How to write SDcard with fatfs on different pin.

[y001]

Hi,

I am using fatfs of nRF5_SDK_15.0.0_a53641a.

I am writing a program with keil.

I am currently doing SPI communication with BLENanov2(nRF52832) and SD card with fatfs. 

#define SDC_SCK_PIN     2   ///< SDC serial clock (SCK) pin.
#define SDC_MOSI_PIN    29  ///< SDC serial data in (DI) pin.
#define SDC_MISO_PIN    30  ///< SDC serial data out (DO) pin.
#define SDC_CS_PIN      28  ///< SDC chip select (CS) pin.

I tried writing fatfs by SPI communication with the pin setting as above and it was possible to write without problem.

At this time, in sdk_config

// <e> SPI0_ENABLED - Enable SPI0 instance
//==========================================================
#ifndef SPI0_ENABLED
#define SPI0_ENABLED 1
#endif
// <q> SPI0_USE_EASY_DMA  - Use EasyDMA
 
#ifndef SPI0_USE_EASY_DMA
#define SPI0_USE_EASY_DMA 1
#endif
// </e>
// <e> SPI1_ENABLED - Enable SPI1 instance
//==========================================================
#ifndef SPI1_ENABLED
#define SPI1_ENABLED 0
#endif
// <q> SPI1_USE_EASY_DMA  - Use EasyDMA
 
#ifndef SPI1_USE_EASY_DMA
#define SPI1_USE_EASY_DMA 1
#endif
// </e>
// <e> SPI2_ENABLED - Enable SPI2 instance

It has become like.

Here,SPI communication will be done with a different pin

#define SDC_SCK_PIN     8   ///< SDC serial clock (SCK) pin.
#define SDC_MOSI_PIN    6  ///< SDC serial data in (DI) pin.
#define SDC_MISO_PIN    7  ///< SDC serial data out (DO) pin.
#define SDC_CS_PIN      3  ///< SDC chip select (CS) pin.

When I set the pin like this,I can not write SDcard.

Please tell me how to resolve.

Thank you.

[Jørgen Holmefjord]

Please make sure you do not initialize UART or NRF_LOG in the application. The pins P0.05-P0.08 is by default used for UART interface on the nRF52-DK.

[Jørgen Holmefjord]

Yes, any GPIO of the nRF52832 can be used for UART interface. Did you check your code and make sure that you do not initialize UART of NRF_LOG with UART backend on the same pins?

Can you upload your main.c and sdk_config.h files?

[y001]

Is this OK with this?

0257.sdk_config.h

Fullscreen 0385.main.c Download

/**
 * 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
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * 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 "nrf_delay.h"
#include "nrf.h"
#include "bsp.h"
#include "ff.h"
#include "diskio_blkdev.h"
#include "nrf_block_dev_sdc.h"
#include "app_sdcard.h"

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

#include "nrf_gpio.h"
#include "nrf_drv_spi.h"
#include "app_error.h"
#include "nrf_assert.h"

#include "pt.h"
#include "nrf_pt.h"

#define FILE_NAME   "NORDIC.TXT"
#define TEST_STRING "SD card example."

#define SDC_SCK_PIN     8   ///< SDC serial clock (SCK) pin.
#define SDC_MOSI_PIN    6  ///< SDC serial data in (DI) pin.
#define SDC_MISO_PIN    7  ///< SDC serial data out (DO) pin.
#define SDC_CS_PIN      3  ///< SDC chip select (CS) pin.

/**
 * @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")//vendor, product, revision
);

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

    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)
    {
        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("");

    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 ".");
        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)
{
	
	  nrf_gpio_cfg_output(SDC_CS_PIN);
	  nrf_gpio_pin_set(SDC_CS_PIN);
	  nrf_gpio_pin_clear(SDC_CS_PIN);
	
    bsp_board_init(BSP_INIT_LEDS);
	
	
    APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
    NRF_LOG_DEFAULT_BACKENDS_INIT();

    NRF_LOG_INFO("FATFS example started.");

    fatfs_example();

    while (true)
    {
        __WFE();
    }
		
}

/** @} */

[Jørgen Holmefjord]

Like I suggested before, you are initializing NRF_LOG and have the UART backend enabled. This use GPIO P0.06 by default and will prevent you from using the pin with SPI. To disable NRF_LOG module, change your sdk_config.h file to the following defines:

#define NRF_LOG_ENABLED 0

#define NRF_LOG_BACKEND_UART_ENABLED 0

[y001]

I rewrote sdk_config.h and it worked well !!

Thank you very much.