zephyr

History

Maureen Helm 2b5f78a88f disk: Convert sdhc spi driver to new gpio api Converts the sdhc spi driver to the new gpio api. Updates device trees for the olimexino_stm32 and nrf52840_blip boards to set appropriate active high/low polarity for the spi chip select pin. Signed-off-by: Maureen Helm <maureen.helm@nxp.com>		2020-02-05 12:00:36 +01:00
..
src	…
CMakeLists.txt	…
README.rst	…
nrf52840_blip.overlay	disk: Convert sdhc spi driver to new gpio api	2020-02-05 12:00:36 +01:00
prj.conf	…
prj_mimxrt1050_evk.conf	…
sample.yaml	…

README.rst

.. _fat_fs:

FAT Filesystem Sample Application
###################################

Overview
********

This sample app demonstrates use of the filesystem API and uses the FAT file
system driver to mount an SDHC card connected over SPI bus.

Requirements
************

This project requires a SDHC or microSD card formatted with FAT filesystem.
See the :ref:`SDHC_disks` documentation for Zephyr implementation details.

Building and Running
********************

This sample can be built for an ``nrf52840_blip`` board. It requires
both the ``nrf52840_blip.overlay`` and the ``dts_fixup.h`` for nrf52840_blip
to work:

.. zephyr-app-commands::
   :zephyr-app: samples/subsys/fs/fat_fs
   :board: nrf52840_blip
   :goals: build
   :compact:

To run this sample, a FAT formatted microSD card should be present in the
microSD slot of ``nrf52840_blip`` board. If there are any files or directories
present in the card, the sample lists them out on the debug serial output.