#include "Arduino.h"
#include "Wire.h"

Go to the source code of this file.

Classes
class	DateTime
	Simple general-purpose date/time class. More...

class	TimeSpan
	Timespan class which can represent changes in time with seconds accuracy. More...

class	MCP7940_Class
	Main class definition with forward declarations. More...

Macros
#define	MCP7940_h
	Guard code definition.

#define	I2C_MODES
	Guard code definition.

#define	BUFFER_LENGTH 32
	If the "Wire.h" library doesn't define the buffer, do so here.

Variables
const uint32_t	I2C_STANDARD_MODE {100000}
	Default normal I2C 100KHz speed.

const uint32_t	I2C_FAST_MODE {400000}
	Fast mode.

const uint8_t	MCP7940_ADDRESS {0x6F}
	Fixed I2C address, fixed.

const uint8_t	MCP7940_EUI_ADDRESS {0x57}
	Fixed I2C address for accessing protected ROM.

const uint8_t	MCP7940_RTCSEC {0x00}
	Timekeeping, RTCSEC Register address.

const uint8_t	MCP7940_RTCMIN {0x01}
	Timekeeping, RTCMIN Register address.

const uint8_t	MCP7940_RTCHOUR {0x02}
	Timekeeping, RTCHOUR Register address.

const uint8_t	MCP7940_RTCWKDAY {0x03}
	Timekeeping, RTCWKDAY Register address.

const uint8_t	MCP7940_RTCDATE {0x04}
	Timekeeping, RTCDATE Register address.

const uint8_t	MCP7940_RTCMTH {0x05}
	Timekeeping, RTCMTH Register address.

const uint8_t	MCP7940_RTCYEAR {0x06}
	Timekeeping, RTCYEAR Register address.

const uint8_t	MCP7940_CONTROL {0x07}
	Timekeeping, RTCCONTROL Register address.

const uint8_t	MCP7940_OSCTRIM {0x08}
	Timekeeping, RTCOSCTRIM Register address.

const uint8_t	MCP7940_EEUNLOCK {0x09}
	Virtual unlock register on MCP7940x series.

const uint8_t	MCP7940_ALM0SEC {0x0A}
	Alarm 0, ALM0SEC Register address.

const uint8_t	MCP7940_ALM0MIN {0x0B}
	Alarm 0, ALM0MIN Register address.

const uint8_t	MCP7940_ALM0HOUR {0x0C}
	Alarm 0, ALM0HOUR Register address.

const uint8_t	MCP7940_ALM0WKDAY {0x0D}
	Alarm 0, ALM0WKDAY Register address.

const uint8_t	MCP7940_ALM0DATE {0x0E}
	Alarm 0, ALM0DATE Register address.

const uint8_t	MCP7940_ALM0MTH {0x0F}
	Alarm 0, ALM0MTH Register address.

const uint8_t	MCP7940_ALM1SEC {0x11}
	Alarm 1, ALM1SEC Register address.

const uint8_t	MCP7940_ALM1MIN {0x12}
	Alarm 1, ALM1MIN Register address.

const uint8_t	MCP7940_ALM1HOUR {0x13}
	Alarm 1, ALM1HOUR Register address.

const uint8_t	MCP7940_ALM1WKDAY {0x14}
	Alarm 1, ALM1WKDAY Register address.

const uint8_t	MCP7940_ALM1DATE {0x15}
	Alarm 1, ALM1DATE Register address.

const uint8_t	MCP7940_ALM1MTH {0x16}
	Alarm 1, ALM1MONTH Register address.

const uint8_t	MCP7940_PWRDNMIN {0x18}
	Power-Fail, PWRDNMIN Register address.

const uint8_t	MCP7940_PWRDNHOUR {0x19}
	Power-Fail, PWRDNHOUR Register address.

const uint8_t	MCP7940_PWRDNDATE {0x1A}
	Power-Fail, PWDNDATE Register address.

const uint8_t	MCP7940_PWRDNMTH {0x1B}
	Power-Fail, PWRDNMTH Register address.

const uint8_t	MCP7940_PWRUPMIN {0x1C}
	Power-Fail, PWRUPMIN Register address.

const uint8_t	MCP7940_PWRUPHOUR {0x1D}
	Power-Fail, PWRUPHOUR Register address.

const uint8_t	MCP7940_PWRUPDATE {0x1E}
	Power-Fail, PWRUPDATE Register address.

const uint8_t	MCP7940_PWRUPMTH {0x1F}
	Power-Fail, PWRUPMTH Register address.

const uint8_t	MCP7940_RAM_ADDRESS {0x20}
	NVRAM - Start address for SRAM.

const uint8_t	MCP7940_EUI_RAM_ADDRESS {0xF0}
	EUI - Start address for protected EEPROM.

const uint8_t	MCP7940_ST {7}
	MCP7940 register bits. RTCSEC reg.

const uint8_t	MCP7940_12_24 {6}
	RTCHOUR, PWRDNHOUR & PWRUPHOUR.

const uint8_t	MCP7940_AM_PM {5}
	RTCHOUR, PWRDNHOUR & PWRUPHOUR.

const uint8_t	MCP7940_OSCRUN {5}
	RTCWKDAY register.

const uint8_t	MCP7940_PWRFAIL {4}
	RTCWKDAY register.

const uint8_t	MCP7940_VBATEN {3}
	RTCWKDAY register.

const uint8_t	MCP7940_LPYR {5}
	RTCMTH register.

const uint8_t	MCP7940_OUT {7}
	CONTROL register.

const uint8_t	MCP7940_SQWEN {6}
	CONTROL register.

const uint8_t	MCP7940_ALM1EN {5}
	CONTROL register.

const uint8_t	MCP7940_ALM0EN {4}
	CONTROL register.

const uint8_t	MCP7940_EXTOSC {3}
	CONTROL register.

const uint8_t	MCP7940_CRSTRIM {2}
	CONTROL register.

const uint8_t	MCP7940_SQWFS1 {1}
	CONTROL register.

const uint8_t	MCP7940_SQWFS0 {0}
	CONTROL register.

const uint8_t	MCP7940_SIGN {7}
	OSCTRIM register.

const uint8_t	MCP7940_ALMPOL {7}
	ALM0WKDAY register.

const uint8_t	MCP7940_ALM0IF {3}
	ALM0WKDAY register.

const uint8_t	MCP7940_ALM1IF {3}
	ALM1WKDAY register.

const uint32_t	SECS_1970_TO_2000 {946684800}
	Seconds between year 1970 and 2000.

Classes

Macros

Variables