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/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#pragma once
#include <string>
#include <mraa/i2c.hpp>
#define ADDR 0x68 // device address
// timekeeping registers
#define TIME_CAL_ADDR 0x00
#define ALARM1_ADDR 0x07
#define ALARM2_ADDR 0x0B
#define CONTROL_ADDR 0x0E
#define STATUS_ADDR 0x0F
#define AGING_OFFSET_ADDR 0x10
#define TEMPERATURE_ADDR 0x11
// control register bits
#define A1IE 0x1
#define A2IE 0x2
#define INTCN 0x4
// status register bits
#define A1F 0x1
#define A2F 0x2
#define OSF 0x80
#define HIGH 1
#define LOW 0
namespace upm {
struct Time3231 {
uint8_t second;
uint8_t minute;
uint8_t hour;
uint8_t day;
uint8_t month;
int16_t year;
uint8_t weekDay;
};
/**
* @brief MAXDS3231M Proximity Sensor library
* @defgroup maxds3231m libupm-maxds3231m
* @ingroup maxim i2c light
*/
/**
* @library maxds3231m
* @sensor maxds3231m
* @comname MAXDS3231M Real-Time Clock
* @type light
* @man maxim
* @con i2c
*
* @brief API for the MAXDS3231M I2C Real-Time Clock
*
* This module defines the API for MAXDS3231M
*
* @snippet maxds3231m.cxx Interesting
*/
class MAXDS3231M {
public:
/**
* Instantiates an MAXDS3231M object
*
* @param bus Number of the used bus
* @param devAddr Address of the used I2C device
*/
MAXDS3231M (int bus=0, int devAddr=0x68);
/**
* Sets the date and time on the chip.
*
* @param time Time structure
*/
void setDate (Time3231 &time);
/**
* Gets the date and time from the chip.
*
* @param time Time structure
*/
bool getDate (Time3231 &time);
/**
* Gets the on-board temperature.
*/
uint16_t getTemperature ();
/**
* Returns the name of the component
*/
std::string name()
{
return m_name;
}
private:
std::string m_name;
int m_i2cAddr;
int m_bus;
mraa::I2c m_i2Ctx;
uint16_t i2cReadReg_N (int reg, unsigned int len, uint8_t * buffer);
mraa::Result i2cWriteReg_N (uint8_t reg, unsigned int len, uint8_t * buffer);
uint8_t DECtoBSD (uint8_t data);
uint8_t BCDtoDEC (uint8_t data);
};
}
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