zephyr

History

Andrzej Głąbek cd2236c199 samples: hci_spi: Decrease maximum number of BT connections With the maximum number set to 20, the sample fails to build for both platforms set as allowed for this sample and mentioned in its documentation, i.e. 96b_carbon_nrf51 and nrf51dk_nrf51422 (a build attempt ends up with an SRAM region overflow). Use a lower number to prevent this failure and set both those boards as integration platforms, so that such problem, if it was to appear again, could be caught by CI. Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>		2021-11-06 13:54:08 +01:00
..
boards
src
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
prj.conf	samples: hci_spi: Decrease maximum number of BT connections	2021-11-06 13:54:08 +01:00
README.rst	doc: use kconfig role and directive	2021-06-29 10:26:28 -04:00
sample.yaml	samples: hci_spi: Decrease maximum number of BT connections	2021-11-06 13:54:08 +01:00

README.rst

.. _bluetooth-hci-spi-sample:

Bluetooth: HCI SPI
##################

Overview
********

Expose Zephyr Bluetooth Controller support over SPI to another device/CPU using
the Zephyr SPI HCI transport protocol (similar to BlueNRG).

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

A board with SPI slave, GPIO and Bluetooth Low Energy support.

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

You then need to ensure that your :ref:`devicetree <dt-guide>` defines a node
for the HCI SPI slave device with compatible
:dtcompatible:`zephyr,bt-hci-spi-slave`. This node sets an interrupt line to
the host and associates the application with a SPI bus to use.

See :zephyr_file:`boards/nrf51dk_nrf51422.overlay
<samples/bluetooth/hci_spi/boards/nrf51dk_nrf51422.overlay>` in this sample
directory for an example overlay for the :ref:`nrf51dk_nrf51422` board.

You can then build this application and flash it onto your board in
the usual way; see :ref:`boards` for board-specific building and
flashing information.

You will also need a separate chip acting as BT HCI SPI master. This
application is compatible with the HCI SPI master driver provided by
Zephyr's Bluetooth HCI driver core; see the help associated with the
:kconfig:`CONFIG_BT_SPI` configuration option for more information.

Refer to :ref:`bluetooth-samples` for general Bluetooth information, and
to :ref:`96b_carbon_nrf51_bluetooth` for instructions specific to the
96Boards Carbon board.