/* Arduino SPIFlash Library v.2.5.0
 * Copyright (C) 2015 by Prajwal Bhattaram
 * Modified by Prajwal Bhattaram - 13/11/2016
 *
 * This file is part of the Arduino SPIFlash Library. This library is for
 * Winbond NOR flash memory modules. In its current form it enables reading
 * and writing individual data variables, structs and arrays from and to various locations;
 * reading and writing pages; continuous read functions; sector, block and chip erase;
 * suspending and resuming programming/erase and powering down for low power operation.
 *
 * This Library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This Library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License v3.0
 * along with the Arduino SPIFlash Library.  If not, see
 * <http://www.gnu.org/licenses/>.
 */
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
//                      Common Instructions                           //
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
#ifndef __FLASHMEM_H
#define __FLASHMEM_H

#include "common.h"

//    Used Command
#define ID              0x90
#define MANID           0x90
#define JEDECID         0x9F

#define READSTAT1       0x05
#define READSTAT2       0x35
#define WRITESTAT       0x01

#define WRITEDISABLE    0x04
#define WRITEENABLE     0x06

#define READDATA        0x03
#define FASTREAD        0x0B
#define PAGEPROG        0x02

#define SECTORERASE     0x20
#define BLOCK32ERASE    0x52
#define BLOCK64ERASE    0xD8
#define CHIPERASE       0xC7

#define UNIQUE_ID       0x4B

//    Not used or not support command
#define RELEASE         0xAB
#define POWERDOWN       0xB9
#define SUSPEND         0x75
#define RESUME          0x7A

// Flash busy timeout: 20ms is the strict minimum when writing 256kb
#define BUSY_TIMEOUT    200000L

#define WINBOND_MANID   0xEF
#define WINBOND_DEVID   0x11
#define PAGESIZE        0x100
#define WINBOND_WRITE_DELAY 0x02

#define SPI_CLK         48000000

#define BUSY            0x01
#define WRTEN           0x02
#define SUS             0x40

#define DUMMYBYTE       0xEE
#define NULLBYTE        0x00
#define NULLINT         0x0000
#define NO_CONTINUE     0x00
#define PASS            0x01
#define FAIL            0x00
#define maxAddress      capacity

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
//                            List of Error codes                          //
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
#define SUCCESS         0x00
#define CALLBEGIN       0x01
#define UNKNOWNCHIP     0x02
#define UNKNOWNCAP      0x03
#define CHIPBUSY        0x04
#define OUTOFBOUNDS     0x05
#define CANTENWRITE     0x06
#define PREVWRITTEN     0x07
#define LOWRAM          0x08
#define NOSUSPEND       0x09
#define UNKNOWNERROR    0xFF

// List of blocks
#define MAX_BLOCKS      4
#define MAX_SECTORS     16

//#define FLASH_BAUD 24000000
#define FLASH_MINFAST 24000000 //33000000
#define FLASH_BAUD MCK/2
#define FLASH_FASTBAUD MCK
#define FLASH_MINBAUD FLASH_FASTBAUD

#define FASTFLASH (FLASHMEM_SPIBAUDRATE > FLASH_MINFAST)

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//

void FlashmemSetSpiBaudrate(uint32_t baudrate);
bool FlashInit();
void FlashSetup(uint32_t baudrate);
void FlashStop(void);
bool Flash_WaitIdle(void);
uint8_t Flash_ReadStat1(void);
uint8_t Flash_ReadStat2(void);
uint16_t FlashSendByte(uint32_t data);
void Flash_TransferAdresse(uint32_t address);

bool Flash_CheckBusy(uint32_t timeout);

void Flash_WriteEnable();
bool Flash_WipeMemoryPage(uint8_t page);
bool Flash_WipeMemory();
bool Flash_Erase4k(uint8_t block, uint8_t sector);
//bool Flash_Erase32k(uint32_t address);
bool Flash_Erase64k(uint8_t block);

void Flash_UniqueID(uint8_t *uid);
uint8_t Flash_ReadID(void);
uint16_t Flash_ReadData(uint32_t address, uint8_t *out, uint16_t len);
uint16_t Flash_ReadDataCont(uint32_t address, uint8_t *out, uint16_t len);
uint16_t Flash_Write(uint32_t address, uint8_t *in, uint16_t len);
uint16_t Flash_WriteData(uint32_t address, uint8_t *in, uint16_t len);
uint16_t Flash_WriteDataCont(uint32_t address, uint8_t *in, uint16_t len);
void Flashmem_print_status(void);
void Flashmem_print_info(void);
uint16_t FlashSendLastByte(uint32_t data);

#endif
