/**
*     Copyright (c) 2025, Nsing Technologies Inc.
* 
*     All rights reserved.
*
*     This software is the exclusive property of Nsing Technologies Inc. (Hereinafter 
* referred to as Nsing). This software, and the product of Nsing described herein 
* (Hereinafter referred to as the Product) are owned by Nsing under the laws and treaties
* of the People's Republic of China and other applicable jurisdictions worldwide.
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* intellectual property rights. Names and brands of third party may be mentioned or referred 
* thereto (if any) for identification purposes only.
*
*     Nsing reserves the right to make changes, corrections, enhancements, modifications, and 
* improvements to this software at any time without notice. Please contact Nsing and obtain 
* the latest version of this software before placing orders.

*     Although Nsing has attempted to provide accurate and reliable information, Nsing 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 Nsing 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.
*
*     Nsing 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".
*
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* harmless from and against all claims, costs, damages, and other liabilities, arising from or related 
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**/

/**
*\*\file spi_flash.h
*\*\author Nsing
*\*\version v1.0.0
*\*\copyright Copyright (c) 2025, Nsing Technologies Inc. All rights reserved.
**/

#ifndef __SPI_FLASH_H__
#define __SPI_FLASH_H__

#ifdef __cplusplus
extern "C" {
#endif

#include "n32g033.h"
#include "n32g033_rcc.h"
#include "n32g033_gpio.h"
#include "n32g033_spi.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    0xC7 /* Chip Erase instruction */

#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_GD25Q16_ID 0x00C84015
#define sFLASH_M25P64_ID  0x202017

#define sFLASH_SPI                SPI1

#define sFLASH_SPI_CLK            RCC_APB_PERIPH_SPI1

/* SPI SCK */
#define sFLASH_SPI_SCK_PIN        GPIO_PIN_3
#define sFLASH_SPI_SCK_GPIO_PORT  GPIOB
#define sFLASH_SPI_SCK_GPIO_CLK   RCC_APB_PERIPH_GPIO
#define sFLASH_SPI_SCK_GPIO_AF    GPIO_AF0

/* SPI MISO */
#define sFLASH_SPI_MISO_PIN       GPIO_PIN_4
#define sFLASH_SPI_MISO_GPIO_PORT GPIOB
#define sFLASH_SPI_MISO_GPIO_CLK  RCC_APB_PERIPH_GPIO
#define sFLASH_SPI_MISO_GPIO_AF   GPIO_AF0

/* SPI MOSI */
#define sFLASH_SPI_MOSI_PIN       GPIO_PIN_5
#define sFLASH_SPI_MOSI_GPIO_PORT GPIOB
#define sFLASH_SPI_MOSI_GPIO_CLK  RCC_APB_PERIPH_GPIO
#define sFLASH_SPI_MOSI_GPIO_AF   GPIO_AF0

/* SPI CS */
#define sFLASH_CS_PIN             GPIO_PIN_15
#define sFLASH_CS_GPIO_PORT       GPIOA
#define sFLASH_CS_GPIO_CLK        RCC_APB_PERIPH_GPIO
#define sFLASH_CS_GPIO_AF         GPIO_AF0

/** 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)





void sFLASH_LowLevel_DeInit(void);
void sFLASH_LowLevel_Init(void);
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 /* __SPI_FLASH_H__ */

