tm.Wday);
+    i2cWrite(dec2bcd(tm.Day));
+    i2cWrite(dec2bcd(tm.Month));
+    i2cWrite(dec2bcd(tmYearToY2k(tm.Year)));
+    byte ret = i2cEndTransmission();
+    uint8_t s = readRTC(RTC_STATUS);        // read the status register
+    writeRTC( RTC_STATUS, s & ~_BV(OSF) );  // clear the Oscillator Stop Flag
+    return ret;
+}
+
+// Write multiple bytes to RTC RAM.
+// Valid address range is 0x00 - 0xFF, no checking.
+// Number of bytes (nBytes) must be between 1 and 31 (Wire library
+// limitation).
+// Returns the I2C status (zero if successful).
+byte DS3232RTC::writeRTC(byte addr, byte *values, byte nBytes)
+{
+    i2cBeginTransmission(RTC_ADDR);
+    i2cWrite(addr);
+    for (byte i=0; i<nBytes; i++) i2cWrite(values[i]);
+    return i2cEndTransmission();
+}
+
+// Write a single byte to RTC RAM.
+// Valid address range is 0x00 - 0xFF, no checking.
+// Returns the I2C status (zero if successful).
+byte DS3232RTC::writeRTC(byte addr, byte value)
+{
+    return ( writeRTC(addr, &value, 1) );
+}
+
+// Read multiple bytes from RTC RAM.
+// Valid address range is 0x00 - 0xFF, no checking.
+// Number of bytes (nBytes) must be between 1 and 32 (Wire library
+// limitation).
+// Returns the I2C status (zero if successful).
+byte DS3232RTC::readRTC(byte addr, byte *values, byte nBytes)
+{
+    i2cBeginTransmission(RTC_ADDR);
+    i2cWrite(addr);
+    if ( byte e = i2cEndTransmission() ) return e;
+    i2cRequestFrom( (uint8_t)RTC_ADDR, nBytes );
+    for (byte i=0; i<nBytes; i++) values[i] = i2cRead();
+    return 0;
+}
+
+// Read a single byte from RTC RAM.
+// Valid address range is 0x00 - 0xFF, no checking.
+byte DS3232RTC::readRTC(byte addr)
+{
+    byte b;
+
+    readRTC(addr, &b, 1);
+    return b;
+}
+
+// Set an alarm time. Sets the alarm registers only.  To cause the
+// INT pin to be asserted on alarm match, use alarmInterrupt().
+// This method can set either Alarm 1 or Alarm 2, depending on the
+// value of alarmType (use a value from the ALARM_TYPES_t enumeration).
+// When setting Alarm 2, the seconds value must be supplied but is
+// ignored, recommend using zero. (Alarm 2 has no seconds register.)
+void DS3232RTC::setAlarm(ALARM_TYPES_t alarmType, byte seconds, byte minutes, byte hours, byte daydate)
+{
+    uint8_t addr;
+
+    seconds = dec2bcd(seconds);
+    minutes = dec2bcd(minutes);
+    hours = dec2bcd(hours);
+    daydate = dec2bcd(daydate);
+    if (alarmType & 0x01) seconds |= _BV(A1M1);
+    if (alarmType & 0x02) minutes |= _BV(A1M2);
+    if (alarmType & 0x04) hours |= _BV(A1M3);
+    if (alarmType & 0x10) daydate |= _BV(DYDT);
+    if (alarmType & 0x08) daydate |= _BV(A1M4);
+
+    if ( !(alarmType & 0x80) )  // alarm 1
+    {
+        addr = ALM1_SECONDS;
+        writeRTC(addr++, seconds);
+    }
+    else
+    {
+        addr = ALM2_MINUTES;
+    }
+    writeRTC(addr++, minutes);
+    writeRTC(addr++, hours);
+    writeRTC(addr++, daydate);
+}
+
+// Set an alarm time. Sets the alarm registers only. To cause the
+// INT pin to be asserted on alarm match, use alarmInterrupt().
+// This method can set either Alarm 1 or Alarm 2, depending on the
+// value of alarmType (use a value from the ALARM_TYPES_t enumeration).
+// However, when using this method to set Alarm 1, the seconds value
+// is set to zero. (Alarm 2 has no seconds register.)
+void DS3232RTC::setAlarm(ALARM_TYPES_t alarmType, byte minutes, byte hours, byte daydate)
+{
+    setAlarm(alarmType, 0, minutes, hours, daydate);
+}
+
+// Enable or disable an alarm "interrupt" which asserts the INT pin
+// on the RTC.
+void DS3232RTC::alarmInterrupt(byte alarmNumber, bool interruptEnabled)
+{
+    uint8_t controlReg, mask;
+
+    controlReg = readRTC(RTC_CONTROL);
+    mask = _BV(A1IE) << (alarmNumber - 1);
+    if (interruptEnabled)
+        controlReg |= mask;
+    else
+        controlReg &= ~mask;
+    writeRTC(RTC_CONTROL, controlReg);
+}
+
+// Returns true or false depending on whether the given alarm has been
+// triggered, and resets the alarm flag bit.
+bool DS3232RTC::alarm(byte alarmNumber)
+{
+    uint8_t statusReg, mask;
+
+    statusReg = readRTC(RTC_STATUS);
+    mask = _BV(A1F) << (alarmNumber - 1);
+    if (statusReg & mask)
+    {
+        statusReg &= ~mask;
+        writeRTC(RTC_STATUS, statusReg);
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+// Enable or disable the square wave output.
+// Use a value from the SQWAVE_FREQS_t enumeration for the parameter.
+void DS3232RTC::squareWave(SQWAVE_FREQS_t freq)
+{
+    uint8_t controlReg;
+
+    controlReg = readRTC(RTC_CONTROL);
+    if (freq >= SQWAVE_NONE)
+    {
+        controlReg |= _BV(INTCN);
+    }
+    else
+    {
+        controlReg = (controlReg & 0xE3) | (freq << RS1);
+    }
+    writeRTC(RTC_CONTROL, controlReg);
+}
+
+// Returns the value of the oscillator stop flag (OSF) bit in the
+// control/status register which indicates that the oscillator is or    *
+// was stopped, and that the timekeeping data may be invalid.
+// Optionally clears the OSF bit depending on the argument passed.
+bool DS3232RTC::oscStopped(bool clearOSF)
+{
+    uint8_t s = readRTC(RTC_STATUS);    // read the status register
+    bool ret = s & _BV(OSF);            // isolate the osc stop flag to return to caller
+    if (ret && clearOSF)                // clear OSF if it's set and the caller wants to clear it
+    {
+        writeRTC( RTC_STATUS, s & ~_BV(OSF) );
+    }
+    return ret;
+}
+
+// Returns the temperature in Celsius times four.
+int16_t DS3232RTC::temperature()
+{
+    union int16_byte {
+        int16_t i;
+        byte b[2];
+    } rtcTemp;
+
+    rtcTemp.b[0] = readRTC(RTC_TEMP_LSB);
+    rtcTemp.b[1] = readRTC(RTC_TEMP_MSB);
+    return rtcTemp.i / 64;
+}
+
+// Decimal-to-BCD conversion
+uint8_t DS3232RTC::dec2bcd(uint8_t n)
+{
+    return n + 6 * (n / 10);
+}
+
+// BCD-to-Decimal conversion
+uint8_t __attribute__ ((noinline)) DS3232RTC::bcd2dec(uint8_t n)
+{
+    return n - 6 * (n >> 4);
+}
+
+#ifdef ARDUINO_ARCH_AVR
+DS3232RTC RTC;      // instantiate an RTC object
+#endif