the fatfs example is work ,but dont work in my project

Question

/**
 * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
/** @file
 * @defgroup fatfs_example_main main.c
 * @{
 * @ingroup fatfs_example
 * @brief FATFS Example Application main file.
 *
 * This file contains the source code for a sample application using FAT filesystem and SD card library.
 *
 */

#include "bsp.h"
#include "diskio_blkdev.h"
#include "ff.h"
#include "nrf.h"
#include "nrf_block_dev_sdc.h"

#include "app_usbd.h"
#include "app_usbd_cdc_acm.h"
#include "app_usbd_core.h"
#include "app_usbd_serial_num.h"
#include "app_usbd_string_desc.h"
#include "nrf_drv_usbd.h"
#include "nrf_gpio.h"

#include "nrf_drv_clock.h"
#include "nrf_drv_gpiote.h"

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"

#define SDC_SCK_PIN NRF_GPIO_PIN_MAP(1, 13)  ///< SDC serial clock (SCK) pin.
#define SDC_MOSI_PIN NRF_GPIO_PIN_MAP(1, 15) ///< SDC serial data in (DI) pin.
#define SDC_MISO_PIN NRF_GPIO_PIN_MAP(0, 2)  ///< SDC serial data out (DO) pin.
#define SDC_CS_PIN NRF_GPIO_PIN_MAP(1, 10)   ///< SDC chip select (CS) pin.

// #define BUTTON_1 NRF_GPIO_PIN_MAP(1, 6)
#define TEST_TIME_DELAY NRF_GPIO_PIN_MAP(0, 13)

#define FILE_NAME "NORDIC.TXT"
#define TEST_STRING "Hello world."

#define LED_USB_RESUME (BSP_BOARD_LED_0)
#define LED_CDC_ACM_OPEN (BSP_BOARD_LED_1)
#define LED_CDC_ACM_RX (BSP_BOARD_LED_2)
#define LED_CDC_ACM_TX (BSP_BOARD_LED_3)

#define BTN_CDC_DATA_SEND 0
#define BTN_CDC_NOTIFY_SEND 1

#ifndef USBD_POWER_DETECTION
#define USBD_POWER_DETECTION true
#endif

// UARTUI

static void cdc_acm_user_ev_handler(app_usbd_class_inst_t const *p_inst,
                                    app_usbd_cdc_acm_user_event_t event);

#define CDC_ACM_COMM_INTERFACE 0
#define CDC_ACM_COMM_EPIN NRF_DRV_USBD_EPIN2

#define CDC_ACM_DATA_INTERFACE 1
#define CDC_ACM_DATA_EPIN NRF_DRV_USBD_EPIN1
#define CDC_ACM_DATA_EPOUT NRF_DRV_USBD_EPOUT1

#define READ_SIZE 64
static char m_rx_buffer[READ_SIZE];
static char m_tx_buffer[READ_SIZE];

static void fatfs_example();

/**
 * @brief CDC_ACM class instance
 * */
APP_USBD_CDC_ACM_GLOBAL_DEF(m_app_cdc_acm,
                            cdc_acm_user_ev_handler,
                            CDC_ACM_COMM_INTERFACE,
                            CDC_ACM_DATA_INTERFACE,
                            CDC_ACM_COMM_EPIN,
                            CDC_ACM_DATA_EPIN,
                            CDC_ACM_DATA_EPOUT,
                            APP_USBD_CDC_COMM_PROTOCOL_AT_V250);

/**
 * @brief  SDC block device definition
 * */
NRF_BLOCK_DEV_SDC_DEFINE(
    m_block_dev_sdc,
    NRF_BLOCK_DEV_SDC_CONFIG(
        SDC_SECTOR_SIZE,
        APP_SDCARD_CONFIG(SDC_MOSI_PIN, SDC_MISO_PIN, SDC_SCK_PIN, SDC_CS_PIN)),
    NFR_BLOCK_DEV_INFO_CONFIG("Nordic", "SDC", "1.00"));

static void cdc_acm_user_ev_handler(app_usbd_class_inst_t const *p_inst,
                                    app_usbd_cdc_acm_user_event_t event)
{
    app_usbd_cdc_acm_t const *p_cdc_acm = app_usbd_cdc_acm_class_get(p_inst);

    switch (event)
    {
    case APP_USBD_CDC_ACM_USER_EVT_PORT_OPEN:
    {
        bsp_board_led_on(LED_CDC_ACM_OPEN);

        /*Setup first transfer*/
        ret_code_t ret = app_usbd_cdc_acm_read(&m_app_cdc_acm,
                                               m_rx_buffer,
                                               READ_SIZE);
        UNUSED_VARIABLE(ret);
        break;
    }
    case APP_USBD_CDC_ACM_USER_EVT_PORT_CLOSE:
        bsp_board_led_off(LED_CDC_ACM_OPEN);
        break;
    case APP_USBD_CDC_ACM_USER_EVT_TX_DONE:
        // nrfx_gpiote_out_clear(TEST_TIME_DELAY);
        bsp_board_led_invert(LED_CDC_ACM_TX);
        break;
    case APP_USBD_CDC_ACM_USER_EVT_RX_DONE:
    {
        ret_code_t ret;
        //            NRF_LOG_INFO("Bytes waiting: %d", app_usbd_cdc_acm_bytes_stored(p_cdc_acm));
        app_usbd_cdc_acm_bytes_stored(&m_app_cdc_acm);
        do
        {
            /*Get amount of data transfered*/
            size_t size = app_usbd_cdc_acm_rx_size(&m_app_cdc_acm);
            //                NRF_LOG_INFO("RX: size: %lu char: %c", size, m_rx_buffer[0]);

            /* Fetch data until internal buffer is empty */
            ret = app_usbd_cdc_acm_read(&m_app_cdc_acm,
                                        m_rx_buffer,
                                        READ_SIZE);
        } while (ret == NRF_SUCCESS);

        memcpy(m_tx_buffer, m_rx_buffer, READ_SIZE);
        app_usbd_cdc_acm_write(&m_app_cdc_acm, m_tx_buffer, READ_SIZE); //

        bsp_board_led_invert(LED_CDC_ACM_RX);
        break;
    }
    default:
        break;
    }
}

static void usbd_user_ev_handler(app_usbd_event_type_t event)
{
    switch (event)
    {
    case APP_USBD_EVT_DRV_SUSPEND:
        bsp_board_led_off(LED_USB_RESUME);
        break;
    case APP_USBD_EVT_DRV_RESUME:
        bsp_board_led_on(LED_USB_RESUME);
        break;
    case APP_USBD_EVT_STARTED:
        break;
    case APP_USBD_EVT_STOPPED:
        app_usbd_disable();
        bsp_board_leds_off();
        break;
    case APP_USBD_EVT_POWER_DETECTED:
        //            NRF_LOG_INFO("USB power detected");

        if (!nrf_drv_usbd_is_enabled())
        {
            app_usbd_enable();
        }
        break;
    case APP_USBD_EVT_POWER_REMOVED:
        //            NRF_LOG_INFO("USB power removed");
        app_usbd_stop();
        break;
    case APP_USBD_EVT_POWER_READY:
        //            NRF_LOG_INFO("USB ready");
        app_usbd_start();
        break;
    default:
        break;
    }
}
/// end for USB CDC

void clocks_start(void)
{
    NRF_CLOCK->EVENTS_HFCLKSTARTED = 0;
    NRF_CLOCK->TASKS_HFCLKSTART = 1;

    while (NRF_CLOCK->EVENTS_HFCLKSTARTED == 0)
        ;
}

//-----------------------GPIO-----------------------------

static void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
    if (pin == BUTTON_1)
    {
        // bsp_board_led_invert(LED_CDC_ACM_RX);

        fatfs_example();
    }
    else
    {
    }
}

void gpio_init(void)
{
    bsp_board_init(BSP_INIT_LEDS);
    ret_code_t err_code;

    err_code = nrf_drv_gpiote_init();
    //        APP_ERROR_CHECK(err_code);

    nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_HITOLO(false);
    in_config.pull = NRF_GPIO_PIN_PULLUP;

    err_code = nrf_drv_gpiote_in_init(BUTTON_1, &in_config, in_pin_handler);
    APP_ERROR_CHECK(err_code);

    nrf_drv_gpiote_in_event_enable(BUTTON_1, true);
}

/**
 * @brief Function for demonstrating FAFTS usage.
 */
static FATFS fs;
static DIR dir;
static FILINFO fno;
static FIL file;
static void fatfs_init()
{

    uint32_t bytes_written;
    FRESULT ff_result;
    DSTATUS disk_state = STA_NOINIT;

    // Initialize FATFS disk I/O interface by providing the block device.
    static diskio_blkdev_t drives[] =
        {
            DISKIO_BLOCKDEV_CONFIG(NRF_BLOCKDEV_BASE_ADDR(m_block_dev_sdc, block_dev), NULL)};

    diskio_blockdev_register(drives, ARRAY_SIZE(drives));

    NRF_LOG_INFO("Initializing disk 0 (SDC)...");
    for (uint32_t retries = 3; retries && disk_state; --retries)
    {
        disk_state = disk_initialize(0);
    }
    if (disk_state)
    {
        NRF_LOG_INFO("Disk initialization failed.");

        return;
    }

    uint32_t blocks_per_mb = (1024uL * 1024uL) / m_block_dev_sdc.block_dev.p_ops->geometry(&m_block_dev_sdc.block_dev)->blk_size;
    uint32_t capacity = m_block_dev_sdc.block_dev.p_ops->geometry(&m_block_dev_sdc.block_dev)->blk_count / blocks_per_mb;
    NRF_LOG_INFO("Capacity: %d MB", capacity);

    NRF_LOG_INFO("Mounting volume...");
    ff_result = f_mount(&fs, "", 1);
    if (ff_result)
    {
        bsp_board_led_invert(1);
        NRF_LOG_INFO("Mount failed.");
        return;
    }

    NRF_LOG_INFO("\r\n Listing directory: /");
    ff_result = f_opendir(&dir, "/");
    if (ff_result)
    {
        NRF_LOG_INFO("Directory listing failed!");
        return;
    }

    do
    {
        ff_result = f_readdir(&dir, &fno);
        if (ff_result != FR_OK)
        {
            NRF_LOG_INFO("Directory read failed.");
            return;
        }

        if (fno.fname[0])
        {
            if (fno.fattrib & AM_DIR)
            {
                NRF_LOG_RAW_INFO("   <DIR>   %s", (uint32_t)fno.fname);
            }
            else
            {
                NRF_LOG_RAW_INFO("%9lu  %s", fno.fsize, (uint32_t)fno.fname);
            }
        }
    } while (fno.fname[0]);
    NRF_LOG_RAW_INFO("");
}

static void fatfs_example()
{
    uint32_t bytes_written;
    FRESULT ff_result;

    NRF_LOG_INFO("Writing to file " FILE_NAME "...");
    ff_result = f_open(&file, FILE_NAME, FA_READ | FA_WRITE | FA_OPEN_APPEND);
    if (ff_result != FR_OK)
    {
        NRF_LOG_INFO("Unable to open or create file: " FILE_NAME ".");
        sprintf(m_tx_buffer,"ff_result = %d", ff_result);
        app_usbd_cdc_acm_write(&m_app_cdc_acm, m_tx_buffer, sizeof(m_tx_buffer));
        bsp_board_led_invert(LED_CDC_ACM_TX);
        return;
    }

    ff_result = f_write(&file, TEST_STRING, sizeof(TEST_STRING) - 1, (UINT *)&bytes_written);
    if (ff_result != FR_OK)
    {
        NRF_LOG_INFO("Write failed\r\n.");
    }
    else
    {

        NRF_LOG_INFO("%d bytes written.", bytes_written);
    }

    (void)f_close(&file);
    return;
}

/**
 * @brief Function for main application entry.
 */
int main(void)
{
    static const app_usbd_config_t usbd_config = {
        .ev_state_proc = usbd_user_ev_handler};

    nrf_drv_clock_init();

    clocks_start();

    gpio_init();

    APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
    NRF_LOG_DEFAULT_BACKENDS_INIT();

    NRF_LOG_INFO("FATFS example started.");

    app_usbd_serial_num_generate();
    app_usbd_init(&usbd_config);

    app_usbd_class_inst_t const *class_cdc_acm = app_usbd_cdc_acm_class_inst_get(&m_app_cdc_acm);
    app_usbd_class_append(class_cdc_acm);

    if (USBD_POWER_DETECTION)
    {
        app_usbd_power_events_enable();
    }
    else
    {
        app_usbd_enable();
        app_usbd_start();
    }

    fatfs_init();

    while (true)
    {

        __WFE();
    }
}

/** @} */

id my code ,please help me