SFLib.h

#include <Arduino.h>

// #define NORFLASH_DEBUG_ENABLE  // uart debug
// #define HARDWARE_SPI           // use hardware spi
#define SOFTWARE_SPI           // use software spi

#if (defined STM32F4xx) || (defined STM32F1xx)
#define NORFLASH_CS_PIN         PB7
#define NORFLASH_CLK_PIN        PB3       
#define NORFLASH_MOSI_PIN       PB5       
#define NORFLASH_MISO_PIN       PB4
#elif (defined ESP32)
#define NORFLASH_CS_PIN         15
#define NORFLASH_CLK_PIN        14       
#define NORFLASH_MOSI_PIN       13       
#define NORFLASH_MISO_PIN       12
#endif

// #define NORFLASH_HOLD_PIN       9   // hold pin no connect 3.3V 
// #define NORFLASH_WP_PIN         14  // hold pin no connect 3.3V  
#define NORFLASH_HOLD_PIN         -1   // hold pin connect 3.3V
#define NORFLASH_WP_PIN           -1   // wp pin connect 3.3V

#define ManufactDeviceID_CMD	  0x90   
#define READ_JEDEC_ID_CMD         0x9F
#define WRITE_STATUS              0x01    
#define READ_STATU_REGISTER_1     0x05    
#define READ_STATU_REGISTER_2     0x35
#define READ_DATA_CMD	          0x03
#define WRITE_ENABLE_CMD	      0x06
#define WRITE_DISABLE_CMD	      0x04
#define SECTOR_ERASE_CMD	      0x20
#define CHIP_ERASE_CMD	          0xC7
#define PAGE_PROGRAM_CMD          0x02
#define RELEASE_POWERDOWN_CMD     0x02

#define ONE_PAGE_SIZE           256     
#define SPI_FREQUENCY           40 * 1000000


class SFLib {
	
public:
    void begin();
	
	void read_data(uint32_t addr24, uint8_t *pbuf, uint32_t len);
	
	void write_one_sector_data(uint32_t addr, uint8_t * pbuf, uint16_t len);
	void write_one_block_data(uint32_t addr, uint8_t * pbuf, uint16_t len);
	void write_arbitrary_data(uint32_t addr, uint8_t* pbuf, uint32_t len);

	void sector_erase(uint32_t addr24);
    void bulk_erase(); 
	uint8_t read_status();
	void write_status(uint8_t status);

	uint16_t read_id();
    uint16_t read_chipid();
	void write_enable();
	void write_disable();
	void wakeup(void);
	void check_busy(String str);
private:
	void write_byte(uint8_t data);
	uint8_t read_byte(uint8_t tx_data);
};