Zephyr Mass storage sample (external sd card)https://devzone.nordicsemi.com/f/nordic-q-a/88586/zephyr-mass-storage-sample-external-sd-cardHi I m trying to implement mass storage on the arduino nano 33 ble sense board(nrf 52840) and I2c together. I m using the sample from zephyr and it will not mount the file system, I2c is working. Pin connections are OK. I m using the build Booting Zephyren-USTelligent Community 13Wed, 28 Sep 2022 07:02:20 GMTRE: Zephyr Mass storage sample (external sd card)https://devzone.nordicsemi.com/thread/388258?ContentTypeID=1Wed, 28 Sep 2022 07:02:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f40f2365-6a40-41e4-ad95-e00ae3a073b1David<p>Increasing stack size solved my problem:</p> <div> <div><span>CONFIG_MAIN_STACK_SIZE</span><span>=4096</span></div> <div><span>CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE</span><span>=4096</span></div> <div><span></span></div> <div><span><pre class="ui-code" data-mode="text"># # Copyright (c) 2018 Nordic Semiconductor # # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause # # Enable the UART driver CONFIG_UART_ASYNC_API=y CONFIG_NRFX_UARTE0=y CONFIG_SERIAL=y CONFIG_GPIO=y # Make sure printk is printing to the UART console CONFIG_CONSOLE=y CONFIG_PRINTK=y CONFIG_UART_CONSOLE=n CONFIG_RTT_CONSOLE=y CONFIG_HEAP_MEM_POOL_SIZE=2048 CONFIG_BT=y CONFIG_BT_PERIPHERAL=y CONFIG_BT_DEVICE_NAME=&quot;Nordic_UART_Service&quot; CONFIG_BT_DEVICE_APPEARANCE=833 CONFIG_BT_MAX_CONN=1 CONFIG_BT_MAX_PAIRED=1 # Enable CONFIG_DISK_ACCESS_SPI_SDHCCONFIG_DISK_ACCESS_SPI_SDHCthe NUS service CONFIG_BT_NUS=y # Enable bonding CONFIG_BT_SETTINGS=y CONFIG_FLASH=y CONFIG_FLASH_PAGE_LAYOUT=y CONFIG_FLASH_MAP=y CONFIG_NVS=y CONFIG_SETTINGS=y # Enable DK LED and Buttons library CONFIG_DK_LIBRARY=y # This example requires more workqueue stack CONFIG_MAIN_STACK_SIZE=4096 CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=4096 # Config logger CONFIG_LOG=y CONFIG_USE_SEGGER_RTT=y CONFIG_LOG_BACKEND_RTT=y CONFIG_LOG_BACKEND_UART=n CONFIG_I2C=y CONFIG_NRFX_TWI0=y CONFIG_ASSERT=y CONFIG_SPI=y CONFIG_DISK_ACCESS=y CONFIG_DISK_DRIVER_SDMMC=y CONFIG_FILE_SYSTEM=y CONFIG_FAT_FILESYSTEM_ELM=y CONFIG_FS_FATFS_NUM_FILES=4 CONFIG_SPI_NRFX_RAM_BUFFER_SIZE=64 </pre></span></div> </div><div style="clear:both;"></div>RE: Zephyr Mass storage sample (external sd card)https://devzone.nordicsemi.com/thread/388252?ContentTypeID=1Wed, 28 Sep 2022 06:38:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:561aeda2-3fd8-4a81-9c08-3ba65d05ddf4David<p>Hello, were you able to resolve this?<br /><br />I am having this seeing this problem with the same sd card chip.&nbsp;</p> <p>I am able to connect to SD if I use a segger fatfs example, but using the zephyr with nrf connect fails to mount SD.</p><div style="clear:both;"></div>RE: Zephyr Mass storage sample (external sd card)https://devzone.nordicsemi.com/thread/371195?ContentTypeID=1Tue, 07 Jun 2022 14:03:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e2ec5bf9-a05c-49e7-b731-b71544b061f9suads<p>Hi it is&nbsp;&nbsp;<span>Adafruit SPI Flash SD Card - XTSD 512 MB</span></p> <p><a href="https://www.adafruit.com/product/4899">www.adafruit.com/.../4899</a></p><div style="clear:both;"></div>RE: Zephyr Mass storage sample (external sd card)https://devzone.nordicsemi.com/thread/371193?ContentTypeID=1Tue, 07 Jun 2022 14:00:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5b2b31ce-a3f8-474b-af52-10024fc93cf2Hakon<p>Hello,</p> <p>what is the SD card reader/device you are trying to interface with?</p><div style="clear:both;"></div>