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/*
* Author: Benedikt Sauter <sauter@ixbat.de>
* All rights reserved.
*
* Short descripton of file:
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the FH Augsburg nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SPI_H
#define SPI_H
#include <avr/io.h>
#include <avr/pgmspace.h>
#include "io.h"
#define CS (B, 0)
#define SK (B, 1)
#define DI (B, 2)
#define DO (B, 3)
#define DIN0 (B, 4)
#define DIN1 (B, 5)
#define CMD_READ 0x80
#define CMD_EWEN 0x30
#define CMD_ERASE 0xc0
#define CMD_WRITE 0x40
#define CMD_ERAL 0x20
#define CMD_WRAL 0x10
#define CMD_EWDS 0x00
#define PIN_S PB0
#define PIN_C PB1
#define PIN_D PB2
#define PIN_Q PB3
void flash_93c46_parser(char *buf);
int flash_93c46_init(void);
int flash_93c46_deinit(void);
int flash_93c46_read(unsigned char address, unsigned int length, char * buf);
int flash_93c46_write(unsigned char address, unsigned int length, char* buf);
void flash_93c46_init_usb(void);
void flash_93c46_deinit_usb(void);
void flash_93c46_read_usb(unsigned char address, unsigned int length, char* buf);
void flash_93c46_write_usb(unsigned char address, unsigned int length, char* buf);
void start_of_ins(void);
void send_sb_opcode(uint8_t ins);
void send_data_byte(uint8_t da);
uint8_t end_of_erase_write(void);
void end_of_erase_write_disable(void);
void erase_write_enable(void);
void send_address(uint8_t da);
uint8_t write_word_step(uint8_t add,uint8_t wd);
uint8_t recv_data_word(void);
uint8_t erase_word(uint8_t add);
void erase_write_disable(void);
uint8_t flash_93c46_read_word(uint8_t add);
uint8_t flash_93c46_write_word(uint8_t add,uint8_t wd);
#endif /* SPI_H */
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