// sermem.h - Copyright 1998 (c) Kevin W Ross, all rights reserved
//
// Accompanies sermem.c and defines some of the basic information needed to
// deal with the serial EEPROM memories.
//
//
// Device Profiles - Here are the variables needed for each specific type of
// chip. Some have different page sizes and data sizes
//

#ifdef	 AT25128
#define SERMEM_PAGE_SIZE 64
#define SERMEM_SIZE		 16384
#endif

#ifdef	AT25256
#define	SERMEM_PAGE_SIZE 64
#define	SERMEM_SIZE		 32768
#endif

#ifdef	M25C640
#define	SERMEM_PAGE_SIZE 32
#define SERMEM_SIZE		 8192
#endif

#define SERMEM_PAGE_MASK (SERMEM_PAGE_SIZE-1)


//
// Here are the command opcodes for the serial EEPROM
//

#define SERMEM_INST_WREN	0x06	// 0b00000110
#define SERMEM_INST_WRDI	0x04	// 0b00000100
#define SERMEM_INST_RDSR	0x05	// 0b00000101
#define SERMEM_INST_WRSR	0x01	// 0b00000001
#define SERMEM_INST_READ	0x03	// 0b00000011
#define SERMEM_INST_WRITE	0x02	// 0b00000010

unsigned char sermem_byte_command(unsigned char byte);
void sermem_Initialize();

#define sermem_WriteEnable() sermem_byte_command(SERMEM_INST_WREN)
#define sermem_WriteDisable() sermem_byte_command(SERMEM_INST_WRDI)

void sermem_BlockProtection(unsigned char byte);

void sermem_StartRead(int iAddress);
void sermem_Read(unsigned char *pBuf,int cBuf);
void sermem_StopRead(void);
void sermem_ReadBlock(int iAddress,unsigned char *pBuf,int cBuf);

void sermem_StartWrite(int iAddress);
void sermem_Write(unsigned char *pBuf,int cBuf);
void sermem_StopWrite(void);
void sermem_WriteBlock(int iAddress,unsigned char *pBuf,int cBuf);

void sermem_Fill(int iAddress,unsigned char byte,int count);

#ifdef	DEBUG
extern int sermem_fVerbose;
#endif