[Raspberry Pi Pico (c-sdk)] Storage: Ep 5. TinyUSB USB Mass Storage Device(USB Stick) with 2 LUNs

 本文章介紹Raspberry Pi Pico (RP2040)使用TinyUSB函式庫，建制一個含有兩個LUN(SD and W25Q flash)的USB Mass Storage device(USB Stick)。

有關USB界面與SCSI指令部份由TinyUSB函式庫處理，SD與W25Q Flash 的驅動程式則是修改自前一篇文章的程式碼。

一、TinyUSB

使用usb_device_dual範例程式。

• usb_descriptiors.c: 為根據USB specification所定義，因此直接引用，未修改。
• msc_disk_dual.c: 保留所有callback架構，修改後的檔名msc_device_disk.c，有關
  tud_msc_capacity_cb()，則呼叫SD與W25Q driver取得sector count and secotr size。
  tud_msc_read10_cb與tud_msc_write10_cb則個別呼叫SD與W25Q driver的sdmmc_read_sector(), sdmmc_write_sector(), w25q_read_serctor() and w25q_write_sector()。
• mian.c:呼叫4個function即可。
  storage_driver_init();
  board_init();
  tud_init(BOARD_TUD_RHPORT);
  while (1)
  {
        tud_task(); // tinyusb device task
   }

詳細程式碼附於文末，

實際在Debian(Linux), Windows and FreeBSD系統下測試I/O效能、磁碟分割與檔案操作，請參閱下列影片。

二、成果展示

Note:

• 若只使用SD card，則在 msc_device_disk.c 將

// Invoked to determine max LUN
uint8_t tud_msc_get_maxlun_cb(void)
{
  return 2; // LUN 0: SDMMC, LUN 1: W25Q Flash
  }

改為return 1;如下圖所示：

• 在storage_driver.h檔案中定義SPI速度。

#define SPI_BAUDRATE_LOW (1000*1000)
#define SPI_BAUDRATE_HIGH (40*1000*1000)

某些SD card的模組與Pico的相容性問題，可嘗試將

SPI_BAUDRATE_HIGH降低，例如：

#define SPI_BAUDRATE_HIGH (10*1000*1000)

三、程式碼

• msc_device_disk.c

/* this file was modified from tinyUSB example: msc_disk_dual.c*/

/* 
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */
#include "bsp/board.h"
#include "tusb.h"

#include "W25Q.h"
#include "spi_sdmmc.h"
#include "hardware/gpio.h"
#include "storage_driver.h"

w25q_data_t *pW25Q=NULL;
sdmmc_data_t *pSDMMC=NULL;

void storage_driver_init() {
  // W25Q driver initialize
  pW25Q = (w25q_data_t*)malloc(sizeof(w25q_data_t));
  pW25Q->spiInit=false;
  w25q_disk_initialize(W25Q_SPI_PORT, W25Q_PIN_CS, pW25Q);

  // SDMMC driver initialize
  pSDMMC = (sdmmc_data_t*)malloc(sizeof(sdmmc_data_t));
  pSDMMC->spiInit=false;
#ifdef __SPI_SDMMC_DMA
  pSDMMC->dmaInit=false;
#endif
  sdmmc_disk_initialize(SDMMC_SPI_PORT, SDMMC_PIN_CS, pSDMMC);

  // LED blinking when reading/writing
  gpio_init(LED_BLINKING_PIN);
  gpio_set_dir(LED_BLINKING_PIN, true);
}

#if CFG_TUD_MSC

// Invoked to determine max LUN
uint8_t tud_msc_get_maxlun_cb(void)
{
  return 2; // LUN 0: SDMMC, LUN 1: W25Q Flash
}

// Invoked when received SCSI_CMD_INQUIRY
// Application fill vendor id, product id and revision with string up to 8, 16, 4 characters respectively
void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16], uint8_t product_rev[4])
{
  switch (lun) {
    case SDMMC_LUN:
      sprintf(vendor_id  , "SDMMC");
      sprintf(product_id , "Mass Storage");
      sprintf(product_rev, "1.0");
    break;
    case W25Q_LUN:
      sprintf(vendor_id  , "Winbond");
      sprintf(product_id , "Mass Storage");
      sprintf(product_rev, "1.0");
    break;
  }
 
}

// Invoked when received Test Unit Ready command.
// return true allowing host to read/write this LUN e.g SD card inserted
bool tud_msc_test_unit_ready_cb(uint8_t lun)
{
  //if ( lun == 1 && board_button_read() ) return false;

  return true; // RAM disk is always ready
}

// Invoked when received SCSI_CMD_READ_CAPACITY_10 and SCSI_CMD_READ_FORMAT_CAPACITY to determine the disk size
// Application update block count and block size
void tud_msc_capacity_cb(uint8_t lun, uint32_t* block_count, uint16_t* block_size)
{
  switch(lun) {
    case SDMMC_LUN:
        *block_count = pSDMMC->sectCount;
        *block_size  = pSDMMC->sectSize;
    break;
    case W25Q_LUN:
        *block_count = pW25Q->sectorCount;
        *block_size  = pW25Q->sectorSize;
    break;
  }
}

// Invoked when received Start Stop Unit command
// - Start = 0 : stopped power mode, if load_eject = 1 : unload disk storage
// - Start = 1 : active mode, if load_eject = 1 : load disk storage
bool tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject)
{
  (void) lun;
  (void) power_condition;

  if ( load_eject )
  {
    if (start)
    {
      // load disk storage
    }else
    {
      // unload disk storage
    }
  }

  return true;
}

// Callback invoked when received READ10 command.
// Copy disk's data to buffer (up to bufsize) and return number of copied bytes.
int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
{
  switch(lun) {
    case SDMMC_LUN:
      if (!sdmmc_read_sector(lba, buffer, bufsize, pSDMMC)) return -1;
    break;
    case W25Q_LUN:
      if (!w25q_read_sector((uint32_t)lba, offset, buffer, bufsize, pW25Q)) return -1;
    break;
  }
  return (int32_t) bufsize;
}

bool tud_msc_is_writable_cb (uint8_t lun)
{
  (void) lun;

#ifdef CFG_EXAMPLE_MSC_READONLY
  return false;
#else
  return true;
#endif
}

// Callback invoked when received WRITE10 command.
// Process data in buffer to disk's storage and return number of written bytes
int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t* buffer, uint32_t bufsize)
{

  switch (lun) {
    case SDMMC_LUN:
        if (!sdmmc_write_sector(lba, buffer, bufsize, pSDMMC)) return -1;
    break;
    case W25Q_LUN:
      if (offset >= pW25Q->sectorSize) return -1;
#ifndef CFG_EXAMPLE_MSC_READONLY
        w25q_sector_erase(lba, pW25Q);
        w25q_write_sector(lba, offset, buffer, bufsize, pW25Q);
#else
        (void) lun; (void) lba; (void) offset; (void) buffer;
#endif
    break;
  }
  

  return (int32_t) bufsize;
}

// Callback invoked when received an SCSI command not in built-in list below
// - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE
// - READ10 and WRITE10 has their own callbacks
int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
{
  // read10 & write10 has their own callback and MUST not be handled here

  void const* response = NULL;
  int32_t resplen = 0;

  // most scsi handled is input
  bool in_xfer = true;

  switch (scsi_cmd[0])
  {
    default:
      // Set Sense = Invalid Command Operation
      tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);

      // negative means error -> tinyusb could stall and/or response with failed status
      resplen = -1;
    break;
  }

  // return resplen must not larger than bufsize
  if ( resplen > bufsize ) resplen = bufsize;

  if ( response && (resplen > 0) )
  {
    if(in_xfer)
    {
      memcpy(buffer, response, (size_t) resplen);
    }else
    {
      // SCSI output
    }
  }

  return resplen;
}

#endif

void led_blinking_task(void)
{
  static uint32_t start_ms = 0;
  static bool led_state = false;

  // Blink every interval ms
  if ( board_millis() - start_ms < 50) return; // not enough time
  start_ms += 50;

  gpio_put(LED_BLINKING_PIN,led_state);
  led_state = 1 - led_state; // toggle
}

void led_blinking_task_off(void) {
  gpio_put(LED_BLINKING_PIN,false);
}

• CMakeLists.txt(driver)

add_library(storage_driver INTERFACE)
target_sources(storage_driver INTERFACE
    ${CMAKE_CURRENT_LIST_DIR}/sdmmc/spi_sdmmc.c
    ${CMAKE_CURRENT_LIST_DIR}/flash/W25Q.c
    ${CMAKE_CURRENT_LIST_DIR}/msc_device_disk.c

)

target_include_directories(storage_driver INTERFACE
    ${CMAKE_CURRENT_LIST_DIR}/sdmmc
    ${CMAKE_CURRENT_LIST_DIR}/flash
    ${CMAKE_CURRENT_LIST_DIR}

)

target_link_libraries(storage_driver INTERFACE
        hardware_spi
        hardware_dma
        hardware_rtc
        pico_stdlib

)

• storage_driver.h

#ifndef _STORAGE_DRIVER_H_
#define _STORAGE_DRIVER_H_
/* used by my project */

#define SPI_BAUDRATE_LOW (1000*1000)
#define SPI_BAUDRATE_HIGH (40*1000*1000)

enum {
    SDMMC_LUN=0,
    W25Q_LUN=1,
};

/* =================================  */
#define  LED_BLINKING_PIN     25
void led_blinking_task(void);
void led_blinking_task_off(void);
/* =================================  */

void storage_driver_init(void);

#endif

• spi_sdmmc.h

/*
This library is derived from ChaN's FatFs - Generic FAT Filesystem Module.
*/
#ifndef SPI_SDMMC_H
#define SPI_SDMMC_H
#include "hardware/spi.h"
#include "hardware/dma.h"

//#define __SPI_SDMMC_DMA

/* SDMMC SPI pins*/
#define SDMMC_SPI_PORT spi1
#define SDMMC_PIN_MISO 12
#define SDMMC_PIN_CS   13
#define SDMMC_PIN_SCK  14
#define SDMMC_PIN_MOSI 15
/* ====================== */

/* MMC/SD command */
#define CMD0 (0)		   /* GO_IDLE_STATE */
#define CMD1 (1)		   /* SEND_OP_COND (MMC) */
#define ACMD41 (0x80 + 41) /* SEND_OP_COND (SDC) */
#define CMD8 (8)		   /* SEND_IF_COND */
#define CMD9 (9)		   /* SEND_CSD */
#define CMD10 (10)		   /* SEND_CID */
#define CMD12 (12)		   /* STOP_TRANSMISSION */
#define ACMD13 (0x80 + 13) /* SD_STATUS (SDC) */
#define CMD16 (16)		   /* SET_BLOCKLEN */
#define CMD17 (17)		   /* READ_SINGLE_BLOCK */
#define CMD18 (18)		   /* READ_MULTIPLE_BLOCK */
#define CMD23 (23)		   /* SET_BLOCK_COUNT (MMC) */
#define ACMD23 (0x80 + 23) /* SET_WR_BLK_ERASE_COUNT (SDC) */
#define CMD24 (24)		   /* WRITE_BLOCK */
#define CMD25 (25)		   /* WRITE_MULTIPLE_BLOCK */
#define CMD32 (32)		   /* ERASE_ER_BLK_START */
#define CMD33 (33)		   /* ERASE_ER_BLK_END */
#define CMD38 (38)		   /* ERASE */
#define CMD55 (55)		   /* APP_CMD */
#define CMD58 (58)		   /* READ_OCR */

#define SDMMC_SECT_SIZE 512

typedef struct {
    spi_inst_t *spiPort;
    bool spiInit;
    uint csPin;
    uint8_t cardType;
    uint16_t sectSize;
    uint32_t sectCount;
#ifdef __SPI_SDMMC_DMA
    uint read_dma_ch;
    uint write_dma_ch;
    dma_channel_config dma_rc;
    dma_channel_config dma_wc;
    bool dmaInit;
#endif
    uint8_t Stat;
}sdmmc_data_t;


uint8_t sdmmc_disk_initialize(spi_inst_t *spi, uint cs_pin, sdmmc_data_t *sdmmc);
//static 
int sdmmc_read_datablock (uint8_t *buff, uint btr, sdmmc_data_t *sdmmc);
//static 
int sdmmc_write_datablock (const uint8_t *buff, uint8_t token, sdmmc_data_t *sdmmc);
//static 
uint8_t sdmmc_send_cmd(uint8_t cmd,  uint32_t arg, sdmmc_data_t *sdmmc);
uint8_t sdmmc_write_sector(uint32_t sector, uint8_t *buff, uint32_t len, sdmmc_data_t *sdmmc);
uint8_t  sdmmc_read_sector(uint32_t sector, uint8_t* buff, uint32_t len, sdmmc_data_t *sdmmc);





/* MMC card type flags (MMC_GET_TYPE) */
#define CT_MMC3		0x01		/* MMC ver 3 */
#define CT_MMC4		0x02		/* MMC ver 4+ */
#define CT_MMC		0x03		/* MMC */
#define CT_SDC1		0x02		/* SDC ver 1 */
#define CT_SDC2		0x04		/* SDC ver 2+ */
#define CT_SDC		0x0C		/* SDC */
#define CT_BLOCK	0x10		/* Block addressing */




#endif 

• spi_sdmmc.c

/*
This library is derived from ChaN's FatFs - Generic FAT Filesystem Module.
*/
#include "stdio.h"
#include "stdlib.h"
#include "pico/stdlib.h"
#include "spi_sdmmc.h"
#include "storage_driver.h"


#define SDMMC_CD 0 // card detect
#define SDMMC_WP 0 // write protected

static uint8_t dummy_block[SDMMC_SECT_SIZE];

void sdmmc_spi_cs_high(sdmmc_data_t *sdmmc);
void sdmmc_spi_cs_low(sdmmc_data_t *sdmmc);
static int sdmmc_wait_ready(uint timeout, sdmmc_data_t *sdmmc);
static void sdmmc_init_spi(sdmmc_data_t *sdmmc);

static void sdmmc_deselect(sdmmc_data_t *sdmmc)
{
	uint8_t src = 0xFF;
	sdmmc_spi_cs_high(sdmmc);
	spi_write_blocking(sdmmc->spiPort, &src, 1);
}

/*-----------------------------------------------------------------------*/
/* Select card and wait for ready                                        */
/*-----------------------------------------------------------------------*/
static int sdmmc_select(sdmmc_data_t *sdmmc) /* 1:OK, 0:Timeout */
{
	uint8_t src = 0xFF;
	sdmmc_spi_cs_low(sdmmc);
	spi_write_blocking(sdmmc->spiPort, &src, 1);
	if (sdmmc_wait_ready(500, sdmmc))
		return 1; /* Wait for card ready */
	sdmmc_deselect(sdmmc);
	return 0; /* Timeout */
}

uint64_t sdmmc_get_sector_count(sdmmc_data_t *sdmmc) {
	uint8_t n, csd[16];
	uint32_t st, ed, csize;

	uint64_t sectorCounter;

	uint8_t src = 0xFF;
	
	if ((sdmmc_send_cmd(CMD9, 0, sdmmc) == 0) && sdmmc_read_datablock(csd, 16, sdmmc))
	{
		if ((csd[0] >> 6) == 1)
		{ /* SDC CSD ver 2 */
			csize = csd[9] + ((uint16_t)csd[8] << 8) + ((uint32_t)(csd[7] & 63) << 16) + 1;
			sectorCounter = csize << 10;
		}
		else
		{ /* SDC CSD ver 1 or MMC */
			n = (csd[5] & 15) + ((csd[10] & 128) >> 7) + ((csd[9] & 3) << 1) + 2;
			csize = (csd[8] >> 6) + ((uint16_t)csd[7] << 2) + ((uint16_t)(csd[6] & 3) << 10) + 1;
			sectorCounter = csize << (n - 9);
		}
	
	} else {
		sectorCounter=0;
	}
	sdmmc_deselect(sdmmc);
	return sectorCounter;
}

uint32_t sdmmc_get_block_count(sdmmc_data_t *sdmmc) {
	uint8_t n, csd[16];
	uint32_t st, ed, csize;

	uint32_t sectorCounter=0;

	uint8_t src = 0xFF;

	if (sdmmc->cardType & CT_SDC2)
	{ /* SDC ver 2+ */
		if (sdmmc_send_cmd(ACMD13, 0, sdmmc) == 0)
		{ /* Read SD status */
			spi_write_blocking(sdmmc->spiPort, &src, 1);
			if (sdmmc_read_datablock(csd, 16, sdmmc))
			{ /* Read partial block */
				for (n = 64 - 16; n; n--)
					spi_write_blocking(sdmmc->spiPort, &src, 1); // xchg_spi(0xFF);	/* Purge trailing data */
				sectorCounter = 16UL << (csd[10] >> 4);
			}
		}
	}
	else
	{ /* SDC ver 1 or MMC */
		if ((sdmmc_send_cmd(CMD9, 0, sdmmc) == 0) && sdmmc_read_datablock(csd, 16, sdmmc))
		{ /* Read CSD */
			if (sdmmc->cardType & CT_SDC1)
			{ /* SDC ver 1.XX */
				sectorCounter = (((csd[10] & 63) << 1) + ((uint16_t)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);
			}
			else
			{ /* MMC */
				sectorCounter = ((uint16_t)((csd[10] & 124) >> 2) + 1) * (((csd[11] & 3) << 3) + ((csd[11] & 224) >> 5) + 1);
			}

		}
	}
	sdmmc_deselect(sdmmc);
	return sectorCounter;
}

uint8_t  sdmmc_read_sector(uint32_t sector, uint8_t* buff, uint32_t len, sdmmc_data_t *sdmmc) {
	uint8_t ret=0;
	uint count;
	count = (len % sdmmc->sectSize)  ? ((len / sdmmc->sectSize) + 1) : (len / sdmmc->sectSize);
	
	if (!count)
		return ret; /* Check parameter */

	if (!(sdmmc->cardType & CT_BLOCK))
		sector *= sdmmc->sectSize; /* LBA ot BA conversion (byte addressing cards) */
	if (count == 1)
	{												  /* Single sector read */
		if ((sdmmc_send_cmd(CMD17, sector, sdmmc) == 0) /* READ_SINGLE_BLOCK */
			&& sdmmc_read_datablock(buff, sdmmc->sectSize, sdmmc))
		{
			ret = 1;
		}
led_blinking_task(); //// LED blinking
	}
	else
	{ /* Multiple sector read */
		if (sdmmc_send_cmd(CMD18, sector, sdmmc) == 0)
		{ /* READ_MULTIPLE_BLOCK */
			do
			{
				if (!sdmmc_read_datablock(buff, sdmmc->sectSize, sdmmc))
					break;
				buff += sdmmc->sectSize;
led_blinking_task(); //// LED blinking
			} while (--count);
			
			sdmmc_send_cmd(CMD12, 0, sdmmc); /* STOP_TRANSMISSION */
			ret = 1;
		}
	}
led_blinking_task_off();  //// LED blinking off
	sdmmc_deselect(sdmmc); // sdmmc_select() is called in function sdmmc_send_cmd()

	return ret;
}

uint8_t sdmmc_write_sector(uint32_t sector, uint8_t *buff, uint32_t len, sdmmc_data_t *sdmmc) {

	uint8_t ret=0;
	uint count;
	count = (len % sdmmc->sectSize)  ? ((len / sdmmc->sectSize)+1) : (len / sdmmc->sectSize);

	if (!count)
		return ret; /* Check parameter */
	//if (sdmmc->Stat & STA_NOINIT)
	//	return RES_NOTRDY; /* Check drive status */
	//if (sdmmc->Stat & STA_PROTECT)
	//	return RES_WRPRT; /* Check write protect */

	if (!(sdmmc->cardType & CT_BLOCK))
		sector *= sdmmc->sectSize; /* LBA ==> BA conversion (byte addressing cards) */

	if (count == 1)
	{												  /* Single sector write */
		if ((sdmmc_send_cmd(CMD24, sector, sdmmc) == 0) /* WRITE_BLOCK */
			&& sdmmc_write_datablock(buff, 0xFE, sdmmc))
		{
			ret = 1;
		}
led_blinking_task();  //// LED_blinking
	}
	else
	{ /* Multiple sector write */
		if (sdmmc->cardType & CT_SDC)
			sdmmc_send_cmd(ACMD23, count, sdmmc); /* Predefine number of sectors */
		if (sdmmc_send_cmd(CMD25, sector, sdmmc) == 0)
		{ /* WRITE_MULTIPLE_BLOCK */
			do
			{
				if (!sdmmc_write_datablock(buff, 0xFC, sdmmc))
					break;
				buff += sdmmc->sectSize;

led_blinking_task();  //// LED_blinking
			} while (--count);
			  // LED blinking off
			if (!sdmmc_write_datablock(0, 0xFD, sdmmc))
				count = 1; /* STOP_TRAN token */
			ret =1;
		}
	}
led_blinking_task_off();
	sdmmc_deselect(sdmmc); // sdmmc_select() is called in function sdmmc_send_cmd

}

/* sdmmc spi port initialize*/
void sdmmc_spi_port_init(sdmmc_data_t *sdmmc)
{
	spi_init(sdmmc->spiPort, SPI_BAUDRATE_LOW);
	gpio_set_function(SDMMC_PIN_MISO, GPIO_FUNC_SPI);
	gpio_set_function(sdmmc->csPin, GPIO_FUNC_SIO);
	gpio_set_function(SDMMC_PIN_SCK, GPIO_FUNC_SPI);
	gpio_set_function(SDMMC_PIN_MOSI, GPIO_FUNC_SPI);
	gpio_set_dir(sdmmc->csPin, GPIO_OUT);
	gpio_put(sdmmc->csPin, 1); // deselect

	sdmmc->spiInit = true; // alreadily initialized
}

/* config spi dma*/
#ifdef __SPI_SDMMC_DMA
void config_spi_dma(sdmmc_data_t *sdmmc)
{
	sdmmc->read_dma_ch = dma_claim_unused_channel(true);
	sdmmc->write_dma_ch = dma_claim_unused_channel(true);
	sdmmc->dma_rc = dma_channel_get_default_config(sdmmc->read_dma_ch);
	sdmmc->dma_wc = dma_channel_get_default_config(sdmmc->write_dma_ch);
	channel_config_set_transfer_data_size(&(sdmmc->dma_rc), DMA_SIZE_8);
	channel_config_set_transfer_data_size(&(sdmmc->dma_wc), DMA_SIZE_8);
	channel_config_set_read_increment(&(sdmmc->dma_rc), false);
	channel_config_set_write_increment(&(sdmmc->dma_rc), true);
	channel_config_set_read_increment(&(sdmmc->dma_wc), true);
	channel_config_set_write_increment(&(sdmmc->dma_wc), false);
	channel_config_set_dreq(&(sdmmc->dma_rc), spi_get_dreq(sdmmc->spiPort, false));
	channel_config_set_dreq(&(sdmmc->dma_wc), spi_get_dreq(sdmmc->spiPort, true));

	for (int i = 0; i < SDMMC_SECT_SIZE; i++)
		dummy_block[i] = 0xFF;

	dma_channel_configure(sdmmc->read_dma_ch,
						  &(sdmmc->dma_rc),
						  NULL,
						  &spi_get_hw(sdmmc->spiPort)->dr,
						  sdmmc->sectSize, false);
	dma_channel_configure(sdmmc->write_dma_ch,
						  &(sdmmc->dma_wc),
						  &spi_get_hw(sdmmc->spiPort)->dr,
						  NULL,
						  sdmmc->sectSize, false);
	sdmmc->dmaInit = true;
}
#endif

/* set spi cs low (select)*/
void sdmmc_spi_cs_low(sdmmc_data_t *sdmmc)
{
	gpio_put(sdmmc->csPin, 0);
}
/* set spi cs high (deselect)*/
void sdmmc_spi_cs_high(sdmmc_data_t *sdmmc)
{
	gpio_put(sdmmc->csPin, 1);
}
/* Initialize SDMMC SPI interface */
static void sdmmc_init_spi(sdmmc_data_t *sdmmc)
{
	sdmmc_spi_port_init(sdmmc); // if not initialized, init it
#ifdef __SPI_SDMMC_DMA
	if (!sdmmc->dmaInit)
		config_spi_dma(sdmmc);
#endif

	sleep_ms(10);
}

/* Receive a sector data (512 uint8_ts) */
static void sdmmc_read_spi_dma(
	uint8_t *buff, /* Pointer to data buffer */
	uint btr,	/* Number of uint8_ts to receive (even number) */
	sdmmc_data_t *sdmmc)
{
#ifdef __SPI_SDMMC_DMA
	dma_channel_set_read_addr(sdmmc->write_dma_ch, dummy_block, false);
	dma_channel_set_trans_count(sdmmc->write_dma_ch, btr, false);

	dma_channel_set_write_addr(sdmmc->read_dma_ch, buff, false);
	dma_channel_set_trans_count(sdmmc->read_dma_ch, btr, false);

	dma_start_channel_mask((1u << (sdmmc->read_dma_ch)) | (1u << (sdmmc->write_dma_ch)));
	dma_channel_wait_for_finish_blocking(sdmmc->read_dma_ch);
#else
	spi_read_blocking(sdmmc->spiPort, 0xFF, buff, btr);
#endif
}


/* Send a sector data (512 uint8_ts) */
static void sdmmc_write_spi_dma(
	const uint8_t *buff, /* Pointer to the data */
	uint btx,		  /* Number of uint8_ts to send (even number) */
	sdmmc_data_t *sdmmc)
{
#ifdef __SPI_SDMMC_DMA
	dma_channel_set_read_addr(sdmmc->write_dma_ch, buff, false);
	dma_channel_set_trans_count(sdmmc->write_dma_ch, btx, false);
	dma_channel_start(sdmmc->write_dma_ch);
	dma_channel_wait_for_finish_blocking(sdmmc->write_dma_ch);
#else
	spi_write_blocking(sdmmc->spiPort, buff, btx);
#endif
}


/*-----------------------------------------------------------------------*/
/* Wait for card ready                                                   */
/*-----------------------------------------------------------------------*/
static int sdmmc_wait_ready(uint timeout, sdmmc_data_t *sdmmc)
{
	uint8_t dst;
	absolute_time_t timeout_time = make_timeout_time_ms(timeout);
	do
	{
		spi_read_blocking(sdmmc->spiPort, 0xFF, &dst, 1);
	} while (dst != 0xFF && 0 < absolute_time_diff_us(get_absolute_time(), timeout_time)); /* Wait for card goes ready or timeout */

	return (dst == 0xFF) ? 1 : 0;
}

/*-----------------------------------------------------------------------*/
/* Deselect card and release SPI                                         */
/*-----------------------------------------------------------------------*/


/*-----------------------------------------------------------------------*/
/* Receive a data packet from the MMC                                    */
/*-----------------------------------------------------------------------*/
// static
int sdmmc_read_datablock(			 /* 1:OK, 0:Error */
						 uint8_t *buff, /* Data buffer */
						 uint btr,	 /* Data block length (uint8_t) */
						 sdmmc_data_t *sdmmc)
{
	uint8_t token;
	absolute_time_t timeout_time = make_timeout_time_ms(200);
	do
	{ /* Wait for DataStart token in timeout of 200ms */
		spi_read_blocking(sdmmc->spiPort, 0xFF, &token, 1);
		
	} while ((token == 0xFF) && 0 < absolute_time_diff_us(get_absolute_time(), timeout_time));
	if (token != 0xFE)
		return 0; /* Function fails if invalid DataStart token or timeout */

	sdmmc_read_spi_dma(buff, btr, sdmmc);
	// Discard CRC
	spi_read_blocking(sdmmc->spiPort, 0xFF, &token, 1);
	spi_read_blocking(sdmmc->spiPort, 0xFF, &token, 1);
	return 1; // Function succeeded
}

/*-----------------------------------------------------------------------*/
/* Send a data packet to the MMC                                         */
/*-----------------------------------------------------------------------*/
//#if FF_FS_READONLY == 0
// static
int sdmmc_write_datablock(					/* 1:OK, 0:Failed */
						  const uint8_t *buff, /* Ponter to 512 uint8_t data to be sent */
						  uint8_t token,		/* Token */
						  sdmmc_data_t *sdmmc)
{
	uint8_t resp;
	if (!sdmmc_wait_ready(500, sdmmc))
		return 0; /* Wait for card ready */
	// Send token : 0xFE--single block, 0xFC -- multiple block write start, 0xFD -- StopTrans
	spi_write_blocking(sdmmc->spiPort, &token, 1);
	if (token != 0xFD)
	{										   /* Send data if token is other than StopTran */
		sdmmc_write_spi_dma(buff, sdmmc->sectSize, sdmmc); /* Data */

		token = 0xFF;
		spi_write_blocking(sdmmc->spiPort, &token, 1); // Dummy CRC
		spi_write_blocking(sdmmc->spiPort, &token, 1);

		spi_read_blocking(sdmmc->spiPort, 0xFF, &resp, 1);
		// receive response token: 0x05 -- accepted, 0x0B -- CRC error, 0x0C -- Write Error
		if ((resp & 0x1F) != 0x05)
			return 0; /* Function fails if the data packet was not accepted */
	}
	return 1;
}
//#endif

/*-----------------------------------------------------------------------*/
/* Send a command packet to the MMC                                      */
/*-----------------------------------------------------------------------*/
//static
uint8_t sdmmc_send_cmd(			  /* Return value: R1 resp (bit7==1:Failed to send) */
						   uint8_t cmd,  /* Command index */
						   uint32_t arg, /* Argument */
						   sdmmc_data_t *sdmmc)
{
	uint8_t n, res;
	uint8_t tcmd[5];

	if (cmd & 0x80)
	{ /* Send a CMD55 prior to ACMD<n> */
		cmd &= 0x7F;
		res = sdmmc_send_cmd(CMD55, 0, sdmmc);
		if (res > 1)
			return res;
	}

	/* Select the card and wait for ready except to stop multiple block read */
	if (cmd != CMD12)
	{
		sdmmc_deselect(sdmmc);
		if (!sdmmc_select(sdmmc))
			return 0xFF;
	}

	/* Send command packet */
	tcmd[0] = 0x40 | cmd;		 // 0 1 cmd-index(6) --> 01xxxxxx(b)
	tcmd[1] = (uint8_t)(arg >> 24); // 32 bits argument
	tcmd[2] = (uint8_t)(arg >> 16);
	tcmd[3] = (uint8_t)(arg >> 8);
	tcmd[4] = (uint8_t)arg;
	spi_write_blocking(sdmmc->spiPort, tcmd, 5);
	n = 0x01; /* Dummy CRC + Stop */
	if (cmd == CMD0)
		n = 0x95; /* Valid CRC for CMD0(0) */
	if (cmd == CMD8)
		n = 0x87; /* Valid CRC for CMD8(0x1AA) */

	spi_write_blocking(sdmmc->spiPort, &n, 1);

	/* Receive command resp */
	if (cmd == CMD12)
		spi_read_blocking(sdmmc->spiPort, 0xFF, &res, 1); /* Diacard following one uint8_t when CMD12 */
	n = 10;												  /* Wait for response (10 uint8_ts max) */
	do
	{
		spi_read_blocking(sdmmc->spiPort, 0xFF, &res, 1);
	} while ((res & 0x80) && --n);

	return res; /* Return received response */
}

/*-----------------------------------------------------------------------*/
/* Initialize disk drive                                                 */
/*-----------------------------------------------------------------------*/
uint8_t sdmmc_init(sdmmc_data_t *sdmmc)
{
	uint8_t n, cmd, ty, src, ocr[4];

	sdmmc->Stat = 0;
	// low baudrate
	spi_set_baudrate(sdmmc->spiPort, SPI_BAUDRATE_LOW);
	src = 0xFF;
	sdmmc_spi_cs_low(sdmmc);
	for (n = 10; n; n--)
		spi_write_blocking(sdmmc->spiPort, &src, 1); // Send 80 dummy clocks
	sdmmc_spi_cs_high(sdmmc);

	ty = 0;
	if (sdmmc_send_cmd(CMD0, 0, sdmmc) == 1)
	{ /* Put the card SPI/Idle state, R1 bit0=1*/
		absolute_time_t timeout_time = make_timeout_time_ms(1000);
		if (sdmmc_send_cmd(CMD8, 0x1AA, sdmmc) == 1)
		{													 /* SDv2? */
			spi_read_blocking(sdmmc->spiPort, 0xFF, ocr, 4); // R7(5 uint8_ts): R1 read by sdmmc_send_cmd, Get the other 32 bit return value of R7 resp
			if (ocr[2] == 0x01 && ocr[3] == 0xAA)
			{ /* Is the card supports vcc of 2.7-3.6V? */
				while ((0 < absolute_time_diff_us(get_absolute_time(), timeout_time)) && sdmmc_send_cmd(ACMD41, 1UL << 30, sdmmc))
					; /* Wait for end of initialization with ACMD41(HCS) */
				if ((0 < absolute_time_diff_us(get_absolute_time(), timeout_time)) && sdmmc_send_cmd(CMD58, 0, sdmmc) == 0)
				{ /* Check CCS bit in the OCR */
					spi_read_blocking(sdmmc->spiPort, 0xFF, ocr, 4);
					ty = (ocr[0] & 0x40) ? CT_SDC2 | CT_BLOCK : CT_SDC2; /* Card id SDv2 */
				}
			}
		}
		else
		{ /* Not SDv2 card */
			if (sdmmc_send_cmd(ACMD41, 0, sdmmc) <= 1)
			{ /* SDv1 or MMC? */
				ty = CT_SDC1;
				cmd = ACMD41; /* SDv1 (ACMD41(0)) */
			}
			else
			{
				ty = CT_MMC3;
				cmd = CMD1; /* MMCv3 (CMD1(0)) */
			}
			while ((0 < absolute_time_diff_us(get_absolute_time(), timeout_time)) && sdmmc_send_cmd(cmd, 0, sdmmc))
				;																										   /* Wait for end of initialization */
			if (!(0 < absolute_time_diff_us(get_absolute_time(), timeout_time)) || sdmmc_send_cmd(CMD16, SDMMC_SECT_SIZE, sdmmc) != 0) /* Set block length: 512 */
				ty = 0;
		}
	}
	sdmmc->cardType = ty; /* Card type */
	sdmmc_deselect(sdmmc);
	if (ty)
	{ /* OK */
		// high baudrate
		printf("\nThe actual baudrate(SD/MMC):%d\n",spi_set_baudrate(sdmmc->spiPort, SPI_BAUDRATE_HIGH)); // speed high
		sdmmc->sectSize = SDMMC_SECT_SIZE;
		sdmmc->Stat = 1; /* Clear STA_NOINIT flag */
	}
	else
	{ /* Failed */
		sdmmc->Stat = 0;
	}
	sdmmc->sectCount = sdmmc_get_sector_count(sdmmc);
	return sdmmc->Stat;
}
/////////////////////////////////////////////
uint8_t sdmmc_disk_initialize(spi_inst_t *spi, uint cs_pin, sdmmc_data_t *sdmmc)
{
	sdmmc->spiPort = spi;
    sdmmc->csPin = cs_pin;
	if (!sdmmc->spiInit) {
		sdmmc_init_spi(sdmmc); /* Initialize SPI */
	}
	uint8_t stat = sdmmc_init(sdmmc);

	return stat;
}

• W25Q.h

#ifndef W25Q_H
#define W25Q_H
#include "stdio.h"
#include "stdlib.h"
#include "pico/stdlib.h"
#include "hardware/spi.h"


/* W25Q SPI pins*/
#define W25Q_SPI_PORT spi0
#define W25Q_PIN_MISO 16
#define W25Q_PIN_SCK  18
#define W25Q_PIN_MOSI 19
#define W25Q_PIN_CS 17
/* ====================== */

typedef struct{
    spi_inst_t *spi;
    uint        cs_pin;
    uint8_t     uuid[8];
    uint32_t    jedec_id;

    uint32_t    blockCount;
    uint32_t    blockSize;
    
    uint32_t    sectorCount;
    uint32_t    sectorSize;

    uint32_t    pageCount;
    uint16_t    pageSize;
    
    uint8_t     statusRegister1;
    uint8_t     statusRegister2;
    uint8_t     statusRegister3;
    uint32_t    capacityKB;
    uint8_t     lock;
    bool        spiInit;
    uint8_t     Stat;
}w25q_data_t;


uint8_t w25q_disk_initialize(spi_inst_t *spi, uint cs_pin, w25q_data_t *w25q);
void w25q_get_manufacter_device_id(uint8_t *mid, w25q_data_t *w25q);
void w25q_get_JEDEC_ID(w25q_data_t *w25q);
void w25q_erase_chip(w25q_data_t *w25q);
void w25q_page_program(uint32_t page_addr, uint16_t offset, uint8_t *buf, uint32_t len, w25q_data_t *w25q);
void w25q_write_sector(uint32_t sect_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q);
void w25q_write_block_64k(uint32_t blk_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q);
void w25q_read_bytes(uint32_t address, uint8_t *buf, uint32_t len, w25q_data_t *w25q);
void w25q_read_page(uint32_t page_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q);
uint8_t w25q_read_sector(uint32_t sect_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q);
void w25q_read_block(uint32_t blk_addr, uint32_t offset, uint8_t *buf, uint32_t len, w25q_data_t *w25q);
//void w25q_read_data(uint32_t address, uint8_t *buf, uint32_t len);
//void w25q_fast_read_data(uint32_t address, uint8_t *buf, uint32_t len);
void w25q_read_status_register_1(w25q_data_t *w25q);
void w25q_read_status_register_2(w25q_data_t *w25q);
void w25q_read_status_register_3(w25q_data_t *w25q);
void w25q_write_status_register_1(w25q_data_t *w25q);
void w25q_write_status_register_2(w25q_data_t *w25q);
void w25q_write_status_register_3(w25q_data_t *w25q);
void w25q_sector_erase(uint32_t sect_addr, w25q_data_t *w25q);
void w25q_block_erase_32k(uint32_t blk_addr,w25q_data_t *w25q);
void w25q_block_erase_64k(uint32_t blk_addr, w25q_data_t *w25q);
void w25q_get_uid(w25q_data_t *w25q);
void w25q_write_enable(w25q_data_t *w25q);
void w25q_write_diable(w25q_data_t *w25q);

#endif

• W25Q.c

#include "stdio.h"
#include "stdlib.h"
#include "W25Q.h"
#include "storage_driver.h"

uint8_t rxbuf[10];
uint8_t txbuf[10];

/*=================*/

const uint8_t i_uniqueid=0x4b;
const uint8_t i_page_program=0x02;
const uint8_t i_read_data=0x03;
const uint8_t i_fast_read_data=0x0b;
const uint8_t i_write_disable=0x04;
const uint8_t i_read_status_r1=0x05;
const uint8_t i_read_status_r2=0x35;
const uint8_t i_read_status_r3=0x15;
const uint8_t i_write_status_r1=0x01;
const uint8_t i_write_status_r2=0x31;
const uint8_t i_write_status_r3=0x11;
const uint8_t i_sector_erase=0x20;
const uint8_t i_block_erase_32k=0x52;
const uint8_t i_block_erase_64k=0xd8;
const uint8_t i_write_enable=0x06;
const uint8_t i_erase_chip=0xc7;

const uint8_t i_device_id=0x90;
const uint8_t i_JEDEC_ID=0x9f;

void w25q_spi_port_init(w25q_data_t *w25q) {
    gpio_set_dir(w25q->cs_pin, GPIO_OUT);
    gpio_put(w25q->cs_pin, 1);
    gpio_set_function(w25q->cs_pin,   GPIO_FUNC_SIO);
    gpio_set_function(W25Q_PIN_MISO, GPIO_FUNC_SPI);
    gpio_set_function(W25Q_PIN_SCK,  GPIO_FUNC_SPI);
    gpio_set_function(W25Q_PIN_MOSI, GPIO_FUNC_SPI);
        
    printf("\nThe actual baudrate(W25Q):%d\n",spi_init(w25q->spi, SPI_BAUDRATE_HIGH));

    w25q->spiInit=true;
}

void w25q_spi_cs_low(w25q_data_t *w25q) {
    gpio_put(w25q->cs_pin,0);
}
void w25q_spi_cs_high(w25q_data_t *w25q){
    gpio_put(w25q->cs_pin,1);
}
void w25q_send_cmd_read(uint8_t cmd, uint32_t address, uint8_t *buf, uint32_t len, bool is_fast, w25q_data_t *w25q) {
    uint8_t addr[4];
    int addr_len=3;
    addr[3] = 0x00;
    if (is_fast) addr_len=4;
    addr[0] = (address & 0x00ff0000) >> 16;
    addr[1] = (address & 0x0000ff00) >> 8;
    addr[2] = (address & 0x000000ff);
    w25q_spi_cs_low(w25q);
    spi_write_blocking(w25q->spi, &cmd, 1);
    spi_write_blocking(w25q->spi, addr, addr_len);
    spi_read_blocking(w25q->spi, 0x00, buf, len);
    w25q_spi_cs_high(w25q);
}

void w25q_send_cmd_write(uint8_t cmd, uint32_t address, uint8_t *buf, uint32_t len, w25q_data_t *w25q) {
    uint8_t addr[3];
    
    addr[0] = (address & 0x00ff0000) >> 16;
    addr[1] = (address & 0x0000ff00) >> 8;
    addr[2] = (address & 0x000000ff);
    w25q_write_enable(w25q);
    w25q_spi_cs_low(w25q);
    spi_write_blocking(w25q->spi, &cmd, 1);
    spi_write_blocking(w25q->spi, addr, 3);
    spi_write_blocking(w25q->spi, buf, len);
    w25q_spi_cs_high(w25q);

}

void w25q_send_cmd_addr(uint8_t cmd, uint32_t address, w25q_data_t *w25q) {
    uint8_t addr[3];
    addr[0] = (address & 0x00ff0000) >> 16;
    addr[1] = (address & 0x0000ff00) >> 8;
    addr[2] = (address & 0x000000ff);
    w25q_spi_cs_low(w25q);
    spi_write_blocking(w25q->spi, &cmd, 1);
    spi_write_blocking(w25q->spi, addr, 3);
    w25q_spi_cs_high(w25q);
}

void w25q_send_cmd(uint8_t cmd, uint8_t *buf, uint32_t len, w25q_data_t *w25q) {
    w25q_spi_cs_low(w25q);
    spi_write_blocking(w25q->spi, &cmd, 1);
    spi_read_blocking(w25q->spi, 0x00, buf, len);
    w25q_spi_cs_high(w25q);
}

void w25q_send_simple_cmd(uint8_t cmd, w25q_data_t *w25q) {
    w25q_spi_cs_low(w25q);
    spi_write_blocking(w25q->spi, &cmd, 1);
    w25q_spi_cs_high(w25q);
}

void w25q_write_enable(w25q_data_t *w25q) {
    w25q_send_simple_cmd(i_write_enable, w25q);
    sleep_ms(1);
}
void w25q_write_disable(w25q_data_t *w25q) {
    w25q_send_simple_cmd(i_write_disable, w25q);
    sleep_ms(1);
}

/*==================*/
uint8_t w25q_disk_initialize(spi_inst_t *spi, uint cs_pin, w25q_data_t *w25q) {
    w25q->spi = spi;
    w25q->cs_pin = cs_pin;

    if (!w25q->spiInit) w25q_spi_port_init(w25q);

    w25q_get_JEDEC_ID(w25q);
    w25q->lock = 1;
	sleep_ms(100);
	switch (w25q->jedec_id & 0x000000FF)
	{
	    case 0x20: // 	w25q512
		    w25q->blockCount = 1024;
		break;
	    case 0x19: // 	w25q256
		    w25q->blockCount = 512;
		break;
	    case 0x18: // 	w25q128
		    w25q->blockCount = 256;
		break;
	    case 0x17: //	w25q64
		    w25q->blockCount = 128;
		break;
	    case 0x16: //	w25q32
		    w25q->blockCount = 64;
		break;
        case 0x15: //	w25q16
            w25q->blockCount = 32;
            break;
        case 0x14: //	w25q80
            w25q->blockCount = 16;
            break;
        case 0x13: //	w25q40
            w25q->blockCount = 8;
        case 0x12: //	w25q20
            w25q->blockCount = 4;
            break;
        case 0x11: //	w25q10
            w25q->blockCount = 2;
            break;
        default:
            w25q->lock = 0;
            return false;
    }
	w25q->pageSize = 256;
	w25q->sectorSize = 0x1000;
	w25q->sectorCount = w25q->blockCount * 16;
	w25q->pageCount = (w25q->sectorCount * w25q->sectorSize) / w25q->pageSize;
	w25q->blockSize = w25q->sectorSize * 16;
	w25q->capacityKB = (w25q->sectorCount * w25q->sectorSize) / 1024;
	w25q_get_uid(w25q);
    w25q_read_status_register_1(w25q);
    w25q_read_status_register_2(w25q);
    w25q_read_status_register_3(w25q);
	w25q->lock = 0;
    w25q->Stat = 0;
	return w25q->Stat;
}


void w25q_read_status_register_1(w25q_data_t *w25q){
    w25q_send_cmd(i_read_status_r1, &w25q->statusRegister1, 1, w25q);
}
void w25q_read_status_register_2(w25q_data_t *w25q){
    w25q_send_cmd(i_read_status_r2, &w25q->statusRegister2, 1, w25q);
}
void w25q_read_status_register_3(w25q_data_t *w25q){
    w25q_send_cmd(i_read_status_r3, &w25q->statusRegister3, 1, w25q);
}

void w25q_write_status_register_1(w25q_data_t *w25q){
    w25q_send_cmd(i_write_status_r1, &w25q->statusRegister1, 1, w25q);
}
void w25q_write_status_register_2(w25q_data_t *w25q){
    w25q_send_cmd(i_write_status_r2, &w25q->statusRegister2, 1, w25q);
}
void w25q_write_status_register_3(w25q_data_t *w25q){
    w25q_send_cmd(i_write_status_r3, &w25q->statusRegister3, 1, w25q);
}

void w25q_wait_for_write_end(w25q_data_t *w25q)
{
	sleep_ms(1);
	w25q_spi_cs_low(w25q);
	spi_write_blocking(w25q->spi, &i_read_status_r1,1);
	do
	{
		spi_read_blocking(w25q->spi, 0x00, &w25q->statusRegister1,1);
		sleep_ms(1);
	} while ((w25q->statusRegister1 & 0x01) == 0x01);
	w25q_spi_cs_high(w25q);
}

void w25q_erase_chip(w25q_data_t *w25q) {
    while (w25q->lock) sleep_ms(1);
    w25q->lock=1;
    w25q_write_enable(w25q);
    w25q_send_simple_cmd(i_erase_chip, w25q);
    w25q_wait_for_write_end(w25q);
    sleep_ms(10);
    w25q->lock=0;
}

void w25q_page_program(uint32_t page_addr, uint16_t offset, uint8_t *buf, uint32_t len, w25q_data_t *w25q) {
    while (w25q->lock) sleep_ms(1);
    w25q->lock=1;
    if (offset + len > w25q->pageSize) {
        len = w25q->pageSize - offset;
    }
    page_addr = (page_addr * w25q->pageSize) + offset;
    w25q_wait_for_write_end(w25q);
    w25q_write_enable(w25q);
    w25q_send_cmd_write(i_page_program, page_addr, buf, len, w25q);
    w25q_wait_for_write_end(w25q);
    sleep_ms(1);
    w25q->lock=0;
}
/*===========================*/
uint32_t w25_page_to_sector_address(uint32_t pageAddress, w25q_data_t *w25q)
{
	return ((pageAddress * w25q->pageSize) / w25q->sectorSize);
}
uint32_t w25q_page_to_block_address(uint32_t pageAddress, w25q_data_t *w25q)
{
	return ((pageAddress * w25q->pageSize) / w25q->blockSize);
}
uint32_t w25q_data_sector_to_block_address(uint32_t sectorAddress, w25q_data_t *w25q)
{
	return ((sectorAddress * w25q->sectorSize) / w25q->blockSize);
}
uint32_t w25q_sector_to_page_address(uint32_t sectorAddress, w25q_data_t *w25q)
{
	return (sectorAddress * w25q->sectorSize) / w25q->pageSize;
}
uint32_t w25q_block_to_page_address(uint32_t blockAddress, w25q_data_t *w25q)
{
	return (blockAddress * w25q->blockSize) / w25q->pageSize;
}
/*============================*/

void w25q_write_sector(uint32_t sect_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q) {
	if (offset >= w25q->sectorSize) return;
    if (offset + len  > w25q->sectorSize) 
		len = w25q->sectorSize - offset;
	uint32_t startPage;
	int32_t bytesToWrite;
	uint32_t localOffset;


    startPage = w25q_sector_to_page_address(sect_addr, w25q) + (offset / w25q->pageSize);
	localOffset = offset % w25q->pageSize;
    bytesToWrite = len;

	do
	{
        w25q_page_program(startPage, localOffset, buf, bytesToWrite, w25q);
		startPage++;
		bytesToWrite -= w25q->pageSize - localOffset;
		buf += w25q->pageSize - localOffset;
		localOffset = 0;
led_blinking_task();

	} while (bytesToWrite > 0);
led_blinking_task_off();

}

void w25q_write_block_64k(uint32_t blk_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q) {
	if ((len > w25q->blockSize) || (len == 0))
		len = w25q->blockSize;
	if (offset >= w25q->blockSize)
		return;
	uint32_t startPage;
	int32_t bytesToWrite;
	uint32_t localOffset;
	if ((offset + len) > w25q->blockSize)
		bytesToWrite = w25q->blockSize - offset;
	else
		bytesToWrite = len;
	startPage = w25q_block_to_page_address(blk_addr, w25q) + (offset / w25q->pageSize);
	localOffset = offset % w25q->pageSize;
	do
	{
		w25q_page_program(startPage, localOffset, buf, len, w25q);
		startPage++;
		bytesToWrite -= w25q->pageSize - localOffset;
		buf += w25q->pageSize - localOffset;
		localOffset = 0;
	} while (bytesToWrite > 0);
   
}

uint8_t w25q_disk_write(
	const uint8_t *buff,	/* Ponter to the data to write */
	uint64_t sector,		/* Start sector number (LBA) */
	uint count, 			/* Number of sectors to write (1..128) */
    w25q_data_t *w25q
) 
{
    uint8_t *tbuf=(uint8_t*)buff;
    while(count > 1)
    {
        w25q_sector_erase(sector, w25q);
        w25q_write_sector(sector, 0, tbuf, w25q->sectorSize, w25q);
        count--;
        tbuf += w25q->sectorSize;
        sector++;
    }
    if (count == 1)
    {
        w25q_sector_erase(sector, w25q);
        w25q_write_sector(sector, 0, tbuf, w25q->sectorSize, w25q);
        count--;
    }
	
	return count? 1: 0;
}

void w25q_read_bytes(uint32_t address, uint8_t *buf, uint32_t len, w25q_data_t *w25q) {
	while (w25q->lock == 1) sleep_ms(1);
	w25q->lock = 1;
    w25q_send_cmd_read(i_fast_read_data, address, buf, len, true, w25q);
	sleep_ms(1);
	w25q->lock = 0;
}

void w25q_read_page(uint32_t page_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q) {
	while (w25q->lock == 1) sleep_ms(1);
	w25q->lock = 1;
    if (offset >= w25q->pageSize) return;
	if ((offset + len) >= w25q->pageSize)
		len = w25q->pageSize - offset;
	page_addr = page_addr * w25q->pageSize + offset;
    w25q_send_cmd_read(i_fast_read_data, page_addr, buf, len, true, w25q);
	
	sleep_ms(1);
	w25q->lock = 0;
}

uint8_t w25q_read_sector(uint32_t sect_addr, uint32_t offset, uint8_t *buf,  uint32_t len, w25q_data_t *w25q) {
	
    if (offset >= w25q->sectorSize) return 0;
    if (offset + len > w25q->sectorSize)
		len = w25q->sectorSize - offset;
	uint32_t startPage;
	int32_t bytesToRead;
	uint32_t localOffset;
    bytesToRead = len;
	
    startPage = w25q_sector_to_page_address(sect_addr, w25q) + (offset / w25q->pageSize);
	localOffset = offset % w25q->pageSize;
	do
	{
		w25q_read_page(startPage, localOffset, buf, bytesToRead, w25q);
    
		startPage++;
		bytesToRead -= w25q->pageSize - localOffset;
		buf += w25q->pageSize - localOffset;
		localOffset = 0;
led_blinking_task();

	} while (bytesToRead > 0);
led_blinking_task_off();

    return 1;

}
void w25q_read_block(uint32_t blk_addr, uint32_t offset, uint8_t *buf, uint32_t len, w25q_data_t *w25q) {
	if (offset+len > w25q->blockSize)
		len = w25q->blockSize-offset;

	uint32_t startPage;
	int32_t bytesToRead;
	uint32_t localOffset;
    bytesToRead = len;

	startPage = w25q_block_to_page_address(blk_addr, w25q) + (offset / w25q->pageSize);
	localOffset = offset % w25q->pageSize;
	do
	{
		w25q_read_page(startPage, localOffset, buf, bytesToRead, w25q);
		startPage++;
		bytesToRead -= w25q->pageSize - localOffset;
		buf += w25q->pageSize - localOffset;
		localOffset = 0;
	} while (bytesToRead > 0);

}


void w25q_sector_erase(uint32_t sect_addr, w25q_data_t *w25q) {
    while(w25q->lock) sleep_ms(1);
    w25q->lock=1;
    sect_addr = sect_addr * w25q->sectorSize;
    w25q_wait_for_write_end(w25q);
    w25q_write_enable(w25q);
    w25q_send_cmd_addr(i_sector_erase, sect_addr, w25q);
    w25q_wait_for_write_end(w25q);
    sleep_ms(1);
    w25q->lock=0;
}
void w25q_block_erase_32k(uint32_t blk_addr, w25q_data_t *w25q) {
    while(w25q->lock) sleep_ms(1);
    w25q->lock=1;
    blk_addr = blk_addr * w25q->sectorSize * 8;
    w25q_wait_for_write_end(w25q);
    w25q_write_enable(w25q);
    w25q_send_cmd_addr(i_block_erase_32k, blk_addr, w25q);
    w25q_wait_for_write_end(w25q);
    sleep_ms(1);
    w25q->lock=0;
}
void w25q_block_erase_64k(uint32_t blk_addr, w25q_data_t *w25q) {
    while(w25q->lock) sleep_ms(1);
    w25q->lock=1;
    blk_addr = blk_addr * w25q->sectorSize * 16;
    w25q_wait_for_write_end(w25q);
    w25q_write_enable(w25q);
    w25q_send_cmd_addr(i_block_erase_64k, blk_addr, w25q);
    w25q_wait_for_write_end(w25q);
    sleep_ms(1);
    w25q->lock=0;
}
void w25q_get_manufacter_device_id(uint8_t *mid, w25q_data_t *w25q){
    assert(w25q->spi);
    w25q_send_cmd_read(i_device_id, 0x000000, mid, 2, false, w25q);
}

void w25q_get_JEDEC_ID(w25q_data_t *w25q) {
    uint8_t temp[3];
    w25q_send_cmd(i_JEDEC_ID, temp, 3, w25q);
    w25q->jedec_id = ((uint32_t)temp[0] << 16) | ((uint32_t)temp[1] << 8) | (uint32_t)temp[2];
}
void w25q_get_uid(w25q_data_t *w25q) {
    assert(w25q->spi);
    txbuf[0]= 0x4b;
    txbuf[1] = 0x00; txbuf[2] = 0x00; txbuf[3] = 0x00;txbuf[4]=0x00;
    w25q_spi_cs_low(w25q);
    spi_write_blocking(w25q->spi, txbuf, 5);
    spi_read_blocking(w25q->spi, 0x00, w25q->uuid, 8);
    w25q_spi_cs_high(w25q);
}

• main.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "pico/stdlib.h"

#include "bsp/board.h"
#include "tusb.h"

#include "storage_driver.h"


/*------------- MAIN -------------*/
int main(void)
{
  stdio_init_all();

  storage_driver_init();

  board_init();

  // init device stack on configured roothub port
  tud_init(BOARD_TUD_RHPORT);
 

  while (1)
  {
    tud_task(); // tinyusb device task
  }

  return 0;
}

• CMakeLists.txt(root)

# Generated Cmake Pico project file

cmake_minimum_required(VERSION 3.13)

set(CMAKE_C_STANDARD 11)
set(CMAKE_CXX_STANDARD 17)

# Initialise pico_sdk from installed location
# (note this can come from environment, CMake cache etc)
set(PICO_SDK_PATH "/home/duser/pico/pico-sdk")

set(PICO_BOARD pico CACHE STRING "Board type")

# Pull in Raspberry Pi Pico SDK (must be before project)
include(pico_sdk_import.cmake)

if (PICO_SDK_VERSION_STRING VERSION_LESS "1.4.0")
  message(FATAL_ERROR "Raspberry Pi Pico SDK version 1.4.0 (or later) required. Your version is ${PICO_SDK_VERSION_STRING}")
endif()

project(pico_usb_msc_device C CXX ASM)

# Initialise the Raspberry Pi Pico SDK
pico_sdk_init()

# Add executable. Default name is the project name, version 0.1

add_executable(pico_usb_msc_device 
      main.c
      usb_descriptors.c )

pico_set_program_name(pico_usb_msc_device "pico_usb_msc_device")
pico_set_program_version(pico_usb_msc_device "0.1")

pico_enable_stdio_uart(pico_usb_msc_device 1)
pico_enable_stdio_usb(pico_usb_msc_device 0)

# Add the standard library to the build
target_link_libraries(pico_usb_msc_device
        pico_stdlib)

# Add the standard include files to the build
target_include_directories(pico_usb_msc_device PRIVATE
  ${CMAKE_CURRENT_LIST_DIR}
  ${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts or any other standard includes, if required
)

add_subdirectory(storage_driver)
# Add any user requested libraries
target_link_libraries(pico_usb_msc_device 
        tinyusb_device 
        tinyusb_board
        storage_driver
        )

pico_add_extra_outputs(pico_usb_msc_device)