/**
*     Copyright (c) 2023, Nations Technologies Inc.
* 
*     All rights reserved.
*
*     This software is the exclusive property of Nations Technologies Inc. (Hereinafter 
* referred to as NATIONS). This software, and the product of NATIONS described herein 
* (Hereinafter referred to as the Product) are owned by NATIONS under the laws and treaties
* of the People's Republic of China and other applicable jurisdictions worldwide.
*
*     NATIONS does not grant any license under its patents, copyrights, trademarks, or other 
* intellectual property rights. Names and brands of third party may be mentioned or referred 
* thereto (if any) for identification purposes only.
*
*     NATIONS reserves the right to make changes, corrections, enhancements, modifications, and 
* improvements to this software at any time without notice. Please contact NATIONS and obtain 
* the latest version of this software before placing orders.

*     Although NATIONS has attempted to provide accurate and reliable information, NATIONS assumes 
* no responsibility for the accuracy and reliability of this software.
* 
*     It is the responsibility of the user of this software to properly design, program, and test 
* the functionality and safety of any application made of this information and any resulting product. 
* In no event shall NATIONS be liable for any direct, indirect, incidental, special,exemplary, or 
* consequential damages arising in any way out of the use of this software or the Product.
*
*     NATIONS Products are neither intended nor warranted for usage in systems or equipment, any
* malfunction or failure of which may cause loss of human life, bodily injury or severe property 
* damage. Such applications are deemed, "Insecure Usage".
*
*     All Insecure Usage shall be made at user's risk. User shall indemnify NATIONS and hold NATIONS 
* harmless from and against all claims, costs, damages, and other liabilities, arising from or related 
* to any customer's Insecure Usage.

*     Any express or implied warranty with regard to this software or the Product, including,but not 
* limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement
* are disclaimed to the fullest extent permitted by law.

*     Unless otherwise explicitly permitted by NATIONS, anyone may not duplicate, modify, transcribe
* or otherwise distribute this software for any purposes, in whole or in part.
*
*     NATIONS products and technologies shall not be used for or incorporated into any products or systems
* whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. 
* User shall comply with any applicable export control laws and regulations promulgated and administered by 
* the governments of any countries asserting jurisdiction over the parties or transactions.
**/

/**
*\*\file      spi_flash.h
*\*\author    Nations
*\*\version   v1.0.0
*\*\copyright Copyright (c) 2023, Nations Technologies Inc. All rights reserved. 
*/
#ifndef __SPI_FLASH_H__
#define __SPI_FLASH_H__

#ifdef __cplusplus
extern "C" {
#endif

#include "n32h47x_48x.h"
#include "n32h47x_48x_gpio.h"
#include "n32h47x_48x_spi.h"
#include "n32h47x_48x_rcc.h"

/** SPI Flash supported commands **/
#define sFLASH_CMD_WRITE 0x02 /*!< Write to Memory instruction */
#define sFLASH_CMD_WRSR  0x01 /*!< Write Status Register instruction */
#define sFLASH_CMD_WREN  0x06 /*!< Write enable instruction */
#define sFLASH_CMD_READ  0x03 /*!< Read from Memory instruction */
#define sFLASH_CMD_RDSR  0x05 /*!< Read Status Register instruction  */
#define sFLASH_CMD_RDID  0x9F /*!< Read identification */
#define sFLASH_CMD_SE    0x20 /*!< Sector Erase instruction */
#define sFLASH_CMD_BE    0x52 /*!< Block Erase instruction (32k)*/
#define sFLASH_CMD_CE    0xC7 /*!< Chip Erase instruction */
//#define sFLASH_CMD_BE    0xD8 /*!< Block Erase instruction (64k)*/

#define sFLASH_WIP_FLAG 0x01 /*!< Write In Progress (WIP) flag */

#define sFLASH_DUMMY_BYTE   0xA5
#define sFLASH_SPI_PAGESIZE 0x100

#define sFLASH_W25Q128_ID       0x00EF4018
#define sFLASH_W25Q128_ID_DTR   0x00EF7018

#define sFLASH_SPI                SPI1
#define sFLASH_SPI_CLK            RCC_APB2_PERIPH_SPI1
#define sFLASH_SPI_SCK_PIN        GPIO_PIN_5 /* PA.05 */
#define sFLASH_SPI_SCK_GPIO_PORT  GPIOA      /* GPIOA */
#define sFLASH_SPI_SCK_GPIO_CLK   RCC_AHB_PERIPHEN_GPIOA
#define sFLASH_SPI_SCK_GPIO_AF    GPIO_AF1
#define sFLASH_SPI_MISO_PIN       GPIO_PIN_6 /* PA.06 */
#define sFLASH_SPI_MISO_GPIO_PORT GPIOA      /* GPIOA */
#define sFLASH_SPI_MISO_GPIO_CLK  RCC_AHB_PERIPHEN_GPIOA
#define sFLASH_SPI_MISO_GPIO_AF   GPIO_AF1
#define sFLASH_SPI_MOSI_PIN       GPIO_PIN_7 /* PA.07 */
#define sFLASH_SPI_MOSI_GPIO_PORT GPIOA      /* GPIOA */
#define sFLASH_SPI_MOSI_GPIO_CLK  RCC_AHB_PERIPHEN_GPIOA
#define sFLASH_SPI_MOSI_GPIO_AF   GPIO_AF1
#define sFLASH_CS_PIN             GPIO_PIN_4 /* PA.04 */
#define sFLASH_CS_GPIO_PORT       GPIOA      /* GPIOA */
#define sFLASH_CS_GPIO_CLK        RCC_AHB_PERIPHEN_GPIOA
#define sFLASH_CS_GPIO_AF         GPIO_AF1

/** Select sFLASH: Chip Select pin low **/
#define sFLASH_CS_LOW() GPIO_ResetBits(sFLASH_CS_GPIO_PORT, sFLASH_CS_PIN)
/** Deselect sFLASH: Chip Select pin high **/
#define sFLASH_CS_HIGH() GPIO_SetBits(sFLASH_CS_GPIO_PORT, sFLASH_CS_PIN)

/** High layer functions **/
void sFLASH_DeInit(void);
void sFLASH_Init(void);
void sFLASH_EraseSector(uint32_t SectorAddr);
void sFLASH_EraseBulk(void);
void sFLASH_WritePage(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite);
void sFLASH_WriteBuffer(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite);
void sFLASH_ReadBuffer(uint8_t* pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead);
uint32_t sFLASH_ReadID(void);
void sFLASH_StartReadSequence(uint32_t ReadAddr);

/** Low layer functions **/
uint8_t sFLASH_ReadByte(void);
uint8_t sFLASH_SendByte(uint8_t byte);
uint16_t sFLASH_SendHalfWord(uint16_t HalfWord);
void sFLASH_WriteEnable(void);
void sFLASH_WaitForWriteEnd(void);

#ifdef __cplusplus
}
#endif

#endif


