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# Kconfig - Bluetooth drivers configuration options
#
# Copyright (c) 2016 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
#
comment "Bluetooth HCI Driver Options"
# Controller support is an HCI driver in itself, so these HCI driver
# options are only applicable if controller support hasn't been enabled.
if !BLUETOOTH_CONTROLLER
config BLUETOOTH_UART
bool
choice
prompt "Bluetooth HCI driver"
default BLUETOOTH_H4
config BLUETOOTH_H4
bool "H:4 UART"
select UART_INTERRUPT_DRIVEN
select BLUETOOTH_UART
select BLUETOOTH_RECV_IS_RX_THREAD
depends on SERIAL
help
Bluetooth H:4 UART driver. Requires hardware flow control
lines to be available.
config BLUETOOTH_H5
bool "H:5 UART [EXPERIMENTAL]"
select UART_INTERRUPT_DRIVEN
select BLUETOOTH_UART
depends on SERIAL
help
Bluetooth three-wire (H:5) UART driver. Implementation of HCI
Three-Wire UART Transport Layer.
config BLUETOOTH_SPI
bool "SPI HCI"
select SPI
help
Supports Bluetooth ICs using SPI as the communication protocol.
HCI packets are sent and received as single Byte transferrs,
prepended after a known header. Headers may vary per device, so
additional platform specific knowlege may need to be added as
devices are. Current driver supports; ST X-NUCLEO BLE series.
config BLUETOOTH_NO_DRIVER
bool "No default HCI driver"
help
This is intended for unit tests where no internal driver
should be selected.
endchoice
endif # !BLUETOOTH_CONTROLLER
config BLUETOOTH_DEBUG_HCI_DRIVER
bool "Bluetooth HCI driver debug"
depends on BLUETOOTH_DEBUG
help
This option enables debug support for the chosen
Bluetooth HCI driver
config BLUETOOTH_UART_ON_DEV_NAME
string "Device Name of UART Device for Bluetooth"
default "UART_0"
depends on BLUETOOTH_UART
help
This option specifies the name of UART device to be used
for Bluetooth.
config BLUETOOTH_SPI_DEV_NAME
string "Device Name of SPI Device for Bluetooth"
default "SPI_0"
depends on BLUETOOTH_SPI
help
This option specifies the name of SPI device to be used for Bluetooth.
On the controller side, this SPI device is used to encapsulate the
RAW HCI frames to send further up the stack. On the BLE stack side,
this device is used to reply back with HCI frames that are sent over
the air.
# Headroom that the driver needs for sending and receiving buffers.
# Add a new 'default' entry for each new driver.
# Needed headroom for outgoing buffers (to controller)
config BLUETOOTH_HCI_SEND_RESERVE
int
# Even if no driver is selected the following default is still
# needed e.g. for unit tests.
default 0
default 0 if BLUETOOTH_H4
default 1 if BLUETOOTH_H5
default 1 if BLUETOOTH_SPI
# Needed headroom for incoming buffers (from controller)
config BLUETOOTH_HCI_RECV_RESERVE
int
# Even if no driver is selected the following default is still
# needed e.g. for unit tests.
default 0
default 0 if BLUETOOTH_H4
default 0 if BLUETOOTH_H5
if BLUETOOTH_SPI
config BLUETOOTH_SPI_CHIP_SELECT_DEV_NAME
string "Chip Select (CS) line driver name"
help
This option specifies the name of GPIO driver controlling
the Chip Select (CS) line.
config BLUETOOTH_SPI_IRQ_DEV_NAME
string "IRQ line driver name"
help
This option specifies the name of GPIO driver controlling
the chip's IRQ line.
config BLUETOOTH_SPI_RESET_DEV_NAME
string "Reset line driver name"
help
This option specifies the name of GPIO driver controlling
the chip's Reset line.
config BLUETOOTH_SPI_CHIP_SELECT_PIN
int "SPI Chip Select (CS) line number"
help
This option specifies the Chip Select (CS) line number on the SPI
device
config BLUETOOTH_SPI_IRQ_PIN
int "SPI IRQ line number"
help
This option specifies the IRQ line number on the SPI device
config BLUETOOTH_SPI_RESET_PIN
int "SPI Reset line number"
help
This option specifies the Reset line number on the SPI device
config BLUETOOTH_SPI_RX_BUFFER_SIZE
int "Receive buffer length"
default 96
help
This option specifies the size of the RX buffer. Try to keep this
as small as possible, since it's stored on the stack.
config BLUETOOTH_SPI_TX_BUFFER_SIZE
int "Transmit buffer length"
default 64
help
This option specifies the size of the TX buffer. Try to keep this
as small as possible, since it's stored on the stack.
config BLUETOOTH_SPI_MAX_CLK_FREQ
int "Maximum clock frequency for the HCI SPI interface"
default 5000000
help
This option specifies the maximum clock rate the HCI SPI
interface is capable of running at.
endif # BLUETOOTH_SPI
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