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 BLE support.
Building and Running¶
In order to use this application, you need a board with a Bluetooth controller and SPI slave drivers, and a spare GPIO to use as an interrupt line to the SPI master.
You then need to ensure that your devicetree settings provide a definition for the slave HCI SPI device:
bt-hci@0 {
compatible = "zephyr,bt-hci-spi-slave";
...
};
You can then build this application and flash it onto your board in the usual way; see Supported 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 BT_SPI configuration option for more information.
Refer to Bluetooth samples for general Bluetooth information, and to Providing Bluetooth to 96b_carbon for instructions specific to the 96Boards Carbon board.