ds1338/ds1338.h

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#ifndef DS1338_H_
#define DS1338_H_

#include <stdint.h>

typedef union ds1338DateTimeControl
{
        struct
        {
                uint8_t Seconds:7;
                uint8_t ClockHalt:1;

                uint8_t Minutes;

                uint8_t Hour:6;
                uint8_t AMPMEnable:1;
                uint8_t :1;

                uint8_t Day;
                uint8_t Date;
                uint8_t Month;
                uint8_t Year;
                struct
                {
                        uint8_t RateSelect:2;
                        uint8_t :2;
                        uint8_t SquareWaveEnable:1;
                        uint8_t OscillatorStopFlag:1;
                        uint8_t :1;
                        uint8_t OutPin:1;
                } ControlRegister;
        };
        uint8_t rawData[8];
} ds1338TDC;

#define DEVICE 0xD0 
#define WRITE 0x00      
#define READ 0x01       

#define TWI_BITRATE 25000       
void ds1338_setup(); //Setups TWI interface

typedef enum
{
NO_ERROR,            
LOCATION_OUTOFBOUNDS,
RANGE_OUTOFBOUNDS,   
NO_DEVICE,           
DEVICE_BUSY,         
BUS_ERROR            
} ds1338_status; //Stores comunication status

ds1338_status ds1338_readTimeDateControl(ds1338TDC * data);

ds1338_status ds1338_writeTimeDateControl(ds1338TDC * data);//read Time/Date Structure

ds1338_status ds1338_writeBufferToNVRAM(uint8_t start,uint8_t lenght, uint8_t * data);
ds1338_status ds1338_readBufferFromNVRAM(uint8_t start,uint8_t lenght, uint8_t * data);
ds1338_status ds1338_writeByteToNVRAM(uint8_t location, uint8_t data);
ds1338_status ds1338_readByteFromNVRAM(uint8_t location, uint8_t * data);


#endif /* DS1338_H_ */

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