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samples: subsys: usb: mass: add support for Adafruit feather nRF52840

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Add configuration and overlay files for Adafruit feather nRF52840.
README has also been updated and improved. Documentation related to
littlefs has been moved to an independent section as it could apply to
any sample.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
This commit is contained in:
Gerard Marull-Paretas 2020-08-21 11:54:55 +02:00 committed by Carles Cufí
parent ec1a8377ab
commit c8cca16c20
3 changed files with 85 additions and 4 deletions
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46
samples/subsys/usb/mass/README.rst
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@ -79,9 +79,7 @@ nrf52840dk_nrf52840 Example
This board configures to use the external 64 MiBi QSPI flash chip with a
64 KiBy `littlefs`_ partition compatible with the one produced by the
:ref:`littlefs-sample`. While a FAT-based file system can be mounted by
many systems automatically, mounting the littlefs file system on a Linux
or FreeBSD system can be accomplished using the `littlefs-FUSE`_ utility.
:ref:`littlefs-sample`.
.. zephyr-app-commands::
:zephyr-app: samples/subsys/usb/mass
@ -113,7 +111,47 @@ different):
F 5 newfile
End of files
Determine the local device name from the system log, e.g.:
For information on mounting littlefs file system on Linux or FreeBSD
systems refer to the "littlefs Usage" section below.
adafruit_feather_nrf52840 Example
=================================
This board configures to use the external 16 MiBi QSPI flash chip with a
2 MiBy FAT partition.
.. zephyr-app-commands::
:zephyr-app: samples/subsys/usb/mass
:board: adafruit_feather_nrf52840
:goals: build
:compact:
After you have built and flashed the sample app image to your board,
connect the board's USB connector to a host capable of mounting FAT
drives. The output to the console will look something like this
(file system contents will be different):
.. code-block:: none
*** Booting Zephyr OS build zephyr-v2.3.0-1991-g4c8d1496eafb ***
Area 4 at 0x0 on GD25Q16 for 2097152 bytes
Mount /NAND:: 0
/NAND:: bsize = 512 ; frsize = 1024 ; blocks = 2028 ; bfree = 1901
/NAND: opendir: 0
F 0 SAMPLE.TXT
End of files
[00:00:00.077,423] <inf> main: The device is put in USB mass storage mode.
On most operating systems the drive will be automatically mounted.
littlefs Usage
==============
While a FAT-based file system can be mounted by many systems automatically,
mounting the littlefs file system on a Linux or FreeBSD system can be
accomplished using the `littlefs-FUSE`_ utility.
First determine the local device name from the system log, e.g.:
.. code-block:: none

23
samples/subsys/usb/mass/boards/adafruit_feather_nrf52840.conf Normal file
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@ -0,0 +1,23 @@
# qspi NOR driver
CONFIG_NORDIC_QSPI_NOR=y
CONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
# flash
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y
# mass storage
CONFIG_MASS_STORAGE_DISK_NAME="NAND"
# disk
CONFIG_DISK_ACCESS_FLASH=y
CONFIG_DISK_FLASH_DEV_NAME="GD25Q16"
CONFIG_DISK_FLASH_START=0x0
CONFIG_DISK_VOLUME_SIZE=0x200000
CONFIG_DISK_FLASH_MAX_RW_SIZE=4096
CONFIG_DISK_FLASH_ERASE_ALIGNMENT=0x1000
CONFIG_DISK_ERASE_BLOCK_SIZE=0x1000
# file system
CONFIG_FILE_SYSTEM=y
CONFIG_FAT_FILESYSTEM_ELM=y

20
samples/subsys/usb/mass/boards/adafruit_feather_nrf52840.overlay Normal file
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@ -0,0 +1,20 @@
/*
* Copyright (c) 2020 Teslabs Engineering S.L.
*
* SPDX-License-Identifier: Apache-2.0
*/
/delete-node/ &storage_partition;
&gd25q16 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "storage";
reg = <0x00000000 0x00200000>;
};
};
};