#ifndef _DATAFLASH_H_#define _DATAFLASH_H_#include <avr/io.h>//pin config#include "config.h"//rst/cs macros#define DATAFLASH_RESET_LO() DATAFLASH_PORT &= ~(1<<DATAFLASH_PIN_RST);#define DATAFLASH_RESET_HI() DATAFLASH_PORT |= (1<<DATAFLASH_PIN_RST);#define DATAFLASH_CS_LO()    DATAFLASH_PORT &= ~(1<<DATAFLASH_PIN_CS);#define DATAFLASH_CS_HI()    DATAFLASH_PORT |= (1<<DATAFLASH_PIN_CS);//dataflash globals:#define DATAFLASH_MAX_PAGE 2048//dataflash registers:#define DATAFLASH_BLOCK_ERASE         0x50#define DATAFLASH_MEM_PAGE_READ       0x52#define DATAFLASH_READ_BUFFER0        0xD4#define DATAFLASH_READ_BUFFER1        0xD6#define DATAFLASH_MEM_TO_BUFFER0      0x53#define DATAFLASH_MEM_TO_BUFFER1      0x55#define DATAFLASH_MEM_COMP_BUFFER0    0x60#define DATAFLASH_MEM_COMP_BUFFER1    0x61#define DATAFLASH_WRITE_BUFFER0       0x84#define DATAFLASH_WRITE_BUFFER1       0x87#define DATAFLASH_BUFFER0_TO_MEM_WE   0x83#define DATAFLASH_BUFFER1_TO_MEM_WE   0x86#define DATAFLASH_BUFFER0_TO_MEM_NE   0x88#define DATAFLASH_BUFFER1_TO_MEM_NE   0x89#define DATAFLASH_MEM_WR_TH_BUFFER0   0x82#define DATAFLASH_MEM_WR_TH_BUFFER1   0x85#define DATAFLASH_AUTO_RW_TH_BUFFER0  0x58#define DATAFLASH_AUTO_RW_TH_BUFFER1  0x59#define DATAFLASH_READ_STATUS         0xD7#define DATAFLASH_READY 							0x80//initialise dataflashvoid dataflash_init(void);//dump flash content using given putchar function:void dataflash_dump(void);//copy given buffer to flash pagevoid dataflash_copy_buffer_to_page(unsigned int page, unsigned char buffer);//write one byte to given page buffervoid dataflash_write_to_page_buffer(unsigned int byte, unsigned char buffer, unsigned char data);//write len bytes to given page buffervoid dataflash_write_n_to_page_buffer(unsigned int byte, unsigned char buffer, unsigned char *data, unsigned int len);//copy flash page to given buffervoid dataflash_copy_page_to_buffer(unsigned int page, unsigned char buffer);//read one byte from bufferunsigned char dataflash_read_buffer(unsigned int byte, unsigned char buffer);//read 256 byte to buffer ptrvoid dataflash_read_n_to_buffer(unsigned char *buffer, unsigned char selbuf);//read 1 byte directly from flash:unsigned char dataflash_read_flash(unsigned int page, unsigned int byte);//wait for dataflash ready flagvoid dataflash_busy_wait(void);//read&write one byte on spiunsigned char dataflash_spi_writeread_byte(unsigned char data);#endif