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samples: fs: fat_fs: Add RAM disk sample for nrf52840dk

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Add configuration for nrf52840dk that allows to create RAM
disk; this configuration does not reserve special region
in RAM using DTS but uses automatic buffer allocation, by RAM
Disk Drivers, according to RAM disk specification in DTS.

Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>
This commit is contained in:
Dominik Ermel 2024-03-01 11:46:38 +00:00 committed by Anas Nashif
parent 63692c1349
commit d5e321516a
3 changed files with 40 additions and 0 deletions
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13
samples/subsys/fs/fs_sample/boards/nrf52840dk_nrf52840_ram_disk.conf Normal file
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@ -0,0 +1,13 @@
#
# Copyright (c) 2024 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: Apache-2.0
#
CONFIG_DISK_DRIVERS=y
CONFIG_DISK_DRIVER_RAM=y
CONFIG_DISK_DRIVER_FLASH=n
# There may be no files on internal SoC flash, so this Kconfig
# options has ben enabled to create some if listing does not
# find in the first place.
CONFIG_FS_SAMPLE_CREATE_SOME_ENTRIES=y

21
samples/subsys/fs/fs_sample/boards/nrf52840dk_nrf52840_ram_disk.overlay Normal file
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@ -0,0 +1,21 @@
/*
* Copyright (c) 2024 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
/ {
msc_disk0 {
status="okay";
compatible = "zephyr,ram-disk";
/* Sample, to make things easier, mounts all FAT
* systems at "SD".
*/
disk-name = "SD";
/* Disk size is 64kB, 128 sectors of 512B, the minimal
* required by FAT FS.
*/
sector-size = <512>;
sector-count = <128>;
};
};

6
samples/subsys/fs/fs_sample/sample.yaml
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@ -31,6 +31,12 @@ tests:
sample.filesystem.fat_fs.nrf52840dk_nrf52840:
build_only: true
platform_allow: nrf52840dk/nrf52840
sample.filesystem.fat_fs.nrf52840dk_nrf52840_ram_disk:
build_only: true
platform_allow: nrf52840dk/nrf52840
extra_args:
- OVERLAY_CONFIG=boards/nrf52840dk_nrf52840_ram_disk.conf
- DTC_OVERLAY_FILE=boards/nrf52840dk_nrf52840_ram_disk.overlay
sample.filesystem.fat_fs.nrf52840dk_nrf52840.qspi:
build_only: true
platform_allow: nrf52840dk/nrf52840